Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of SATURDAY: JUNE 20 , 2009
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100 28.7 28.4 101
COTTONWOOD CREEK 7670 .0 .0 100 45.2 37.2 122
GRAND TARGHEE 9260 29.9 -M * 49.2 -M *
GRANITE CREEK 6770 .1 .0 30.0 26.2 115
GRASSY LAKE 7265 .0 .0 100 47.6 47.1 101
GROS VENTRE SUMMIT 8750 .0 .0 100 22.9 19.0 121
GUNSIGHT PASS 9820 2.2 -M * 25.8 -M *
LEWIS LAKE DIVIDE 7850 .3 2.7 11 46.2 47.2 98
PHILLIPS BENCH 8200 .0 2.0 0 40.8 38.2 107
SALT RIVER SUMMIT 7760 .0 .0 100 26.4 25.1 105
SNAKE RIVER STATION 6920 .0 .0 100 32.5 29.9 109
SPRING CREEK DIVIDE 9000 .1 1.6 6 38.0 34.2 111
THUMB DIVIDE 7980 .1 .0 31.1 26.1 119
TOGWOTEE PASS 9580 15.2 11.4 133 42.4 34.2 124
TWO OCEAN PLATEAU 9240 24.1 14.7 164 43.0 38.2 113
WILLOW CREEK 8380 .0 .0 100 57.0 44.4 128
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Basin wide percent of average 123 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.1 8.8 137 31.1 28.8 108
BLACK BEAR 8170 7.2 10.5 69 49.4 52.5 94
CANYON 7870 .0 .1 0 24.9 21.9 114
FISHER CREEK 9100 -M 17.6 * 49.0 49.1 100
MADISON PLATEAU 7750 .0 .3 0 35.1 36.0 98
NORTHEAST ENTRANCE 7350 .1 .0 21.2 19.2 110
PARKER PEAK 9400 .3 8.0 4 28.4 25.1 113
SYLVAN LAKE 8420 .1 2.8 4 34.8 31.1 112
THUMB DIVIDE 7980 .1 .0 31.1 26.1 119
TWO OCEAN PLATEAU 9240 24.1 14.7 164 43.0 38.2 113
WHISKEY CREEK 6800 .1 .0 29.2 29.1 100
WHITE MILL 8700 3.9 7.8 50 35.1 37.3 94
WOLVERINE 7650 .0 .0 100 20.4 19.7 104
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Basin wide percent of average 90 104
WIND RIVER
BURROUGHS CREEK 8750 .0 .2 0 28.3 24.1 117
COLD SPRINGS 9630 .0 .0 100 19.4 18.7 104
DEER PARK 9700 .0 3.1 0 30.4 32.7 93
HOBBS PARK 10100 .0 3.5 0 25.6 22.6 113
LITTLE WARM 9370 .0 .0 100 24.9 21.5 116
SOUTH PASS 9040 .2 1.5 13 26.1 27.4 95
ST. LAWRENCE ALT 8620 .1 .0 18.3 16.8 109
TOGWOTEE PASS 9580 15.2 11.4 133 42.4 34.2 124
TOWNSEND CREEK 8700 .0 .1 0 22.1 20.3 109
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Basin wide percent of average 78 109
BIGHORN BASIN
BALD MTN. 9380 1.8 5.8 31 25.0 27.3 92
BEAR TRAP MEADOW 8200 .0 .0 100 16.4 16.1 102
BLACKWATER 9780 16.7 14.6 114 35.8 31.2 115
BONE SPRINGS DIV 9350 .0 1.5 0 24.0 24.5 98
EVENING STAR 9200 9.7 13.8 70 45.2 36.7 123
GRAVE SPRINGS 8550 .0 .0 100 14.9 17.8 84
KIRWIN 9550 .0 .6 0 24.7 19.5 127
MARQUETTE 8760 .0 .6 0 16.9 20.2 84
MIDDLE POWDER 7760 .0 .0 100 17.1 20.9 82
OWL CREEK 8975 .0 .0 100 15.8 12.8 123
POWDER RIVER PASS 9480 .0 .0 100 24.4 21.6 113
SHELL CREEK 9580 1.0 2.4 42 25.6 22.7 113
SYLVAN LAKE 8420 .1 2.8 4 34.8 31.1 112
SYLVAN ROAD 7120 .1 .0 29.3 24.9 118
TIMBER CREEK 7950 .1 .0 16.6 16.0 104
YOUNTS PEAK 8350 .0 .2 0 25.0 23.7 105
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Basin wide percent of average 69 107
SHOSHONE RIVER
BLACKWATER 9780 16.7 14.6 114 35.8 31.2 115
EVENING STAR 9200 9.7 13.8 70 45.2 36.7 123
KIRWIN 9550 .0 .6 0 24.7 19.5 127
MARQUETTE 8760 .0 .6 0 16.9 20.2 84
SYLVAN LAKE 8420 .1 2.8 4 34.8 31.1 112
SYLVAN ROAD 7120 .1 .0 29.3 24.9 118
YOUNTS PEAK 8350 .0 .2 0 25.0 23.7 105
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Basin wide percent of average 81 113
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 16.4 16.1 102
BIG GOOSE 7990 .0 .0 100 19.7 17.6 112
BONE SPRINGS DIV 9350 .0 1.5 0 24.0 24.5 98
BURGESS JUNCTION 7880 .0 .0 100 19.8 20.3 98
CLOUD PEAK RESERVOIR 9860 .0 1.6 0 26.3 23.9 110
DOME LAKE 8880 .0 .2 0 24.1 22.4 108
GRAVE SPRINGS 8550 .0 .0 100 14.9 17.8 84
HANSEN SAWMILL 8360 .0 .0 100 16.8 16.2 104
MIDDLE POWDER 7760 .0 .0 100 17.1 20.9 82
POWDER RIVER PASS 9480 .0 .0 100 24.4 21.6 113
SUCKER CREEK 8880 .0 .1 0 26.5 23.6 112
TIE CREEK 6870 .0 .0 100 22.9 19.3 119
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Basin wide percent of average 0 104
BELLE FOURCHE
BLIND PARK 6890 .1 .0 22.2 20.0 111
COLE CANYON 5910 .0 .0 100 19.4 15.2 128
NORTH RAPID CREEK 6130 .1 .0 18.5 16.5 112
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Basin wide percent of average * 116
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 36.1 33.2 109
DIVIDE PEAK 8880 .0 .0 100 37.7 28.6 132
ELK RIVER 8700 -M .0 * 30.7 27.1 113
JOE WRIGHT 10120 .1 5.2 2 39.5 36.5 108
NORTH FRENCH CREEK 10130 -M 9.6 * -M 35.9 *
OLD BATTLE 10000 12.8 9.7 132 52.5 45.6 115
SAGE CREEK BASIN 7850 .0 .0 100 22.7 16.6 137
SOUTH BRUSH CREEK 8440 .0 .0 100 25.6 25.0 102
TOWER 10500 13.2 21.7 61 55.8 51.6 108
WEBBER SPRINGS 9250 .0 .7 0 40.1 35.9 112
WILLOW CREEK PASS 9540 .0 .1 0 20.6 20.4 101
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Basin wide percent of average 70 113
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 2.6 0 32.2 32.5 99
CASPER MTN. 7900 .0 .7 0 23.9 25.6 93
DEADMAN HILL 10220 -M 2.4 * 25.7 25.9 99
DEER PARK 9700 .0 3.1 0 30.4 32.7 93
LAPRELE CREEK 8375 .0 .0 100 20.7 21.5 96
RENO HILL 8400 .0 .4 0 26.0 26.1 100
ROACH 9700 .1 .9 11 28.6 27.8 103
SAND LAKE 10050 10.0 9.9 101 42.7 36.0 119
SOUTH PASS 9040 .2 1.5 13 26.1 27.4 95
WINDY PEAK 7900 -M .0 * 18.7 18.5 101
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Basin wide percent of average 54 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 27.0 21.8 124
DIVIDE PEAK 8880 .0 .0 100 37.7 28.6 132
OLD BATTLE 10000 12.8 9.7 132 52.5 45.6 115
SANDSTONE RS 8150 -M .0 * 29.6 25.9 114
WHISKEY PARK 8950 -M 1.9 * 45.7 39.3 116
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Basin wide percent of average 132 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 24.1 19.9 121
BLIND BULL SUM 8650 3.3 6.4 52 30.4 29.3 104
EAST RIM DIVIDE 7930 .0 .0 100 19.8 17.1 116
ELKHART PARK G.S. 9400 .0 .0 100 24.9 20.4 122
GROS VENTRE SUMMIT 8750 .0 .0 100 22.9 19.0 121
GUNSIGHT PASS 9820 2.2 -M * 25.8 -M *
KENDALL R.S. 7740 .0 .0 100 21.7 19.7 110
LOOMIS PARK 8240 .1 .0 28.5 23.5 121
NEW FORK LAKE 8340 1.7 .0 19.6 17.1 115
SNIDER BASIN 8060 .0 .0 100 21.6 21.3 101
SPRING CREEK DIVIDE 9000 .1 1.6 6 38.0 34.2 111
TRIPLE PEAK 8500 .1 .0 38.4 33.3 115
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Basin wide percent of average 42 114
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 21.3 18.0 118
HEWINTA 9519 .0 .0 100 19.8 21.4 93
HICKERSON PARK 9145 .0 .0 100 17.1 13.6 126
HOLE-IN-ROCK 9150 .0 .0 100 15.2 13.3 114
INDIAN CREEK 9425 .0 2.8 0 32.2 33.7 96
KELLEY R.S. 8180 .0 .0 100 28.3 27.3 104
STEEL CREEK PARK 10200 .0 3.2 0 24.2 24.4 99
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Basin wide percent of average 0 104
UPPER BEAR RIVER
BUG LAKE 7950 .1 .0 25.6 26.2 98
HAYDEN FORK 9212 .0 .0 100 31.1 29.8 104
KELLEY R.S. 8180 .0 .0 100 28.3 27.3 104
LILY LAKE 9156 .0 .0 100 25.6 25.3 101
MONTE CRISTO 8960 .0 2.0 0 37.6 35.3 107
SALT RIVER SUMMIT 7760 .0 .0 100 26.4 25.1 105
TRIAL LAKE 9992 .2 4.4 5 34.8 34.8 100
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Basin wide percent of average 3 103
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.