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: MAY 25 , 2008
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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 5.9 1.9 311 32.4 26.5 122
COTTONWOOD CREEK 7670 13.7 8.9 154 30.8 35.1 88
GRAND TARGHEE 9260 54.7 -M * 43.8 -M *
GRANITE CREEK 6770 5.5 3.8 145 27.1 24.4 111
GRASSY LAKE 7265 27.2 19.7 138 51.9 44.2 117
GROS VENTRE SUMMIT 8750 4.8 6.4 75 18.0 17.1 105
GUNSIGHT PASS 9820 7.8 -M * 19.1 -M *
LEWIS LAKE DIVIDE 7850 28.6 23.0 124 43.7 44.6 98
PHILLIPS BENCH 8200 23.6 18.4 128 41.2 35.9 115
SALT RIVER SUMMIT 7760 .4 .0 19.8 23.6 84
SNAKE RIVER STATION 6920 1.9 .5 380 33.0 27.8 119
SPRING CREEK DIVIDE 9000 16.7 19.5 86 28.5 32.5 88
THUMB DIVIDE 7980 6.8 5.2 131 25.4 24.3 105
TOGWOTEE PASS 9580 29.1 24.8 117 37.3 32.0 117
TWO OCEAN PLATEAU 9240 42.7 28.0 152 40.1 35.5 113
WILLOW CREEK 8380 23.0 19.3 119 48.2 41.7 116
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Basin wide percent of average 128 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.4 23.2 122 31.1 26.3 118
BLACK BEAR 8170 44.8 31.5 142 51.6 49.4 104
CANYON 7870 10.2 3.5 291 25.5 19.9 128
FISHER CREEK 9100 45.1 33.0 137 47.8 45.7 105
MADISON PLATEAU 7750 26.0 13.6 191 39.8 33.4 119
NORTHEAST ENTRANCE 7350 .2 .9 22 19.1 16.9 113
PARKER PEAK 9400 29.7 21.5 138 -M 22.4 *
SYLVAN LAKE 8420 22.9 15.5 148 34.8 28.0 124
THUMB DIVIDE 7980 6.8 5.2 131 25.4 24.3 105
TWO OCEAN PLATEAU 9240 42.7 28.0 152 40.1 35.5 113
WHISKEY CREEK 6800 -M 4.5 * 30.7 26.6 115
WHITE MILL 8700 28.6 21.3 134 34.6 34.3 101
WOLVERINE 7650 .0 .6 0 19.7 17.7 111
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Basin wide percent of average 144 112
WIND RIVER
BURROUGHS CREEK 8750 10.9 6.3 173 23.4 21.9 107
COLD SPRINGS 9630 1.2 1.3 92 15.9 16.5 96
DEER PARK 9700 14.3 13.2 108 27.4 30.1 91
HOBBS PARK 10100 15.4 13.2 117 21.8 20.2 108
LITTLE WARM 9370 1.7 3.9 44 19.3 19.4 99
SOUTH PASS 9040 9.2 9.2 100 24.0 25.4 94
ST. LAWRENCE ALT 8620 1.4 1.0 140 14.0 14.6 96
TOGWOTEE PASS 9580 29.1 24.8 117 37.3 32.0 117
TOWNSEND CREEK 8700 1.8 2.8 64 18.5 18.2 102
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Basin wide percent of average 112 102
BIGHORN BASIN
BALD MTN. 9380 19.6 19.9 98 23.7 24.6 96
BEAR TRAP MEADOW 8200 1.7 .1 1700 17.6 13.5 130
BLACKWATER 9780 30.3 27.7 109 32.6 28.0 116
BONE SPRINGS DIV 9350 17.1 12.2 140 26.5 21.5 123
EVENING STAR 9200 29.7 29.6 100 43.6 33.4 131
GRAVE SPRINGS 8550 -M 2.9 * 17.8 15.5 115
KIRWIN 9550 9.8 8.2 120 20.6 16.8 123
MARQUETTE 8760 7.7 6.2 124 18.8 17.1 110
MIDDLE POWDER 7760 9.1 6.0 152 17.5 18.5 95
OWL CREEK 8975 2.2 1.1 200 11.6 10.4 112
POWDER RIVER PASS 9480 9.6 4.3 223 23.5 18.8 125
SHELL CREEK 9580 18.3 13.4 137 23.7 19.8 120
SYLVAN LAKE 8420 22.9 15.5 148 34.8 28.0 124
SYLVAN ROAD 7120 .0 .4 0 27.3 22.7 120
TIMBER CREEK 7950 2.9 1.1 264 16.1 13.6 118
YOUNTS PEAK 8350 13.8 10.8 128 22.8 21.3 107
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Basin wide percent of average 124 117
SHOSHONE RIVER
BLACKWATER 9780 30.3 27.7 109 32.6 28.0 116
EVENING STAR 9200 29.7 29.6 100 43.6 33.4 131
KIRWIN 9550 9.8 8.2 120 20.6 16.8 123
MARQUETTE 8760 7.7 6.2 124 18.8 17.1 110
SYLVAN LAKE 8420 22.9 15.5 148 34.8 28.0 124
SYLVAN ROAD 7120 .0 .4 0 27.3 22.7 120
YOUNTS PEAK 8350 13.8 10.8 128 22.8 21.3 107
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Basin wide percent of average 116 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.7 .1 1700 17.6 13.5 130
BIG GOOSE 7990 8.3 6.2 134 21.3 15.8 135
BONE SPRINGS DIV 9350 17.1 12.2 140 26.5 21.5 123
BURGESS JUNCTION 7880 14.2 5.9 241 23.0 17.9 128
CLOUD PEAK RESERVOIR 9860 20.7 11.2 185 -M 20.8 *
DOME LAKE 8880 11.4 5.7 200 24.9 19.9 125
GRAVE SPRINGS 8550 -M 2.9 * 17.8 15.5 115
HANSEN SAWMILL 8360 -M .7 * -M 13.4 *
MIDDLE POWDER 7760 9.1 6.0 152 17.5 18.5 95
POWDER RIVER PASS 9480 9.6 4.3 223 23.5 18.8 125
SUCKER CREEK 8880 17.2 6.5 265 27.6 20.8 133
TIE CREEK 6870 .2 .0 21.1 16.5 128
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Basin wide percent of average 188 124
BELLE FOURCHE
BLIND PARK 6890 -M .0 * 17.9 17.1 105
COLE CANYON 5910 .0 .0 100 16.2 12.2 133
NORTH RAPID CREEK 6130 -M .0 * 19.0 13.5 141
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Basin wide percent of average * 124
UPPER N. PLATTE RIVER
COLUMBINE 9160 12.7 5.8 219 35.1 31.7 111
DIVIDE PEAK 8880 13.2 7.0 189 30.0 26.9 112
ELK RIVER 8700 7.2 3.1 232 29.3 25.4 115
JOE WRIGHT 10120 25.2 20.6 122 37.6 34.0 111
NORTH FRENCH CREEK 10130 29.5 28.7 103 38.3 33.4 115
OLD BATTLE 10000 36.1 30.5 118 48.9 43.5 112
SAGE CREEK BASIN 7850 .0 4.1 0 21.2 15.6 136
SOUTH BRUSH CREEK 8440 .1 3.3 3 22.4 23.0 97
TOWER 10500 46.6 47.6 98 51.5 49.1 105
WEBBER SPRINGS 9250 17.1 11.1 154 38.3 34.0 113
WILLOW CREEK PASS 9540 17.7 6.4 277 21.8 18.1 120
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Basin wide percent of average 122 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.1 16.6 97 29.6 30.4 97
CASPER MTN. 7900 11.1 6.8 163 25.2 23.2 109
DEADMAN HILL 10220 20.2 14.6 138 27.1 24.0 113
DEER PARK 9700 14.3 13.2 108 27.4 30.1 91
LAPRELE CREEK 8375 .9 1.7 53 20.2 19.4 104
RENO HILL 8400 12.8 5.6 229 29.0 23.9 121
ROACH 9700 15.8 8.9 178 29.1 25.6 114
SAND LAKE 10050 33.2 30.9 107 39.6 33.4 119
SOUTH PASS 9040 9.2 9.2 100 24.0 25.4 94
WINDY PEAK 7900 .8 .5 160 18.3 16.3 112
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Basin wide percent of average 124 107
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.5 104
DIVIDE PEAK 8880 13.2 7.0 189 30.0 26.9 112
OLD BATTLE 10000 36.1 30.5 118 48.9 43.5 112
SANDSTONE RS 8150 .6 1.1 55 26.6 24.3 109
WHISKEY PARK 8950 -M 19.7 * 44.2 37.1 119
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Basin wide percent of average 129 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.6 4.7 55 17.8 18.0 99
BLIND BULL SUM 8650 24.5 21.3 115 22.2 27.5 81
EAST RIM DIVIDE 7930 .5 4.9 10 14.5 15.6 93
ELKHART PARK G.S. 9400 2.9 6.0 48 15.0 18.4 82
GROS VENTRE SUMMIT 8750 4.8 6.4 75 18.0 17.1 105
GUNSIGHT PASS 9820 7.8 -M * 19.1 -M *
KENDALL R.S. 7740 .1 .0 17.1 18.2 94
LOOMIS PARK 8240 2.5 5.5 45 22.2 22.0 101
NEW FORK LAKE 8340 .6 .0 12.2 15.4 79
SNIDER BASIN 8060 .0 3.0 0 16.8 20.0 84
SPRING CREEK DIVIDE 9000 16.7 19.5 86 28.5 32.5 88
TRIPLE PEAK 8500 14.9 10.2 146 35.2 31.3 112
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Basin wide percent of average 85 93
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 13.8 16.5 84
HEWINTA 9519 -M 1.6 * 21.6 19.8 109
HICKERSON PARK 9145 .0 .4 0 12.8 12.1 106
HOLE-IN-ROCK 9150 .0 .3 0 13.6 11.7 116
INDIAN CREEK 9425 -M 18.8 * -M 31.9 *
KELLEY R.S. 8180 4.6 4.7 98 22.3 25.7 87
STEEL CREEK PARK 10200 18.3 14.9 123 24.2 22.6 107
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Basin wide percent of average 113 100
UPPER BEAR RIVER
BUG LAKE 7950 8.9 5.5 162 21.4 24.6 87
HAYDEN FORK 9212 .8 3.4 24 29.5 27.8 106
KELLEY R.S. 8180 4.6 4.7 98 22.3 25.7 87
LILY LAKE 9156 2.1 3.1 68 23.2 23.5 99
MONTE CRISTO 8960 18.4 17.0 108 31.7 33.4 95
SALT RIVER SUMMIT 7760 .4 .0 19.8 23.6 84
TRIAL LAKE 9992 13.9 18.5 75 30.0 32.5 92
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Basin wide percent of average 93 93
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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 1961-90.
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.