march 1st, 2011 - colorado state university
TRANSCRIPT
March 1st, 2011
-Assessment of current water conditions
- Precipitation Forecast
- Recommendations for Drought Monitor
Upper Colorado Normal PrecipitationUpper Colorado River Basin Normal Monthly Precipitation
0
1
2
3
4
5
6
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov DecMonth
Prec
ipita
tion
(in)
KREMMLINGGRAND LAKE 6 SSWBERTHOUD SUMMIT
6 Month SPI 9/1/10 – 2/28/11
Upper Colorado River Basin Snow
Green River Basin above Flaming Gorge
Snowpack % of average to date: 108%Percent of average peak: 87%
Duchesne River Basin
Snowpack % of average to date: 150%Percent of average peak: 124%
Upper Colorado above Kremmling
Snowpack % of average to date: 128%Percent of average peak: 98%
San Juan Basin
Snowpack % of average to date: 90%Percent of average peak: 71%
7-day average discharge compared to historical discharge for the day of the year (February 27th)
Upper Colorado River Basin- Comparison of 7-day Average DischargeFebruary 26, 2002-2011
Discharge Category
Perc
enta
ge o
f str
eam
gage
s in
dis
char
ge c
ateg
ory
Colorado River near CO-UT State Line59th Percentile107% of Normal
Green River at Green River, UT61st Percentile114% of Normal
San Juan River near Bluff, UT34th Percentile79% of Normal
108%
125%95%
104%
119%
99%
109%
73%
Reservoir Level Percents of Average – 2/27/2011
Flaming Gorge
Lake GranbyGreen Mt.
Lake Dillon
Blue Mesa
McPhee
NavajoLake Powell
98%
112%94%
94%
98%
108%
109%
96%
Reservoir Level Percents of Last Year – 2/27/2011
Reservoir Level Changes Month-to-Date – 2/27/2011
Temperature Departure from Normal02/01/2011 – 02/28/2011
Soil Moisture Change from Feb 20th, 2011
20 February 2011 27 February 2011
5 Day QPF 1-6 March 2011
Proposed D2 expansion based on 6-month SPI and WY % of averages
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