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: JANUARY 18 , 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 18.5 10.5 176 23.2 14.0 166
COTTONWOOD CREEK 7600 20.3 11.9 171 22.4 14.9 150
GRANITE CREEK 6770 20.3 10.2 199 22.6 14.8 153
GRASSY LAKE 7265 -M 19.3 * -M 22.7 *
GROS VENTRE SUMMIT 8775 15.3 9.0 170 13.1 10.0 131
LEWIS LAKE DIVIDE 7860 36.3 19.0 191 35.7 23.1 155
PHILLIPS BENCH 8200 27.6 16.0 173 27.8 18.1 154
SALT RIVER SUMMIT 7600 15.2 7.4 205 16.7 10.6 158
SNAKE RIVER STATION 6920 16.2 10.4 156 23.4 16.0 146
SPRING CREEK DIVIDE 9000 25.6 15.3 167 20.1 16.6 121
THUMB DIVIDE 7980 22.9 9.7 236 21.0 13.1 160
TOGWOTEE PASS 9580 23.4 14.4 163 21.7 17.3 125
TWO OCEAN PLATEAU 9360 30.8 15.8 195 28.8 19.3 149
WILLOW CREEK 8450 28.9 17.5 165 29.8 19.5 153
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Basin wide percent of average 180 148
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 24.6 14.1 174 20.2 10.5 192
BLACK BEAR 7950 45.9 20.6 223 -M 22.3 *
CANYON 7940 16.3 7.1 230 17.3 8.5 204
FISHER CREEK 9100 39.8 20.6 193 35.4 20.7 171
MADISON PLATEAU 7750 27.6 13.5 204 -M 14.8 *
NORTHEAST ENTRANCE 7350 7.9 5.4 146 13.8 7.2 192
PARKER PEAK 9400 21.8 12.7 172 14.9 9.2 162
SYLVAN LAKE 8420 21.8 13.2 165 19.8 11.7 169
THUMB DIVIDE 7980 22.9 9.7 236 21.0 13.1 160
TWO OCEAN PLATEAU 9360 30.8 15.8 195 28.8 19.3 149
WHISKEY CREEK 6800 16.3 9.4 173 23.5 12.3 191
WHITE MILL 8700 26.8 14.6 184 -M 16.4 *
WOLVERINE 7650 10.1 6.7 151 11.0 7.7 143
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Basin wide percent of average 191 171
WIND RIVER
BURROUGHS CREEK 8750 17.1 9.0 190 16.9 9.9 171
CHRISTINA LAKE 9980 14.5 9.1 159 15.9 9.8 162
COLD SPRINGS 9630 -M 5.2 * 7.9 6.3 125
HOBBS PARK 10100 11.9 9.1 131 9.5 8.2 116
LITTLE WARM 9620 12.3 6.3 195 13.7 7.9 173
SOUTH PASS 9040 19.4 10.1 192 18.4 9.5 194
ST. LAWRENCE ALT 8620 5.5 4.1 134 6.7 5.7 118
TOGWOTEE PASS 9580 23.4 14.4 163 21.7 17.3 125
TOWNSEND CREEK 8700 7.2 5.5 131 8.4 6.9 122
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Basin wide percent of average 165 146
BIGHORN BASIN
BALD MTN. 9375 14.1 12.3 115 11.5 10.3 112
BEAR TRAP MEADOW 7900 5.2 4.3 121 6.3 4.9 129
BLACKWATER 9780 25.7 12.3 209 18.9 10.7 177
BONE SPRINGS DIV 9350 11.8 9.4 126 10.5 8.3 127
EVENING STAR 9200 28.2 15.8 178 -M 13.3 *
GRAVE SPRINGS 8550 8.4 -M * 8.2 5.8 141
KIRWIN 9550 11.0 6.0 183 11.9 6.1 195
LOST CREEK 8080 10.1 7.1 142 10.9 6.8 160
MARQUETTE 8760 7.0 4.6 152 7.5 5.3 142
MIDDLE POWDER 7760 10.8 7.0 154 9.9 7.0 141
OWL CREEK 8975 -M 2.5 * 4.4 3.3 133
POWDER RIVER PASS 9480 7.2 6.2 116 8.1 6.8 119
SHELL CREEK 9580 11.1 9.1 122 8.8 7.8 113
SYLVAN LAKE 8420 21.8 13.2 165 19.8 11.7 169
SYLVAN ROAD 8120 13.0 7.3 178 19.3 9.7 199
TIMBER CREEK 7950 4.1 3.1 132 4.6 3.8 121
YOUNTS PEAK 8350 15.5 10.8 144 19.3 9.8 197
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Basin wide percent of average 153 152
SHOSHONE RIVER
BLACKWATER 9780 25.7 12.3 209 18.9 10.7 177
EVENING STAR 9200 28.2 15.8 178 -M 13.3 *
KIRWIN 9550 11.0 6.0 183 11.9 6.1 195
MARQUETTE 8760 7.0 4.6 152 7.5 5.3 142
SYLVAN LAKE 8420 21.8 13.2 165 19.8 11.7 169
SYLVAN ROAD 8120 13.0 7.3 178 19.3 9.7 199
YOUNTS PEAK 8350 15.5 10.8 144 19.3 9.8 197
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Basin wide percent of average 175 181
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.2 4.3 121 6.3 4.9 129
BONE SPRINGS DIV 9350 11.8 9.4 126 10.5 8.3 127
BURGESS JUNCTION 7880 8.4 6.7 125 8.9 6.4 139
CLOUD PEAK RESERVOIR 9860 12.2 6.9 177 9.9 7.2 138
DOME LAKE 8880 8.0 7.8 103 8.8 7.9 111
GRAVE SPRINGS 8550 8.4 -M * 8.2 5.8 141
HANSEN SAWMILL 8760 4.6 4.0 115 5.3 4.5 118
LOST CREEK 8080 10.1 7.1 142 10.9 6.8 160
MIDDLE POWDER 7760 10.8 7.0 154 9.9 7.0 141
POWDER RIVER PASS 9480 7.2 6.2 116 8.1 6.8 119
SUCKER CREEK 8880 9.5 6.4 148 9.6 7.7 125
TIE CREEK 6870 5.6 -M * 7.9 6.2 127
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Basin wide percent of average 133 131
BELLE FOURCHE
BLIND PARK 6890 7.5 6.4 117 11.8 5.5 215
NORTH RAPID CREEK 6130 7.4 -M * 10.2 -M *
WARREN PEAK 6520 13.4 6.4 209 -M 4.6 *
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Basin wide percent of average 163 215*
UPPER N. PLATTE RIVER
COLUMBINE 9400 16.3 13.3 123 22.2 13.9 160
DIVIDE PEAK 8800 17.0 11.7 145 17.2 14.2 121
ELK RIVER 8700 19.3 10.6 182 18.4 10.8 170
JOE WRIGHT 10120 17.0 12.4 137 21.1 14.3 148
NORTH FRENCH CREEK 10100 23.2 14.0 166 21.3 13.2 161
OLD BATTLE 10000 28.8 17.9 161 26.9 17.1 157
SOUTH BRUSH CREEK 8400 -M 6.1 * 12.6 10.3 122
TOWER 10500 40.6 25.6 159 29.2 20.8 140
WEBBER SPRINGS 9200 21.5 15.2 141 25.1 15.1 166
WILLOW CREEK PASS 9540 13.1 6.6 198 10.4 7.0 149
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Basin wide percent of average 155 150
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 23.1 14.4 160 -M 10.5 *
CASPER MTN. 7900 13.0 8.4 155 12.7 7.9 161
CHRISTINA LAKE 9980 14.5 9.1 159 15.9 9.8 162
DEADMAN HILL 10220 10.8 9.8 110 12.0 9.0 133
LAPRELE CREEK 8320 10.3 5.8 178 9.6 6.5 148
RENO HILL 8400 11.4 7.5 152 12.6 10.6 119
ROACH 9700 15.4 9.6 160 15.7 12.4 127
SAND LAKE 10080 24.6 18.6 132 19.4 11.4 170
SOUTH PASS 9040 19.4 10.1 192 18.4 9.5 194
WINDY PEAK 7840 6.6 3.8 174 8.1 5.1 159
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Basin wide percent of average 154 151
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.8 6.3 187 13.3 9.4 141
DIVIDE PEAK 8800 17.0 11.7 145 17.2 14.2 121
OLD BATTLE 10000 28.8 17.9 161 26.9 17.1 157
SANDSTONE RS 8150 14.0 8.0 175 16.3 11.4 143
WHISKEY PARK 8950 -M 16.0 * -M 16.3 *
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Basin wide percent of average 163 141
UPPER GREEN RIVER
BIG SANDY OPENING 9100 13.9 8.1 172 13.1 10.2 128
BLIND BULL SUM 8650 28.1 16.4 171 20.5 14.1 145
EAST RIM DIVIDE 7930 11.6 7.7 151 12.5 9.5 132
ELKHART PARK G.S. 9400 14.0 7.7 182 13.6 10.0 136
GROS VENTRE SUMMIT 8775 15.3 9.0 170 13.1 10.0 131
KENDALL R.S. 7740 16.9 8.4 201 17.7 9.7 182
LOOMIS PARK 8240 16.4 9.7 169 17.8 11.9 150
NEW FORK LAKE 8340 11.1 6.5 171 10.3 9.1 113
SNIDER BASIN 8250 15.9 8.3 192 14.1 9.5 148
SPRING CREEK DIVIDE 9000 25.6 15.3 167 20.1 16.6 121
TRIPLE PEAK 8500 24.5 14.6 168 26.2 19.5 134
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Basin wide percent of average 173 138
LOWER GREEN RIVER
HAMS FORK 7840 12.3 6.6 186 11.1 8.4 132
HEWINTA 9500 9.1 5.3 172 9.6 7.5 128
HICKERSON PARK 9150 5.8 3.1 187 6.4 5.5 116
HOLE-IN-ROCK 9150 5.9 2.8 211 6.8 5.5 124
INDIAN CREEK 9425 27.9 15.3 182 19.7 15.7 125
KELLEY R.S. 8180 17.9 9.0 199 20.9 11.8 177
STEEL CREEK PARK 10100 11.0 8.7 126 10.9 7.8 140
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Basin wide percent of average 177 137
UPPER BEAR RIVER
BUG LAKE 7950 21.6 11.3 191 21.7 11.3 192
HAYDEN FORK 9400 13.6 9.0 151 18.1 10.5 172
KELLEY R.S. 8180 17.9 9.0 199 20.9 11.8 177
LILY LAKE 9050 12.7 7.4 172 13.9 8.5 164
MONTE CRISTO 8960 28.3 14.8 191 23.4 14.6 160
SALT RIVER SUMMIT 7600 15.2 7.4 205 16.7 10.6 158
TRIAL LAKE 9960 24.4 14.0 174 -M 13.3 *
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Basin wide percent of average 183 170
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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.