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 1 , 2011
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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 .3 .0 * 39.0 30.3 129
COTTONWOOD CREEK 7670 .0 .0 100* 55.2 39.1 141
GRAND TARGHEE 9260 .0 -M * 62.1 -M *
GRANITE CREEK 6770 .1 .0 * 38.6 28.0 138
GRASSY LAKE 7265 .0 .0 100* 64.5 49.7 130
GROS VENTRE SUMMIT 8750 .0 .0 100* 25.6 21.4 120
GUNSIGHT PASS 9820 -M -M * 31.5 -M *
LEWIS LAKE DIVIDE 7850 .2 .0 * 58.0 49.7 117
PHILLIPS BENCH 8200 -M .0 * 52.1 40.2 130
SALT RIVER SUMMIT 7760 .1 .0 * 31.8 26.6 120
SNAKE RIVER STATION 6920 .0 .0 100* 41.9 32.2 130
SPRING CREEK DIVIDE 9000 -M .0 * -M 36.0 *
THUMB DIVIDE 7980 .2 .0 * 34.8 28.0 124
TOGWOTEE PASS 9580 .0 .0 100* 49.4 36.8 134
TWO OCEAN PLATEAU 9240 .0 .0 100* 50.2 41.2 122
WILLOW CREEK 8380 .1 .0 * 64.0 47.1 136
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Basin wide percent of average * 129
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100* 40.7 31.9 128
BLACK BEAR 8170 .0 .0 100* 72.4 55.4 131
CANYON 7870 .0 .0 100* 29.8 24.4 122
FISHER CREEK 9100 .0 .0 100* 60.6 53.2 114
MADISON PLATEAU 7750 .0 .0 100* 51.8 38.5 135
NORTHEAST ENTRANCE 7350 .0 .0 100* 26.9 22.3 121
PARKER PEAK 9400 .0 .0 100* 45.5 27.8 164
SYLVAN LAKE 8420 .0 .0 100* 46.8 34.1 137
THUMB DIVIDE 7980 .2 .0 * 34.8 28.0 124
TWO OCEAN PLATEAU 9240 .0 .0 100* 50.2 41.2 122
WHISKEY CREEK 6800 .1 .0 * 40.5 31.5 129
WHITE MILL 8700 .0 .0 100* 44.0 40.9 108
WOLVERINE 7650 .0 .0 100* 25.3 22.3 113
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Basin wide percent of average * 126
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 30.8 26.3 117
CASTLE CREEK 8400 .1 -M * 16.0 -M *
COLD SPRINGS 9630 .1 .0 * 22.2 20.8 107
DEER PARK 9700 -M .0 * 37.1 34.8 107
HOBBS PARK 10100 -M .0 * 30.2 25.1 120
LITTLE WARM 9370 .0 .0 100* 26.5 24.0 110
SOUTH PASS 9040 .1 .0 * 26.9 29.3 92
ST. LAWRENCE ALT 8620 .1 .0 * 21.8 18.9 115
TOGWOTEE PASS 9580 .0 .0 100* 49.4 36.8 134
TOWNSEND CREEK 8700 .0 .0 100* 24.2 22.4 108
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Basin wide percent of average * 113
BIGHORN BASIN
BALD MTN. 9380 -M .0 * 38.7 30.4 127
BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 18.5 119
BLACKWATER 9780 -M .0 * 43.8 34.6 127
BONE SPRINGS DIV 9350 .0 .0 100* 34.5 27.8 124
EVENING STAR 9200 -M .0 * 56.7 40.4 140
GRAVE SPRINGS 8550 .1 .0 * 23.9 20.6 116
KIRWIN 9550 .0 .0 100* 25.7 23.0 112
MARQUETTE 8760 .1 -M * 21.4 23.3 92
MIDDLE POWDER 7760 .0 .0 100* 25.9 23.4 111
OWL CREEK 8975 .1 .0 * 16.6 15.2 109
POWDER RIVER PASS 9480 .0 .0 100* 33.1 24.2 137
SHELL CREEK 9580 .0 .0 100* 33.2 25.8 129
SYLVAN LAKE 8420 .0 .0 100* 46.8 34.1 137
SYLVAN ROAD 7120 .0 .0 100* 35.0 27.3 128
TIMBER CREEK 7950 .0 .0 100* 18.1 18.4 98
YOUNTS PEAK 8350 .0 .0 100* 28.6 27.0 106
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Basin wide percent of average * 122
SHOSHONE RIVER
BLACKWATER 9780 -M .0 * 43.8 34.6 127
EVENING STAR 9200 -M .0 * 56.7 40.4 140
KIRWIN 9550 .0 .0 100* 25.7 23.0 112
MARQUETTE 8760 .1 -M * 21.4 23.3 92
SYLVAN LAKE 8420 .0 .0 100* 46.8 34.1 137
SYLVAN ROAD 7120 .0 .0 100* 35.0 27.3 128
YOUNTS PEAK 8350 .0 .0 100* 28.6 27.0 106
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Basin wide percent of average * 123
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 18.5 119
BIG GOOSE 7990 .0 .0 100* 27.5 19.7 140
BONE SPRINGS DIV 9350 .0 .0 100* 34.5 27.8 124
BURGESS JUNCTION 7880 .0 .0 100* 28.9 23.5 123
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 34.4 27.2 126
DOME LAKE 8880 .0 .0 100* 30.7 25.2 122
GRAVE SPRINGS 8550 .1 .0 * 23.9 20.6 116
HANSEN SAWMILL 8360 .0 .0 100* 23.7 19.0 125
LITTLE GOOSE 8870 .0 -M * 31.1 -M *
MIDDLE POWDER 7760 .0 .0 100* 25.9 23.4 111
POWDER RIVER PASS 9480 .0 .0 100* 33.1 24.2 137
SOLDIER PARK 8720 -M -M * 23.6 -M *
SUCKER CREEK 8880 .0 .0 100* 34.7 26.6 130
TIE CREEK 6870 .0 .0 100* 28.7 21.5 133
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Basin wide percent of average * 126
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * 32.0 23.9 134
COLE CANYON 5910 .2 .0 * 30.6 19.2 159
NORTH RAPID CREEK 6130 .4 .0 * 30.6 22.2 138
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Basin wide percent of average * 143
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 61.8 -M *
CINNABAR PARK 9574 -M .0 * 50.1 30.1 166
COLUMBINE 9160 .0 .0 100* 52.0 35.2 148
DIVIDE PEAK 8880 .0 .0 100* 44.1 30.3 146
ELK RIVER 8700 .0 .0 100* 40.8 29.1 140
JOE WRIGHT 10120 .1 .0 * 60.3 39.8 152
NORTH FRENCH CREEK 10130 .0 .0 100* -M 38.9 *
OLD BATTLE 10000 .0 .0 100* 69.9 47.7 147
SAGE CREEK BASIN 7850 .0 .0 100* 28.2 17.6 160
SOUTH BRUSH CREEK 8440 .0 .0 100* 36.4 27.4 133
TOWER 10500 .0 .0 100* 80.0 54.1 148
WEBBER SPRINGS 9250 .0 .0 100* 53.3 37.9 141
WILLOW CREEK PASS 9540 .0 .0 100* 35.0 22.9 153
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Basin wide percent of average * 148
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 49.5 35.1 141
CASPER MTN. 7900 .0 .0 100* 27.7 27.6 100
DEADMAN HILL 10220 .0 .0 100* 37.5 28.0 134
DEER PARK 9700 -M .0 * 37.1 34.8 107
LAPRELE CREEK 8375 .0 .0 100* 25.1 24.0 105
RENO HILL 8400 .0 .0 100* 30.9 28.2 110
ROACH 9700 .0 .0 100* 39.3 30.1 131
SAND LAKE 10050 .0 .0 100* 57.2 38.4 149
SOUTH PASS 9040 .1 .0 * 26.9 29.3 92
WINDY PEAK 7900 .0 .0 100* 22.8 21.0 109
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Basin wide percent of average * 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * -M 23.2 *
DIVIDE PEAK 8880 .0 .0 100* 44.1 30.3 146
OLD BATTLE 10000 .0 .0 100* 69.9 47.7 147
SANDSTONE RS 8150 1.7 .0 * 41.5 27.6 150
WHISKEY PARK 8950 .0 .0 100* 64.1 41.6 154
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Basin wide percent of average * 149
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .0 * 26.7 21.8 122
BLIND BULL SUM 8650 .0 .0 100* 36.1 31.1 116
EAST RIM DIVIDE 7930 .3 .0 * 23.0 18.5 124
ELKHART PARK G.S. 9400 .0 .0 100* 23.3 22.4 104
GROS VENTRE SUMMIT 8750 .0 .0 100* 25.6 21.4 120
GUNSIGHT PASS 9820 -M -M * 31.5 -M *
KENDALL R.S. 7740 .1 .0 * 24.0 21.3 113
LOOMIS PARK 8240 .2 .0 * 33.2 25.3 131
NEW FORK LAKE 8340 .1 .0 * 18.7 18.9 99
POCKET CREEK 9360 .0 -M * 24.9 -M *
SNIDER BASIN 8060 .0 .0 100* 28.5 22.5 127
SPRING CREEK DIVIDE 9000 -M .0 * -M 36.0 *
TRIPLE PEAK 8500 .1 .0 * 50.4 35.2 143
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Basin wide percent of average * 121
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * 25.1 19.5 129
HEWINTA 9519 .0 .0 100* 32.5 23.9 136
HICKERSON PARK 9145 .0 .0 100* 22.6 15.7 144
HOLE-IN-ROCK 9150 .3 .0 * 24.5 15.6 157
INDIAN CREEK 9425 .0 .0 100* 41.0 35.2 116
KELLEY R.S. 8180 .0 .0 100* 36.3 28.8 126
STEEL CREEK PARK 10200 .0 .0 100* 37.1 26.9 138
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Basin wide percent of average * 132
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 44.3 27.4 162
HAYDEN FORK 9212 .0 .0 100* 47.3 31.7 149
KELLEY R.S. 8180 .0 .0 100* 36.3 28.8 126
LILY LAKE 9156 .0 .0 100* 37.4 27.1 138
MONTE CRISTO 8960 .1 .0 * 56.7 36.7 154
SALT RIVER SUMMIT 7760 .1 .0 * 31.8 26.6 120
TRIAL LAKE 9992 .1 .0 * 52.3 37.1 141
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Basin wide percent of average * 142
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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 1971-2000.
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.