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: JANUARY 21 , 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 18.6 10.9 171 23.1 14.5 159
COTTONWOOD CREEK 7600 20.3 12.4 164 22.4 15.4 145
GRANITE CREEK 6770 20.7 10.7 193 22.5 15.3 147
GRASSY LAKE 7265 -M 20.1 * -M 23.5 *
GROS VENTRE SUMMIT 8775 15.5 9.4 165 13.2 10.3 128
LEWIS LAKE DIVIDE 7860 37.3 19.8 188 36.1 23.9 151
PHILLIPS BENCH 8200 27.6 16.7 165 27.8 18.8 148
SALT RIVER SUMMIT 7600 15.2 7.7 197 16.9 11.0 154
SNAKE RIVER STATION 6920 16.4 10.8 152 23.6 16.5 143
SPRING CREEK DIVIDE 9000 26.3 15.9 165 20.1 17.2 117
THUMB DIVIDE 7980 23.4 10.0 234 21.0 13.6 154
TOGWOTEE PASS 9580 23.8 15.0 159 21.7 17.9 121
TWO OCEAN PLATEAU 9360 31.0 16.4 189 29.0 20.0 145
WILLOW CREEK 8450 29.0 18.3 158 30.3 20.2 150
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Basin wide percent of average 175 143
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 24.9 14.5 172 20.6 10.8 191
BLACK BEAR 7950 43.8 21.5 204 -M 23.2 *
CANYON 7940 16.4 7.3 225 17.7 8.8 201
FISHER CREEK 9100 40.0 21.4 187 35.8 21.5 167
MADISON PLATEAU 7750 28.0 14.1 199 -M 15.3 *
NORTHEAST ENTRANCE 7350 7.9 5.6 141 13.9 7.4 188
PARKER PEAK 9400 22.0 13.1 168 15.2 9.5 160
SYLVAN LAKE 8420 21.8 13.5 161 19.9 12.0 166
THUMB DIVIDE 7980 23.4 10.0 234 21.0 13.6 154
TWO OCEAN PLATEAU 9360 31.0 16.4 189 29.0 20.0 145
WHISKEY CREEK 6800 16.7 9.8 170 23.3 12.7 183
WHITE MILL 8700 27.0 15.1 179 -M 17.0 *
WOLVERINE 7650 10.6 7.0 151 11.0 7.9 139
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Basin wide percent of average 185 167
WIND RIVER
BURROUGHS CREEK 8750 17.3 9.3 186 16.9 10.2 166
CHRISTINA LAKE 9980 14.7 9.4 156 17.1 10.0 171
COLD SPRINGS 9630 7.2 5.3 136 7.9 6.4 123
HOBBS PARK 10100 12.2 9.3 131 9.5 8.4 113
LITTLE WARM 9620 12.6 6.5 194 13.7 8.1 169
SOUTH PASS 9040 -M 10.3 * 18.4 9.8 188
ST. LAWRENCE ALT 8620 5.7 4.3 133 6.7 5.8 116
TOGWOTEE PASS 9580 23.8 15.0 159 21.7 17.9 121
TOWNSEND CREEK 8700 7.2 5.6 129 8.4 7.1 118
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Basin wide percent of average 156 144
BIGHORN BASIN
BALD MTN. 9375 14.2 12.6 113 11.6 10.6 109
BEAR TRAP MEADOW 7900 5.2 4.4 118 5.5 5.0 110
BLACKWATER 9780 25.8 12.6 205 19.0 11.0 173
BONE SPRINGS DIV 9350 11.8 9.7 122 10.7 8.5 126
EVENING STAR 9200 28.4 16.2 175 -M 13.7 *
GRAVE SPRINGS 8550 8.6 -M * 8.3 5.9 141
KIRWIN 9550 10.9 6.1 179 12.0 6.2 194
LOST CREEK 8080 10.3 7.3 141 11.0 7.0 157
MARQUETTE 8760 7.1 4.7 151 7.5 5.4 139
MIDDLE POWDER 7760 10.9 7.2 151 10.1 7.2 140
OWL CREEK 8975 -M 2.5 * 4.3 3.4 126
POWDER RIVER PASS 9480 7.3 6.4 114 8.1 7.0 116
SHELL CREEK 9580 11.2 9.4 119 8.8 8.0 110
SYLVAN LAKE 8420 21.8 13.5 161 19.9 12.0 166
SYLVAN ROAD 8120 13.5 7.5 180 19.4 10.0 194
TIMBER CREEK 7950 4.1 3.2 128 4.6 3.9 118
YOUNTS PEAK 8350 15.6 11.1 141 19.3 10.1 191
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Basin wide percent of average 150 149
SHOSHONE RIVER
BLACKWATER 9780 25.8 12.6 205 19.0 11.0 173
EVENING STAR 9200 28.4 16.2 175 -M 13.7 *
KIRWIN 9550 10.9 6.1 179 12.0 6.2 194
MARQUETTE 8760 7.1 4.7 151 7.5 5.4 139
SYLVAN LAKE 8420 21.8 13.5 161 19.9 12.0 166
SYLVAN ROAD 8120 13.5 7.5 180 19.4 10.0 194
YOUNTS PEAK 8350 15.6 11.1 141 19.3 10.1 191
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Basin wide percent of average 172 178
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.2 4.4 118 5.5 5.0 110
BONE SPRINGS DIV 9350 11.8 9.7 122 10.7 8.5 126
BURGESS JUNCTION 7880 8.5 6.9 123 8.7 6.6 132
CLOUD PEAK RESERVOIR 9860 12.2 7.2 169 9.9 7.4 134
DOME LAKE 8880 8.0 8.1 99 8.8 8.1 109
GRAVE SPRINGS 8550 8.6 -M * 8.3 5.9 141
HANSEN SAWMILL 8760 4.6 4.1 112 5.3 4.6 115
LOST CREEK 8080 10.3 7.3 141 11.0 7.0 157
MIDDLE POWDER 7760 10.9 7.2 151 10.1 7.2 140
POWDER RIVER PASS 9480 7.3 6.4 114 8.1 7.0 116
SUCKER CREEK 8880 9.7 6.7 145 9.8 7.9 124
TIE CREEK 6870 5.6 -M * 7.9 6.3 125
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Basin wide percent of average 130 128
BELLE FOURCHE
BLIND PARK 6890 7.6 6.6 115 11.9 5.6 213
NORTH RAPID CREEK 6130 8.0 -M * 10.4 -M *
WARREN PEAK 6520 13.3 6.6 202 -M 4.7 *
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Basin wide percent of average 158 213*
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.5 13.9 112 22.5 14.4 156
DIVIDE PEAK 8800 17.1 12.1 141 17.6 14.6 121
ELK RIVER 8700 19.4 11.0 176 18.7 11.2 167
JOE WRIGHT 10120 17.0 12.8 133 21.2 14.8 143
NORTH FRENCH CREEK 10100 23.4 14.4 163 21.5 13.6 158
OLD BATTLE 10000 28.9 18.5 156 27.0 17.6 153
SOUTH BRUSH CREEK 8400 -M 6.3 * 12.9 10.4 124
TOWER 10500 -M 26.5 * -M 21.5 *
WEBBER SPRINGS 9200 21.6 15.7 138 25.2 15.4 164
WILLOW CREEK PASS 9540 13.1 6.8 193 10.7 7.2 149
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Basin wide percent of average 148 149
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 23.2 14.7 158 -M 10.9 *
CASPER MTN. 7900 13.1 8.6 152 13.0 8.1 160
CHRISTINA LAKE 9980 14.7 9.4 156 17.1 10.0 171
DEADMAN HILL 10220 10.8 10.1 107 12.1 9.3 130
LAPRELE CREEK 8320 10.3 6.0 172 9.8 6.7 146
RENO HILL 8400 11.5 7.7 149 12.6 10.8 117
ROACH 9700 15.2 9.9 154 15.8 12.8 123
SAND LAKE 10080 24.7 19.1 129 19.6 11.7 168
SOUTH PASS 9040 -M 10.3 * 18.4 9.8 188
WINDY PEAK 7840 6.7 4.0 168 8.4 5.3 158
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Basin wide percent of average 145 150
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.9 6.5 183 13.6 9.7 140
DIVIDE PEAK 8800 17.1 12.1 141 17.6 14.6 121
OLD BATTLE 10000 28.9 18.5 156 27.0 17.6 153
SANDSTONE RS 8150 14.1 8.3 170 16.4 11.8 139
WHISKEY PARK 8950 24.8 16.5 150 20.9 17.1 122
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Basin wide percent of average 156 135
UPPER GREEN RIVER
BIG SANDY OPENING 9100 14.2 8.4 169 13.1 10.6 124
BLIND BULL SUM 8650 28.4 16.9 168 20.5 14.7 139
EAST RIM DIVIDE 7930 11.8 8.1 146 12.6 9.9 127
ELKHART PARK G.S. 9400 14.1 7.9 178 14.3 10.4 138
GROS VENTRE SUMMIT 8775 15.5 9.4 165 13.2 10.3 128
KENDALL R.S. 7740 17.1 8.7 197 17.8 10.1 176
LOOMIS PARK 8240 17.5 10.1 173 17.8 12.3 145
NEW FORK LAKE 8340 11.1 6.8 163 10.4 9.4 111
SNIDER BASIN 8250 16.0 8.6 186 14.2 9.9 143
SPRING CREEK DIVIDE 9000 26.3 15.9 165 20.1 17.2 117
TRIPLE PEAK 8500 24.4 15.2 161 26.3 20.2 130
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Basin wide percent of average 169 134
LOWER GREEN RIVER
HAMS FORK 7840 12.3 6.9 178 11.1 8.7 128
HEWINTA 9500 9.0 5.5 164 9.7 7.7 126
HICKERSON PARK 9150 5.4 3.2 169 6.4 5.6 114
HOLE-IN-ROCK 9150 5.8 2.9 200 6.8 5.6 121
INDIAN CREEK 9425 28.3 15.9 178 19.9 16.3 122
KELLEY R.S. 8180 17.9 9.3 192 21.5 12.2 176
STEEL CREEK PARK 10100 11.0 9.0 122 10.8 8.0 135
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Basin wide percent of average 170 134
UPPER BEAR RIVER
BUG LAKE 7950 21.6 11.6 186 21.8 11.6 188
HAYDEN FORK 9400 13.9 9.2 151 18.3 10.8 169
KELLEY R.S. 8180 17.9 9.3 192 21.5 12.2 176
LILY LAKE 9050 12.6 7.5 168 14.0 8.7 161
MONTE CRISTO 8960 28.4 15.4 184 23.8 15.0 159
SALT RIVER SUMMIT 7600 15.2 7.7 197 16.9 11.0 154
TRIAL LAKE 9960 24.7 14.4 172 -M 13.7 *
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Basin wide percent of average 179 168
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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.