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 MONDAY: FEBRUARY 17 , 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 25.7 14.3 180 27.5 18.5 149
COTTONWOOD CREEK 7600 25.2 16.7 151 26.4 20.2 131
GRANITE CREEK 6770 26.0 14.1 184 22.3 19.4 115
GRASSY LAKE 7265 39.8 29.8 134 38.6 29.9 129
GROS VENTRE SUMMIT 8775 18.6 11.9 156 17.5 13.1 134
LEWIS LAKE DIVIDE 7860 47.1 26.8 176 -M 30.4 *
PHILLIPS BENCH 8200 34.7 22.3 156 -M 24.0 *
SALT RIVER SUMMIT 7600 19.3 10.8 179 20.8 13.9 150
SNAKE RIVER STATION 6920 24.7 14.7 168 31.6 21.0 150
SPRING CREEK DIVIDE 9000 31.8 21.1 151 -M 22.1 *
THUMB DIVIDE 7980 27.5 13.1 210 -M 17.3 *
TOGWOTEE PASS 9580 29.3 19.2 153 -M 22.7 *
TWO OCEAN PLATEAU 9360 37.6 20.7 182 -M 25.5 *
WILLOW CREEK 8450 34.6 24.1 144 35.7 26.1 137
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Basin wide percent of average 163 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.6 18.3 167 -M 13.8 *
BLACK BEAR 7950 -M 28.8 * -M 30.6 *
CANYON 7940 20.3 9.7 209 22.7 11.2 203
FISHER CREEK 9100 47.2 27.7 170 -M 28.1 *
MADISON PLATEAU 7750 34.0 18.8 181 34.7 19.9 174
NORTHEAST ENTRANCE 7350 10.8 7.4 146 16.9 9.4 180
PARKER PEAK 9400 26.3 16.5 159 -M 12.0 *
SYLVAN LAKE 8420 27.1 17.0 159 -M 15.0 *
THUMB DIVIDE 7980 27.5 13.1 210 -M 17.3 *
TWO OCEAN PLATEAU 9360 37.6 20.7 182 -M 25.5 *
WHISKEY CREEK 6800 21.2 13.0 163 -M 16.5 *
WHITE MILL 8700 32.6 19.6 166 -M 21.9 *
WOLVERINE 7650 13.7 9.2 149 13.2 10.1 131
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Basin wide percent of average 172 173*
WIND RIVER
BURROUGHS CREEK 8750 20.8 12.1 172 -M 12.8 *
CHRISTINA LAKE 9980 17.9 11.7 153 19.5 12.3 159
COLD SPRINGS 9630 8.8 6.5 135 9.7 7.8 124
HOBBS PARK 10100 14.5 11.2 129 11.3 10.3 110
LITTLE WARM 9620 14.9 8.3 180 15.9 10.0 159
SOUTH PASS 9040 23.0 12.9 178 21.6 12.5 173
ST. LAWRENCE ALT 8620 7.5 5.6 134 8.9 7.3 122
TOGWOTEE PASS 9580 29.3 19.2 153 -M 22.7 *
TOWNSEND CREEK 8700 8.7 7.2 121 9.7 8.9 109
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Basin wide percent of average 154 140
BIGHORN BASIN
BALD MTN. 9375 18.1 15.7 115 14.9 13.1 114
BEAR TRAP MEADOW 7900 6.5 5.5 118 7.2 5.9 122
BLACKWATER 9780 31.8 16.3 195 24.0 13.9 173
BONE SPRINGS DIV 9350 15.3 12.2 125 13.7 10.7 128
EVENING STAR 9200 35.6 20.7 172 -M 17.4 *
GRAVE SPRINGS 8550 9.4 -M * 9.0 7.0 129
KIRWIN 9550 12.9 7.4 174 14.3 7.8 183
LOST CREEK 8080 11.8 9.5 124 12.1 8.6 141
MARQUETTE 8760 8.7 6.0 145 8.9 6.5 137
MIDDLE POWDER 7760 11.9 8.8 135 11.1 8.6 129
OWL CREEK 8975 6.3 3.3 191 5.3 4.4 120
POWDER RIVER PASS 9480 11.3 8.0 141 10.8 8.7 124
SHELL CREEK 9580 14.6 11.7 125 12.1 9.9 122
SYLVAN LAKE 8420 27.1 17.0 159 -M 15.0 *
SYLVAN ROAD 8120 18.0 10.1 178 23.8 12.5 190
TIMBER CREEK 7950 5.5 4.4 125 6.1 4.7 130
YOUNTS PEAK 8350 19.9 13.7 145 -M 12.8 *
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Basin wide percent of average 150 142
SHOSHONE RIVER
BLACKWATER 9780 31.8 16.3 195 24.0 13.9 173
EVENING STAR 9200 35.6 20.7 172 -M 17.4 *
KIRWIN 9550 12.9 7.4 174 14.3 7.8 183
MARQUETTE 8760 8.7 6.0 145 8.9 6.5 137
SYLVAN LAKE 8420 27.1 17.0 159 -M 15.0 *
SYLVAN ROAD 8120 18.0 10.1 178 23.8 12.5 190
YOUNTS PEAK 8350 19.9 13.7 145 -M 12.8 *
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Basin wide percent of average 169 174
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.5 5.5 118 7.2 5.9 122
BONE SPRINGS DIV 9350 15.3 12.2 125 13.7 10.7 128
BURGESS JUNCTION 7880 10.3 8.8 117 10.6 8.0 132
CLOUD PEAK RESERVOIR 9860 14.3 9.8 146 11.6 9.4 123
DOME LAKE 8880 9.9 10.3 96 11.0 9.7 113
GRAVE SPRINGS 8550 9.4 -M * 9.0 7.0 129
HANSEN SAWMILL 8760 5.9 5.3 111 6.1 5.6 109
LOST CREEK 8080 11.8 9.5 124 12.1 8.6 141
MIDDLE POWDER 7760 11.9 8.8 135 11.1 8.6 129
POWDER RIVER PASS 9480 11.3 8.0 141 10.8 8.7 124
SUCKER CREEK 8880 11.7 8.8 133 11.7 9.7 121
TIE CREEK 6870 7.1 -M * 9.5 7.6 125
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Basin wide percent of average 125 125
BELLE FOURCHE
BLIND PARK 6890 9.3 8.3 112 13.4 7.0 191
NORTH RAPID CREEK 6130 9.9 -M * 12.1 -M *
WARREN PEAK 6520 15.6 8.3 188 -M 5.8 *
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Basin wide percent of average 150 191*
UPPER N. PLATTE RIVER
COLUMBINE 9400 26.9 18.8 143 26.6 18.7 142
DIVIDE PEAK 8800 21.0 15.3 137 20.8 17.6 118
ELK RIVER 8700 24.6 15.1 163 21.9 14.2 154
JOE WRIGHT 10120 19.8 16.0 124 24.6 18.6 132
NORTH FRENCH CREEK 10100 30.3 18.5 164 25.3 17.3 146
OLD BATTLE 10000 33.9 23.8 142 28.3 22.3 127
SOUTH BRUSH CREEK 8400 13.6 8.4 162 15.3 12.0 128
TOWER 10500 48.5 34.3 141 36.0 27.5 131
WEBBER SPRINGS 9200 27.1 20.3 133 30.8 18.9 163
WILLOW CREEK PASS 9540 15.4 8.4 183 12.6 9.0 140
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Basin wide percent of average 146 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 29.2 18.2 160 22.5 14.0 161
CASPER MTN. 7900 16.5 11.0 150 15.7 9.9 159
CHRISTINA LAKE 9980 17.9 11.7 153 19.5 12.3 159
DEADMAN HILL 10220 13.5 12.6 107 14.9 11.8 126
LAPRELE CREEK 8320 12.9 7.6 170 12.2 8.5 144
RENO HILL 8400 18.1 9.7 187 15.6 13.2 118
ROACH 9700 18.4 12.7 145 19.0 16.0 119
SAND LAKE 10080 31.0 24.5 127 24.6 15.0 164
SOUTH PASS 9040 23.0 12.9 178 21.6 12.5 173
WINDY PEAK 7840 8.7 5.4 161 10.2 6.6 155
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Basin wide percent of average 150 147
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.4 8.7 177 16.0 11.9 134
DIVIDE PEAK 8800 21.0 15.3 137 20.8 17.6 118
OLD BATTLE 10000 33.9 23.8 142 28.3 22.3 127
SANDSTONE RS 8150 18.0 11.0 164 19.9 14.5 137
WHISKEY PARK 8950 33.6 21.4 157 28.3 21.4 132
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Basin wide percent of average 152 129
UPPER GREEN RIVER
BIG SANDY OPENING 9100 16.6 10.9 152 15.1 13.4 113
BLIND BULL SUM 8650 35.7 22.2 161 -M 19.2 *
EAST RIM DIVIDE 7930 14.6 10.8 135 15.1 12.5 121
ELKHART PARK G.S. 9400 16.1 10.5 153 16.0 13.2 121
GROS VENTRE SUMMIT 8775 18.6 11.9 156 17.5 13.1 134
KENDALL R.S. 7740 20.7 11.4 182 17.6 12.8 138
LOOMIS PARK 8240 -M 13.6 * 19.5 15.5 126
NEW FORK LAKE 8340 13.1 9.0 146 12.0 11.9 101
SNIDER BASIN 8250 20.5 11.5 178 17.5 12.5 140
SPRING CREEK DIVIDE 9000 31.8 21.1 151 -M 22.1 *
TRIPLE PEAK 8500 30.4 20.0 152 32.5 25.7 126
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Basin wide percent of average 157 125
LOWER GREEN RIVER
HAMS FORK 7840 15.4 9.6 160 13.4 11.0 122
HEWINTA 9500 11.1 7.5 148 11.7 9.4 124
HICKERSON PARK 9150 5.9 4.4 134 7.5 6.7 112
HOLE-IN-ROCK 9150 6.8 4.0 170 7.8 6.7 116
INDIAN CREEK 9425 34.9 20.9 167 -M 20.7 *
KELLEY R.S. 8180 21.4 12.8 167 24.4 15.5 157
STEEL CREEK PARK 10100 13.4 11.1 121 13.1 9.6 136
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Basin wide percent of average 155 132
UPPER BEAR RIVER
BUG LAKE 7950 28.1 15.1 186 26.2 14.6 179
HAYDEN FORK 9400 17.8 12.2 146 22.3 13.8 162
KELLEY R.S. 8180 21.4 12.8 167 24.4 15.5 157
LILY LAKE 9050 15.1 9.7 156 16.6 10.8 154
MONTE CRISTO 8960 35.7 20.4 175 29.2 19.0 154
SALT RIVER SUMMIT 7600 19.3 10.8 179 20.8 13.9 150
TRIAL LAKE 9960 32.4 18.6 174 31.6 17.8 178
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Basin wide percent of average 170 162
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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.