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 TUESDAY: AUGUST 9 , 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 .5 .0 * 39.6 30.7 129
COTTONWOOD CREEK 7670 .0 .0 100* 56.7 39.5 144
GRAND TARGHEE 9260 .0 -M * 63.2 -M *
GRANITE CREEK 6770 .0 .0 100* 39.3 28.3 139
GRASSY LAKE 7265 .0 .0 100* 65.9 50.1 132
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.5 21.8 122
GUNSIGHT PASS 9820 -M -M * 32.5 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 * 59.7 50.1 119
PHILLIPS BENCH 8200 .0 .0 100* 52.9 40.6 130
SALT RIVER SUMMIT 7760 .0 .0 100* 33.2 26.9 123
SNAKE RIVER STATION 6920 .0 .0 100* 44.4 32.5 137
SPRING CREEK DIVIDE 9000 -M .0 * -M 36.4 *
THUMB DIVIDE 7980 .1 .0 * 35.7 28.2 127
TOGWOTEE PASS 9580 .0 .0 100* 50.0 37.4 134
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.1 41.7 123
WILLOW CREEK 8380 .0 .0 100* 65.5 47.6 138
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Basin wide percent of average * 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100* 41.5 32.3 128
BLACK BEAR 8170 .0 .0 100* 72.8 55.9 130
CANYON 7870 .0 .0 100* 29.8 24.8 120
FISHER CREEK 9100 .0 .0 100* 61.3 53.8 114
MADISON PLATEAU 7750 .0 .0 100* 52.1 38.9 134
NORTHEAST ENTRANCE 7350 .1 .0 * 27.5 22.8 121
PARKER PEAK 9400 .0 .0 100* 45.8 28.2 162
SYLVAN LAKE 8420 .1 .0 * 47.6 34.5 138
THUMB DIVIDE 7980 .1 .0 * 35.7 28.2 127
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.1 41.7 123
WHISKEY CREEK 6800 .0 .0 100* 40.9 31.8 129
WHITE MILL 8700 .0 .0 100* 44.8 41.5 108
WOLVERINE 7650 -M .0 * 26.4 22.7 116
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Basin wide percent of average * 126
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 31.1 26.7 116
CASTLE CREEK 8400 .1 -M * 16.6 -M *
COLD SPRINGS 9630 .0 .0 100* 22.2 21.2 105
DEER PARK 9700 .0 .0 100* 36.8 35.2 105
HOBBS PARK 10100 .0 .0 100* 30.2 25.5 118
LITTLE WARM 9370 .0 .0 100* 27.1 24.4 111
SOUTH PASS 9040 .0 .0 100* 26.8 29.6 91
ST. LAWRENCE ALT 8620 .0 .0 100* 21.9 19.2 114
TOGWOTEE PASS 9580 .0 .0 100* 50.0 37.4 134
TOWNSEND CREEK 8700 .0 .0 100* 23.9 22.7 105
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Basin wide percent of average * 112
BIGHORN BASIN
BALD MTN. 9380 -M .0 * 38.2 30.8 124
BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.8 118
BLACKWATER 9780 .0 .0 100* 43.6 35.0 125
BONE SPRINGS DIV 9350 -M .0 * 34.5 28.3 122
EVENING STAR 9200 .1 .0 * 57.5 40.9 141
GRAVE SPRINGS 8550 .2 .0 * 24.0 20.9 115
KIRWIN 9550 .0 .0 100* 26.5 23.5 113
MARQUETTE 8760 .0 -M * 21.7 23.8 91
MIDDLE POWDER 7760 .0 .0 100* 25.4 23.7 107
OWL CREEK 8975 .0 .0 100* 16.3 15.6 104
POWDER RIVER PASS 9480 .0 .0 100* 33.1 24.6 135
SHELL CREEK 9580 .0 .0 100* 33.3 26.2 127
SYLVAN LAKE 8420 .1 .0 * 47.6 34.5 138
SYLVAN ROAD 7120 .0 .0 100* 35.5 27.6 129
TIMBER CREEK 7950 .0 .0 100* 18.5 18.9 98
YOUNTS PEAK 8350 .0 .0 100* 29.3 27.5 107
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Basin wide percent of average * 121
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 43.6 35.0 125
EVENING STAR 9200 .1 .0 * 57.5 40.9 141
KIRWIN 9550 .0 .0 100* 26.5 23.5 113
MARQUETTE 8760 .0 -M * 21.7 23.8 91
SYLVAN LAKE 8420 .1 .0 * 47.6 34.5 138
SYLVAN ROAD 7120 .0 .0 100* 35.5 27.6 129
YOUNTS PEAK 8350 .0 .0 100* 29.3 27.5 107
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Basin wide percent of average * 123
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.8 118
BIG GOOSE 7990 -M .0 * 27.5 19.9 138
BONE SPRINGS DIV 9350 -M .0 * 34.5 28.3 122
BURGESS JUNCTION 7880 -M .0 * 29.1 23.9 122
CLOUD PEAK RESERVOIR 9860 .1 .0 * 34.2 27.7 123
DOME LAKE 8880 .0 .0 100* 30.5 25.6 119
GRAVE SPRINGS 8550 .2 .0 * 24.0 20.9 115
HANSEN SAWMILL 8360 -M .0 * 23.8 19.4 123
LITTLE GOOSE 8870 .1 -M * 31.6 -M *
MIDDLE POWDER 7760 .0 .0 100* 25.4 23.7 107
POWDER RIVER PASS 9480 .0 .0 100* 33.1 24.6 135
SOLDIER PARK 8720 -M -M * 23.7 -M *
SUCKER CREEK 8880 -M .0 * 34.3 27.0 127
TIE CREEK 6870 .0 .0 100* 28.9 21.9 132
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Basin wide percent of average * 123
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 32.2 24.4 132
COLE CANYON 5910 .0 .0 100* 30.8 19.9 155
NORTH RAPID CREEK 6130 .0 .0 100* 30.9 22.9 135
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Basin wide percent of average * 140
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 62.1 -M *
CINNABAR PARK 9574 .0 .0 100* 50.3 30.4 165
COLUMBINE 9160 .0 .0 100* 51.9 35.6 146
DIVIDE PEAK 8880 .0 .0 100* 44.1 30.7 144
ELK RIVER 8700 .0 .0 100* 40.9 29.5 139
JOE WRIGHT 10120 .1 .0 * 60.3 40.5 149
NORTH FRENCH CREEK 10130 -M .0 * -M 39.4 *
OLD BATTLE 10000 .0 .0 100* 70.0 48.1 146
SAGE CREEK BASIN 7850 .0 .0 100* 28.2 17.8 158
SOUTH BRUSH CREEK 8440 .0 .0 100* 36.4 27.8 131
TOWER 10500 .0 .0 100* 79.8 54.6 146
WEBBER SPRINGS 9250 .0 .0 100* 53.2 38.3 139
WILLOW CREEK PASS 9540 .0 .0 100* 35.3 23.4 151
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Basin wide percent of average * 146
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 49.4 35.6 139
CASPER MTN. 7900 .0 .0 100* 27.8 27.9 100
DEADMAN HILL 10220 .0 .0 100* 37.8 28.6 132
DEER PARK 9700 .0 .0 100* 36.8 35.2 105
LAPRELE CREEK 8375 .0 .0 100* 25.5 24.6 104
RENO HILL 8400 .0 .0 100* 30.9 28.7 108
ROACH 9700 .0 .0 100* 39.4 30.6 129
SAND LAKE 10050 .0 .0 100* 57.1 38.9 147
SOUTH PASS 9040 .0 .0 100* 26.8 29.6 91
WINDY PEAK 7900 .0 .0 100* 22.7 21.5 106
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Basin wide percent of average * 118
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * -M 23.4 *
DIVIDE PEAK 8880 .0 .0 100* 44.1 30.7 144
OLD BATTLE 10000 .0 .0 100* 70.0 48.1 146
SANDSTONE RS 8150 2.1 .0 * 41.8 28.0 149
WHISKEY PARK 8950 .0 .0 100* 64.3 42.0 153
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Basin wide percent of average * 148
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100* 26.8 22.1 121
BLIND BULL SUM 8650 .0 .0 100* 37.0 31.5 117
EAST RIM DIVIDE 7930 .3 .0 * 23.7 18.9 125
ELKHART PARK G.S. 9400 .0 .0 100* 23.8 22.8 104
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.5 21.8 122
GUNSIGHT PASS 9820 -M -M * 32.5 -M *
KENDALL R.S. 7740 .0 .0 100* 24.7 21.6 114
LOOMIS PARK 8240 .1 .0 * 33.9 25.8 131
NEW FORK LAKE 8340 .1 .0 * 19.3 19.3 100
POCKET CREEK 9360 .0 -M * 25.1 -M *
SNIDER BASIN 8060 .0 .0 100* 28.7 22.8 126
SPRING CREEK DIVIDE 9000 -M .0 * -M 36.4 *
TRIPLE PEAK 8500 .0 .0 100* 51.8 35.6 146
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Basin wide percent of average * 122
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * 25.5 19.8 129
HEWINTA 9519 .0 .0 100* 33.2 24.4 136
HICKERSON PARK 9145 .0 .0 100* 23.2 16.3 142
HOLE-IN-ROCK 9150 .2 .0 * 25.4 16.1 158
INDIAN CREEK 9425 .0 .0 100* 41.6 35.5 117
KELLEY R.S. 8180 .0 .0 100* 37.0 29.1 127
STEEL CREEK PARK 10200 .0 .0 100* 37.6 27.5 137
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Basin wide percent of average * 132
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 45.3 27.7 164
HAYDEN FORK 9212 .0 .0 100* 47.5 32.2 148
KELLEY R.S. 8180 .0 .0 100* 37.0 29.1 127
LILY LAKE 9156 .0 .0 100* 37.8 27.5 137
MONTE CRISTO 8960 .0 .0 100* 57.6 37.0 156
SALT RIVER SUMMIT 7760 .0 .0 100* 33.2 26.9 123
TRIAL LAKE 9992 .0 .0 100* 52.5 37.8 139
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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.