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 MONDAY: AUGUST 4 , 2008
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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 35.3 30.5 116
COTTONWOOD CREEK 7670 .0 .0 100 -M 39.3 *
GRAND TARGHEE 9260 .0 -M * 49.1 -M *
GRANITE CREEK 6770 .0 .0 100 32.3 28.1 115
GRASSY LAKE 7265 .0 .0 100 57.6 49.9 115
GROS VENTRE SUMMIT 8750 .0 .0 100 20.0 21.5 93
GUNSIGHT PASS 9820 .3 -M * 21.4 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 49.0 49.8 98
PHILLIPS BENCH 8200 .0 .0 100 45.4 40.4 112
SALT RIVER SUMMIT 7760 -M .0 * -M 26.7 *
SNAKE RIVER STATION 6920 .0 .0 100 36.8 32.3 114
SPRING CREEK DIVIDE 9000 -M .0 * 32.1 36.1 89
THUMB DIVIDE 7980 .1 .0 29.8 28.1 106
TOGWOTEE PASS 9580 .0 .0 100 41.6 37.1 112
TWO OCEAN PLATEAU 9240 .1 .0 45.1 41.4 109
WILLOW CREEK 8380 .0 .0 100 53.6 47.3 113
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Basin wide percent of average * 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100 34.9 32.1 109
BLACK BEAR 8170 .0 .0 100 57.9 55.6 104
CANYON 7870 .0 .0 100 29.0 24.5 118
FISHER CREEK 9100 .1 .0 53.4 53.4 100
MADISON PLATEAU 7750 .2 .0 45.1 38.6 117
NORTHEAST ENTRANCE 7350 .1 .0 22.4 22.5 100
PARKER PEAK 9400 .1 .0 40.8 28.0 146
SYLVAN LAKE 8420 .0 .0 100 40.8 34.2 119
THUMB DIVIDE 7980 .1 .0 29.8 28.1 106
TWO OCEAN PLATEAU 9240 .1 .0 45.1 41.4 109
WHISKEY CREEK 6800 .0 .0 100 -M 31.6 *
WHITE MILL 8700 .1 .0 39.3 41.1 96
WOLVERINE 7650 .1 .0 23.0 22.5 102
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Basin wide percent of average * 109
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 26.9 26.5 102
COLD SPRINGS 9630 .0 .0 100 18.5 20.9 89
DEER PARK 9700 .0 .0 100 31.4 35.0 90
HOBBS PARK 10100 .0 .0 100 25.8 25.3 102
LITTLE WARM 9370 .0 .0 100 23.4 24.1 97
SOUTH PASS 9040 .0 .0 100 27.8 29.4 95
ST. LAWRENCE ALT 8620 .0 .0 100 17.3 19.0 91
TOGWOTEE PASS 9580 .0 .0 100 41.6 37.1 112
TOWNSEND CREEK 8700 .0 .0 100 22.6 22.5 100
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Basin wide percent of average * 98
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100 29.4 30.5 96
BEAR TRAP MEADOW 8200 .0 .0 100 22.7 18.6 122
BLACKWATER 9780 .0 .0 100 38.6 34.8 111
BONE SPRINGS DIV 9350 .0 .0 100 30.7 28.0 110
EVENING STAR 9200 .0 .0 100 51.4 40.6 127
GRAVE SPRINGS 8550 .0 .0 100 19.8 20.7 96
KIRWIN 9550 .0 .0 100 24.2 23.2 104
MARQUETTE 8760 .0 .0 100 23.3 23.5 99
MIDDLE POWDER 7760 .1 .0 20.4 23.5 87
OWL CREEK 8975 .1 .0 14.8 15.3 97
POWDER RIVER PASS 9480 .0 .0 100 28.2 24.4 116
SHELL CREEK 9580 .0 .0 100 28.4 26.0 109
SYLVAN LAKE 8420 .0 .0 100 40.8 34.2 119
SYLVAN ROAD 7120 .0 .0 100 31.6 27.4 115
TIMBER CREEK 7950 .1 .0 20.5 18.6 110
YOUNTS PEAK 8350 .0 .0 100 26.2 27.2 96
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Basin wide percent of average * 108
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100 38.6 34.8 111
EVENING STAR 9200 .0 .0 100 51.4 40.6 127
KIRWIN 9550 .0 .0 100 24.2 23.2 104
MARQUETTE 8760 .0 .0 100 23.3 23.5 99
SYLVAN LAKE 8420 .0 .0 100 40.8 34.2 119
SYLVAN ROAD 7120 .0 .0 100 31.6 27.4 115
YOUNTS PEAK 8350 .0 .0 100 26.2 27.2 96
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Basin wide percent of average * 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 22.7 18.6 122
BIG GOOSE 7990 .0 .0 100 24.4 19.8 123
BONE SPRINGS DIV 9350 .0 .0 100 30.7 28.0 110
BURGESS JUNCTION 7880 .0 .0 100 27.9 23.6 118
CLOUD PEAK RESERVOIR 9860 .0 .0 100 33.3 27.4 122
DOME LAKE 8880 .0 .0 100 29.3 25.4 115
GRAVE SPRINGS 8550 .0 .0 100 19.8 20.7 96
HANSEN SAWMILL 8360 .0 .0 100 25.0 19.2 130
MIDDLE POWDER 7760 .1 .0 20.4 23.5 87
POWDER RIVER PASS 9480 .0 .0 100 28.2 24.4 116
SUCKER CREEK 8880 .0 .0 100 32.3 26.7 121
TIE CREEK 6870 .0 .0 100 25.0 21.7 115
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Basin wide percent of average * 114
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 26.8 24.1 111
COLE CANYON 5910 .0 .0 100 26.0 19.5 133
NORTH RAPID CREEK 6130 .0 .0 100 32.7 22.5 145
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Basin wide percent of average * 129
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100 37.9 35.3 107
DIVIDE PEAK 8880 .0 .0 100 32.1 30.5 105
ELK RIVER 8700 .2 .0 31.0 29.3 106
JOE WRIGHT 10120 .1 .0 41.5 40.0 104
NORTH FRENCH CREEK 10130 .0 .0 100 41.7 39.0 107
OLD BATTLE 10000 .0 .0 100 -M 47.9 *
SAGE CREEK BASIN 7850 .0 .0 100 .0 17.7 0
SOUTH BRUSH CREEK 8440 .0 .0 100 -M 27.6 *
TOWER 10500 -M .0 * 54.4 54.3 100
WEBBER SPRINGS 9250 .0 .0 100 -M 38.1 *
WILLOW CREEK PASS 9540 .4 .0 24.5 23.1 106
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Basin wide percent of average * 98
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100 32.0 35.3 91
CASPER MTN. 7900 .0 .0 100 30.7 27.7 111
DEADMAN HILL 10220 .3 .0 28.8 28.2 102
DEER PARK 9700 .0 .0 100 31.4 35.0 90
LAPRELE CREEK 8375 .0 .0 100 -M 24.2 *
RENO HILL 8400 .0 .0 100 33.2 28.4 117
ROACH 9700 .0 .0 100 32.4 30.3 107
SAND LAKE 10050 .0 .0 100 43.5 38.6 113
SOUTH PASS 9040 .0 .0 100 27.8 29.4 95
WINDY PEAK 7900 .4 .0 19.9 21.1 94
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Basin wide percent of average * 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 -M 23.2 *
DIVIDE PEAK 8880 .0 .0 100 32.1 30.5 105
OLD BATTLE 10000 .0 .0 100 -M 47.9 *
SANDSTONE RS 8150 -M .0 * -M 27.8 *
WHISKEY PARK 8950 .0 .0 100 46.8 41.7 112
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Basin wide percent of average * 109*
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 20.1 21.9 92
BLIND BULL SUM 8650 .0 .0 100 25.2 31.3 81
EAST RIM DIVIDE 7930 .0 .0 100 15.7 18.7 84
ELKHART PARK G.S. 9400 .1 .0 17.6 22.5 78
GROS VENTRE SUMMIT 8750 .0 .0 100 20.0 21.5 93
GUNSIGHT PASS 9820 .3 -M * 21.4 -M *
KENDALL R.S. 7740 .0 .0 100 18.6 21.4 87
LOOMIS PARK 8240 .0 .0 100 23.7 25.5 93
NEW FORK LAKE 8340 .2 .0 14.6 19.1 76
SNIDER BASIN 8060 .0 .0 100 19.6 22.6 87
SPRING CREEK DIVIDE 9000 -M .0 * 32.1 36.1 89
TRIPLE PEAK 8500 -M .0 * 39.3 35.4 111
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Basin wide percent of average * 89
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 15.7 19.6 80
HEWINTA 9519 .0 .0 100 27.4 24.1 114
HICKERSON PARK 9145 .0 .0 100 18.0 15.9 113
HOLE-IN-ROCK 9150 .0 .0 100 16.7 15.8 106
INDIAN CREEK 9425 .0 .0 100 31.2 35.3 88
KELLEY R.S. 8180 .1 .0 24.5 28.9 85
STEEL CREEK PARK 10200 -M .0 * 29.1 27.1 107
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Basin wide percent of average * 98
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100 23.6 27.5 86
HAYDEN FORK 9212 .0 .0 100 31.5 31.9 99
KELLEY R.S. 8180 .1 .0 24.5 28.9 85
LILY LAKE 9156 .0 .0 100 25.5 27.2 94
MONTE CRISTO 8960 .0 .0 100 33.5 36.8 91
SALT RIVER SUMMIT 7760 -M .0 * -M 26.7 *
TRIAL LAKE 9992 -M .0 * 32.4 37.3 87
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Basin wide percent of average * 90
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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.