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: JULY 23 , 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 -M .0 * 38.8 29.9 130
COTTONWOOD CREEK 7670 .0 .0 100* 55.1 38.7 142
GRAND TARGHEE 9260 .1 -M * 61.8 -M *
GRANITE CREEK 6770 .0 .0 100* 38.5 27.6 139
GRASSY LAKE 7265 .0 .0 100* 64.0 49.3 130
GROS VENTRE SUMMIT 8750 .0 .0 100* 25.5 20.9 122
GUNSIGHT PASS 9820 -M -M * 31.3 -M *
LEWIS LAKE DIVIDE 7850 1.2 .0 * 57.4 49.2 117
PHILLIPS BENCH 8200 -M .0 * 51.8 39.8 130
SALT RIVER SUMMIT 7760 .0 .0 100* 31.7 26.3 121
SNAKE RIVER STATION 6920 .0 .0 100* -M 31.8 *
SPRING CREEK DIVIDE 9000 -M .0 * -M 35.6 *
THUMB DIVIDE 7980 .1 .0 * -M 27.7 *
TOGWOTEE PASS 9580 .0 .0 100* 49.1 36.2 136
TWO OCEAN PLATEAU 9240 .0 .0 100* 50.2 40.7 123
WILLOW CREEK 8380 1.0 .0 * 63.9 46.5 137
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Basin wide percent of average * 130
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100* 40.8 31.3 130
BLACK BEAR 8170 .0 .0 100* 72.2 54.8 132
CANYON 7870 .0 .0 100* 29.7 23.9 124
FISHER CREEK 9100 .0 .0 100* 60.7 52.5 116
MADISON PLATEAU 7750 .0 .0 100* 51.7 38.1 136
NORTHEAST ENTRANCE 7350 .0 .0 100* 26.8 21.7 124
PARKER PEAK 9400 .0 .0 100* 45.3 27.3 166
SYLVAN LAKE 8420 .0 .0 100* 46.6 33.5 139
THUMB DIVIDE 7980 .1 .0 * -M 27.7 *
TWO OCEAN PLATEAU 9240 .0 .0 100* 50.2 40.7 123
WHISKEY CREEK 6800 .0 .0 100* 40.9 31.1 132
WHITE MILL 8700 .0 .0 100* 44.1 40.2 110
WOLVERINE 7650 -M .0 * 25.2 21.7 116
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Basin wide percent of average * 128
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 31.1 25.8 121
CASTLE CREEK 8400 .0 -M * 15.9 -M *
COLD SPRINGS 9630 .1 .0 * 22.3 20.3 110
DEER PARK 9700 .0 .0 100* 37.0 34.4 108
HOBBS PARK 10100 .0 .0 100* 30.3 24.6 123
LITTLE WARM 9370 .0 .0 100* 26.5 23.5 113
SOUTH PASS 9040 .1 .0 * 27.2 28.9 94
ST. LAWRENCE ALT 8620 .1 .0 * 21.8 18.4 118
TOGWOTEE PASS 9580 .0 .0 100* 49.1 36.2 136
TOWNSEND CREEK 8700 .0 .0 100* 23.6 22.0 107
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Basin wide percent of average * 115
BIGHORN BASIN
BALD MTN. 9380 -M .0 * 38.7 29.8 130
BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.1 122
BLACKWATER 9780 .0 .0 100* 44.1 33.9 130
BONE SPRINGS DIV 9350 .0 .0 100* 34.3 27.1 127
EVENING STAR 9200 .0 .0 100* 56.6 39.7 143
GRAVE SPRINGS 8550 .1 .0 * 23.8 20.0 119
KIRWIN 9550 .0 .0 100* 25.5 22.1 115
MARQUETTE 8760 .0 -M * 21.4 22.6 95
MIDDLE POWDER 7760 .0 .0 100* 25.9 23.0 113
OWL CREEK 8975 .0 .0 100* 16.6 14.6 114
POWDER RIVER PASS 9480 .0 .0 100* 32.9 23.7 139
SHELL CREEK 9580 .0 .0 100* 33.2 25.3 131
SYLVAN LAKE 8420 .0 .0 100* 46.6 33.5 139
SYLVAN ROAD 7120 .0 .0 100* 35.0 26.9 130
TIMBER CREEK 7950 .1 .0 * 18.1 17.8 102
YOUNTS PEAK 8350 .0 .0 100* 28.6 26.3 109
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Basin wide percent of average * 124
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 44.1 33.9 130
EVENING STAR 9200 .0 .0 100* 56.6 39.7 143
KIRWIN 9550 .0 .0 100* 25.5 22.1 115
MARQUETTE 8760 .0 -M * 21.4 22.6 95
SYLVAN LAKE 8420 .0 .0 100* 46.6 33.5 139
SYLVAN ROAD 7120 .0 .0 100* 35.0 26.9 130
YOUNTS PEAK 8350 .0 .0 100* 28.6 26.3 109
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Basin wide percent of average * 126
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.1 122
BIG GOOSE 7990 .0 .0 100* 27.4 19.5 141
BONE SPRINGS DIV 9350 .0 .0 100* 34.3 27.1 127
BURGESS JUNCTION 7880 .0 .0 100* 28.9 22.8 127
CLOUD PEAK RESERVOIR 9860 .1 .0 * 33.8 26.5 128
DOME LAKE 8880 .0 .0 100* 30.5 24.6 124
GRAVE SPRINGS 8550 .1 .0 * 23.8 20.0 119
HANSEN SAWMILL 8360 .0 .0 100* 23.5 18.4 128
LITTLE GOOSE 8870 .0 -M * 31.0 -M *
MIDDLE POWDER 7760 .0 .0 100* 25.9 23.0 113
POWDER RIVER PASS 9480 .0 .0 100* 32.9 23.7 139
SOLDIER PARK 8720 .0 -M * 23.5 -M *
SUCKER CREEK 8880 -M .0 * 34.6 26.0 133
TIE CREEK 6870 .0 .0 100* 28.6 21.1 136
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Basin wide percent of average * 128
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * 32.0 23.0 139
COLE CANYON 5910 .0 .0 100* 30.4 18.5 164
NORTH RAPID CREEK 6130 .0 .0 100* 30.3 21.0 144
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Basin wide percent of average * 148
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 61.8 -M *
CINNABAR PARK 9574 -M .0 * 49.8 29.7 168
COLUMBINE 9160 .0 .0 100* 51.7 34.7 149
DIVIDE PEAK 8880 .0 .0 100* 43.6 29.9 146
ELK RIVER 8700 .0 .0 100* 40.7 28.6 142
JOE WRIGHT 10120 .0 .0 100* 59.6 39.0 153
NORTH FRENCH CREEK 10130 .0 .0 100* -M 38.3 *
OLD BATTLE 10000 .0 .0 100* 69.9 47.2 148
SAGE CREEK BASIN 7850 -M .0 * -M 17.4 *
SOUTH BRUSH CREEK 8440 .0 .0 100* 36.3 26.9 135
TOWER 10500 .0 .0 100* 78.8 53.6 147
WEBBER SPRINGS 9250 .0 .0 100* 53.4 37.5 142
WILLOW CREEK PASS 9540 .0 .0 100* 35.0 22.3 157
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Basin wide percent of average * 148
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 49.3 34.6 142
CASPER MTN. 7900 .0 .0 100* 27.2 27.1 100
DEADMAN HILL 10220 .0 .0 100* 37.4 27.5 136
DEER PARK 9700 .0 .0 100* 37.0 34.4 108
LAPRELE CREEK 8375 .0 .0 100* 25.1 23.3 108
RENO HILL 8400 .0 .0 100* 30.7 27.6 111
ROACH 9700 .0 .0 100* 39.4 29.5 134
SAND LAKE 10050 .0 .0 100* 56.8 37.9 150
SOUTH PASS 9040 .1 .0 * 27.2 28.9 94
WINDY PEAK 7900 .0 .0 100* 22.8 20.4 112
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Basin wide percent of average * 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * -M 22.9 *
DIVIDE PEAK 8880 .0 .0 100* 43.6 29.9 146
OLD BATTLE 10000 .0 .0 100* 69.9 47.2 148
SANDSTONE RS 8150 -M .0 * 40.9 27.2 150
WHISKEY PARK 8950 -M .0 * 64.0 41.1 156
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Basin wide percent of average * 150
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100* 26.5 21.4 124
BLIND BULL SUM 8650 .0 .0 100* 35.9 30.7 117
EAST RIM DIVIDE 7930 .2 .0 * 22.9 18.2 126
ELKHART PARK G.S. 9400 .0 .0 100* 23.2 21.9 106
GROS VENTRE SUMMIT 8750 .0 .0 100* 25.5 20.9 122
GUNSIGHT PASS 9820 -M -M * 31.3 -M *
KENDALL R.S. 7740 -M .0 * 23.9 21.0 114
LOOMIS PARK 8240 .1 .0 * 33.1 24.9 133
NEW FORK LAKE 8340 -M .0 * -M 18.6 *
POCKET CREEK 9360 .0 -M * 24.9 -M *
SNIDER BASIN 8060 .0 .0 100* 28.3 22.3 127
SPRING CREEK DIVIDE 9000 -M .0 * -M 35.6 *
TRIPLE PEAK 8500 .0 .0 100* 50.4 34.9 144
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Basin wide percent of average * 125
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 25.0 19.2 130
HEWINTA 9519 .0 .0 100* 32.3 23.3 139
HICKERSON PARK 9145 .0 .0 100* 22.3 15.2 147
HOLE-IN-ROCK 9150 .2 .0 * 24.2 15.1 160
INDIAN CREEK 9425 .0 .0 100* 40.9 34.8 118
KELLEY R.S. 8180 .0 .0 100* -M 28.5 *
STEEL CREEK PARK 10200 .0 .0 100* 36.9 26.3 140
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Basin wide percent of average * 136
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 44.1 27.1 163
HAYDEN FORK 9212 .0 .0 100* 46.8 31.2 150
KELLEY R.S. 8180 .0 .0 100* -M 28.5 *
LILY LAKE 9156 .0 .0 100* 37.0 26.6 139
MONTE CRISTO 8960 .0 .0 100* 56.0 36.4 154
SALT RIVER SUMMIT 7760 .0 .0 100* 31.7 26.3 121
TRIAL LAKE 9992 .1 .0 * 52.0 36.5 142
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Basin wide percent of average * 145
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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.