smith branch monitoring sites - city of columbia water€¦ · monitoring data summary for january...
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Smith Branch Monitoring Sites Monitoring Data Summary for
January 4th, 2018 – February 14th, 2018 Data Gaps
• During this monitoring period, the turbidity sensor at the SMIA station became fouled and the periods of data when the sensor was fouled were removed. Turbidity at the SMIB station became fouled from January 20th -23rd and that period of data was also removed.
• At the SMIB station, the specific conductivity sensor was unsubmerged for several intervals across the deployment period and that data was removed from the dataset.
SCDHEC Standards
• The SMIA and SMIB stations did not record any pH readings outside of the acceptable SCDHEC range of 6 to 8.5.
• The SMIA and SMIB stations recorded average DO concentrations of 10.8 mg/L and 10.0 mg/L, respectively, which are well above the SCDHEC daily average standard of 5 mg/L.
• The minimum DO concentrations were 8.2 mg/L and 5.2 mg/L at the SMIA and SMIB stations, respectively, which are both above the SCDHEC minimum level of 4 mg/L.
Storm Events
• Both SMIA rain gauge recorded five storm events resulting in 4.1 inches of precipitation and the SMIB rain gauge recorded six storm events resulting in 4.0 inches of precipitation in this monitoring period.
• The Smith Branch monitoring stations both recorded typical water quality responses to the storm events observed during this monitoring period.
• The maximum antecedent dry time since the last significant precipitation event (at least 0.1 inch) was approximately 18.7 days prior to the January 11th storm event at SMIA and 19.5 days prior to the January 12th storm event at SMIB.
Potential Illicit Discharges and Abnormal Events
• Several elevated specific conductivity levels were observed at SMIA on: January 5th- 9th, 12th, 17th, 19th-20th, and 23rd-24th.
• Several elevated specific conductivity levels were observed at SMIB on: January 7th-9th, 12th, 17th-18th, 20th-21st, 30th, and February 1st.
• Abnormal rapid fluctuations in stage were observed at both Smith Branch stations from January 30th to February 4th, between two storm events. Water quality parameters responded with the same trend as the change in stage, indicating that the abnormal event occurred in the watershed. Due to the scale of the monthly periodic reports, below, a screenshot of the SMIA stage data and PT data is included on the next page.
Flow Measurements
• No flow measurements were taken in this watershed during this monitoring period.
The selected image above shows the abnormal stage fluctuations in the Smith Branch watershed. The blue graph (top) is the 15-minute water stage from the multi-parameter data sonde and the orange graph (bottom) is one-minute water stage data.
Continuous Water Quality
Monitoring Periodic Report
Smith Branch A (January 4, 2018 -- February 14, 2018)
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN
OBSERVED
MEAN
OBSERVED
STANDARD
DEVIATION
STREAM NAME: STAGE (FT): 1.9 4.2 1.9 2.0 0.2
LOCATION:
ADDRESS:
COORDINATES:
TMDL/IMPAIRMENT:
NEIGHBORING
LANDUSE:
SPATIAL LOCATION:
MAX. DAILY RAINFALL: 1.5 inches
TOTAL RAINFALL
(FOR PERIOD):4.0 inches
34.027289,-81.04265
Fecal Coliform
Residential and commercial
Most upstream site
PARAMETER
Smith Branch
Earlewood Park
DESCRIPTION
1111 Parkside Dr
Columbia, SC 29201
CONTINUOUS
WATER QUALITY
PARAMETERS:
SUMMARY STATISTICS
TEMPERATURE (°F): 36 63 49 49 6
TURBIDITY (NTU): 4 549
pH: 6.1 7.1
40
1.4
0.2
0.060
25 37
6.8 6.7
TOTAL NO. STORMS
OVER 0.1 INCH:6 0.165 0.173
10.0 10.0DISSOLVED
OXYGEN (mg/L):5.2 12.8
SPECIFIC
CONDUCTIVITY
(mS/cm):
0.033 0.469
3579
1113
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
mg/
L
Dissolved Oxygen 4 mg/L (SCDHEC Low Standard)
0
150
300
450
600
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
NTU
Turbidity
0.00
0.25
0.50
0.75
1.001
3
5
7
9
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
Rai
nfa
ll, in
Stag
e, f
t
Stage & Rainfall
30
40
50
60
70
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
°F
Water Temp
6.06.26.46.66.87.07.2
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
pH
pH
0.00.10.20.30.40.5
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
mS/
cm
Specific Conductivity
SCDHEC in-stream standard: Daily average not less than 5 mg/L with a low of 4 mg/L
Note: Data gaps appear when the sonde is removed for calibration or when the flow depth is below the sensors
REPORT GENERATED ON 2/22/2018
Continuous Water Quality
Monitoring Periodic Report
Smith Branch A (January 4, 2018 -- February 14, 2018)
Explanation of Statistics:
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN OBSERVED
MEAN OBSERVED
STANDARD
DEVIATION
Grab Sample Data:
Time Result Time Result Time Result Time Result
Escherichia coli
(MPN/100mL)
Total Suspended
Solids (mg/L)
Total Phosphorus
(mg/L)
Total Nitrogen
(mg/L)Note:
The minimum of the values recorded by the datasonde in 15 minute intervals.
The maximum of the values recorded by the datasonde in 15 minute intervals.
The median of all the values recorded by the datasonde in 15 minute intervals.
The average of all the values recorded by the datasonde in 15 minute intervals.
The standard deviation of all the values recorded by the datasonde in 15 minute intervals.
Sample 4Sample 3Sample 1 Sample 2Analyte
(units)
REPORT GENERATED ON 2/22/2018
Continuous Water Quality
Monitoring Periodic Report
Smith Branch B (January 4, 2018 -- February 14, 2018)
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN
OBSERVED
MEAN
OBSERVED
STANDARD
DEVIATION
STREAM NAME: STAGE (FT): 0.2 3.1 0.2 0.3 0.3
LOCATION:
NEAREST ADDRESS:
COORDINATES:
TMDL/IMPAIRMENT:
NEIGHBORING
LANDUSE:
SPATIAL LOCATION:
MAX. DAILY RAINFALL: 1.6 inches
TOTAL RAINFALL (FOR
PERIOD):4.1 inches
34.037933,-81.0591
Fecal Coliform
Residential and commercial
Most Downstream Site
PARAMETER
Smith Branch
DESCRIPTION
Off Mountain Drive
3950 Clement Rd
Columbia, SC 29203
33 63 48 48 7
0.1
TURBIDITY (NTU): 5 301 17 26 29
pH: 6.3 7.2 7.0 7.0
CONTINUOUS
WATER QUALITY
PARAMETERS:
SUMMARY STATISTICS
TEMPERATURE (°F):
TOTAL NO. STORMS
OVER 0.1 INCH:5
1.2
SPECIFIC
CONDUCTIVITY
(mS/cm):
0.033 0.361 0.143 0.144 0.045
DISSOLVED OXYGEN
(mg/L):8.2 13.6 10.8 10.8
3579
111315
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
mg/
L
Dissolved Oxygen 4 mg/L (SCDHEC Low Standard)
050
100150200250300350
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
NTU
Turbidity
0.00
0.25
0.50
0.75
1.000
2
4
6
8
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
Rai
nfa
ll, in
Stag
e, f
t
Stage & Rainfall
30
40
50
60
70
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
°F
Water Temp
6.26.46.66.87.07.27.4
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
pH
pH
0.0
0.1
0.2
0.3
0.4
1/4 1/6 1/8 1/10 1/12 1/14 1/16 1/18 1/20 1/22 1/24 1/26 1/28 1/30 2/1 2/3 2/5 2/7 2/9 2/11 2/13 2/15
mS/
cm
Specific Conductivity
SCDHEC in-stream standard: Daily average not less than 5 mg/L with a low of 4 mg/L
Note: Data gaps appear when the sonde is removed for calibration or when the flow depth is below the sensors
REPORT GENERATED ON 2/22/2018
Continuous Water Quality
Monitoring Periodic Report
Smith Branch B (January 4, 2018 -- February 14, 2018)
Explanation of Statistics:
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN OBSERVED
MEAN OBSERVED
STANDARD
DEVIATION
Sampled Data:
Time Result Time Result Time Result Time Result
Escherichia coli
(MPN/100mL)
Total Suspended
Solids (mg/L)
Total Phosphorus
(mg/L)
Total Nitrogen
(mg/L)Note:
The minimum of the values recorded by the datasonde in 15 minute intervals.
The maximum of the values recorded by the datasonde in 15 minute intervals.
The average of all the values recorded by the datasonde in 15 minute intervals.
The median of all the values recorded by the datasonde in 15 minute intervals.
The standard deviation of all the values recorded by the datasonde in 15 minute intervals.
Sample 4Sample 3Sample 1 Sample 2Analyte
(units)
REPORT GENERATED ON 2/22/2018