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 2 , 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 * 39.6 30.4 130
COTTONWOOD CREEK 7670 .0 .0 100* 56.5 39.2 144
GRAND TARGHEE 9260 .0 -M * 63.0 -M *
GRANITE CREEK 6770 .0 .0 100* 39.2 28.0 140
GRASSY LAKE 7265 .1 .0 * 65.8 49.8 132
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.1 21.4 122
GUNSIGHT PASS 9820 .6 -M * 31.9 -M *
LEWIS LAKE DIVIDE 7850 .2 .0 * 59.0 49.7 119
PHILLIPS BENCH 8200 -M .0 * 52.5 40.3 130
SALT RIVER SUMMIT 7760 .1 .0 * 32.7 26.6 123
SNAKE RIVER STATION 6920 .0 .0 100* 42.9 32.2 133
SPRING CREEK DIVIDE 9000 -M .0 * -M 36.0 *
THUMB DIVIDE 7980 .1 .0 * 35.5 28.0 127
TOGWOTEE PASS 9580 .0 .0 100* 49.9 36.9 135
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.0 41.2 124
WILLOW CREEK 8380 .1 .0 * 65.3 47.1 139
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Basin wide percent of average * 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100* 41.3 32.0 129
BLACK BEAR 8170 .0 .0 100* 72.5 55.5 131
CANYON 7870 .0 .0 100* 29.8 24.5 122
FISHER CREEK 9100 .0 .0 100* 61.0 53.3 114
MADISON PLATEAU 7750 .0 .0 100* 52.0 38.5 135
NORTHEAST ENTRANCE 7350 .0 .0 100* 27.2 22.4 121
PARKER PEAK 9400 .0 .0 100* 45.8 27.9 164
SYLVAN LAKE 8420 .0 .0 100* 47.6 34.2 139
THUMB DIVIDE 7980 .1 .0 * 35.5 28.0 127
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.0 41.2 124
WHISKEY CREEK 6800 .0 .0 100* 40.7 31.5 129
WHITE MILL 8700 .0 .0 100* 44.1 41.0 108
WOLVERINE 7650 .0 .0 100* 26.0 22.4 116
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Basin wide percent of average * 127
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 30.9 26.4 117
CASTLE CREEK 8400 .0 -M * 16.2 -M *
COLD SPRINGS 9630 .0 .0 100* 22.4 20.9 107
DEER PARK 9700 .0 .0 100* 37.1 34.8 107
HOBBS PARK 10100 .0 .0 100* 30.4 25.2 121
LITTLE WARM 9370 .0 .0 100* 26.5 24.0 110
SOUTH PASS 9040 .0 .0 100* 27.3 29.3 93
ST. LAWRENCE ALT 8620 .0 .0 100* 21.8 18.9 115
TOGWOTEE PASS 9580 .0 .0 100* 49.9 36.9 135
TOWNSEND CREEK 8700 .0 .0 100* 23.9 22.5 106
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Basin wide percent of average * 113
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100* 38.7 30.4 127
BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.5 119
BLACKWATER 9780 .0 .0 100* 44.3 34.7 128
BONE SPRINGS DIV 9350 .0 .0 100* 34.5 27.9 124
EVENING STAR 9200 .0 .0 100* 57.5 40.5 142
GRAVE SPRINGS 8550 .0 .0 100* 24.0 20.6 117
KIRWIN 9550 .0 .0 100* 25.7 23.1 111
MARQUETTE 8760 .0 -M * 21.5 23.4 92
MIDDLE POWDER 7760 .0 .0 100* 25.8 23.4 110
OWL CREEK 8975 .0 .0 100* 16.6 15.3 108
POWDER RIVER PASS 9480 .0 .0 100* 33.1 24.3 136
SHELL CREEK 9580 .0 .0 100* 33.2 25.9 128
SYLVAN LAKE 8420 .0 .0 100* 47.6 34.2 139
SYLVAN ROAD 7120 .0 .0 100* 35.4 27.3 130
TIMBER CREEK 7950 .0 .0 100* 18.3 18.5 99
YOUNTS PEAK 8350 .0 .0 100* 29.0 27.1 107
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Basin wide percent of average * 122
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 44.3 34.7 128
EVENING STAR 9200 .0 .0 100* 57.5 40.5 142
KIRWIN 9550 .0 .0 100* 25.7 23.1 111
MARQUETTE 8760 .0 -M * 21.5 23.4 92
SYLVAN LAKE 8420 .0 .0 100* 47.6 34.2 139
SYLVAN ROAD 7120 .0 .0 100* 35.4 27.3 130
YOUNTS PEAK 8350 .0 .0 100* 29.0 27.1 107
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Basin wide percent of average * 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.5 119
BIG GOOSE 7990 .0 .0 100* 27.5 19.7 140
BONE SPRINGS DIV 9350 .0 .0 100* 34.5 27.9 124
BURGESS JUNCTION 7880 .0 .0 100* 29.0 23.5 123
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 34.0 27.3 125
DOME LAKE 8880 .0 .0 100* 30.6 25.3 121
GRAVE SPRINGS 8550 .0 .0 100* 24.0 20.6 117
HANSEN SAWMILL 8360 .0 .0 100* 23.6 19.0 124
LITTLE GOOSE 8870 .0 -M * 31.3 -M *
MIDDLE POWDER 7760 .0 .0 100* 25.8 23.4 110
POWDER RIVER PASS 9480 .0 .0 100* 33.1 24.3 136
SOLDIER PARK 8720 .0 -M * 23.6 -M *
SUCKER CREEK 8880 .0 .0 100* 34.7 26.6 130
TIE CREEK 6870 .0 .0 100* 28.8 21.6 133
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Basin wide percent of average * 125
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 32.0 24.0 133
COLE CANYON 5910 .0 .0 100* 30.6 19.3 159
NORTH RAPID CREEK 6130 .0 .0 100* 30.7 22.3 138
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Basin wide percent of average * 142
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 61.9 -M *
CINNABAR PARK 9574 -M .0 * 50.1 30.2 166
COLUMBINE 9160 .0 .0 100* 52.0 35.2 148
DIVIDE PEAK 8880 .0 .0 100* 44.1 30.4 145
ELK RIVER 8700 .0 .0 100* 40.9 29.1 141
JOE WRIGHT 10120 .1 .0 * 60.4 39.9 151
NORTH FRENCH CREEK 10130 .0 .0 100* -M 38.9 *
OLD BATTLE 10000 .0 .0 100* 70.0 47.8 146
SAGE CREEK BASIN 7850 .0 .0 100* 28.1 17.6 160
SOUTH BRUSH CREEK 8440 .0 .0 100* 36.4 27.5 132
TOWER 10500 .0 .0 100* 79.8 54.2 147
WEBBER SPRINGS 9250 .0 .0 100* 53.2 38.0 140
WILLOW CREEK PASS 9540 .0 .0 100* 35.2 23.0 153
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Basin wide percent of average * 148
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 49.3 35.2 140
CASPER MTN. 7900 .0 .0 100* 27.8 27.6 101
DEADMAN HILL 10220 .0 .0 100* 37.6 28.1 134
DEER PARK 9700 .0 .0 100* 37.1 34.8 107
LAPRELE CREEK 8375 .0 .0 100* 24.9 24.1 103
RENO HILL 8400 .0 .0 100* 30.9 28.2 110
ROACH 9700 .0 .0 100* 39.4 30.1 131
SAND LAKE 10050 .0 .0 100* 57.2 38.5 149
SOUTH PASS 9040 .0 .0 100* 27.3 29.3 93
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 30.4 145
OLD BATTLE 10000 .0 .0 100* 70.0 47.8 146
SANDSTONE RS 8150 .8 .0 * 41.7 27.7 151
WHISKEY PARK 8950 .0 .0 100* 64.2 41.6 154
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Basin wide percent of average * 149
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .0 * 26.8 21.8 123
BLIND BULL SUM 8650 .0 .0 100* 36.8 31.2 118
EAST RIM DIVIDE 7930 .3 .0 * 23.6 18.6 127
ELKHART PARK G.S. 9400 .0 .0 100* 23.6 22.4 105
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.1 21.4 122
GUNSIGHT PASS 9820 .6 -M * 31.9 -M *
KENDALL R.S. 7740 .0 .0 100* 24.5 21.3 115
LOOMIS PARK 8240 .1 .0 * 33.6 25.4 132
NEW FORK LAKE 8340 .2 .0 * 19.1 19.0 101
POCKET CREEK 9360 .0 -M * 25.0 -M *
SNIDER BASIN 8060 .0 .0 100* 28.7 22.6 127
SPRING CREEK DIVIDE 9000 -M .0 * -M 36.0 *
TRIPLE PEAK 8500 .1 .0 * 51.0 35.3 144
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Basin wide percent of average * 123
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * 25.5 19.6 130
HEWINTA 9519 .0 .0 100* 32.6 24.0 136
HICKERSON PARK 9145 .0 .0 100* 22.6 15.8 143
HOLE-IN-ROCK 9150 .2 .0 * 24.5 15.6 157
INDIAN CREEK 9425 .0 .0 100* 41.5 35.2 118
KELLEY R.S. 8180 .0 .0 100* 37.0 28.8 128
STEEL CREEK PARK 10200 .0 .0 100* 37.3 27.0 138
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Basin wide percent of average * 133
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 45.0 27.5 164
HAYDEN FORK 9212 .0 .0 100* 47.5 31.8 149
KELLEY R.S. 8180 .0 .0 100* 37.0 28.8 128
LILY LAKE 9156 .0 .0 100* 37.7 27.1 139
MONTE CRISTO 8960 .0 .0 100* 57.3 36.7 156
SALT RIVER SUMMIT 7760 .1 .0 * 32.7 26.6 123
TRIAL LAKE 9992 .1 .0 * 52.5 37.2 141
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Basin wide percent of average * 144
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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.