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 SUNDAY: AUGUST 28 , 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 .1 .0 * 40.1 31.4 128
COTTONWOOD CREEK 7670 .0 .0 100* 57.0 40.6 140
GRAND TARGHEE 9260 .0 -M * 64.0 -M *
GRANITE CREEK 6770 .0 .0 100* 39.5 29.0 136
GRASSY LAKE 7265 .0 .0 100* 66.0 51.1 129
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.5 22.8 116
GUNSIGHT PASS 9820 .0 -M * 32.6 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100* 59.4 51.1 116
PHILLIPS BENCH 8200 .1 .0 * 53.3 41.6 128
SALT RIVER SUMMIT 7760 .1 .0 * 33.9 27.8 122
SNAKE RIVER STATION 6920 .0 .0 100* 44.5 33.4 133
SPRING CREEK DIVIDE 9000 -M .0 * -M 37.3 *
THUMB DIVIDE 7980 .1 .0 * 36.1 28.9 125
TOGWOTEE PASS 9580 .0 .0 100* 50.4 38.3 132
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.3 42.6 120
WILLOW CREEK 8380 .1 .0 * 65.8 48.8 135
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Basin wide percent of average * 128
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100* 42.0 33.2 127
BLACK BEAR 8170 .0 .0 100* 73.2 57.0 128
CANYON 7870 .0 .0 100* 30.0 25.8 116
FISHER CREEK 9100 .0 .0 100* 61.6 55.2 112
MADISON PLATEAU 7750 .0 .0 100* 52.3 39.8 131
NORTHEAST ENTRANCE 7350 .0 .0 100* 27.5 23.9 115
PARKER PEAK 9400 .1 .0 * 46.4 29.0 160
SYLVAN LAKE 8420 .0 .0 100* -M 35.2 *
THUMB DIVIDE 7980 .1 .0 * 36.1 28.9 125
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.3 42.6 120
WHISKEY CREEK 6800 .1 .0 * 40.7 32.8 124
WHITE MILL 8700 .0 .0 100* 44.9 42.7 105
WOLVERINE 7650 -M .0 * 26.8 23.7 113
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Basin wide percent of average * 123
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* -M 27.6 *
CASTLE CREEK 8400 .2 -M * -M -M *
COLD SPRINGS 9630 .1 .0 * -M 21.9 *
DEER PARK 9700 .0 .0 100* 37.1 36.0 103
HOBBS PARK 10100 -M .0 * 30.5 26.3 116
LITTLE WARM 9370 .0 .0 100* -M 25.2 *
SOUTH PASS 9040 .0 .0 100* 27.6 30.3 91
ST. LAWRENCE ALT 8620 .0 .0 100* 22.2 19.9 112
TOGWOTEE PASS 9580 .0 .0 100* 50.4 38.3 132
TOWNSEND CREEK 8700 .0 .0 100* 24.5 23.3 105
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Basin wide percent of average * 110
BIGHORN BASIN
BALD MTN. 9380 -M .0 * 38.3 31.4 122
BEAR TRAP MEADOW 8200 .0 .0 100* 21.9 19.3 113
BLACKWATER 9780 .0 .0 100* 43.5 36.0 121
BONE SPRINGS DIV 9350 .0 .0 100* 35.4 29.3 121
EVENING STAR 9200 .3 .0 * 58.0 41.8 139
GRAVE SPRINGS 8550 .1 .0 * 24.1 21.2 114
KIRWIN 9550 .0 .0 100* 27.0 24.6 110
MARQUETTE 8760 .1 -M * 21.9 24.7 89
MIDDLE POWDER 7760 .0 .0 100* 25.6 24.2 106
OWL CREEK 8975 .0 .0 100* 16.4 16.2 101
POWDER RIVER PASS 9480 .0 .0 100* 33.8 25.2 134
SHELL CREEK 9580 .0 .0 100* 34.0 26.9 126
SYLVAN LAKE 8420 .0 .0 100* -M 35.2 *
SYLVAN ROAD 7120 .1 .0 * 35.5 28.4 125
TIMBER CREEK 7950 .0 .0 100* 18.9 19.7 96
YOUNTS PEAK 8350 .0 .0 100* 29.7 28.6 104
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Basin wide percent of average * 117
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 43.5 36.0 121
EVENING STAR 9200 .3 .0 * 58.0 41.8 139
KIRWIN 9550 .0 .0 100* 27.0 24.6 110
MARQUETTE 8760 .1 -M * 21.9 24.7 89
SYLVAN LAKE 8420 .0 .0 100* -M 35.2 *
SYLVAN ROAD 7120 .1 .0 * 35.5 28.4 125
YOUNTS PEAK 8350 .0 .0 100* 29.7 28.6 104
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Basin wide percent of average * 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 21.9 19.3 113
BIG GOOSE 7990 .0 .0 100* 28.2 20.7 136
BONE SPRINGS DIV 9350 .0 .0 100* 35.4 29.3 121
BURGESS JUNCTION 7880 .1 .0 * 30.4 24.5 124
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 34.9 28.5 122
DOME LAKE 8880 .0 .0 100* 31.3 26.5 118
GRAVE SPRINGS 8550 .1 .0 * 24.1 21.2 114
HANSEN SAWMILL 8360 .0 .0 100* 24.2 20.2 120
LITTLE GOOSE 8870 .0 -M * 32.3 -M *
MIDDLE POWDER 7760 .0 .0 100* 25.6 24.2 106
POWDER RIVER PASS 9480 .0 .0 100* 33.8 25.2 134
SOLDIER PARK 8720 -M -M * 24.2 -M *
SUCKER CREEK 8880 -M .0 * 36.0 27.7 130
TIE CREEK 6870 .0 .0 100* 29.3 22.9 128
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Basin wide percent of average * 122
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 32.3 25.3 128
COLE CANYON 5910 .1 .0 * 31.1 21.0 148
NORTH RAPID CREEK 6130 .1 .0 * 31.1 23.9 130
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Basin wide percent of average * 135
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 63.1 -M *
CINNABAR PARK 9574 .1 .0 * 51.4 31.4 164
COLUMBINE 9160 .1 .0 * 52.8 36.3 145
DIVIDE PEAK 8880 .0 .0 100* 44.1 31.5 140
ELK RIVER 8700 .0 .0 100* 41.3 30.5 135
JOE WRIGHT 10120 .0 .0 100* 61.4 41.9 147
NORTH FRENCH CREEK 10130 .0 .0 100* 80.5 40.3 200
OLD BATTLE 10000 .0 .0 100* 70.5 49.0 144
SAGE CREEK BASIN 7850 .0 .0 100* 28.3 18.3 155
SOUTH BRUSH CREEK 8440 .0 .0 100* 37.1 28.8 129
TOWER 10500 .0 .0 100* 90.0 55.7 162
WEBBER SPRINGS 9250 .1 .0 * 53.9 39.2 138
WILLOW CREEK PASS 9540 .1 .0 * 35.7 24.6 145
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Basin wide percent of average * 151
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 49.9 36.5 137
CASPER MTN. 7900 .0 .0 100* 27.3 28.6 95
DEADMAN HILL 10220 .0 .0 100* 38.4 29.6 130
DEER PARK 9700 .0 .0 100* 37.1 36.0 103
LAPRELE CREEK 8375 .0 .0 100* 25.6 25.8 99
RENO HILL 8400 .0 .0 100* 30.7 29.5 104
ROACH 9700 .1 .0 * 40.4 31.6 128
SAND LAKE 10050 .0 .0 100* 57.4 39.8 144
SOUTH PASS 9040 .0 .0 100* 27.6 30.3 91
WINDY PEAK 7900 .0 .0 100* 22.8 22.3 102
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Basin wide percent of average * 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 30.1 24.0 125
DIVIDE PEAK 8880 .0 .0 100* 44.1 31.5 140
OLD BATTLE 10000 .0 .0 100* 70.5 49.0 144
SANDSTONE RS 8150 -M .0 * 42.4 28.9 147
WHISKEY PARK 8950 .0 .0 100* 64.8 42.8 151
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Basin wide percent of average * 143
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .0 * 27.1 22.9 118
BLIND BULL SUM 8650 .0 .0 100* 37.5 32.5 115
EAST RIM DIVIDE 7930 .3 .0 * 24.4 19.7 124
ELKHART PARK G.S. 9400 .0 .0 100* 24.3 23.9 102
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.5 22.8 116
GUNSIGHT PASS 9820 .0 -M * 32.6 -M *
KENDALL R.S. 7740 .0 .0 100* 24.9 22.3 112
LOOMIS PARK 8240 .1 .0 * 34.3 26.9 128
NEW FORK LAKE 8340 .2 .0 * 19.5 20.2 97
POCKET CREEK 9360 .0 -M * 25.5 -M *
SNIDER BASIN 8060 .0 .0 100* 29.3 23.4 125
SPRING CREEK DIVIDE 9000 -M .0 * -M 37.3 *
TRIPLE PEAK 8500 .0 .0 100* 52.1 36.5 143
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Basin wide percent of average * 119
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * 25.6 20.5 125
HEWINTA 9519 .0 .0 100* 33.6 25.5 132
HICKERSON PARK 9145 .0 .0 100* 24.7 17.5 141
HOLE-IN-ROCK 9150 .4 .0 * 27.0 17.4 155
INDIAN CREEK 9425 .2 .0 * 41.8 36.4 115
KELLEY R.S. 8180 .0 .0 100* 37.3 29.7 126
STEEL CREEK PARK 10200 .0 .0 100* 38.5 28.6 135
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Basin wide percent of average * 130
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 45.3 28.5 159
HAYDEN FORK 9212 .0 .0 100* 48.2 33.2 145
KELLEY R.S. 8180 .0 .0 100* 37.3 29.7 126
LILY LAKE 9156 .0 .0 100* 38.7 28.6 135
MONTE CRISTO 8960 .0 .0 100* 58.3 37.9 154
SALT RIVER SUMMIT 7760 .1 .0 * 33.9 27.8 122
TRIAL LAKE 9992 .1 .0 * 53.1 39.1 136
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Basin wide percent of average * 140
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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.