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: MAY 24 , 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 6.2 2.4 258 32.2 26.4 122
COTTONWOOD CREEK 7670 13.8 9.4 147 30.6 35.0 87
GRAND TARGHEE 9260 54.1 -M * 43.3 -M *
GRANITE CREEK 6770 5.9 4.2 140 26.9 24.3 111
GRASSY LAKE 7265 26.9 20.5 131 51.0 44.0 116
GROS VENTRE SUMMIT 8750 4.9 6.8 72 18.0 17.0 106
GUNSIGHT PASS 9820 7.6 -M * 19.0 -M *
LEWIS LAKE DIVIDE 7850 28.1 23.6 119 43.1 44.5 97
PHILLIPS BENCH 8200 23.1 19.0 122 40.5 35.8 113
SALT RIVER SUMMIT 7760 .6 .5 120 19.8 23.5 84
SNAKE RIVER STATION 6920 2.2 1.1 200 32.5 27.7 117
SPRING CREEK DIVIDE 9000 16.7 20.1 83 28.3 32.5 87
THUMB DIVIDE 7980 6.5 5.7 114 24.8 24.2 102
TOGWOTEE PASS 9580 28.7 25.1 114 36.9 31.9 116
TWO OCEAN PLATEAU 9240 42.2 28.4 149 39.5 35.3 112
WILLOW CREEK 8380 22.8 19.9 115 47.8 41.5 115
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Basin wide percent of average 122 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.0 23.5 119 30.6 26.2 117
BLACK BEAR 8170 44.0 32.1 137 50.6 49.2 103
CANYON 7870 10.3 3.8 271 25.2 19.8 127
FISHER CREEK 9100 44.0 33.2 133 47.5 45.5 104
MADISON PLATEAU 7750 25.6 14.2 180 39.0 33.3 117
NORTHEAST ENTRANCE 7350 .1 1.0 10 18.7 16.8 111
PARKER PEAK 9400 29.4 21.7 135 -M 22.3 *
SYLVAN LAKE 8420 21.5 16.0 134 33.8 27.9 121
THUMB DIVIDE 7980 6.5 5.7 114 24.8 24.2 102
TWO OCEAN PLATEAU 9240 42.2 28.4 149 39.5 35.3 112
WHISKEY CREEK 6800 13.9 5.0 278 30.3 26.5 114
WHITE MILL 8700 28.1 21.7 129 34.2 34.2 100
WOLVERINE 7650 .5 .7 71 19.5 17.6 111
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Basin wide percent of average 142 110
WIND RIVER
BURROUGHS CREEK 8750 10.9 6.7 163 23.2 21.8 106
COLD SPRINGS 9630 1.3 1.5 87 15.8 16.4 96
DEER PARK 9700 13.8 13.8 100 26.9 30.0 90
HOBBS PARK 10100 15.4 13.6 113 21.7 20.1 108
LITTLE WARM 9370 1.7 4.2 40 19.1 19.3 99
SOUTH PASS 9040 8.9 9.5 94 23.6 25.4 93
ST. LAWRENCE ALT 8620 1.7 1.2 142 14.0 14.5 97
TOGWOTEE PASS 9580 28.7 25.1 114 36.9 31.9 116
TOWNSEND CREEK 8700 1.9 3.0 63 18.5 18.1 102
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Basin wide percent of average 107 101
BIGHORN BASIN
BALD MTN. 9380 18.0 20.2 89 22.2 24.5 91
BEAR TRAP MEADOW 8200 1.1 .0 16.9 13.4 126
BLACKWATER 9780 29.7 27.9 106 32.1 27.8 115
BONE SPRINGS DIV 9350 15.9 12.6 126 25.4 21.4 119
EVENING STAR 9200 29.1 29.9 97 42.9 33.2 129
GRAVE SPRINGS 8550 8.2 3.0 273 17.0 15.4 110
KIRWIN 9550 9.7 8.5 114 20.6 16.7 123
MARQUETTE 8760 7.6 6.4 119 18.8 17.0 111
MIDDLE POWDER 7760 8.1 6.3 129 16.5 18.4 90
OWL CREEK 8975 2.2 1.2 183 11.6 10.4 112
POWDER RIVER PASS 9480 8.9 4.6 193 22.7 18.7 121
SHELL CREEK 9580 17.4 13.7 127 22.8 19.6 116
SYLVAN LAKE 8420 21.5 16.0 134 33.8 27.9 121
SYLVAN ROAD 7120 .0 .4 0 26.3 22.6 116
TIMBER CREEK 7950 3.1 1.2 258 16.1 13.5 119
YOUNTS PEAK 8350 13.8 11.3 122 22.7 21.2 107
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Basin wide percent of average 118 115
SHOSHONE RIVER
BLACKWATER 9780 29.7 27.9 106 32.1 27.8 115
EVENING STAR 9200 29.1 29.9 97 42.9 33.2 129
KIRWIN 9550 9.7 8.5 114 20.6 16.7 123
MARQUETTE 8760 7.6 6.4 119 18.8 17.0 111
SYLVAN LAKE 8420 21.5 16.0 134 33.8 27.9 121
SYLVAN ROAD 7120 .0 .4 0 26.3 22.6 116
YOUNTS PEAK 8350 13.8 11.3 122 22.7 21.2 107
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Basin wide percent of average 111 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.1 .0 16.9 13.4 126
BIG GOOSE 7990 8.3 6.6 126 -M 15.7 *
BONE SPRINGS DIV 9350 15.9 12.6 126 25.4 21.4 119
BURGESS JUNCTION 7880 13.9 6.4 217 22.4 17.9 125
CLOUD PEAK RESERVOIR 9860 20.1 11.5 175 -M 20.6 *
DOME LAKE 8880 10.8 6.2 174 24.3 19.8 123
GRAVE SPRINGS 8550 8.2 3.0 273 17.0 15.4 110
HANSEN SAWMILL 8360 -M .8 * -M 13.3 *
MIDDLE POWDER 7760 8.1 6.3 129 16.5 18.4 90
POWDER RIVER PASS 9480 8.9 4.6 193 22.7 18.7 121
SUCKER CREEK 8880 16.8 6.8 247 27.0 20.6 131
TIE CREEK 6870 .3 .0 20.5 16.4 125
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Basin wide percent of average 173 119
BELLE FOURCHE
BLIND PARK 6890 -M .0 * 17.3 17.0 102
COLE CANYON 5910 .0 .0 100 15.3 12.1 126
NORTH RAPID CREEK 6130 .1 .0 18.5 13.4 138
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Basin wide percent of average * 120
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.0 6.5 200 35.1 31.6 111
DIVIDE PEAK 8880 13.4 7.6 176 29.9 26.8 112
ELK RIVER 8700 7.0 3.4 206 28.9 25.3 114
JOE WRIGHT 10120 25.3 21.0 120 37.5 33.8 111
NORTH FRENCH CREEK 10130 29.4 29.3 100 38.2 33.3 115
OLD BATTLE 10000 35.8 31.1 115 48.6 43.3 112
SAGE CREEK BASIN 7850 .0 4.4 0 21.1 15.5 136
SOUTH BRUSH CREEK 8440 .1 3.6 3 22.3 22.9 97
TOWER 10500 46.7 48.2 97 51.4 49.0 105
WEBBER SPRINGS 9250 17.2 11.8 146 38.1 34.0 112
WILLOW CREEK PASS 9540 17.8 6.9 258 21.7 18.0 121
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Basin wide percent of average 118 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.1 17.3 93 29.4 30.3 97
CASPER MTN. 7900 10.1 7.2 140 23.7 23.1 103
DEADMAN HILL 10220 20.3 15.0 135 27.1 23.9 113
DEER PARK 9700 13.8 13.8 100 26.9 30.0 90
LAPRELE CREEK 8375 .0 1.8 0 19.1 19.3 99
RENO HILL 8400 12.2 6.0 203 28.0 23.8 118
ROACH 9700 16.0 9.3 172 29.0 25.5 114
SAND LAKE 10050 33.1 31.6 105 39.6 33.2 119
SOUTH PASS 9040 8.9 9.5 94 23.6 25.4 93
WINDY PEAK 7900 1.0 .6 167 18.0 16.2 111
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Basin wide percent of average 117 105
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.5 104
DIVIDE PEAK 8880 13.4 7.6 176 29.9 26.8 112
OLD BATTLE 10000 35.8 31.1 115 48.6 43.3 112
SANDSTONE RS 8150 1.2 1.3 92 26.5 24.2 110
WHISKEY PARK 8950 -M 20.5 * 44.1 37.0 119
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Basin wide percent of average 126 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.1 5.2 40 17.3 18.0 96
BLIND BULL SUM 8650 24.5 21.7 113 22.1 27.4 81
EAST RIM DIVIDE 7930 .7 5.3 13 14.4 15.5 93
ELKHART PARK G.S. 9400 2.7 6.4 42 14.9 18.3 81
GROS VENTRE SUMMIT 8750 4.9 6.8 72 18.0 17.0 106
GUNSIGHT PASS 9820 7.6 -M * 19.0 -M *
KENDALL R.S. 7740 .1 .0 16.8 18.1 93
LOOMIS PARK 8240 2.6 5.9 44 22.0 21.9 100
NEW FORK LAKE 8340 .8 .4 200 12.1 15.3 79
SNIDER BASIN 8060 .2 3.5 6 16.8 20.0 84
SPRING CREEK DIVIDE 9000 16.7 20.1 83 28.3 32.5 87
TRIPLE PEAK 8500 14.9 11.0 135 35.0 31.2 112
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Basin wide percent of average 81 93
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 13.8 16.5 84
HEWINTA 9519 .0 1.8 0 21.6 19.7 110
HICKERSON PARK 9145 .0 .5 0 12.8 12.0 107
HOLE-IN-ROCK 9150 .7 .4 175 13.6 11.6 117
INDIAN CREEK 9425 -M 19.3 * -M 31.8 *
KELLEY R.S. 8180 4.7 5.2 90 22.2 25.6 87
STEEL CREEK PARK 10200 18.2 15.3 119 24.2 22.5 108
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Basin wide percent of average 102 100
UPPER BEAR RIVER
BUG LAKE 7950 9.5 6.0 158 21.2 24.5 87
HAYDEN FORK 9212 1.4 3.7 38 29.4 27.7 106
KELLEY R.S. 8180 4.7 5.2 90 22.2 25.6 87
LILY LAKE 9156 2.3 3.4 68 23.0 23.4 98
MONTE CRISTO 8960 18.6 17.6 106 31.7 33.3 95
SALT RIVER SUMMIT 7760 .6 .5 120 19.8 23.5 84
TRIAL LAKE 9992 13.8 19.0 73 29.9 32.4 92
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Basin wide percent of average 92 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.