June 8th, 2010

-Assessment of current water conditions

- Precipitation Forecast

- Recommendations for Drought Monitor

Snotel WYTD Precipitation as Percentage of Average

Upper Colorado Headwaters 87% of average

1 Week Change in Snotel WYTD Precipitation % Average

Snotel Percentile Rankings (at least 30 years of data)

Upper Colorado River Basin

Green River Basin above Flaming Gorge

Basin Snowpack: 91%

Peak snowpack: 64% of average peak

WYTD Precipitation percent of average: 82%

Indian Creek and Hams Fork

Duchesne River Basin

Basin snowpack: 51%Peak snowpack: 81% of average peak

WYTD Precipitation percent of average: 77%

Chepeta and Mosby Mtn.

Upper Colorado above Kremmling

Basin Snowpack: 8%Peak snowpack: 79% of average peak

WYTD Precipitation percent of average: 87%

Lake Irene and Phantom Valley

San Juan Basin

Basin Snowpack: 14%Peak snowpack: 97% of average peak

WYTD Precipitation percent of average: 88%

Beartown and Vallecito

Michael Lewis USGS

7-day average streamflow compared to historical streamflow for the day of the year (Upper Colorado)

Below normal 7-day average streamflow compared to historical streamflow for the day of the year (Upper Colorado)

June 7, 2010

June 8, 2010

Colorado River near Colorado-Utah State Line

Green River at Green River, Utah

San Juan River near Bluff, Utah

June 6Percentage of Streamgages per Percentile Class

7-day Average Streamflow

*2008: 06/11/08

*

0

20

40

60

80

100

120

140

160

Th

ous

and

AF

Green Mountain May Reservoir Storage

Max Capacity

1971-2000 Average

0

50

100

150

200

250

300

350

400

450

500

Th

ous

and

AF

Lake Granby May Reservoir Storage

Max Capacity

1971-2000 Average

0

50

100

150

200

250

300

1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010

Th

ous

and

AF

Lake Dillon May Reservoir Storage

Max Capacity

1971-2000 Average

0

100

200

300

400

500

600

700

800

900

1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010

Thou

sand

AF

Blue Mesa May Reservoir Storage

1971-2000 Average

Max Capacity

0

50

100

150

200

250

300

350

400

450

Th

ous

and

AF

McPhee May Reservoir Storage

Max Capacity

1971-2000 Average

0

500

1000

1500

2000

2500

3000

3500

4000

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

Th

ous

and

AF

Flaming Gorge May Reservoir Storage

Max Capacity

1971-2000 Average

May Temperature Departure from Normal5/1/2010 – 5/31/2010

Temperature Departure from Normal6/1/2010 – 6/7/2010

1-3 Day QPF 9-11 June

4-5 Day QPF 12-13 June

5 Day QPF 9-13 June

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