water-data report 2013 01194750 connecticut river at …01194750 connecticut river at essex, ct....

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U.S. Department of the Interior U.S. Geological Survey Suggested citation: U.S. Geological Survey, 2014, Water-resources data for the United States, Water Year 2013: U.S. Geological Survey Water-Data Report WDR-US-2013, site 01194750, accessed at http://wdr.water.usgs.gov/wy2013/pdfs/01194750.2013.pdf Water-Data Report 2013 01194750 CONNECTICUT RIVER AT ESSEX, CT Lower Connecticut Basin Lower Connecticut Subbasin LOCATION.--Lat 41°21'05.34", long 72°23'03.72" referenced to North American Datum of 1983, Middlesex County, CT, Hydrologic Unit 01080205, on the right bank of the Connecticut River on the north end of the fixed dock of The Connecticut River Museum at Essex Village, CT. Approximately 2.6 miles north of the I-95 bridge between North Cove and Middle Cove, just south of the Essex Island Marina and just north of the Essex Town Dock. Secondary gage (for water quality) is on the north end of the docks of The Essex Island Marina. DRAINAGE AREA.--11,200 mi². SURFACE-WATER RECORDS PERIOD OF RECORD.--Feb. 2010 to current year. GAGE.--Water-stage recorder. Datum of gage is National Geodetic Vertical Datum of 1929. Satellite telemetry at station. EXTREMES FOR PERIOD OF RECORD.--Maximum river elevation, 7.98 ft., Oct. 29, 2012; minimum tidal elevation, -2.56 ft., Feb. 18, 2013.

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Page 1: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

U.S. Department of the Interior U.S. Geological Survey

Suggested citation: U.S. Geological Survey, 2014, Water-resources data for the United States, Water Year 2013: U.S. Geological Survey Water-Data Report WDR-US-2013, site 01194750, accessed at

http://wdr.water.usgs.gov/wy2013/pdfs/01194750.2013.pdf

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT Lower Connecticut Basin

Lower Connecticut Subbasin

LOCATION.--Lat 41°21'05.34", long 72°23'03.72" referenced to North American Datum of 1983, Middlesex County, CT, Hydrologic Unit 01080205, on the right bank of the Connecticut River on the north end of the fixed dock of The Connecticut River Museum at Essex Village, CT. Approximately 2.6 miles north of the I-95 bridge between North Cove and Middle Cove, just south of the Essex Island Marina and just north of the Essex Town Dock. Secondary gage (for water quality) is on the north end of the docks of The Essex Island Marina.

DRAINAGE AREA.--11,200 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD.--Feb. 2010 to current year.

GAGE.--Water-stage recorder. Datum of gage is National Geodetic Vertical Datum of 1929. Satellite telemetry at station.

EXTREMES FOR PERIOD OF RECORD.--Maximum river elevation, 7.98 ft., Oct. 29, 2012; minimum tidal elevation, -2.56 ft., Feb. 18, 2013.

Page 2: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 2 —

GAGE HEIGHT, FEET WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Max Min Max Min Max Min Max Min Max Min

October November December January February March

1 2.61 -0.90 3.75 0.74 2.78 -0.33 1.95 -1.21 1.69 -1.56 3.81 0.18 2 2.86 -0.60 3.61 0.58 2.67 -0.57 2.12 -1.35 2.15 -0.40 3.70 -0.06 3 2.93 -0.29 3.18 0.14 2.24 -0.73 1.91 -1.00 2.62 0.00 3.34 -0.12 4 2.83 -0.19 2.84 -0.08 2.54 -0.38 2.20 -1.37 2.76 -0.95 3.06 -0.71 5 2.89 -0.01 2.57 -0.12 2.65 -1.38 1.55 -1.21 2.26 -0.92 2.65 -0.45

6 2.99 -0.13 2.63 -0.02 2.05 -0.51 2.65 -0.86 3.06 -0.60 3.76 0.01 7 2.49 0.00 4.26 0.50 2.59 -0.38 2.59 -1.06 2.80 -0.95 4.11 0.75 8 2.49 -0.13 3.53 -1.01 2.96 -0.34 2.97 -1.27 4.13 -0.64 4.55 0.77 9 2.93 0.03 2.74 -1.01 3.09 -0.65 2.80 -1.17 3.27 -0.85 4.63 0.95

10 3.04 -0.02 2.77 -0.63 3.77 -0.34 2.21 -1.88 3.27 -1.46 3.56 -0.11

11 2.30 -0.70 2.78 -1.13 3.33 -0.85 3.18 -1.46 3.27 -1.27 2.98 -0.51 12 2.19 -1.18 2.92 -1.10 3.12 -1.07 3.74 -0.53 3.04 -1.01 3.50 -0.36 13 2.57 -1.14 3.23 -1.28 3.41 -0.97 3.50 -0.57 2.53 -0.79 3.43 -0.08 14 2.88 -1.20 3.33 -1.12 3.40 -0.90 3.24 -0.66 3.08 -0.35 3.17 -0.06 15 3.48 -0.81 3.73 -0.71 3.22 -0.96 2.88 -0.60 2.88 -0.37 2.33 -0.03

16 3.25 -0.92 3.62 -0.59 3.79 -0.43 3.28 -0.12 2.68 -0.40 2.68 0.15 17 3.60 -0.73 3.18 -0.77 3.89 0.11 2.98 -0.44 2.61 -1.91 2.93 -0.06 18 3.56 -0.48 2.88 -0.82 3.90 0.54 2.79 -0.45 -0.16 -2.56 2.18 -0.13 19 3.99 -0.15 2.83 -0.58 3.62 -0.26 2.60 -0.63 1.93 -2.00 3.51 0.34 20 3.68 -0.04 2.75 -0.28 3.62 0.59 2.13 -0.76 1.86 -0.99 2.42 -0.32

21 2.92 -0.39 2.99 0.00 4.71 0.56 2.26 -0.76 1.44 -1.40 2.43 -0.13 22 2.48 -0.62 3.09 -0.12 3.44 0.02 2.29 -0.88 2.47 -1.28 2.31 -0.09 23 2.68 -0.37 2.87 -0.21 2.55 -0.07 2.64 -0.76 2.94 -0.28 1.77 -0.88 24 2.83 -0.32 3.02 -0.42 2.66 -0.05 1.72 -1.69 3.15 -0.53 3.13 -0.84 25 2.92 -0.30 2.21 -1.02 3.33 -0.15 2.08 -1.94 3.17 -0.34 3.91 -0.11

26 3.07 -0.35 1.95 -1.35 3.91 0.00 2.21 -1.36 3.09 -0.58 3.43 -0.03 27 3.45 -0.05 2.81 -0.73 5.26 0.36 1.94 -1.42 4.73 0.25 3.01 -0.71 28 4.25 0.77 3.04 -0.43 2.80 -0.34 2.66 -1.13 3.58 0.29 3.39 -0.75 29 7.98 1.64 2.83 -0.83 3.24 -0.06 2.85 -0.76 --- --- 3.37 -0.62 30 5.48 1.15 2.32 -0.91 3.18 -1.54 3.16 -0.24 --- --- 3.20 -0.69 31 4.00 0.63 --- --- 1.48 -1.40 3.35 -1.64 --- --- 3.15 -0.64

Month 7.98 -1.20 4.26 -1.35 5.26 -1.54 3.74 -1.94 4.73 -2.56 4.63 -0.88

Page 3: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 3 —

GAGE HEIGHT, FEET WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Max Min Max Min Max Min Max Min Max Min

April May June July August September

1 3.89 -0.22 --- --- 2.90 -0.13 3.18 0.37 3.01 -0.12 2.91 0.07 2 2.69 -0.68 --- --- 3.14 -0.19 3.06 0.18 3.00 0.09 3.00 -0.01 3 2.00 -1.00 --- --- 3.01 -0.35 3.00 0.05 2.90 -0.13 3.13 -0.02 4 2.43 -0.99 --- --- 2.84 -0.45 2.98 0.15 2.97 -0.23 2.85 -0.31 5 2.78 -0.38 --- --- 2.81 -0.55 3.05 0.59 2.96 -0.32 2.85 -0.38

6 2.54 -0.72 --- --- 3.00 -0.54 3.13 0.57 2.84 -0.44 3.06 -0.46 7 2.90 -0.83 --- --- 3.75 -0.34 3.38 0.37 3.05 -0.49 2.88 -0.66 8 3.01 -0.58 2.85 -0.80 3.25 0.15 3.29 0.26 3.00 -0.32 2.93 -0.63 9 3.14 -0.49 2.95 -0.67 2.82 0.01 3.30 0.12 3.22 -0.37 3.09 -0.54

10 3.50 -0.13 2.97 -0.69 3.52 0.11 3.30 0.11 2.96 -0.35 2.98 -0.74

11 3.35 0.09 3.09 -0.43 3.62 0.68 3.15 0.09 2.96 -0.50 2.93 -0.70 12 4.15 0.64 3.09 -0.28 3.11 0.63 3.30 0.18 3.04 -0.25 3.08 -0.29 13 3.28 0.62 2.61 -0.80 3.75 1.05 3.16 0.16 3.38 -0.07 3.37 -0.23 14 3.45 0.41 2.34 -0.92 4.36 2.13 2.85 -0.27 --- --- 3.12 -0.23 15 2.81 0.17 2.28 -0.73 3.81 2.00 2.96 -0.30 3.01 -0.58 2.98 -0.43

16 2.53 0.27 2.34 -0.50 3.70 1.51 3.02 -0.27 3.11 -0.59 3.08 -0.51 17 2.29 -0.07 2.20 -0.66 3.47 0.82 3.38 -0.20 3.07 -0.64 3.21 -0.76 18 2.43 0.07 2.13 -0.71 3.64 0.56 3.31 -0.25 3.29 -0.91 3.14 -0.67 19 2.84 0.48 2.37 -0.61 3.57 0.28 3.64 -0.38 3.18 -0.72 2.98 -0.78 20 2.10 -0.09 2.49 -0.68 3.35 -0.08 3.53 -0.41 3.27 -0.97 3.30 -0.74

21 2.62 -0.20 3.03 -0.75 3.37 -0.41 3.85 -0.58 3.15 -0.83 3.54 -0.48 22 3.40 0.22 3.23 -0.62 3.45 -0.66 3.88 -0.40 3.06 -0.96 3.36 -0.41 23 3.40 0.55 3.49 -0.69 3.37 -0.71 3.98 -0.34 3.08 -0.73 3.03 -0.41 24 3.55 0.10 3.34 -0.29 3.31 -0.81 3.89 -0.16 3.16 -0.72 2.87 -0.29 25 3.47 -0.30 3.05 -0.32 3.39 -0.81 3.60 -0.24 2.81 -0.67 2.81 -0.04

26 3.34 -0.63 3.32 -0.57 3.57 -0.38 3.49 -0.18 2.77 -0.55 2.72 0.07 27 3.24 -0.77 3.32 -0.13 3.53 -0.20 3.11 -0.45 2.98 -0.04 2.69 0.19 28 3.24 -0.79 3.14 0.27 3.87 0.28 3.04 -0.35 3.06 0.13 2.62 0.07 29 3.25 -0.71 3.30 0.49 3.73 0.57 3.16 -0.19 2.98 0.24 2.71 0.08 30 3.08 -0.66 2.94 0.21 3.47 0.59 2.78 -0.29 2.73 0.11 2.98 -0.01 31 --- --- 2.90 0.12 --- --- 2.91 -0.29 2.98 -0.17 --- ---

Month 4.15 -1.00 --- --- 4.36 -0.81 3.98 -0.58 --- --- 3.54 -0.78

Page 4: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 4 —

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: Feb. 19, 2010 to current year. WATER TEMPERATURE: Feb. 19, 2010 to current year. SALINITY: Feb. 19, 2010 to current year.

INSTRUMENTATION.--Water-quality monitors Feb. 2010 to current year. Three monitors at station, one is at the main dock near the middle of the water column (called "MAIN"). The other two are on an upstream dock, one is near the top of the river (called "TOP"), the other is near the bottom of the river (called "BOTTOM").

EXTREMES FOR PERIOD OF DAILY RECORD.-- WATER TEMPERATURE (MAIN): Maximum, 30.4 °C, Jul. 12, 2010; minimum, -0.1 °C, on several days. SPECIFIC CONDUCTANCE (MAIN): Maximum, 42,200 microsiemens, Sep. 18, 2012; minimum, 54 microsiemens, Mar. 31, 2010. SALINITY (MAIN): Maximum, 27 psu, Sep. 18, 2012; minimum, 0 psu, on many days. TURBIDITY (MAIN): Maximum, 170 FNU, Oct. 28, 2012; minimum, 0.1 FNU, Aug. 20, Sep. 1, 21, 2010. WATER TEMPERATURE (TOP): Maximum, 29.7 °C, Jul. 9, 2010; minimum, -0.2 °C, Jan. 24, 2013. SPECIFIC CONDUCTANCE (TOP): Maximum, 42,500 microsiemens, Oct. 29, 2012; minimum, 69 microsiemens, Mar. 31, 2010. SALINITY (TOP): Maximum, 27 psu, Oct. 29, 2012; minimum, 0 psu, on many days. WATER TEMPERATURE (BOTTOM): Maximum, 29.5 °C, Jul. 9, 2010, Jul. 18, 2012; minimum, -0.1 °C, Jan. 3, 2013. SPECIFIC CONDUCTANCE (BOTTOM): Maximum, 43,700 microsiemens, Oct. 29, 2012; minimum, 63 microsiemens, Apr. 13, 2013. SALINITY (BOTTOM): Maximum, 28 psu, Oct. 29, 2012; minimum, 0 psu, on many days.

Page 5: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 5 —

TEMPERATURE, WATER, DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 19.4 16.8 18.3 13.5 13.0 13.3 6.7 3.6 4.6 0.6 0.1 0.3 2 18.5 17.5 18.2 13.1 12.3 12.8 6.3 4.1 5.0 0.5 -0.1 0.2 3 18.8 17.8 18.2 12.4 11.2 11.9 6.1 4.5 5.3 0.3 -0.1 0.0 4 18.8 17.7 18.0 11.6 10.2 11.2 6.9 4.5 5.4 0.3 0.0 0.1 5 19.8 17.9 18.4 11.1 9.4 10.7 6.9 5.0 5.7 0.4 0.0 0.1

6 19.6 18.2 18.6 10.7 8.9 10.1 5.8 3.7 4.7 1.5 0.0 0.4 7 18.6 17.0 18.0 11.5 7.8 9.4 6.2 4.1 4.8 1.2 0.1 0.4 8 18.1 16.6 17.4 8.4 5.9 7.3 5.8 4.8 5.1 1.6 0.1 0.5 9 17.7 16.3 17.0 8.4 6.5 7.1 6.1 5.0 5.3 1.4 0.3 0.7

10 17.4 16.2 16.9 8.0 6.8 7.2 7.9 4.9 5.6 1.9 0.6 1.0

11 16.8 15.8 16.4 9.4 6.9 7.5 7.8 5.2 5.7 3.9 0.8 1.3 12 16.4 14.0 15.3 10.0 7.4 8.1 5.6 4.8 5.1 3.1 1.3 1.7 13 15.1 12.7 14.4 10.0 8.4 8.9 5.3 4.2 4.7 3.4 1.7 2.1 14 14.9 13.2 14.3 10.7 7.9 8.6 4.7 3.3 4.2 4.6 2.2 2.9 15 16.1 14.3 14.9 10.1 7.0 8.3 4.2 2.7 3.7 3.5 2.8 3.0

16 15.4 13.9 14.7 8.7 6.9 8.1 6.4 3.0 3.7 2.9 2.0 2.7 17 14.9 12.4 13.8 8.2 6.5 7.7 5.3 3.4 3.9 3.3 2.3 2.9 18 14.8 12.7 14.0 8.7 5.7 7.3 4.6 3.6 4.0 2.8 1.4 2.1 19 15.9 14.2 14.8 8.6 6.0 7.1 4.4 3.6 3.9 3.0 1.1 1.8 20 16.6 14.9 15.4 8.0 5.8 6.9 4.9 3.4 3.8 3.2 1.8 2.1

21 15.4 14.3 14.8 7.8 6.3 6.9 5.6 3.8 4.5 2.6 1.0 1.4 22 14.8 13.9 14.5 7.9 6.4 6.9 5.4 3.9 4.3 1.4 0.0 0.9 23 14.4 13.8 14.1 8.4 6.5 7.1 4.0 3.3 3.8 1.0 0.0 0.3 24 14.4 13.8 13.9 8.6 5.8 7.1 3.3 2.8 3.0 0.5 -0.1 0.1 25 14.7 13.8 14.1 7.0 5.3 6.0 2.9 2.2 2.6 0.7 -0.1 0.1

26 15.1 13.8 14.2 6.3 4.3 5.7 2.2 1.5 2.0 0.6 -0.1 0.1 27 15.4 13.9 14.5 7.6 4.8 5.7 3.8 1.6 2.1 0.4 -0.1 0.1 28 15.3 13.9 14.3 7.1 4.7 5.6 2.0 1.1 1.6 0.9 0.0 0.2 29 15.7 13.6 14.5 6.4 4.3 4.9 1.5 0.6 1.2 0.9 0.0 0.2 30 15.5 14.0 14.3 5.1 3.3 4.2 1.1 0.0 0.6 1.1 0.0 0.3 31 14.2 13.4 13.8 --- --- --- 0.5 0.0 0.2 4.2 0.5 1.6

Month 19.8 12.4 15.6 13.5 3.3 8.0 7.9 0.0 3.9 4.6 -0.1 1.0

Page 6: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 6 —

TEMPERATURE, WATER, DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 1.3 0.0 0.8 4.0 2.6 3.3 10.0 6.9 7.7 16.2 12.6 13.7 2 1.0 0.0 0.5 3.7 2.9 3.3 8.2 6.6 7.3 16.5 13.5 14.4 3 0.6 0.2 0.4 4.0 2.6 3.3 7.6 6.0 6.6 16.4 14.2 15.1 4 0.7 0.0 0.4 3.7 2.6 3.1 7.4 5.6 6.1 16.9 14.8 15.7 5 0.1 0.0 0.1 4.8 2.3 3.1 8.3 6.1 6.6 17.2 15.2 16.1

6 0.6 0.0 0.2 3.9 3.2 3.5 8.4 5.8 6.6 18.6 16.0 16.7 7 0.7 0.0 0.2 4.0 3.1 3.4 9.5 5.9 7.0 20.1 16.8 17.7 8 0.6 0.0 0.1 3.4 1.6 2.6 11.6 6.7 8.0 18.9 17.0 18.1 9 0.0 -0.1 0.0 3.6 1.8 2.8 13.6 7.6 9.2 18.4 16.2 17.8

10 0.3 -0.1 0.0 5.1 2.6 3.4 12.9 8.8 10 21.1 16.9 18.5

11 0.4 -0.1 0.0 6.4 3.4 4.2 12.0 9.7 10.3 19.2 18.0 18.7 12 0.1 -0.1 0.0 6.0 4.2 4.9 10.0 7.8 8.9 20.3 18.2 18.8 13 0.2 -0.1 0.1 8.0 5.2 6.0 9.0 7.2 7.8 19.2 16.6 18.3 14 0.4 0.0 0.1 6.3 4.6 5.8 10.4 7.0 7.8 18.0 15.2 17.5 15 0.8 0.0 0.3 4.9 2.6 3.6 8.9 6.6 7.4 17.6 15.5 17.2

16 1.1 0.2 0.7 3.5 2.0 2.6 10.9 6.9 7.9 18.6 16.0 17.1 17 1.1 0.1 0.6 3.4 1.8 2.4 11.9 7.8 9.2 18.7 16.6 17.4 18 1.1 0.0 0.3 2.4 1.1 1.9 10.7 8.5 9.1 17.9 16.6 17.3 19 1.3 0.3 0.8 3.2 1.8 2.3 12.6 8.9 9.8 17.7 16.0 17.0 20 1.6 0.6 1.2 3.8 1.8 2.5 13.4 9.8 10.7 19.6 16.3 17.5

21 1.5 0.4 0.9 4.3 2.2 2.6 11.5 9.4 10.2 21.4 17.4 19.0 22 1.4 0.0 0.9 4.0 2.1 2.6 11.5 9.2 10.1 21.7 17.7 19.7 23 1.5 0.8 1.2 5.8 2.2 3.2 10.6 9.2 9.5 21.5 19.6 20.1 24 2.4 1.0 1.6 6.0 2.7 3.5 12.5 8.9 9.7 21.3 19.1 20.3 25 3.1 1.4 2.0 4.7 3.6 3.9 14.3 9.3 10.6 19.1 16.5 17.5

26 3.1 1.7 2.3 5.9 3.7 4.3 14.5 10.1 11.2 16.8 14.1 15.9 27 3.4 2.3 2.8 --- --- --- 15.2 10.5 11.9 18.2 14.6 15.8 28 4.1 2.0 3.1 6.3 4.5 5.1 15.4 11.3 12.4 16.9 14.2 15.2 29 --- --- --- 9.2 4.9 5.9 13.7 11.8 12.5 17.5 13.6 14.8 30 --- --- --- 9.3 5.6 6.6 15.4 12.3 13.0 19.0 14.2 15.7 31 --- --- --- 8.4 6.1 6.8 --- --- --- 19.9 15.5 17.1

Month 4.1 -0.1 0.8 --- --- --- 15.4 5.6 9.2 21.7 12.6 17.2

Page 7: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 7 —

TEMPERATURE, WATER, DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 21.9 16.8 18.2 24.3 23.2 23.4 25.6 24.1 25.0 24.9 23.6 24.2 2 22.2 18.6 19.7 24.2 22.9 23.2 26.3 24.2 25.2 25.0 23.8 24.5 3 22.5 20.1 20.6 24.4 22.7 23.4 25.6 24.2 25.0 25.0 24.0 24.8 4 21.5 19.9 20.7 24.9 23.1 24.0 26.0 23.8 24.8 25.7 23.5 24.7 5 23.0 20.3 21.2 25.3 23.1 24.1 25.8 23.2 24.5 24.7 23.5 24.1

6 22.4 20.5 21.1 25.7 22.8 24.0 26.1 23.4 24.3 23.8 21.5 23.0 7 20.8 19.7 20.2 26.7 23.6 24.9 26.1 23.6 24.4 23.8 20.6 22.7 8 20.2 17.6 19.1 27.5 24.4 25.4 25.2 23.5 24.3 23.7 21.6 22.7 9 21.6 18.4 19.3 26.9 24.6 25.4 24.5 23.7 24.2 23.0 20.7 22.2

10 20.2 18.5 19.2 27.1 24.8 25.6 26.3 23.6 24.6 22.4 21.0 22.1

11 21.1 18.2 19.0 26.4 24.8 25.4 25.8 23.0 24.4 24.8 21.4 22.5 12 20.4 18.0 18.9 25.4 24.4 24.8 25.6 23.7 24.4 24.6 22.2 23.1 13 18.6 16.6 17.6 25.2 24.0 24.5 24.3 23.2 24.0 23.9 22.8 23.3 14 17.9 16.1 16.6 26.8 24.1 24.8 24.1 22.6 23.6 23.3 21.8 22.7 15 18.6 15.9 16.9 28.0 24.6 25.7 23.9 22.7 23.3 22.8 21.6 22.5

16 18.7 16.0 17.0 28.3 25.2 26.3 24.1 22.8 23.7 21.8 20.2 21.3 17 20.9 16.6 18.0 28.5 26.1 26.8 25.2 22.7 23.8 20.3 18.8 19.9 18 20.8 17.7 18.9 29.2 26.7 27.5 24.4 21.8 23.6 20.6 18.1 19.6 19 21.2 18.6 19.4 30.1 26.8 28.3 24.8 22.7 23.5 21.0 18.2 19.5 20 22.0 18.9 19.8 30.1 27.7 28.6 26.2 22.9 23.9 21.0 18.3 19.5

21 22.6 19.1 20.1 29.8 27.5 28.6 26.6 22.9 24.3 20.6 18.9 19.7 22 23.4 19.4 20.6 28.7 26.4 28.2 25.0 23.3 24.3 20.7 19.6 19.9 23 24.8 20.1 21.5 29.5 27.0 28.0 25.8 23.5 24.5 19.8 17.6 19.1 24 26.4 21.5 22.8 29.0 27.2 27.9 25.1 22.3 23.9 19.6 17.4 18.9 25 26.5 22.6 23.8 27.4 23.3 25.7 25.3 22.7 24.0 19.6 17.6 18.9

26 26.2 23.9 24.7 25.1 21.8 24.2 24.5 22.9 23.9 19.4 18.5 19.0 27 25.7 24.4 24.9 25.7 22.4 24.2 25.2 23.1 24.2 18.9 18.2 18.5 28 26.1 24.4 24.8 25.8 24.0 24.7 26.0 23.7 24.9 18.9 17.6 18.3 29 25.5 24.1 24.5 26.7 24.4 25.0 25.6 23.5 24.6 19.4 18.2 18.7 30 24.8 23.6 24.0 25.8 24.2 25.0 24.9 23.4 24.1 19.7 18.4 18.8 31 --- --- --- 25.8 24.4 25.0 24.8 23.3 24.2 --- --- ---

Month 26.5 15.9 20.4 30.1 21.8 25.6 26.6 21.8 24.2 25.7 17.4 21.3

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 8 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 5,650 173 847 829 129 305 23,700 489 6,530 174 141 151 2 24,100 178 2,560 642 116 232 22,400 923 8,780 2,880 145 476 3 18,900 186 3,200 775 105 204 17,100 405 5,970 177 147 159 4 6,650 168 929 635 106 173 21,100 531 6,560 2,140 141 602 5 14,400 168 1,830 444 110 164 19,500 185 4,970 167 139 147

6 13,300 182 2,770 1,600 110 390 11,500 174 2,260 12,900 139 1,930 7 13,200 177 2,270 24,000 110 3,430 16,600 303 4,370 9,380 139 942 8 14,100 637 5,520 4,780 125 1,880 14,000 169 2,110 13,000 139 1,300 9 18,600 726 5,700 13,100 119 2,120 6,570 159 714 9,670 146 551

10 17,700 917 6,880 9,050 115 1,250 28,100 158 3,740 169 145 155

11 8,540 187 1,610 4,270 118 559 869 149 289 30,900 149 3,770 12 8,370 187 1,550 14,000 144 1,220 701 146 198 20,100 150 2,760 13 17,100 176 2,910 13,500 141 1,240 7,220 149 404 3,470 149 492 14 4,940 169 802 30,300 134 2,870 219 140 161 322 153 185 15 --- --- --- 29,700 135 2,700 2,960 130 257 185 165 172

16 11,000 169 941 9,220 139 862 26,000 135 2,370 183 158 168 17 23,900 168 1,750 4,140 136 328 17,300 127 3,400 165 146 158 18 19,000 163 1,600 13,200 133 1,260 8,090 130 1,190 168 146 150 19 29,200 163 2,640 17,200 132 2,910 475 133 194 172 148 158 20 6,430 158 1,220 14,200 163 3,360 11,600 140 1,210 177 158 165

21 305 157 185 13,200 136 3,050 473 142 211 6,040 154 686 22 257 145 166 14,500 187 2,440 225 116 142 4,360 155 722 23 185 123 137 18,000 148 4,540 174 113 125 7,490 157 536 24 753 114 162 20,300 288 4,790 158 96 113 780 155 224 25 2,090 118 339 9,700 148 1,680 130 97 104 10,200 151 1,330

26 14,000 122 2,060 9,090 142 1,530 126 101 108 9,230 153 1,820 27 20,000 129 3,260 22,900 153 4,300 17,800 104 1,850 5,630 148 755 28 25,400 129 4,980 19,900 210 4,000 517 117 207 14,000 154 2,830 29 41,300 276 17,400 13,700 159 1,820 360 124 179 13,300 152 2,410 30 37,300 262 5,350 8,270 153 802 345 157 198 12,200 150 2,540 31 2,000 145 731 --- --- --- 217 140 158 7,460 156 1,150

Month --- --- --- 30,300 105 1,880 28,100 96 1,910 30,900 139 955

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 9 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 222 163 186 176 119 165 1,970 137 202 122 112 115 2 235 144 203 193 130 178 143 135 138 128 117 120 3 169 118 135 179 141 166 143 130 136 1,470 119 231 4 163 122 131 166 140 160 132 118 123 6,910 124 698 5 146 127 132 1,520 137 355 131 123 126 4,710 127 538

6 142 125 131 8,800 159 1,810 135 121 126 7,690 130 753 7 142 123 129 10,200 170 2,400 131 121 124 --- --- --- 8 7,240 121 936 23,900 160 2,870 130 122 125 7,820 139 801 9 1,160 121 206 14,400 162 1,770 131 122 125 12,700 144 1,250

10 10,000 124 1,920 629 167 291 131 123 126 8,300 142 503

11 10,000 123 1,640 324 187 217 131 111 120 5,540 146 399 12 1,350 124 227 229 190 215 123 96 109 1,860 150 255 13 167 136 144 210 128 173 123 89 97 162 146 152 14 167 146 153 174 122 160 114 90 98 289 143 154 15 170 158 167 145 115 127 113 95 99 995 141 219

16 252 158 166 123 114 117 108 93 97 1,080 141 283 17 2,280 153 253 123 119 122 113 95 101 2,130 139 340 18 181 167 172 125 120 122 110 97 100 7,100 140 1,320 19 5,550 174 901 126 116 120 108 96 98 11,800 145 1,810 20 2,330 169 561 127 118 122 112 93 99 15,200 163 2,810

21 820 158 242 157 119 144 110 99 104 14,800 180 3,010 22 15,000 152 3,300 168 136 161 110 88 94 16,300 150 1,890 23 11,000 174 2,090 163 134 152 106 86 92 1,570 153 305 24 9,990 172 1,710 6,150 140 611 103 92 93 250 142 166 25 13,800 164 2,010 14,200 145 1,230 110 93 97 182 115 137

26 6,920 157 464 2,190 144 276 109 95 101 144 109 119 27 21,800 164 2,340 --- --- --- 114 104 108 123 96 107 28 378 133 181 1,160 145 166 119 104 107 111 88 97 29 --- --- --- 3,610 144 305 120 105 107 100 86 90 30 --- --- --- 170 145 149 119 106 109 103 88 92 31 --- --- --- 157 142 146 --- --- --- 103 94 97

Month 21,800 118 744 --- --- --- 1,970 86 113 --- --- ---

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 10 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 104 96 98 132 112 117 13,400 167 2,170 15,800 528 5,800 2 106 96 99 128 113 117 13,400 206 2,590 14,100 257 3,730 3 108 99 103 126 110 114 13,000 213 2,870 10,900 212 2,290 4 110 99 105 121 102 110 16,000 231 3,100 1,420 182 401 5 117 107 113 113 102 106 20,400 237 4,160 9,110 170 632

6 120 111 114 115 102 107 14,100 290 4,280 14,400 173 2,210 7 119 106 112 116 102 105 15,100 185 2,830 15,400 174 2,710 8 109 75 101 113 103 108 17,000 206 4,050 23,000 233 4,980 9 117 79 106 117 109 112 12,200 187 2,590 20,100 200 5,190

10 117 100 109 119 111 115 2,460 179 465 13,300 188 2,340

11 104 96 100 121 118 120 305 168 201 25,300 267 5,360 12 108 85 102 124 120 122 248 151 174 25,800 560 8,020 13 107 94 103 128 121 123 13,800 147 1,400 18,500 304 5,140 14 96 90 92 130 121 124 --- --- --- 1,580 180 415 15 101 87 97 134 126 129 15,100 148 1,680 872 170 249

16 94 89 91 137 131 134 17,300 160 1,960 554 148 205 17 97 90 94 3,530 134 328 24,300 194 3,340 340 142 174 18 101 96 100 7,960 139 557 33,000 231 5,190 263 131 160 19 109 99 105 12,700 142 971 17,800 219 3,850 270 133 155 20 116 105 113 7,050 145 370 24,600 206 3,290 18,400 138 1,650

21 119 109 112 8,290 144 574 19,600 246 4,280 21,200 146 2,630 22 119 112 115 13,800 146 810 20,900 244 4,600 8,660 158 1,740 23 143 117 120 9,620 148 519 14,300 203 2,980 18,900 151 2,780 24 148 121 126 4,010 144 336 26,600 274 6,130 7,710 164 1,960 25 791 128 162 159 150 154 24,200 223 5,890 6,890 165 1,050

26 176 135 140 157 133 147 22,500 559 6,970 9,560 252 2,660 27 159 134 138 156 132 138 19,600 628 6,180 11,700 350 3,260 28 139 132 135 825 138 172 16,800 333 4,630 14,300 773 4,790 29 140 132 135 8,920 144 909 20,600 516 6,000 16,200 934 5,920 30 142 122 132 10,000 146 1,040 20,600 2,090 8,410 16,900 705 6,390 31 --- --- --- 9,340 152 1,390 21,000 871 7,530 --- --- ---

Month 791 75 112 13,800 102 332 --- --- --- 25,800 131 2,830

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 11 —

SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 3 0 0 0 0 0 14 0 4 0 0 0 2 15 0 1 0 0 0 13 0 5 1 0 0 3 11 0 2 0 0 0 10 0 3 0 0 0 4 4 0 0 0 0 0 13 0 4 1 0 0 5 8 0 0 0 0 0 12 0 3 0 0 0

6 8 0 1 0 0 0 7 0 1 7 0 1 7 8 0 1 15 0 2 10 0 2 5 0 0 8 8 0 3 3 0 0 8 0 1 7 0 0 9 11 0 3 8 0 1 4 0 0 5 0 0

10 10 0 4 5 0 0 17 0 2 0 0 0

11 5 0 0 2 0 0 0 0 0 19 0 2 12 5 0 0 8 0 0 0 0 0 12 0 2 13 10 0 2 8 0 0 4 0 0 2 0 0 14 3 0 0 19 0 2 0 0 0 0 0 0 15 2 0 0 18 0 2 2 0 0 0 0 0

16 6 0 0 5 0 0 16 0 1 0 0 0 17 14 0 0 2 0 0 10 0 2 0 0 0 18 11 0 0 8 0 0 4 0 0 0 0 0 19 18 0 1 10 0 2 0 0 0 0 0 0 20 4 0 0 8 0 2 7 0 0 0 0 0

21 0 0 0 8 0 2 0 0 0 3 0 0 22 0 0 0 8 0 1 0 0 0 2 0 0 23 0 0 0 11 0 3 0 0 0 4 0 0 24 0 0 0 12 0 3 0 0 0 0 0 0 25 1 0 0 5 0 0 0 0 0 6 0 0

26 8 0 1 5 0 0 0 0 0 5 0 0 27 12 0 2 14 0 2 10 0 1 3 0 0 28 15 0 3 12 0 2 0 0 0 8 0 2 29 26 0 11 8 0 0 0 0 0 8 0 1 30 24 0 3 5 0 0 0 0 0 7 0 1 31 1 0 0 --- --- --- 0 0 0 4 0 0

Month 26 0 1 19 0 0 17 0 0 19 0 0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 12 —

SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 0 0 0 0 0 0 1 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 4 0 0 5 0 0 0 0 0 0 0 0 0 3 0 0

6 0 0 0 5 0 0 0 0 0 4 0 0 7 0 0 0 6 0 1 0 0 0 3 0 0 8 4 0 0 14 0 2 0 0 0 4 0 0 9 0 0 0 8 0 0 0 0 0 7 0 0

10 6 0 1 0 0 0 0 0 0 5 0 0

11 6 0 0 0 0 0 0 0 0 3 0 0 12 0 0 0 0 0 0 0 0 0 0 0 0 13 0 0 0 0 0 0 0 0 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 0 0 15 0 0 0 0 0 0 0 0 0 0 0 0

16 0 0 0 0 0 0 0 0 0 0 0 0 17 1 0 0 0 0 0 0 0 0 1 0 0 18 0 0 0 0 0 0 0 0 0 4 0 0 19 3 0 0 0 0 0 0 0 0 7 0 0 20 1 0 0 0 0 0 0 0 0 9 0 2

21 0 0 0 0 0 0 0 0 0 9 0 2 22 9 0 2 0 0 0 0 0 0 10 0 1 23 6 0 1 0 0 0 0 0 0 0 0 0 24 6 0 0 3 0 0 0 0 0 0 0 0 25 8 0 1 8 0 0 0 0 0 0 0 0

26 4 0 0 1 0 0 0 0 0 0 0 0 27 13 0 1 --- --- --- 0 0 0 0 0 0 28 0 0 0 0 0 0 0 0 0 0 0 0 29 --- --- --- 2 0 0 0 0 0 0 0 0 30 --- --- --- 0 0 0 0 0 0 0 0 0 31 --- --- --- 0 0 0 --- --- --- 0 0 0

Month 13 0 0 --- --- --- 1 0 0 10 0 0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 13 —

SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 0 0 0 0 0 0 8 0 1 9 0 3 2 0 0 0 0 0 0 8 0 1 8 0 2 3 0 0 0 0 0 0 7 0 2 6 0 1 4 0 0 0 0 0 0 9 0 2 0 0 0 5 0 0 0 0 0 0 12 0 2 5 0 0

6 0 0 0 0 0 0 8 0 2 8 0 1 7 0 0 0 0 0 0 9 0 2 9 0 1 8 0 0 0 0 0 0 10 0 2 14 0 3 9 0 0 0 0 0 0 7 0 1 12 0 3

10 0 0 0 0 0 0 1 0 0 8 0 1

11 0 0 0 0 0 0 0 0 0 15 0 3 12 0 0 0 0 0 0 0 0 0 16 0 5 13 0 0 0 0 0 0 8 0 0 11 0 3 14 0 0 0 0 0 0 7 0 0 0 0 0 15 0 0 0 0 0 0 9 0 0 0 0 0

16 0 0 0 0 0 0 10 0 1 0 0 0 17 0 0 0 2 0 0 15 0 2 0 0 0 18 0 0 0 4 0 0 21 0 3 0 0 0 19 0 0 0 7 0 0 10 0 2 0 0 0 20 0 0 0 4 0 0 15 0 2 11 0 0

21 0 0 0 5 0 0 12 0 2 13 0 1 22 0 0 0 8 0 0 12 0 3 5 0 0 23 0 0 0 5 0 0 8 0 2 11 0 2 24 0 0 0 2 0 0 16 0 3 4 0 1 25 0 0 0 0 0 0 15 0 3 4 0 0

26 0 0 0 0 0 0 14 0 4 5 0 1 27 0 0 0 0 0 0 12 0 3 7 0 2 28 0 0 0 0 0 0 10 0 3 8 0 3 29 0 0 0 5 0 0 12 0 3 9 0 3 30 0 0 0 6 0 0 12 1 5 10 0 4 31 --- --- --- 5 0 0 13 0 4 --- --- ---

Month 0 0 0 8 0 0 21 0 2 16 0 1

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 14 —

TURBIDITY, WATER, UNFILT, NEAR IR LED LIGHT, 780-900 NM, DETECT ANG. 90 DEG, FORMAZIN NEPHELOMETRIC UNITS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 24 6.2 11 12 5.0 7.5 10 2.8 4.5 6.5 4.4 5.3 2 26 5.6 11 17 5.4 9.6 7.3 2.4 3.8 6.3 4.1 4.8 3 30 6.2 9.7 20 5.7 12 8.7 2.4 3.6 6.3 3.4 4.2 4 17 6.5 9.1 16 7.3 9.3 4.9 2.2 3.2 4.4 3.1 3.7 5 23 6.2 9.3 11 5.4 7.5 10 2.5 4.0 3.9 2.7 3.3

6 15 5.3 8.6 14 4.0 6.1 8.5 2.9 4.3 5.8 2.7 3.5 7 17 5.6 8.7 17 4.0 7.2 5.1 2.5 3.3 7.5 2.7 3.5 8 12 5.0 8.2 21 4.8 10 8.1 2.5 3.7 13 2.7 3.9 9 23 4.3 6.6 15 4.3 6.5 9.7 2.8 3.7 6.2 2.8 3.6

10 10 4.4 6.3 9.4 3.4 5.3 16 2.7 4.7 6.9 2.9 4.0

11 19 5.5 8.8 20 4.3 7.1 7.7 2.9 4.3 34 3.1 6.4 12 17 5.6 10 26 4.0 9.5 7.2 3.7 5.4 37 3.3 5.6 13 26 6.5 11 28 4.5 9.9 8.0 4.0 5.5 8.1 3.0 4.0 14 19 5.9 11 69 4.7 13 20 3.8 5.6 4.9 2.7 3.6 15 27 4.1 11 68 4.4 11 6.4 3.8 4.9 5.9 2.8 3.7

16 24 4.9 9.6 18 4.1 8.0 14 3.8 5.3 3.8 2.8 3.2 17 36 5.1 9.5 12 3.8 6.2 9.3 3.6 4.9 5.4 2.6 3.3 18 32 4.2 9.1 17 2.9 5.8 12 3.3 4.6 6.0 2.9 3.8 19 42 3.4 9.0 13 2.6 4.8 6.2 3.2 4.4 5.8 3.0 3.7 20 12 3.4 6.3 8.1 2.5 4.0 9.6 3.9 4.9 6.4 2.9 3.8

21 29 2.3 6.2 8.7 2.3 4.1 30 5.7 9.3 6.6 2.9 3.6 22 15 3.9 8.5 8.2 2.0 3.2 9.7 5.8 7.1 5.1 2.9 3.5 23 19 5.3 9.1 14 2.2 3.9 16 6.5 9.8 5.3 2.8 3.3 24 17 4.7 8.8 6.8 1.4 3.6 28 5.8 15 5.1 2.6 3.2 25 16 4.4 7.6 16 2.6 4.5 21 8.1 15 4.9 2.5 3.2

26 25 4.7 9.1 10 2.6 4.3 15 8.3 12 6.2 2.7 3.4 27 21 4.5 8.1 15 2.3 4.3 13 7.4 11 4.3 2.8 3.4 28 35 4.6 8.9 8.4 2.3 3.8 12 6.6 8.6 6.1 2.6 3.4 29 170 5.1 20 19 2.1 4.2 17 6.5 9.6 10 2.4 3.4 30 13 4.0 7.4 7.2 2.7 3.9 10 5.7 7.8 8.2 2.4 3.4 31 12 3.9 6.9 --- --- --- 9.9 5.4 6.5 12 2.7 5.5

Month 170 2.3 9.2 69 1.4 6.7 30 2.2 6.5 37 2.4 3.9

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 15 —

TURBIDITY, WATER, UNFILT, NEAR IR LED LIGHT, 780-900 NM, DETECT ANG. 90 DEG, FORMAZIN NEPHELOMETRIC UNITS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 10 3.3 5.6 11 4.6 6.8 9.2 2.1 3.9 18 2.9 6.5 2 18 6.7 11 10 4.7 7.7 11 2.0 4.1 17 2.9 6.7 3 32 9.7 18 8.6 4.3 6.5 11 2.3 4.2 21 2.7 7.2 4 19 6.5 12 7.4 4.7 5.9 7.1 3.2 4.3 20 3.0 7.9 5 14 8.4 11 8.5 4.6 5.4 6.5 3.9 4.9 22 3.0 8.9

6 11 6.6 8.5 11 3.8 5.2 14 4.4 6.3 17 2.9 8.3 7 17 6.5 10 13 4.0 6.7 12 4.0 6.1 17 2.3 7.6 8 22 8.7 14 22 3.9 5.9 10 3.6 5.5 26 2.5 9.9 9 56 7.4 14 20 2.9 5.1 11 3.7 5.6 20 2.3 9.0

10 110 6.1 26 5.4 2.7 3.7 12 3.1 5.1 12 2.8 5.9

11 9.1 5.5 6.7 6.1 3.2 4.0 10 2.5 5.0 15 2.4 7.3 12 34 4.2 6.3 7.1 3.3 4.2 14 4.1 7.3 12 2.2 6.0 13 10 4.2 5.1 11 3.3 6.9 29 9.3 16 15 2.3 7.3 14 6.9 3.7 4.9 17 6.6 10 28 13 19 16 2.4 8.6 15 6.1 3.3 4.5 38 7.7 15 20 11 15 17 3.0 8.4

16 5.6 3.2 4.1 36 8.0 20 14 8.6 11 12 2.4 6.0 17 14 3.0 5.1 48 9.8 17 13 6.2 8.6 18 2.6 5.8 18 28 5.2 8.2 32 11 19 16 5.0 7.3 21 1.8 6.2 19 7.7 4.8 6.1 20 7.8 14 15 4.8 7.2 18 2.1 6.7 20 6.1 3.7 4.7 15 5.0 10 31 5.7 10 24 2.2 5.8

21 8.0 3.4 4.5 12 5.3 8.3 22 6.1 12 14 1.8 5.2 22 8.2 3.6 4.9 9.1 5.5 7.1 25 8.6 16 16 2.5 7.9 23 12 3.4 4.8 9.5 4.8 7.1 24 11 16 18 3.4 7.9 24 7.5 3.0 4.5 10 5.4 6.8 46 13 23 13 1.8 6.0 25 14 3.1 4.7 14 5.0 6.7 39 14 22 18 4.7 10

26 7.5 3.0 3.7 11 4.7 6.2 25 9.0 15 24 4.2 12 27 24 3.2 6.9 --- --- --- 20 7.4 12 19 5.0 9.2 28 8.7 3.8 6.1 9.8 2.2 4.0 21 5.4 10 20 5.6 10 29 --- --- --- 5.3 2.4 3.8 17 4.2 8.8 21 6.7 11 30 --- --- --- 6.9 1.9 3.5 16 3.6 7.5 22 8.1 12 31 --- --- --- 8.6 1.7 3.7 --- --- --- 19 6.5 10

Month 110 3.0 8.1 --- --- --- 46 2.0 10 26 1.8 8.0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 16 —

TURBIDITY, WATER, UNFILT, NEAR IR LED LIGHT, 780-900 NM, DETECT ANG. 90 DEG, FORMAZIN NEPHELOMETRIC UNITS (MAIN) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 16 4.9 8.0 14 3.1 5.3 7.3 2.5 4.3 18 1.7 5.8 2 18 5.1 8.0 8.8 2.8 5.5 12 2.5 4.7 16 2.1 5.7 3 12 3.5 6.7 14 4.3 7.1 9.8 2.2 5.1 14 2.5 6.4 4 17 3.1 7.6 19 4.7 8.3 17 2.8 6.3 15 3.2 6.7 5 14 2.9 5.6 110 5.6 39 21 3.1 6.7 14 3.9 7.2

6 13 2.8 5.8 71 22 43 13 2.8 6.0 18 2.6 8.2 7 17 2.9 7.2 32 8.9 18 20 3.4 7.9 34 3.1 9.1 8 10 4.7 7.1 20 6.3 11 17 3.4 6.9 86 2.6 9.8 9 19 5.1 8.4 15 6.3 9.7 28 4.0 8.8 60 1.6 7.7

10 18 3.7 7.2 12 7.0 9.2 12 4.2 7.4 82 4.2 10

11 11 3.5 6.3 14 5.1 8.2 14 4.2 7.1 74 2.2 9.5 12 18 3.4 8.1 13 5.5 9.3 17 5.0 8.4 29 2.0 5.9 13 15 4.7 8.5 16 5.6 8.7 13 3.9 7.9 48 2.3 7.0 14 23 5.5 9.6 18 4.7 8.6 12 3.4 7.2 16 3.9 7.8 15 29 5.9 11 13 4.5 7.9 25 3.7 7.6 11 2.8 6.4

16 23 5.6 11 12 4.8 7.2 12 2.4 6.8 22 4.4 7.8 17 15 4.4 7.3 13 3.7 7.6 16 2.8 7.1 15 4.5 8.2 18 12 1.7 5.0 14 6.7 8.6 28 2.7 7.5 16 4.7 8.4 19 13 1.8 5.0 27 5.7 8.7 53 2.8 10 19 4.3 9.7 20 11 2.5 5.1 13 4.1 7.8 84 4.6 15 18 4.0 7.7

21 8.8 2.7 4.7 23 4.1 7.6 70 2.8 15 34 3.5 8.3 22 11 2.9 5.5 42 4.6 7.9 73 3.8 15 16 3.3 5.8 23 15 3.1 6.5 19 4.1 7.2 78 5.1 15 18 2.2 5.9 24 21 2.8 5.5 20 3.3 6.4 49 3.3 13 12 2.4 4.8 25 21 2.0 4.6 11 3.8 6.1 31 3.5 11 19 1.5 4.5

26 13 2.0 4.1 15 3.7 7.3 36 3.0 9.1 28 1.4 3.8 27 8.2 1.9 4.1 12 5.3 8.5 38 2.9 7.7 9.1 0.6 3.1 28 7.4 1.8 3.8 14 3.7 7.5 20 2.6 7.5 26 1.1 4.2 29 7.5 1.1 3.8 17 4.1 6.4 16 1.3 6.3 10 1.3 3.3 30 8.2 2.6 4.6 14 3.4 6.0 17 1.1 5.4 14 1.3 3.7 31 --- --- --- 20 2.2 5.0 24 2.0 5.8 --- --- ---

Month 29 1.1 6.5 110 2.2 10 84 1.1 8.4 86 0.6 6.7

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 17 —

TEMPERATURE, WATER, DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 18.7 17.9 18.2 13.6 13.1 13.4 6.0 4.0 4.5 0.5 0.2 0.3 2 18.4 18.0 18.2 13.1 12.4 12.8 6.0 4.1 4.9 0.4 -0.1 0.1 3 18.7 17.6 18.1 12.4 11.6 12.0 5.8 4.4 5.1 0.1 -0.2 -0.1 4 18.1 17.6 17.8 11.7 11.1 11.4 6.4 4.6 5.3 0.3 -0.1 0.0 5 19.1 17.8 18.2 11.2 10.6 11.0 6.5 4.9 5.5 0.2 -0.1 0.1

6 19.1 18.1 18.5 10.7 9.8 10.3 5.6 4.2 4.8 1.4 0.0 0.3 7 18.4 17.3 18.0 10.6 7.6 9.4 5.8 4.2 4.7 0.9 0.1 0.3 8 18.0 16.8 17.5 8.3 7.0 7.6 5.5 4.8 5.0 1.3 0.1 0.5 9 17.6 16.5 17.1 8.1 6.6 7.2 5.5 4.9 5.2 1.1 0.5 0.7

10 17.3 16.5 16.9 7.7 6.8 7.1 7.4 4.8 5.4 1.4 0.7 1.0

11 16.8 15.9 16.5 7.7 6.9 7.3 5.6 5.2 5.3 3.4 0.8 1.3 12 16.3 14.4 15.5 8.7 7.4 7.9 5.2 4.8 5.0 2.8 1.2 1.7 13 15.0 14.2 14.6 10.0 8.2 8.6 5.0 4.5 4.7 2.2 1.6 2.0 14 14.6 14.1 14.3 10.4 8.2 8.6 4.6 4.0 4.2 3.0 2.2 2.6 15 15.3 14.3 14.7 9.9 8.1 8.4 4.1 3.6 3.8 3.1 2.7 2.9

16 15.3 13.9 14.5 8.7 8.0 8.3 5.8 3.5 3.8 3.0 2.6 2.8 17 14.8 13.4 13.9 8.3 7.4 7.8 5.1 3.4 3.8 3.1 2.6 2.9 18 14.6 13.6 14.1 8.3 6.9 7.4 4.2 3.6 3.8 2.6 1.7 2.1 19 15.7 14.3 14.8 8.3 6.7 7.2 3.9 3.6 3.7 2.3 1.4 1.8 20 15.7 14.9 15.1 7.8 6.3 6.9 4.6 3.4 3.7 2.1 1.4 1.9

21 14.9 14.4 14.7 7.6 6.6 6.8 4.7 3.8 4.2 1.8 1.1 1.3 22 14.7 14.0 14.5 7.6 6.6 6.8 4.4 3.9 4.2 1.3 0.3 0.9 23 14.2 13.8 14.0 8.0 6.4 7.0 4.0 3.4 3.8 0.7 0.0 0.3 24 14.0 13.8 13.9 8.4 6.1 7.0 3.4 2.8 3.0 0.2 -0.2 0.0 25 14.3 13.8 14.0 6.8 5.6 6.0 2.8 2.2 2.5 0.5 -0.1 0.0

26 14.6 13.7 14.1 6.2 5.4 5.8 2.3 1.9 2.1 0.4 -0.1 0.1 27 15.0 13.9 14.3 7.3 5.4 5.7 3.4 1.9 2.1 0.4 -0.1 0.0 28 15.2 13.9 14.2 6.6 5.2 5.6 2.0 1.4 1.6 0.8 0.0 0.1 29 15.7 13.6 14.5 6.0 4.3 4.9 1.5 1.0 1.3 0.7 0.0 0.2 30 15.4 13.9 14.2 4.8 4.0 4.2 1.1 0.3 0.6 0.9 0.0 0.3 31 14.1 13.4 13.8 --- --- --- 0.4 0.0 0.2 1.7 0.6 1.1

Month 19.1 13.4 15.6 13.6 4.0 8.0 7.4 0.0 3.8 3.4 -0.2 1.0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 18 —

TEMPERATURE, WATER, DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 1.2 0.4 0.8 3.7 3.1 3.3 8.2 6.9 7.3 14.2 12.6 13.4 2 0.9 0.2 0.6 3.5 3.1 3.3 7.6 6.7 7.1 14.9 13.5 14.1 3 0.7 0.1 0.4 3.6 2.9 3.2 6.8 6.0 6.5 15.6 14.2 15.0 4 0.6 0.0 0.3 3.4 2.7 3.1 6.3 5.5 6.0 16.4 15.0 15.6 5 0.2 0.0 0.1 3.7 2.4 3.0 6.8 6.0 6.3 16.9 15.3 16.0

6 0.5 0.0 0.2 3.7 3.1 3.4 6.9 5.9 6.3 17.4 16.0 16.6 7 0.3 0.0 0.1 3.6 3.2 3.4 7.5 6.0 6.7 18.2 16.6 17.4 8 0.6 -0.1 0.1 3.4 2.2 2.7 8.4 6.7 7.5 18.3 17.0 17.9 9 0.0 -0.1 -0.1 3.2 2.2 2.7 9.6 7.6 8.6 18.2 16.5 17.8

10 0.3 -0.1 0.0 3.7 2.7 3.2 10.2 8.8 9.5 19.1 17.4 18.3

11 0.3 -0.1 0.0 4.3 3.4 3.8 10.5 9.5 9.8 18.8 18.0 18.6 12 0.1 -0.1 0.0 5.3 4.1 4.7 9.8 7.8 8.7 19.2 18.2 18.6 13 0.3 -0.1 0.0 6.2 5.1 5.7 7.8 7.2 7.4 18.8 17.8 18.4 14 0.5 -0.1 0.1 6.0 4.5 5.6 7.6 6.8 7.1 18.0 17.1 17.7 15 0.8 0.0 0.4 4.5 2.6 3.3 7.3 6.5 6.9 17.6 16.8 17.3

16 1.2 0.5 0.9 2.6 2.0 2.3 8.0 6.6 7.3 17.7 16.3 17.0 17 1.1 0.4 0.8 2.5 1.8 2.1 8.9 7.7 8.2 17.9 16.5 17.2 18 0.7 0.1 0.3 2.4 1.6 2.0 9.1 8.4 8.7 17.7 16.6 17.2 19 1.3 0.3 0.8 2.5 1.9 2.1 9.8 8.9 9.3 17.3 16.2 17.0 20 1.6 0.7 1.2 3.1 1.9 2.4 10.2 9.6 9.9 18.3 16.4 17.5

21 1.5 0.4 0.9 2.8 2.2 2.4 10.5 9.6 10.1 19.8 17.4 18.6 22 1.3 0.3 0.9 2.9 2.1 2.4 10.3 9.2 9.8 20.2 17.6 19.4 23 1.4 1.0 1.3 3.4 2.2 2.8 9.7 9.2 9.4 20.4 19.4 19.9 24 1.9 1.4 1.6 3.8 2.7 3.2 10.1 8.9 9.5 20.8 19.0 20.3 25 2.6 1.5 1.9 4.0 3.6 3.8 10.7 9.3 10 19.0 16.5 17.6

26 2.5 1.8 2.2 4.7 3.7 4.1 11.6 10.2 10.8 16.5 15.7 16.1 27 3.3 2.4 2.8 5.3 4.0 4.7 12.5 10.5 11.3 16.4 15.1 15.6 28 3.8 2.8 3.2 5.4 4.7 4.9 12.9 11.1 11.9 15.3 14.2 14.6 29 --- --- --- 6.9 4.9 5.6 12.6 11.7 12.2 14.8 13.5 14.1 30 --- --- --- 7.4 5.6 6.3 13.4 12.2 12.7 16.0 13.9 14.8 31 --- --- --- 7.2 6.3 6.7 --- --- --- 17.4 15.3 16.2

Month 3.8 -0.1 0.8 7.4 1.6 3.6 13.4 5.5 8.8 20.8 12.6 17.0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 19 —

TEMPERATURE, WATER, DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 18.9 16.8 17.7 23.4 23.1 23.3 25.3 24.3 24.9 24.6 23.8 24.2 2 20.1 18.6 19.4 23.4 22.9 23.1 25.8 24.4 25.1 25.0 23.9 24.6 3 20.9 20.0 20.4 23.6 22.7 23.1 25.4 24.4 25.1 25.0 24.1 24.8 4 21.4 20.1 20.7 24.2 23.1 23.7 25.5 24.1 24.8 25.2 24.4 24.7 5 21.9 20.4 21.1 24.4 23.2 23.8 25.2 23.4 24.5 24.6 23.6 24.2

6 21.8 20.6 21.0 24.4 22.9 23.7 25.2 23.4 24.2 23.7 22.4 23.1 7 20.8 19.9 20.3 25.1 23.6 24.3 25.5 23.6 24.4 23.5 21.9 22.8 8 19.9 18.5 19.1 25.6 24.3 24.9 24.9 23.6 24.3 23.3 21.7 22.7 9 19.5 18.4 18.9 25.5 24.6 25.0 24.4 23.7 24.3 22.7 21.5 22.3

10 19.1 18.5 18.8 26.2 24.8 25.3 25.2 24.0 24.4 22.5 21.6 22.1

11 19.4 18.1 18.6 25.6 24.8 25.2 25.0 23.7 24.3 23.9 21.4 22.4 12 18.9 17.9 18.4 25.3 24.4 24.7 25.0 23.7 24.3 23.7 22.3 23.0 13 18.2 16.6 17.3 24.8 24.2 24.4 24.4 23.4 23.9 23.8 22.9 23.4 14 16.8 16.1 16.3 25.2 24.2 24.5 24.2 23.1 23.7 23.3 22.1 22.8 15 17.1 15.8 16.3 26.2 24.6 25.2 23.9 22.8 23.4 22.9 22.1 22.6

16 16.9 15.9 16.4 26.9 25.2 26.0 24.1 23.0 23.7 22.1 20.6 21.4 17 18.2 16.6 17.3 27.4 26.1 26.6 24.4 22.8 23.7 20.6 19.8 20.1 18 18.9 17.7 18.3 27.8 26.8 27.3 23.9 22.3 23.5 20.4 19.5 19.7 19 19.4 18.6 19.0 28.7 26.8 28.0 24.2 22.7 23.4 20.3 19.1 19.5 20 19.8 18.9 19.4 29.0 27.9 28.4 24.7 22.9 23.7 20.3 18.8 19.4

21 20.1 19.1 19.6 29.1 27.6 28.5 25.2 22.9 24.1 20.3 19.4 19.7 22 20.9 19.4 20.2 28.6 26.5 28.3 24.6 23.4 24.3 20.3 19.7 19.9 23 21.8 20.1 20.9 28.5 27.5 27.9 25.1 23.4 24.4 19.8 18.8 19.3 24 23.0 21.5 22.2 28.4 27.4 27.8 24.6 22.6 24.0 19.4 18.4 19.0 25 24.3 22.6 23.4 27.5 25.2 26.1 24.8 23.3 24.0 19.3 18.2 18.9

26 25.1 23.8 24.5 25.2 23.9 24.6 24.5 22.9 24.0 19.5 18.7 19.1 27 25.3 24.4 24.8 24.8 23.6 24.1 24.9 23.4 24.2 18.8 18.2 18.6 28 25.2 24.3 24.7 25.0 24.0 24.5 25.7 24.1 24.9 18.9 17.8 18.4 29 24.6 24.1 24.3 25.6 24.4 24.9 25.3 23.8 24.7 19.2 18.0 18.7 30 24.1 23.4 23.8 25.4 24.4 24.9 24.8 23.6 24.1 19.5 18.3 18.8 31 --- --- --- 25.4 24.6 25.0 24.7 23.4 24.2 --- --- ---

Month 25.3 15.8 20.1 29.1 22.7 25.4 25.8 22.3 24.2 25.2 17.8 21.3

Max Min Mean

Year 29.1 -0.2 12.5

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 20 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 6,820 166 1,050 181 130 143 19,900 542 6,600 295 140 151 2 16,700 169 2,540 158 114 122 20,500 933 9,000 2,400 146 465 3 14,100 176 2,880 136 106 112 16,300 420 5,940 172 148 156 4 4,950 162 767 125 104 110 18,000 544 6,680 2,230 142 556 5 10,000 160 1,670 278 110 122 17,300 169 4,700 404 140 154

6 11,600 158 2,420 1,470 110 309 10,200 170 2,450 12,700 140 1,830 7 8,800 156 2,020 14,700 112 2,920 14,900 239 4,160 7,250 140 851 8 13,800 838 5,220 4,920 115 1,290 11,700 163 1,830 10,900 139 1,200 9 14,600 895 5,440 11,200 117 1,920 5,830 162 656 6,780 145 550

10 13,900 1,040 5,980 7,330 119 1,020 24,400 161 3,720 332 145 161

11 8,260 168 1,240 4,780 121 626 847 151 204 29,100 145 4,120 12 7,620 169 1,650 11,600 141 1,380 532 149 183 17,700 149 2,930 13 15,000 162 2,940 14,600 145 1,470 2,240 153 259 3,990 149 605 14 6,760 164 1,130 27,600 140 2,950 278 143 163 1,190 153 236 15 17,400 164 1,720 27,000 143 2,850 579 133 184 335 164 177

16 11,100 165 1,060 10,300 146 952 22,000 130 2,610 202 159 170 17 20,800 164 1,820 2,030 147 269 15,700 129 3,170 159 146 153 18 16,500 160 1,690 10,700 141 1,340 6,720 131 1,020 153 145 149 19 25,300 160 2,850 15,200 139 3,000 281 133 149 167 152 161 20 6,630 157 1,110 11,100 138 3,010 8,470 142 943 175 155 162

21 180 156 162 10,900 138 2,740 768 131 200 3,930 155 564 22 161 132 150 10,900 149 2,220 131 117 123 3,980 151 579 23 180 117 133 15,600 148 4,280 122 111 117 4,970 157 469 24 1,050 114 235 19,100 220 4,640 111 97 103 740 148 186 25 2,880 117 460 8,340 150 1,470 106 99 101 8,010 150 1,200

26 9,780 122 2,000 7,960 150 1,580 124 99 104 7,420 148 1,850 27 17,600 126 3,030 21,800 154 4,420 13,700 104 1,520 6,830 147 729 28 23,600 129 4,270 16,100 172 3,680 138 109 121 13,500 150 2,700 29 42,500 190 17,400 11,700 159 1,500 429 124 158 11,800 150 2,440 30 35,800 232 4,740 6,680 154 746 567 156 180 11,000 151 2,500 31 665 144 262 --- --- --- 161 140 148 7,370 152 1,280

Month 42,500 114 2,580 27,600 104 1,770 24,400 97 1,850 29,100 139 949

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 21 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 227 161 185 186 166 178 1,160 143 197 143 111 117 2 229 145 195 202 179 192 147 141 143 144 117 122 3 145 117 128 218 168 176 144 131 139 2,980 118 339 4 133 121 126 184 165 168 131 123 127 7,150 122 787 5 134 126 131 1,440 162 336 131 126 129 5,230 126 607

6 135 126 132 7,220 166 1,870 132 125 128 7,500 128 806 7 140 123 129 8,270 166 2,200 134 126 129 4,730 133 645 8 7,360 121 866 21,900 165 2,770 135 127 129 7,630 138 720 9 1,820 121 274 12,600 168 1,750 137 127 129 10,600 143 1,190

10 11,800 125 1,910 784 175 204 135 127 128 4,190 142 578

11 10,000 123 1,770 245 184 216 128 115 121 4,760 142 458 12 1,460 124 214 250 216 230 115 98 108 1,550 150 253 13 153 136 143 220 174 188 99 92 94 183 145 150 14 171 149 158 186 145 171 98 93 95 1,230 142 203 15 179 171 174 145 121 128 102 97 100 847 140 246

16 250 162 173 127 119 122 98 95 97 1,070 140 289 17 1,360 165 267 130 127 128 105 97 101 2,410 138 368 18 --- --- --- 130 126 128 104 98 100 6,800 138 1,360 19 4,060 184 944 127 120 123 98 97 98 10,100 140 1,840 20 1,540 166 476 139 125 129 100 94 96 13,900 147 2,700

21 1,170 162 262 169 139 156 105 100 103 13,500 151 2,850 22 13,300 158 3,440 180 165 174 101 88 92 --- --- --- 23 9,170 180 2,070 168 158 162 92 87 89 3,790 149 419 24 10,700 176 1,860 5,850 154 596 94 92 93 216 137 148 25 12,900 164 2,060 10,400 153 1,070 99 93 96 140 114 123

26 4,500 162 476 3,340 152 384 107 94 100 116 109 112 27 21,600 169 2,580 182 152 158 110 104 107 110 96 103 28 195 161 171 1,660 151 184 119 104 106 96 87 92 29 --- --- --- 3,260 152 348 135 104 107 87 85 86 30 --- --- --- 207 151 158 149 106 111 91 85 87 31 --- --- --- 191 147 153 --- --- --- 95 91 93

Month --- --- --- 21,900 119 482 1,160 87 113 --- --- ---

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 22 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 96 91 94 116 111 114 10,300 151 1,980 14,000 519 5,370 2 98 93 95 117 113 115 12,000 164 2,440 11,800 205 3,520 3 103 94 98 118 110 112 12,300 162 2,750 11,000 187 2,160 4 107 96 101 114 101 107 12,800 176 3,010 1,820 178 352 5 117 102 110 105 100 103 19,100 171 4,000 7,030 168 720

6 118 107 110 106 99 101 14,200 225 4,420 14,400 169 2,370 7 115 105 108 102 100 102 16,000 174 2,840 15,600 172 3,170 8 106 93 101 110 102 106 16,200 184 4,120 22,000 195 5,460 9 117 106 113 111 107 109 12,900 175 2,960 20,200 174 5,310

10 113 99 106 118 107 112 2,450 172 383 13,600 170 2,720

11 100 93 96 122 116 118 201 160 176 26,300 191 5,940 12 106 99 103 122 118 120 196 141 156 25,800 602 8,220 13 103 89 98 121 118 119 12,400 138 1,550 18,900 209 4,830 14 93 85 88 124 119 121 --- --- --- 1,470 168 325 15 98 90 95 128 123 126 13,200 141 1,690 239 167 184

16 90 85 86 144 128 132 15,500 153 2,130 220 147 160 17 95 86 90 3,170 131 289 21,800 165 3,610 1,140 141 191 18 102 95 98 7,240 133 494 26,100 196 5,290 371 128 159 19 113 102 105 12,700 137 965 18,300 187 4,230 766 131 178 20 115 109 112 2,920 140 344 22,600 190 3,600 18,700 137 1,960

21 114 107 111 7,980 139 516 19,800 204 4,850 20,400 146 3,060 22 132 109 114 12,100 141 743 21,000 203 4,960 9,560 151 2,150 23 163 117 122 4,920 142 780 16,000 193 3,330 20,900 149 3,150 24 186 121 133 3,550 139 338 25,300 202 6,390 7,700 156 1,980 25 350 128 150 184 145 153 18,800 207 5,810 8,970 155 1,550

26 429 134 155 158 129 142 20,700 595 6,960 9,350 246 3,020 27 217 134 147 196 129 138 16,800 601 5,950 13,500 289 3,950 28 209 132 140 1,730 131 195 15,600 198 4,350 16,100 744 5,540 29 140 132 135 8,810 138 927 19,600 687 5,910 17,400 1,280 6,650 30 139 111 127 7,650 140 1,040 18,100 2,630 8,380 19,300 994 7,280 31 --- --- --- 7,860 144 1,420 20,200 684 7,150 --- --- ---

Month 429 85 111 12,700 99 332 --- --- --- 26,300 128 3,050

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

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SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 4 0 0 0 0 0 12 0 4 0 0 0 2 10 0 1 0 0 0 12 0 5 1 0 0 3 8 0 2 0 0 0 10 0 3 0 0 0 4 3 0 0 0 0 0 11 0 4 1 0 0 5 6 0 0 0 0 0 10 0 3 0 0 0

6 7 0 1 0 0 0 6 0 1 7 0 0 7 5 0 1 9 0 2 9 0 2 4 0 0 8 8 0 3 3 0 0 7 0 0 6 0 0 9 8 0 3 6 0 1 3 0 0 4 0 0

10 8 0 3 4 0 0 15 0 2 0 0 0

11 5 0 0 3 0 0 0 0 0 18 0 2 12 4 0 0 7 0 0 0 0 0 10 0 2 13 9 0 2 8 0 0 1 0 0 2 0 0 14 4 0 0 17 0 2 0 0 0 0 0 0 15 10 0 0 17 0 2 0 0 0 0 0 0

16 6 0 0 6 0 0 13 0 1 0 0 0 17 12 0 1 1 0 0 9 0 2 0 0 0 18 10 0 0 6 0 0 4 0 0 0 0 0 19 15 0 2 9 0 2 0 0 0 0 0 0 20 4 0 0 6 0 2 5 0 0 0 0 0

21 0 0 0 6 0 1 0 0 0 2 0 0 22 0 0 0 6 0 1 0 0 0 2 0 0 23 0 0 0 9 0 2 0 0 0 3 0 0 24 0 0 0 11 0 3 0 0 0 0 0 0 25 1 0 0 5 0 0 0 0 0 4 0 0

26 5 0 1 4 0 0 0 0 0 4 0 0 27 10 0 2 13 0 2 8 0 0 4 0 0 28 14 0 2 9 0 2 0 0 0 8 0 1 29 27 0 11 7 0 0 0 0 0 7 0 1 30 23 0 3 4 0 0 0 0 0 6 0 1 31 0 0 0 --- --- --- 0 0 0 4 0 0

Month 27 0 1 17 0 0 15 0 0 18 0 0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 24 —

SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 2 0 0 4 0 0 0 0 0 0 0 0 0 4 0 0 5 0 0 0 0 0 0 0 0 0 3 0 0

6 0 0 0 4 0 0 0 0 0 4 0 0 7 0 0 0 5 0 1 0 0 0 3 0 0 8 4 0 0 13 0 2 0 0 0 4 0 0 9 0 0 0 7 0 0 0 0 0 6 0 0

10 7 0 1 0 0 0 0 0 0 2 0 0

11 6 0 0 0 0 0 0 0 0 3 0 0 12 0 0 0 0 0 0 0 0 0 0 0 0 13 0 0 0 0 0 0 0 0 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 0 0 15 0 0 0 0 0 0 0 0 0 0 0 0

16 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0 0 0 0 1 0 0 18 --- --- --- 0 0 0 0 0 0 4 0 0 19 2 0 0 0 0 0 0 0 0 6 0 0 20 0 0 0 0 0 0 0 0 0 8 0 1

21 0 0 0 0 0 0 0 0 0 8 0 2 22 8 0 2 0 0 0 0 0 0 --- --- --- 23 5 0 1 0 0 0 0 0 0 2 0 0 24 6 0 0 3 0 0 0 0 0 0 0 0 25 7 0 1 6 0 0 0 0 0 0 0 0

26 2 0 0 2 0 0 0 0 0 0 0 0 27 13 0 1 0 0 0 0 0 0 0 0 0 28 0 0 0 0 0 0 0 0 0 0 0 0 29 --- --- --- 2 0 0 0 0 0 0 0 0 30 --- --- --- 0 0 0 0 0 0 0 0 0 31 --- --- --- 0 0 0 --- --- --- 0 0 0

Month --- --- --- 13 0 0 0 0 0 --- --- ---

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 25 —

SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (TOP) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 0 0 0 0 0 0 6 0 1 8 0 3 2 0 0 0 0 0 0 7 0 1 7 0 2 3 0 0 0 0 0 0 7 0 1 6 0 1 4 0 0 0 0 0 0 7 0 2 0 0 0 5 0 0 0 0 0 0 11 0 2 4 0 0

6 0 0 0 0 0 0 8 0 2 8 0 1 7 0 0 0 0 0 0 9 0 2 9 0 2 8 0 0 0 0 0 0 9 0 2 13 0 3 9 0 0 0 0 0 0 7 0 2 12 0 3

10 0 0 0 0 0 0 1 0 0 8 0 1

11 0 0 0 0 0 0 0 0 0 16 0 3 12 0 0 0 0 0 0 0 0 0 16 0 5 13 0 0 0 0 0 0 7 0 0 11 0 3 14 0 0 0 0 0 0 --- --- --- 0 0 0 15 0 0 0 0 0 0 8 0 0 0 0 0

16 0 0 0 0 0 0 9 0 1 0 0 0 17 0 0 0 2 0 0 13 0 2 0 0 0 18 0 0 0 4 0 0 16 0 3 0 0 0 19 0 0 0 7 0 0 11 0 2 0 0 0 20 0 0 0 2 0 0 14 0 2 11 0 1

21 0 0 0 4 0 0 12 0 3 12 0 2 22 0 0 0 7 0 0 13 0 3 5 0 1 23 0 0 0 3 0 0 9 0 2 12 0 2 24 0 0 0 2 0 0 15 0 4 4 0 1 25 0 0 0 0 0 0 11 0 3 5 0 0

26 0 0 0 0 0 0 12 0 4 5 0 2 27 0 0 0 0 0 0 10 0 3 8 0 2 28 0 0 0 0 0 0 9 0 2 9 0 3 29 0 0 0 5 0 0 12 0 3 10 0 4 30 0 0 0 4 0 0 11 1 5 11 0 4 31 --- --- --- 4 0 0 12 0 4 --- --- ---

Month 0 0 0 7 0 0 --- --- --- 16 0 2

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 26 —

TEMPERATURE, WATER, DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 18.8 17.9 18.3 13.6 13.2 13.4 7.4 4.1 5.3 0.6 0.3 0.4 2 18.6 18.1 18.3 13.2 12.6 12.9 6.8 4.3 5.5 0.7 0.0 0.2 3 18.7 17.7 18.2 12.6 11.7 12.1 6.5 4.5 5.4 0.2 -0.1 0.0 4 18.3 17.7 17.9 11.8 11.2 11.5 7.4 4.8 5.9 0.4 0.0 0.2 5 19.1 17.9 18.3 11.3 10.7 11.0 6.9 5.0 5.8 0.3 0.0 0.2

6 19.1 18.2 18.6 10.9 9.9 10.4 7.0 4.4 5.2 2.6 0.1 0.6 7 19.0 17.5 18.3 12.2 8.9 10.2 6.9 4.5 5.3 1.5 0.2 0.5 8 18.5 17.0 17.9 9.3 7.1 7.9 6.0 4.9 5.2 2.0 0.2 0.7 9 18.0 16.6 17.4 9.1 6.7 7.5 6.1 5.0 5.3 2.0 0.6 0.8

10 17.6 16.5 17.1 8.1 7.0 7.3 8.3 4.9 5.7 1.4 0.8 1.1

11 17.0 16.0 16.6 8.1 7.0 7.4 5.7 5.3 5.4 4.3 0.9 1.6 12 16.4 14.5 15.6 9.8 7.5 8.1 5.4 5.0 5.1 3.8 1.3 1.9 13 15.4 14.4 14.7 10.9 8.3 8.8 6.2 4.6 4.9 2.6 1.7 2.1 14 14.7 14.2 14.4 11.2 8.3 8.9 4.7 4.0 4.3 3.1 2.3 2.7 15 15.6 14.3 14.8 10.6 8.2 8.6 5.1 3.7 3.9 3.1 2.8 3.0

16 15.6 14.0 14.7 9.5 8.0 8.4 7.2 3.6 4.2 3.0 2.7 2.9 17 15.3 13.5 14.0 8.8 7.5 7.9 5.7 3.5 4.1 3.1 2.7 3.0 18 15.1 13.6 14.2 9.0 7.0 7.5 5.2 3.7 4.0 2.7 1.8 2.2 19 16.3 14.4 14.9 9.0 6.8 7.4 4.1 3.6 3.8 2.4 1.5 1.9 20 15.8 15.0 15.2 8.2 6.5 7.2 5.9 3.5 4.0 2.2 1.5 2.0

21 15.0 14.5 14.8 8.1 6.7 7.1 4.8 3.8 4.3 2.8 1.2 1.6 22 14.8 14.1 14.6 8.3 6.7 7.1 4.5 4.0 4.3 2.0 0.4 1.1 23 14.2 13.8 14.1 8.9 6.5 7.5 4.0 3.5 3.9 1.9 0.1 0.5 24 14.1 13.8 13.9 9.2 6.2 7.4 3.5 2.9 3.1 0.3 0.0 0.1 25 14.4 13.8 14.1 7.2 5.8 6.2 2.9 2.3 2.6 1.5 0.0 0.3

26 14.8 13.8 14.2 6.5 5.6 5.9 2.4 2.0 2.2 1.3 0.0 0.3 27 15.4 14.0 14.5 8.1 5.5 6.1 6.3 2.0 3.0 0.7 0.0 0.1 28 15.6 14.0 14.5 7.9 5.3 6.0 2.1 1.5 1.7 1.2 0.0 0.3 29 15.8 13.7 14.8 6.5 4.4 5.1 1.6 1.1 1.3 1.1 0.0 0.3 30 15.6 14.0 14.4 5.1 4.0 4.4 1.3 0.4 0.7 1.4 0.1 0.5 31 14.2 13.5 13.9 --- --- --- 0.5 0.0 0.3 1.8 0.7 1.2

Month 19.1 13.5 15.7 13.6 4.0 8.2 8.3 0.0 4.1 4.3 -0.1 1.1

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 27 —

TEMPERATURE, WATER, DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 1.3 0.5 0.9 3.8 3.2 3.3 8.2 6.8 7.4 14.3 12.7 13.4 2 1.0 0.3 0.7 3.6 3.2 3.4 7.7 6.8 7.2 14.9 13.6 14.2 3 0.8 0.2 0.5 3.7 3.0 3.3 6.9 6.1 6.6 15.7 14.3 15.1 4 0.7 0.1 0.4 3.5 2.8 3.1 6.3 5.6 6.1 16.5 15.1 15.7 5 0.2 0.0 0.2 3.8 2.5 3.1 6.8 6.1 6.4 17.0 15.4 16.0

6 0.5 0.0 0.2 3.8 3.3 3.5 6.9 5.9 6.4 17.4 15.7 16.6 7 0.4 0.1 0.2 3.7 3.3 3.6 7.6 6.0 6.8 18.2 16.6 17.4 8 1.6 0.1 0.3 3.5 2.1 2.8 8.5 6.8 7.6 18.4 16.6 18.0 9 0.3 0.0 0.0 3.4 2.2 2.8 9.6 7.7 8.6 18.2 15.8 17.8

10 0.7 0.0 0.1 3.8 2.8 3.3 10.3 8.8 9.5 18.9 15.8 18.2

11 0.5 0.0 0.1 4.4 3.4 3.9 10.6 9.6 9.9 18.8 17.4 18.6 12 0.2 0.0 0.1 5.4 4.2 4.8 9.9 7.9 8.8 19.3 18.2 18.6 13 0.4 0.0 0.1 6.3 5.2 5.7 7.9 7.3 7.5 18.9 17.8 18.4 14 0.6 0.0 0.2 6.1 4.6 5.7 7.6 6.9 7.2 18.1 17.1 17.7 15 0.9 0.0 0.5 4.6 2.7 3.4 7.4 6.6 7.0 17.6 16.9 17.4

16 1.2 0.6 1.0 2.7 2.0 2.4 8.1 6.7 7.3 17.7 16.3 17.0 17 1.5 0.6 0.9 2.6 1.9 2.2 9.0 7.8 8.2 17.9 16.6 17.2 18 0.8 0.2 0.5 2.4 1.6 2.0 9.2 8.4 8.8 17.7 16.4 17.2 19 1.6 0.5 1.0 2.6 2.0 2.2 9.9 9.0 9.4 17.4 15.6 16.9 20 1.6 0.8 1.3 3.3 1.9 2.4 10.2 9.6 10 18.2 15.6 17.2

21 1.5 0.6 1.0 3.0 2.3 2.5 10.6 9.7 10.2 19.6 16.5 18.3 22 2.1 0.4 1.1 3.0 2.1 2.5 10.4 9.3 9.9 20.2 16.1 19.3 23 1.7 1.2 1.4 3.4 2.3 2.9 9.8 9.3 9.4 20.4 18.3 19.9 24 2.1 1.4 1.7 3.9 2.8 3.3 10.1 9.0 9.5 20.8 19.1 20.3 25 2.5 1.6 1.9 4.1 3.7 3.9 10.6 9.4 10 19.1 16.6 17.7

26 2.6 1.9 2.3 4.7 3.8 4.2 11.7 10.2 10.8 16.6 15.8 16.1 27 3.6 2.5 2.9 5.4 4.1 4.8 12.5 10.6 11.4 16.3 15.1 15.6 28 3.9 2.9 3.2 5.5 4.8 5.0 13.0 11.2 12.0 15.4 14.3 14.7 29 --- --- --- 7.0 5.0 5.6 12.7 11.8 12.3 14.6 13.6 14.1 30 --- --- --- 7.5 5.7 6.4 13.4 12.2 12.7 15.8 14.0 14.8 31 --- --- --- 7.3 6.3 6.7 --- --- --- 17.2 15.4 16.2

Month 3.9 0.0 0.9 7.5 1.6 3.7 13.4 5.6 8.8 20.8 12.7 17.0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 28 —

TEMPERATURE, WATER, DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 18.8 16.9 17.6 23.5 23.2 23.3 25.4 23.6 24.9 24.8 23.4 24.1 2 20.1 18.6 19.4 23.4 23.0 23.1 26.0 23.9 24.9 25.1 23.6 24.4 3 20.9 20.1 20.5 23.6 22.7 23.1 25.4 23.8 25.0 25.1 23.8 24.8 4 21.3 20.2 20.8 24.2 23.2 23.7 25.5 23.4 24.7 25.2 24.5 24.8 5 21.8 20.5 21.1 24.3 23.2 23.8 25.2 22.7 24.4 24.7 23.7 24.2

6 21.6 20.6 21.0 24.3 22.9 23.7 25.2 22.7 24.0 23.7 21.9 23.1 7 20.8 19.9 20.4 25.0 23.7 24.3 25.4 23.5 24.3 23.4 21.6 22.7 8 19.9 18.5 19.2 25.5 24.4 24.9 24.9 23.2 24.2 23.3 21.4 22.6 9 19.3 18.4 18.9 25.5 24.6 25.0 24.5 23.5 24.3 22.8 21.3 22.3

10 19.2 18.6 18.9 26.2 24.8 25.3 25.2 24.0 24.5 22.6 21.4 22.2

11 19.2 18.2 18.7 25.7 24.8 25.2 25.1 23.8 24.4 23.6 21.3 22.3 12 18.8 18.0 18.4 25.3 24.5 24.7 24.9 23.8 24.3 23.6 22.2 22.9 13 18.3 16.7 17.4 24.8 24.3 24.4 24.4 22.6 23.9 23.9 22.5 23.3 14 16.8 16.1 16.4 25.0 24.2 24.5 24.3 22.7 23.7 23.4 22.2 22.9 15 17.0 15.9 16.4 26.2 24.7 25.2 24.0 22.5 23.4 23.0 22.2 22.7

16 16.9 15.9 16.4 27.0 25.2 26.0 24.2 22.4 23.6 22.2 20.5 21.5 17 18.1 16.6 17.4 27.1 25.7 26.5 24.3 22.5 23.7 20.6 19.9 20.2 18 18.9 17.8 18.3 27.8 25.6 27.2 24.1 21.8 23.5 20.4 19.6 19.8 19 19.5 18.6 19.0 28.6 25.6 27.9 24.2 22.3 23.4 20.3 19.2 19.5 20 19.8 19.0 19.4 29.0 27.0 28.4 24.7 22.5 23.7 20.4 18.8 19.4

21 20.0 19.2 19.6 29.2 25.8 28.5 25.1 22.4 24.0 20.4 19.4 19.7 22 20.9 19.5 20.2 28.7 24.7 28.2 24.7 23.0 24.2 20.3 19.8 19.9 23 21.8 20.1 20.9 28.7 24.5 27.8 25.1 22.6 24.3 19.9 18.9 19.3 24 23.0 21.6 22.2 28.5 26.6 27.8 24.6 21.9 23.8 19.4 18.5 19.1 25 24.2 22.4 23.4 27.6 25.3 26.2 24.6 23.1 23.9 19.3 18.2 18.9

26 25.1 23.8 24.5 25.3 24.0 24.6 24.4 22.7 23.8 19.3 18.8 19.1 27 25.3 24.5 24.8 24.8 23.6 24.2 24.9 22.5 23.9 19.0 18.5 18.8 28 25.3 24.4 24.7 25.0 24.1 24.6 25.5 23.0 24.5 18.8 18.1 18.5 29 24.7 24.1 24.3 25.6 24.1 24.9 25.7 22.7 24.4 19.4 18.5 18.8 30 24.2 23.5 23.8 25.4 24.1 24.9 24.7 23.0 23.9 19.6 18.6 18.9 31 --- --- --- 25.4 23.8 24.9 24.8 22.8 24.0 --- --- ---

Month 25.3 15.9 20.1 29.2 22.7 25.4 26.0 21.8 24.1 25.2 18.1 21.4

Max Min Mean

Year 29.2 -0.1 12.6

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 29 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 8,360 171 1,360 182 133 147 30,500 1,080 12,200 368 140 156 2 24,700 173 4,410 164 116 125 27,200 2,780 14,000 4,700 147 644 3 19,000 179 4,890 175 108 119 21,500 1,200 9,540 170 116 140 4 10,500 165 1,340 138 107 114 26,800 1,950 12,200 3,510 142 1,070 5 18,400 164 3,310 302 112 128 21,300 170 7,740 503 139 162

6 18,600 161 4,530 3,320 113 578 24,300 172 5,450 22,700 140 3,600 7 28,200 160 5,920 36,600 114 8,000 23,900 279 8,410 12,500 140 1,540 8 28,300 1,980 11,600 9,630 116 2,540 16,400 164 3,120 16,700 139 2,240 9 28,400 1,760 12,300 19,300 118 3,800 11,600 163 1,050 15,000 144 1,070

10 26,400 2,200 12,200 10,400 120 1,580 33,500 162 6,290 545 146 175

11 12,400 170 2,100 9,310 122 908 1,760 152 234 37,100 145 6,980 12 11,200 171 2,270 21,200 143 2,300 2,140 150 212 28,300 151 4,950 13 22,800 165 4,490 23,300 148 2,440 18,000 152 1,000 10,200 149 881 14 7,580 166 1,310 36,500 144 5,710 297 143 164 1,870 153 287 15 23,900 166 2,770 35,900 146 5,440 13,200 135 645 663 169 197

16 8,750 168 491 21,800 148 1,920 35,200 132 5,530 220 158 172 17 16,400 167 1,050 12,300 147 671 20,400 131 4,830 164 148 155 18 21,200 163 1,400 18,600 142 2,250 15,300 133 1,940 162 147 153 19 16,400 163 1,290 22,100 142 4,750 316 133 152 175 153 163 20 6,510 160 1,000 16,300 140 5,400 21,200 143 2,890 183 154 163

21 185 158 167 16,300 140 5,180 919 132 214 14,200 155 1,850 22 165 134 154 17,900 169 4,220 132 118 124 9,600 151 1,250 23 201 122 137 24,400 150 8,260 125 113 119 16,100 157 1,560 24 659 115 187 25,900 594 8,010 117 99 107 2,390 149 269 25 1,560 119 337 11,500 151 2,260 107 99 102 20,800 146 3,340

26 9,100 124 1,600 10,200 151 2,060 122 99 104 17,800 151 4,400 27 23,800 130 4,060 28,700 156 7,100 38,400 104 8,970 9,460 147 1,200 28 29,900 131 5,620 28,200 233 7,210 137 111 120 17,500 156 4,700 29 43,700 365 22,200 16,700 160 2,800 511 124 158 16,300 150 4,340 30 39,800 238 5,960 8,440 155 1,210 826 156 190 15,000 158 4,010 31 882 149 284 --- --- --- 162 139 148 8,340 152 1,390

Month 43,700 115 3,890 36,600 107 3,240 38,400 99 3,480 37,100 116 1,720

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

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SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 238 162 192 185 165 177 7,070 139 282 153 110 117 2 247 144 199 200 178 189 143 137 139 150 107 121 3 145 118 130 217 167 174 141 127 135 3,560 118 410 4 132 122 126 187 163 167 127 120 123 8,220 121 962 5 135 125 130 2,300 160 482 129 123 126 6,090 125 770

6 147 125 133 21,000 164 5,210 128 122 125 12,000 127 1,250 7 142 123 130 21,700 164 4,960 130 122 125 6,780 132 886 8 22,300 121 2,740 30,700 163 4,970 132 124 126 10,900 137 1,120 9 4,680 100 439 27,000 166 3,740 134 123 126 15,600 141 1,730

10 18,000 106 3,670 1,050 172 208 130 123 125 16,100 140 1,170

11 13,300 123 3,100 243 181 213 124 112 117 9,890 142 672 12 2,640 123 330 253 212 226 114 96 106 3,710 148 351 13 152 137 144 216 171 185 96 63 78 181 144 150 14 170 148 158 183 141 168 79 74 77 1,350 141 224 15 181 170 173 141 119 126 84 79 82 1,420 139 339

16 656 161 188 124 118 120 94 83 86 2,560 139 441 17 9,020 163 615 128 124 126 97 89 93 5,780 137 628 18 185 172 177 128 124 126 98 95 96 11,600 138 2,240 19 20,600 182 3,400 126 118 121 96 94 95 17,400 141 3,970 20 9,230 164 1,390 134 122 126 95 75 87 21,000 151 5,100

21 2,070 160 367 164 134 152 97 87 93 21,900 157 5,160 22 31,300 156 8,240 174 160 169 94 85 87 27,800 148 3,430 23 14,800 179 4,060 163 154 158 87 82 84 12,700 149 666 24 20,700 175 3,720 7,460 150 762 87 75 81 215 142 152 25 21,000 162 3,580 20,600 151 1,920 91 86 89 149 114 128

26 9,630 160 750 12,600 149 881 108 89 96 120 113 117 27 31,900 167 4,880 176 150 153 109 103 106 115 97 105 28 205 159 171 917 147 169 117 103 106 98 87 92 29 --- --- --- 7,760 148 488 126 104 107 90 84 86 30 --- --- --- 223 147 155 149 106 110 92 85 88 31 --- --- --- 184 144 149 --- --- --- 100 91 94

Month 31,900 100 1,550 30,700 118 870 7,070 63 110 27,800 84 1,060

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 31 —

SPECIFIC CONDUCTANCE, WATER, UNFILTERED, MICROSIEMENS PER CENTIMETER AT 25 DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 100 91 96 123 113 116 21,800 154 4,350 21,500 1,450 9,790 2 103 95 98 120 114 116 20,200 172 5,060 19,200 311 6,530 3 108 96 101 122 111 113 20,100 179 4,820 15,600 192 3,790 4 111 96 102 116 102 108 21,800 253 5,640 3,740 179 452 5 119 100 110 113 101 104 27,800 210 6,760 8,510 172 885

6 118 105 110 107 100 102 28,200 269 7,500 22,500 169 4,110 7 116 103 108 109 101 103 18,000 178 4,690 22,000 171 4,790 8 111 96 102 118 103 107 22,700 185 6,520 29,000 220 8,310 9 119 108 114 122 108 110 16,700 181 3,820 25,400 238 7,990

10 119 104 109 122 109 114 4,020 174 520 19,000 174 3,800

11 108 75 92 127 118 120 203 162 179 31,700 212 9,140 12 92 75 84 130 120 123 192 143 158 29,900 919 12,000 13 94 78 87 128 119 123 24,000 139 2,980 26,400 230 7,860 14 91 82 86 130 120 123 19,900 140 2,410 2,190 171 378 15 97 72 91 136 124 128 21,100 143 2,990 243 170 186

16 87 67 81 143 130 133 25,700 156 3,810 222 148 161 17 85 68 77 11,000 133 630 29,300 168 5,550 1,450 142 216 18 100 85 94 16,700 135 1,220 34,400 203 7,790 453 130 166 19 109 97 104 20,400 139 1,730 26,800 189 6,280 1,730 132 209 20 116 109 113 13,300 143 821 29,700 196 5,290 26,300 138 3,350

21 118 109 112 21,300 141 1,260 30,600 255 7,830 28,100 147 4,920 22 132 110 116 25,700 143 1,460 28,300 221 7,600 17,100 154 2,940 23 165 119 124 27,500 145 2,090 27,300 196 5,650 29,400 150 5,420 24 203 122 135 13,600 141 684 32,200 248 9,630 11,700 157 3,230 25 6,570 130 266 185 147 155 24,300 280 8,360 20,800 157 3,200

26 491 136 161 158 130 144 25,300 1,160 10,400 24,600 806 7,560 27 240 135 151 223 130 140 27,900 1,640 10,700 27,900 1,140 9,070 28 206 134 141 2,870 133 260 27,800 541 8,650 26,300 1,700 11,200 29 146 134 137 15,100 140 1,580 31,900 1,460 12,200 26,800 2,600 12,300 30 141 113 129 15,600 142 2,000 27,900 4,320 14,300 27,500 2,040 12,600 31 --- --- --- 19,600 147 3,180 27,900 2,530 11,600 --- --- ---

Month 6,570 67 114 27,500 100 619 34,400 139 6,260 31,700 130 5,220

Max Min Mean

Year 43,700 63 2,350

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

— 32 —

SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

October November December January

1 5 0 0 0 0 0 19 0 7 0 0 0 2 15 0 3 0 0 0 17 1 8 3 0 0 3 11 0 3 0 0 0 13 0 5 0 0 0 4 6 0 0 0 0 0 16 0 7 2 0 0 5 11 0 2 0 0 0 13 0 4 0 0 0

6 11 0 3 2 0 0 15 0 3 14 0 2 7 17 0 3 23 0 5 14 0 5 7 0 0 8 17 1 7 5 0 1 10 0 2 10 0 1 9 17 0 7 11 0 2 7 0 0 9 0 0

10 16 1 7 6 0 0 21 0 4 0 0 0

11 7 0 1 5 0 0 0 0 0 23 0 4 12 6 0 1 13 0 1 1 0 0 17 0 3 13 14 0 3 14 0 1 11 0 0 6 0 0 14 4 0 0 23 0 3 0 0 0 0 0 0 15 14 0 2 23 0 3 8 0 0 0 0 0

16 5 0 0 13 0 1 22 0 3 0 0 0 17 10 0 0 7 0 0 12 0 3 0 0 0 18 13 0 0 11 0 1 9 0 1 0 0 0 19 10 0 0 13 0 3 0 0 0 0 0 0 20 4 0 0 10 0 3 13 0 2 0 0 0

21 0 0 0 10 0 3 0 0 0 8 0 0 22 0 0 0 11 0 2 0 0 0 5 0 0 23 0 0 0 15 0 5 0 0 0 9 0 0 24 0 0 0 16 0 5 0 0 0 1 0 0 25 0 0 0 7 0 1 0 0 0 12 0 2

26 5 0 0 6 0 1 0 0 0 10 0 2 27 14 0 2 18 0 4 24 0 6 5 0 0 28 18 0 3 17 0 4 0 0 0 10 0 3 29 28 0 14 10 0 2 0 0 0 10 0 2 30 25 0 4 5 0 0 0 0 0 9 0 2 31 0 0 0 --- --- --- 0 0 0 5 0 0

Month 28 0 2 23 0 2 24 0 2 23 0 0

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Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

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SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

February March April May

1 0 0 0 0 0 0 4 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 2 0 0 4 0 0 0 0 0 0 0 0 0 5 0 0 5 0 0 0 1 0 0 0 0 0 3 0 0

6 0 0 0 13 0 3 0 0 0 7 0 0 7 0 0 0 13 0 3 0 0 0 4 0 0 8 13 0 2 19 0 3 0 0 0 6 0 0 9 2 0 0 17 0 2 0 0 0 9 0 0

10 11 0 2 0 0 0 0 0 0 9 0 0

11 8 0 2 0 0 0 0 0 0 6 0 0 12 1 0 0 0 0 0 0 0 0 2 0 0 13 0 0 0 0 0 0 0 0 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 0 0 15 0 0 0 0 0 0 0 0 0 0 0 0

16 0 0 0 0 0 0 0 0 0 1 0 0 17 5 0 0 0 0 0 0 0 0 3 0 0 18 0 0 0 0 0 0 0 0 0 7 0 1 19 12 0 2 0 0 0 0 0 0 10 0 2 20 5 0 0 0 0 0 0 0 0 13 0 3

21 1 0 0 0 0 0 0 0 0 13 0 3 22 19 0 5 0 0 0 0 0 0 17 0 2 23 9 0 2 0 0 0 0 0 0 7 0 0 24 12 0 2 4 0 0 0 0 0 0 0 0 25 13 0 2 12 0 1 0 0 0 0 0 0

26 5 0 0 7 0 0 0 0 0 0 0 0 27 20 0 3 0 0 0 0 0 0 0 0 0 28 0 0 0 0 0 0 0 0 0 0 0 0 29 --- --- --- 4 0 0 0 0 0 0 0 0 30 --- --- --- 0 0 0 0 0 0 0 0 0 31 --- --- --- 0 0 0 --- --- --- 0 0 0

Month 20 0 0 19 0 0 4 0 0 17 0 0

Page 34: Water-Data Report 2013 01194750 CONNECTICUT RIVER AT …01194750 CONNECTICUT RIVER AT ESSEX, CT. Lower Connecticut Basin Lower Connecticut Subbasin . LOCATION.--Lat 41°21'05.34",

Water-Data Report 2013

01194750 CONNECTICUT RIVER AT ESSEX, CT—Continued

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SALINITY, WATER, UNFILTERED, PRACTICAL SALINITY UNITS AT 25 DEGREES CELSIUS (BOTTOM) WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013

Day Max Min Mean Max Min Mean Max Min Mean Max Min Mean

June July August September

1 0 0 0 0 0 0 13 0 2 13 0 6 2 0 0 0 0 0 0 12 0 3 11 0 4 3 0 0 0 0 0 0 12 0 3 9 0 2 4 0 0 0 0 0 0 13 0 3 2 0 0 5 0 0 0 0 0 0 17 0 4 5 0 0

6 0 0 0 0 0 0 17 0 4 14 0 2 7 0 0 0 0 0 0 11 0 3 13 0 3 8 0 0 0 0 0 0 14 0 4 18 0 5 9 0 0 0 0 0 0 10 0 2 15 0 5

10 0 0 0 0 0 0 2 0 0 11 0 2

11 0 0 0 0 0 0 0 0 0 20 0 5 12 0 0 0 0 0 0 0 0 0 18 0 7 13 0 0 0 0 0 0 15 0 2 16 0 4 14 0 0 0 0 0 0 12 0 1 1 0 0 15 0 0 0 0 0 0 13 0 2 0 0 0

16 0 0 0 0 0 0 16 0 2 0 0 0 17 0 0 0 6 0 0 18 0 3 0 0 0 18 0 0 0 10 0 0 22 0 5 0 0 0 19 0 0 0 12 0 0 16 0 4 0 0 0 20 0 0 0 8 0 0 18 0 3 16 0 2

21 0 0 0 13 0 0 19 0 5 17 0 3 22 0 0 0 16 0 0 17 0 4 10 0 2 23 0 0 0 17 0 1 17 0 3 18 0 3 24 0 0 0 8 0 0 20 0 6 7 0 2 25 4 0 0 0 0 0 15 0 5 12 0 2

26 0 0 0 0 0 0 15 0 6 15 0 4 27 0 0 0 0 0 0 17 0 6 17 0 5 28 0 0 0 1 0 0 17 0 5 16 0 6 29 0 0 0 9 0 0 20 0 7 16 1 7 30 0 0 0 9 0 1 17 2 8 17 1 7 31 --- --- --- 12 0 2 17 1 7 --- --- ---

Month 4 0 0 17 0 0 22 0 4 20 0 3

Max Min Mean

Year 28 0 1