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: FEBRUARY 25 , 1997
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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 26.3 15.2 173 27.5 19.6 140
COTTONWOOD CREEK 7600 26.1 17.9 146 27.7 21.6 128
GRANITE CREEK 6770 26.5 15.0 177 22.2 20.5 108
GRASSY LAKE 7265 39.9 29.7 134 38.5 31.6 122
GROS VENTRE SUMMIT 8775 18.8 12.6 149 17.6 13.8 128
LEWIS LAKE DIVIDE 7860 47.2 28.6 165 -M 32.1 *
PHILLIPS BENCH 8200 35.4 23.6 150 39.5 25.4 156
SALT RIVER SUMMIT 7600 19.6 11.7 168 21.1 14.7 144
SNAKE RIVER STATION 6920 25.2 15.7 161 32.2 22.2 145
SPRING CREEK DIVIDE 9000 31.8 22.6 141 -M 23.4 *
THUMB DIVIDE 7980 28.2 13.9 203 -M 18.3 *
TOGWOTEE PASS 9580 29.8 20.3 147 -M 24.0 *
TWO OCEAN PLATEAU 9360 38.3 21.7 176 -M 27.0 *
WILLOW CREEK 8450 33.6 25.2 133 36.5 27.8 131
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Basin wide percent of average 156 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.9 19.4 159 -M 14.7 *
BLACK BEAR 7950 -M 30.7 * -M 32.7 *
CANYON 7940 21.0 10.4 202 23.2 11.8 197
FISHER CREEK 9100 48.5 29.4 165 -M 29.8 *
MADISON PLATEAU 7750 35.5 20.0 178 34.6 21.2 163
NORTHEAST ENTRANCE 7350 11.1 7.9 141 17.3 9.9 175
PARKER PEAK 9400 27.3 17.5 156 -M 12.7 *
SYLVAN LAKE 8420 27.4 18.0 152 -M 15.9 *
THUMB DIVIDE 7980 28.2 13.9 203 -M 18.3 *
TWO OCEAN PLATEAU 9360 38.3 21.7 176 -M 27.0 *
WHISKEY CREEK 6800 21.9 14.0 156 -M 17.5 *
WHITE MILL 8700 33.1 20.7 160 -M 23.2 *
WOLVERINE 7650 13.8 9.8 141 13.7 10.7 128
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Basin wide percent of average 166 166*
WIND RIVER
BURROUGHS CREEK 8750 21.0 12.8 164 -M 13.6 *
CHRISTINA LAKE 9980 17.9 12.4 144 19.5 13.0 150
COLD SPRINGS 9630 8.8 6.8 129 9.8 8.2 120
HOBBS PARK 10100 14.7 11.8 125 11.5 10.9 106
LITTLE WARM 9620 14.8 8.9 166 16.1 10.5 153
SOUTH PASS 9040 23.1 13.6 170 21.8 13.4 163
ST. LAWRENCE ALT 8620 7.8 6.0 130 9.3 7.8 119
TOGWOTEE PASS 9580 29.8 20.3 147 -M 24.0 *
TOWNSEND CREEK 8700 8.7 7.7 113 9.8 9.5 103
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Basin wide percent of average 146 133
BIGHORN BASIN
BALD MTN. 9375 18.7 16.6 113 15.5 13.8 112
BEAR TRAP MEADOW 7900 6.6 5.8 114 7.4 6.2 119
BLACKWATER 9780 32.2 17.4 185 24.4 14.8 165
BONE SPRINGS DIV 9350 15.4 13.0 118 14.0 11.4 123
EVENING STAR 9200 36.2 21.9 165 -M 18.5 *
GRAVE SPRINGS 8550 9.5 -M * 9.1 7.3 125
KIRWIN 9550 12.9 7.9 163 14.3 8.3 172
LOST CREEK 8080 12.0 10.3 117 12.3 9.1 135
MARQUETTE 8760 9.0 6.3 143 9.0 6.9 130
MIDDLE POWDER 7760 12.2 9.4 130 11.2 9.0 124
OWL CREEK 8975 6.4 3.6 178 5.3 4.7 113
POWDER RIVER PASS 9480 11.7 8.5 138 11.3 9.2 123
SHELL CREEK 9580 15.0 12.3 122 12.4 10.4 119
SYLVAN LAKE 8420 27.4 18.0 152 -M 15.9 *
SYLVAN ROAD 8120 18.4 10.8 170 24.3 13.2 184
TIMBER CREEK 7950 5.7 4.7 121 6.3 5.0 126
YOUNTS PEAK 8350 20.1 14.4 140 -M 13.5 *
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Basin wide percent of average 144 137
SHOSHONE RIVER
BLACKWATER 9780 32.2 17.4 185 24.4 14.8 165
EVENING STAR 9200 36.2 21.9 165 -M 18.5 *
KIRWIN 9550 12.9 7.9 163 14.3 8.3 172
MARQUETTE 8760 9.0 6.3 143 9.0 6.9 130
SYLVAN LAKE 8420 27.4 18.0 152 -M 15.9 *
SYLVAN ROAD 8120 18.4 10.8 170 24.3 13.2 184
YOUNTS PEAK 8350 20.1 14.4 140 -M 13.5 *
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Basin wide percent of average 162 167
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.6 5.8 114 7.4 6.2 119
BONE SPRINGS DIV 9350 15.4 13.0 118 14.0 11.4 123
BURGESS JUNCTION 7880 10.4 9.4 111 10.5 8.4 125
CLOUD PEAK RESERVOIR 9860 14.9 10.7 139 12.4 10.0 124
DOME LAKE 8880 9.4 11.0 85 11.7 10.2 115
GRAVE SPRINGS 8550 9.5 -M * 9.1 7.3 125
HANSEN SAWMILL 8760 6.1 5.6 109 6.5 5.9 110
LOST CREEK 8080 12.0 10.3 117 12.3 9.1 135
MIDDLE POWDER 7760 12.2 9.4 130 11.2 9.0 124
POWDER RIVER PASS 9480 11.7 8.5 138 11.3 9.2 123
SUCKER CREEK 8880 12.0 9.4 128 11.8 10.2 116
TIE CREEK 6870 7.1 -M * 9.6 8.0 120
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Basin wide percent of average 119 122
BELLE FOURCHE
BLIND PARK 6890 9.6 8.8 109 13.8 7.4 186
NORTH RAPID CREEK 6130 9.8 -M * 12.2 -M *
WARREN PEAK 6520 15.7 8.8 178 -M 6.1 *
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Basin wide percent of average 144 186*
UPPER N. PLATTE RIVER
COLUMBINE 9400 27.3 20.3 134 26.4 19.9 133
DIVIDE PEAK 8800 21.5 16.3 132 20.8 18.3 114
ELK RIVER 8700 24.9 16.2 154 22.5 15.1 149
JOE WRIGHT 10120 20.4 16.9 121 26.0 19.7 132
NORTH FRENCH CREEK 10100 31.2 19.8 158 25.3 18.4 138
OLD BATTLE 10000 37.9 25.4 149 28.1 23.8 118
SOUTH BRUSH CREEK 8400 13.6 9.1 149 15.6 12.6 124
TOWER 10500 49.4 36.3 136 36.2 29.2 124
WEBBER SPRINGS 9200 27.6 21.6 128 31.5 20.1 157
WILLOW CREEK PASS 9540 16.0 8.9 180 12.5 9.6 130
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Basin wide percent of average 141 131
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 29.8 19.3 154 23.4 15.0 156
CASPER MTN. 7900 17.3 11.9 145 16.2 10.5 154
CHRISTINA LAKE 9980 17.9 12.4 144 19.5 13.0 150
DEADMAN HILL 10220 13.5 13.2 102 15.3 12.6 121
LAPRELE CREEK 8320 12.2 8.1 151 12.5 8.9 140
RENO HILL 8400 18.7 10.4 180 15.9 14.1 113
ROACH 9700 19.3 13.6 142 19.6 16.9 116
SAND LAKE 10080 31.6 26.0 122 25.0 16.0 156
SOUTH PASS 9040 23.1 13.6 170 21.8 13.4 163
WINDY PEAK 7840 9.1 5.9 154 9.9 6.9 143
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Basin wide percent of average 143 141
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.3 9.5 161 16.3 12.4 131
DIVIDE PEAK 8800 21.5 16.3 132 20.8 18.3 114
OLD BATTLE 10000 37.9 25.4 149 28.1 23.8 118
SANDSTONE RS 8150 18.0 11.8 153 20.3 15.1 134
WHISKEY PARK 8950 34.0 22.9 148 29.5 22.1 133
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Basin wide percent of average 147 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 16.8 11.7 144 15.3 14.1 109
BLIND BULL SUM 8650 36.2 23.6 153 -M 20.4 *
EAST RIM DIVIDE 7930 14.7 11.6 127 15.2 13.2 115
ELKHART PARK G.S. 9400 16.3 11.1 147 16.5 13.9 119
GROS VENTRE SUMMIT 8775 18.8 12.6 149 17.6 13.8 128
KENDALL R.S. 7740 21.3 12.1 176 17.2 13.5 127
LOOMIS PARK 8240 -M 14.5 * 19.4 16.4 118
NEW FORK LAKE 8340 13.1 9.6 136 11.8 12.6 94
SNIDER BASIN 8250 20.7 12.4 167 17.5 13.2 133
SPRING CREEK DIVIDE 9000 31.8 22.6 141 -M 23.4 *
TRIPLE PEAK 8500 31.2 21.1 148 32.5 27.2 119
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Basin wide percent of average 149 118
LOWER GREEN RIVER
HAMS FORK 7840 15.4 10.2 151 13.3 11.6 115
HEWINTA 9500 11.7 8.2 143 12.4 9.9 125
HICKERSON PARK 9150 5.5 4.8 115 7.5 7.0 107
HOLE-IN-ROCK 9150 6.6 4.3 153 8.1 7.0 116
INDIAN CREEK 9425 35.2 22.2 159 28.3 21.9 129
KELLEY R.S. 8180 21.5 13.7 157 24.4 16.4 149
STEEL CREEK PARK 10100 13.7 12.1 113 13.3 10.1 132
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Basin wide percent of average 145 128
UPPER BEAR RIVER
BUG LAKE 7950 28.9 16.4 176 26.4 15.5 170
HAYDEN FORK 9400 18.3 13.2 139 22.7 14.7 154
KELLEY R.S. 8180 21.5 13.7 157 24.4 16.4 149
LILY LAKE 9050 15.8 10.3 153 17.3 11.4 152
MONTE CRISTO 8960 36.5 22.5 162 30.0 20.2 149
SALT RIVER SUMMIT 7600 19.6 11.7 168 21.1 14.7 144
TRIAL LAKE 9960 32.8 20.3 162 32.1 19.1 168
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Basin wide percent of average 160 155
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-M = Missing data
* = Data may not provide a valid measure of conditions.
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.