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 THURSDAY: FEBRUARY 20 , 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 25.9 14.7 176 27.5 18.9 146
COTTONWOOD CREEK 7600 25.9 17.2 151 27.3 20.7 132
GRANITE CREEK 6770 26.4 14.4 183 22.3 19.8 113
GRASSY LAKE 7265 40.0 29.7 135 38.6 30.5 127
GROS VENTRE SUMMIT 8775 18.9 12.1 156 17.8 13.4 133
LEWIS LAKE DIVIDE 7860 47.5 27.5 173 -M 31.0 *
PHILLIPS BENCH 8200 35.4 22.8 155 39.0 24.6 159
SALT RIVER SUMMIT 7600 19.6 11.1 177 21.1 14.2 149
SNAKE RIVER STATION 6920 25.1 15.1 166 32.1 21.5 149
SPRING CREEK DIVIDE 9000 32.0 21.6 148 -M 22.6 *
THUMB DIVIDE 7980 27.9 13.4 208 -M 17.7 *
TOGWOTEE PASS 9580 29.7 19.6 152 -M 23.2 *
TWO OCEAN PLATEAU 9360 38.3 21.0 182 -M 26.0 *
WILLOW CREEK 8450 32.8 24.5 134 36.1 26.7 135
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Basin wide percent of average 161 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.7 18.7 164 -M 14.1 *
BLACK BEAR 7950 -M 29.5 * -M 31.4 *
CANYON 7940 20.9 9.9 211 23.2 11.4 204
FISHER CREEK 9100 48.3 28.4 170 -M 28.7 *
MADISON PLATEAU 7750 35.3 19.3 183 34.7 20.4 170
NORTHEAST ENTRANCE 7350 11.0 7.6 145 17.2 9.6 179
PARKER PEAK 9400 27.3 16.8 162 -M 12.3 *
SYLVAN LAKE 8420 27.3 17.4 157 -M 15.3 *
THUMB DIVIDE 7980 27.9 13.4 208 -M 17.7 *
TWO OCEAN PLATEAU 9360 38.3 21.0 182 -M 26.0 *
WHISKEY CREEK 6800 22.0 13.4 164 -M 16.8 *
WHITE MILL 8700 33.2 20.0 166 -M 22.4 *
WOLVERINE 7650 13.8 9.5 145 13.4 10.3 130
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Basin wide percent of average 172 171*
WIND RIVER
BURROUGHS CREEK 8750 20.9 12.3 170 -M 13.1 *
CHRISTINA LAKE 9980 17.7 11.9 149 19.5 12.5 156
COLD SPRINGS 9630 8.8 6.6 133 9.7 7.9 123
HOBBS PARK 10100 14.4 11.4 126 11.3 10.6 107
LITTLE WARM 9620 14.6 8.6 170 16.2 10.2 159
SOUTH PASS 9040 23.0 13.2 174 21.7 12.8 170
ST. LAWRENCE ALT 8620 7.5 5.8 129 9.2 7.5 123
TOGWOTEE PASS 9580 29.7 19.6 152 -M 23.2 *
TOWNSEND CREEK 8700 8.6 7.4 116 9.7 9.2 105
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Basin wide percent of average 150 138
BIGHORN BASIN
BALD MTN. 9375 18.1 16.0 113 14.9 13.3 112
BEAR TRAP MEADOW 7900 6.6 5.6 118 6.9 6.0 115
BLACKWATER 9780 32.2 16.7 193 24.1 14.2 170
BONE SPRINGS DIV 9350 15.4 12.5 123 13.8 11.0 125
EVENING STAR 9200 35.6 21.2 168 -M 17.8 *
GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128
KIRWIN 9550 12.9 7.6 170 14.3 8.0 179
LOST CREEK 8080 12.0 9.8 122 12.2 8.8 139
MARQUETTE 8760 8.7 6.1 143 8.9 6.7 133
MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126
OWL CREEK 8975 6.3 3.4 185 5.2 4.5 116
POWDER RIVER PASS 9480 11.5 8.2 140 11.2 8.9 126
SHELL CREEK 9580 14.9 11.9 125 12.2 10.1 121
SYLVAN LAKE 8420 27.3 17.4 157 -M 15.3 *
SYLVAN ROAD 8120 18.3 10.4 176 24.1 12.8 188
TIMBER CREEK 7950 5.6 4.5 124 6.1 4.8 127
YOUNTS PEAK 8350 20.1 14.0 144 -M 13.1 *
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Basin wide percent of average 148 139
SHOSHONE RIVER
BLACKWATER 9780 32.2 16.7 193 24.1 14.2 170
EVENING STAR 9200 35.6 21.2 168 -M 17.8 *
KIRWIN 9550 12.9 7.6 170 14.3 8.0 179
MARQUETTE 8760 8.7 6.1 143 8.9 6.7 133
SYLVAN LAKE 8420 27.3 17.4 157 -M 15.3 *
SYLVAN ROAD 8120 18.3 10.4 176 24.1 12.8 188
YOUNTS PEAK 8350 20.1 14.0 144 -M 13.1 *
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Basin wide percent of average 166 171
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.6 5.6 118 6.9 6.0 115
BONE SPRINGS DIV 9350 15.4 12.5 123 13.8 11.0 125
BURGESS JUNCTION 7880 10.3 9.0 114 10.4 8.1 128
CLOUD PEAK RESERVOIR 9860 14.6 10.1 145 12.0 9.6 125
DOME LAKE 8880 10.2 10.5 97 11.4 9.9 115
GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128
HANSEN SAWMILL 8760 5.8 5.4 107 6.1 5.7 107
LOST CREEK 8080 12.0 9.8 122 12.2 8.8 139
MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126
POWDER RIVER PASS 9480 11.5 8.2 140 11.2 8.9 126
SUCKER CREEK 8880 11.7 9.1 129 11.7 9.9 118
TIE CREEK 6870 7.0 -M * 9.5 7.8 122
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Basin wide percent of average 124 123
BELLE FOURCHE
BLIND PARK 6890 9.3 8.5 109 13.4 7.1 189
NORTH RAPID CREEK 6130 9.9 -M * 11.9 -M *
WARREN PEAK 6520 15.6 8.5 184 -M 5.9 *
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Basin wide percent of average 146 189*
UPPER N. PLATTE RIVER
COLUMBINE 9400 27.2 19.3 141 26.7 19.2 139
DIVIDE PEAK 8800 21.2 15.7 135 20.9 17.9 117
ELK RIVER 8700 24.9 15.5 161 22.6 14.5 156
JOE WRIGHT 10120 20.1 16.4 123 25.0 19.0 132
NORTH FRENCH CREEK 10100 30.7 19.0 162 25.4 17.7 144
OLD BATTLE 10000 33.9 24.4 139 28.4 22.9 124
SOUTH BRUSH CREEK 8400 13.6 8.6 158 15.4 12.2 126
TOWER 10500 49.1 35.0 140 36.2 28.1 129
WEBBER SPRINGS 9200 27.5 20.8 132 31.4 19.4 162
WILLOW CREEK PASS 9540 15.5 8.6 180 12.6 9.2 137
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Basin wide percent of average 144 136
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 29.5 18.6 159 23.0 14.4 160
CASPER MTN. 7900 16.9 11.3 150 16.0 10.1 158
CHRISTINA LAKE 9980 17.7 11.9 149 19.5 12.5 156
DEADMAN HILL 10220 13.5 12.8 105 15.0 12.1 124
LAPRELE CREEK 8320 12.9 7.8 165 12.2 8.6 142
RENO HILL 8400 18.3 10.0 183 15.7 13.6 115
ROACH 9700 18.8 13.0 145 19.3 16.3 118
SAND LAKE 10080 31.3 25.1 125 24.8 15.4 161
SOUTH PASS 9040 23.0 13.2 174 21.7 12.8 170
WINDY PEAK 7840 8.8 5.6 157 10.2 6.7 152
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Basin wide percent of average 147 145
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.3 9.0 170 16.1 12.1 133
DIVIDE PEAK 8800 21.2 15.7 135 20.9 17.9 117
OLD BATTLE 10000 33.9 24.4 139 28.4 22.9 124
SANDSTONE RS 8150 18.0 11.3 159 19.9 14.7 135
WHISKEY PARK 8950 33.7 21.9 154 29.0 21.7 134
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Basin wide percent of average 148 128
UPPER GREEN RIVER
BIG SANDY OPENING 9100 16.9 11.2 151 15.4 13.7 112
BLIND BULL SUM 8650 36.3 22.7 160 -M 19.7 *
EAST RIM DIVIDE 7930 14.8 11.1 133 15.2 12.8 119
ELKHART PARK G.S. 9400 16.3 10.8 151 16.4 13.5 121
GROS VENTRE SUMMIT 8775 18.9 12.1 156 17.8 13.4 133
KENDALL R.S. 7740 21.1 11.7 180 17.5 13.1 134
LOOMIS PARK 8240 -M 13.9 * 19.7 15.8 125
NEW FORK LAKE 8340 13.2 9.3 142 12.0 12.2 98
SNIDER BASIN 8250 20.8 11.8 176 17.7 12.8 138
SPRING CREEK DIVIDE 9000 32.0 21.6 148 -M 22.6 *
TRIPLE PEAK 8500 30.8 20.4 151 32.7 26.2 125
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Basin wide percent of average 155 123
LOWER GREEN RIVER
HAMS FORK 7840 15.7 9.8 160 13.5 11.2 121
HEWINTA 9500 11.3 7.7 147 12.0 9.6 125
HICKERSON PARK 9150 6.7 4.6 146 7.5 6.8 110
HOLE-IN-ROCK 9150 6.9 4.1 168 7.9 6.8 116
INDIAN CREEK 9425 35.3 21.4 165 28.5 21.2 134
KELLEY R.S. 8180 21.6 13.2 164 24.4 15.8 154
STEEL CREEK PARK 10100 13.6 11.5 118 13.2 9.8 135
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Basin wide percent of average 154 132
UPPER BEAR RIVER
BUG LAKE 7950 28.7 15.6 184 26.5 14.9 178
HAYDEN FORK 9400 18.0 12.6 143 22.5 14.1 160
KELLEY R.S. 8180 21.6 13.2 164 24.4 15.8 154
LILY LAKE 9050 15.2 9.9 154 16.9 11.0 154
MONTE CRISTO 8960 36.9 21.2 174 30.0 19.4 155
SALT RIVER SUMMIT 7600 19.6 11.1 177 21.1 14.2 149
TRIAL LAKE 9960 32.8 19.3 170 31.8 18.3 174
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Basin wide percent of average 168 161
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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.