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 WEDNESDAY: JANUARY 1 , 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 17.5 7.9 222 20.0 11.2 179
COTTONWOOD CREEK 7600 16.6 8.8 189 17.9 11.9 150
GRANITE CREEK 6770 19.3 7.2 268 20.8 11.8 176
GRASSY LAKE 7265 26.8 14.3 187 28.1 18.2 154
GROS VENTRE SUMMIT 8775 14.0 6.9 203 12.7 8.0 159
LEWIS LAKE DIVIDE 7860 31.3 13.8 227 33.0 18.5 178
PHILLIPS BENCH 8200 24.9 11.5 217 24.9 14.3 174
SALT RIVER SUMMIT 7600 13.1 5.1 257 14.8 8.5 174
SNAKE RIVER STATION 6920 14.7 7.6 193 19.5 12.8 152
SPRING CREEK DIVIDE 9000 22.1 11.6 191 19.9 13.3 150
THUMB DIVIDE 7980 18.8 7.2 261 18.9 10.5 180
TOGWOTEE PASS 9580 20.1 11.1 181 20.1 13.8 146
TWO OCEAN PLATEAU 9360 26.4 12.6 210 20.3 15.5 131
WILLOW CREEK 8450 24.5 12.8 191 25.7 15.6 165
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Basin wide percent of average 210 161
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 21.7 11.5 189 18.3 8.5 215
BLACK BEAR 7950 38.6 15.6 247 19.9 17.2 116
CANYON 7940 14.4 5.3 272 16.2 6.9 235
FISHER CREEK 9100 34.2 15.6 219 30.4 16.0 190
MADISON PLATEAU 7750 24.1 10.1 239 20.6 11.7 176
NORTHEAST ENTRANCE 7350 6.9 4.0 173 11.3 5.8 195
PARKER PEAK 9400 18.4 10.6 174 12.8 7.6 168
SYLVAN LAKE 8420 17.3 10.8 160 19.7 9.8 201
THUMB DIVIDE 7980 18.8 7.2 261 18.9 10.5 180
TWO OCEAN PLATEAU 9360 26.4 12.6 210 20.3 15.5 131
WHISKEY CREEK 6800 15.0 7.0 214 -M 9.7 *
WHITE MILL 8700 -M 11.4 * -M 12.8 *
WOLVERINE 7650 -M 5.2 * 9.2 6.4 144
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Basin wide percent of average 214 170
WIND RIVER
BURROUGHS CREEK 8750 15.6 7.1 220 16.5 8.1 204
CHRISTINA LAKE 9980 12.5 7.5 167 15.1 8.4 180
COLD SPRINGS 9630 6.6 4.4 150 7.3 5.5 133
HOBBS PARK 10100 10.7 7.7 139 8.2 6.9 119
LITTLE WARM 9620 11.2 5.1 220 12.0 6.6 182
SOUTH PASS 9040 16.9 8.3 204 16.5 8.0 206
ST. LAWRENCE ALT 8620 4.9 3.3 148 5.7 5.0 114
TOGWOTEE PASS 9580 20.1 11.1 181 20.1 13.8 146
TOWNSEND CREEK 8700 6.3 4.5 140 7.1 5.8 122
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Basin wide percent of average 178 159
BIGHORN BASIN
BALD MTN. 9375 10.7 10.2 105 8.4 8.7 97
BEAR TRAP MEADOW 7900 4.1 3.7 111 4.7 4.3 109
BLACKWATER 9780 22.8 9.9 230 16.5 8.8 188
BONE SPRINGS DIV 9350 9.9 7.8 127 8.7 6.9 126
EVENING STAR 9200 25.4 12.9 197 24.2 10.8 224
GRAVE SPRINGS 8550 6.2 -M * 6.3 5.1 124
KIRWIN 9550 9.8 5.2 188 10.7 5.2 206
LOST CREEK 8080 -M 5.8 * -M 5.8 *
MARQUETTE 8760 6.6 3.8 174 7.0 4.7 149
MIDDLE POWDER 7760 7.7 5.7 135 7.4 6.0 123
OWL CREEK 8975 4.7 1.9 247 4.0 2.8 143
POWDER RIVER PASS 9480 5.1 5.1 100 6.2 5.6 111
SHELL CREEK 9580 9.5 7.5 127 7.0 6.4 109
SYLVAN LAKE 8420 17.3 10.8 160 19.7 9.8 201
SYLVAN ROAD 8120 11.5 5.8 198 16.4 8.0 205
TIMBER CREEK 7950 3.7 2.4 154 4.2 3.3 127
YOUNTS PEAK 8350 15.0 8.9 169 15.6 8.0 195
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Basin wide percent of average 161 160
SHOSHONE RIVER
BLACKWATER 9780 22.8 9.9 230 16.5 8.8 188
EVENING STAR 9200 25.4 12.9 197 24.2 10.8 224
KIRWIN 9550 9.8 5.2 188 10.7 5.2 206
MARQUETTE 8760 6.6 3.8 174 7.0 4.7 149
SYLVAN LAKE 8420 17.3 10.8 160 19.7 9.8 201
SYLVAN ROAD 8120 11.5 5.8 198 16.4 8.0 205
YOUNTS PEAK 8350 15.0 8.9 169 15.6 8.0 195
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Basin wide percent of average 189 199
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.1 3.7 111 4.7 4.3 109
BONE SPRINGS DIV 9350 9.9 7.8 127 8.7 6.9 126
BURGESS JUNCTION 7880 -M 5.5 * -M 5.6 *
CLOUD PEAK RESERVOIR 9860 9.7 5.6 173 8.3 6.1 136
DOME LAKE 8880 6.9 6.3 110 7.4 6.9 107
GRAVE SPRINGS 8550 6.2 -M * 6.3 5.1 124
HANSEN SAWMILL 8760 4.1 3.3 124 4.6 3.9 118
LOST CREEK 8080 -M 5.8 * -M 5.8 *
MIDDLE POWDER 7760 7.7 5.7 135 7.4 6.0 123
POWDER RIVER PASS 9480 5.1 5.1 100 6.2 5.6 111
SUCKER CREEK 8880 -M 5.2 * -M 6.5 *
TIE CREEK 6870 4.6 -M * 6.2 5.4 115
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Basin wide percent of average 127 119
BELLE FOURCHE
BLIND PARK 6890 6.5 5.3 123 10.5 4.8 219
NORTH RAPID CREEK 6130 7.4 -M * 9.6 -M *
WARREN PEAK 6520 10.2 5.3 192 7.0 3.9 179
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Basin wide percent of average 158 201
UPPER N. PLATTE RIVER
COLUMBINE 9400 13.6 9.8 139 16.4 10.8 152
DIVIDE PEAK 8800 13.9 9.5 146 15.0 11.9 126
ELK RIVER 8700 14.0 8.1 173 14.4 8.8 164
JOE WRIGHT 10120 12.2 10.4 117 15.8 11.6 136
NORTH FRENCH CREEK 10100 18.0 11.4 158 17.2 10.9 158
OLD BATTLE 10000 24.2 14.8 164 26.4 14.2 186
SOUTH BRUSH CREEK 8400 8.5 4.8 177 9.4 9.9 95
TOWER 10500 32.6 21.8 150 28.2 16.7 169
WEBBER SPRINGS 9200 18.9 12.2 155 22.1 13.2 167
WILLOW CREEK PASS 9540 10.5 5.7 184 8.7 6.1 143
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Basin wide percent of average 153 152
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.3 12.0 161 15.5 8.6 180
CASPER MTN. 7900 -M 7.5 * -M 7.1 *
CHRISTINA LAKE 9980 12.5 7.5 167 15.1 8.4 180
DEADMAN HILL 10220 8.6 7.9 109 9.6 7.4 130
LAPRELE CREEK 8320 8.8 4.7 187 8.1 5.1 159
RENO HILL 8400 13.0 6.2 210 11.1 9.7 114
ROACH 9700 13.6 7.7 177 13.6 10.2 133
SAND LAKE 10080 20.5 15.1 136 16.3 9.4 173
SOUTH PASS 9040 16.9 8.3 204 16.5 8.0 206
WINDY PEAK 7840 5.9 3.3 179 7.2 4.1 176
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Basin wide percent of average 164 159
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.0 5.0 160 10.5 7.5 140
DIVIDE PEAK 8800 13.9 9.5 146 15.0 11.9 126
OLD BATTLE 10000 24.2 14.8 164 26.4 14.2 186
SANDSTONE RS 8150 10.2 6.2 165 13.0 9.0 144
WHISKEY PARK 8950 19.4 12.8 152 18.2 11.8 154
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Basin wide percent of average 157 153
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.1 6.0 202 11.5 8.2 140
BLIND BULL SUM 8650 25.4 12.5 203 20.9 10.9 192
EAST RIM DIVIDE 7930 10.8 5.7 189 11.3 7.6 149
ELKHART PARK G.S. 9400 12.4 5.8 214 12.6 8.0 157
GROS VENTRE SUMMIT 8775 14.0 6.9 203 12.7 8.0 159
KENDALL R.S. 7740 16.8 5.9 285 16.9 7.8 217
LOOMIS PARK 8240 16.1 7.0 230 17.6 9.5 185
NEW FORK LAKE 8340 10.5 4.6 228 9.5 7.3 130
SNIDER BASIN 8250 14.0 6.0 233 12.7 7.6 167
SPRING CREEK DIVIDE 9000 22.1 11.6 191 19.9 13.3 150
TRIPLE PEAK 8500 22.1 10.9 203 23.3 15.6 149
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Basin wide percent of average 213 163
LOWER GREEN RIVER
HAMS FORK 7840 10.6 4.3 247 9.1 6.7 136
HEWINTA 9500 6.4 3.9 164 7.4 6.4 116
HICKERSON PARK 9150 3.7 2.6 142 4.9 4.8 102
HOLE-IN-ROCK 9150 4.1 2.3 178 5.1 4.8 106
INDIAN CREEK 9425 22.8 11.6 197 19.0 12.6 151
KELLEY R.S. 8180 15.6 6.7 233 18.8 9.4 200
STEEL CREEK PARK 10100 8.4 7.2 117 8.5 6.8 125
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Basin wide percent of average 185 141
UPPER BEAR RIVER
BUG LAKE 7950 19.6 8.8 223 19.3 9.5 203
HAYDEN FORK 9400 10.9 6.8 160 14.4 8.8 164
KELLEY R.S. 8180 15.6 6.7 233 18.8 9.4 200
LILY LAKE 9050 10.0 6.2 161 10.6 7.2 147
MONTE CRISTO 8960 23.4 11.0 213 20.3 12.3 165
SALT RIVER SUMMIT 7600 13.1 5.1 257 14.8 8.5 174
TRIAL LAKE 9960 20.4 10.8 189 -M 11.0 *
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Basin wide percent of average 204 176
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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.