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 FRIDAY: FEBRUARY 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 25.9 14.8 175 27.5 19.0 145
COTTONWOOD CREEK 7600 26.0 17.3 150 27.4 20.9 131
GRANITE CREEK 6770 26.4 14.5 182 22.3 20.0 112
GRASSY LAKE 7265 39.8 29.7 134 38.6 30.8 125
GROS VENTRE SUMMIT 8775 18.7 12.2 153 17.6 13.5 130
LEWIS LAKE DIVIDE 7860 47.4 27.7 171 -M 31.3 *
PHILLIPS BENCH 8200 35.2 22.9 154 39.5 24.7 160
SALT RIVER SUMMIT 7600 19.6 11.2 175 21.1 14.3 148
SNAKE RIVER STATION 6920 25.1 15.2 165 32.2 21.6 149
SPRING CREEK DIVIDE 9000 31.9 21.8 146 -M 22.8 *
THUMB DIVIDE 7980 27.9 13.5 207 -M 17.8 *
TOGWOTEE PASS 9580 29.7 19.7 151 -M 23.4 *
TWO OCEAN PLATEAU 9360 38.3 21.2 181 -M 26.2 *
WILLOW CREEK 8450 32.8 24.7 133 36.2 26.9 135
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Basin wide percent of average 159 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.6 18.8 163 -M 14.2 *
BLACK BEAR 7950 -M 29.8 * -M 31.6 *
CANYON 7940 20.9 10.0 209 23.2 11.5 202
FISHER CREEK 9100 48.4 28.6 169 -M 29.0 *
MADISON PLATEAU 7750 35.4 19.4 182 34.7 20.5 169
NORTHEAST ENTRANCE 7350 11.0 7.6 145 17.2 9.7 177
PARKER PEAK 9400 27.3 17.0 161 -M 12.4 *
SYLVAN LAKE 8420 27.3 17.5 156 -M 15.4 *
THUMB DIVIDE 7980 27.9 13.5 207 -M 17.8 *
TWO OCEAN PLATEAU 9360 38.3 21.2 181 -M 26.2 *
WHISKEY CREEK 6800 22.0 13.5 163 -M 17.0 *
WHITE MILL 8700 33.1 20.1 165 -M 22.5 *
WOLVERINE 7650 13.7 9.5 144 13.5 10.4 130
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Basin wide percent of average 171 170*
WIND RIVER
BURROUGHS CREEK 8750 20.8 12.4 168 -M 13.2 *
CHRISTINA LAKE 9980 17.5 12.0 146 19.5 12.6 155
COLD SPRINGS 9630 8.6 6.7 128 9.7 8.0 121
HOBBS PARK 10100 14.2 11.5 123 11.3 10.6 107
LITTLE WARM 9620 14.4 8.6 167 16.0 10.3 155
SOUTH PASS 9040 22.7 13.3 171 21.6 12.9 167
ST. LAWRENCE ALT 8620 7.5 5.8 129 9.2 7.5 123
TOGWOTEE PASS 9580 29.7 19.7 151 -M 23.4 *
TOWNSEND CREEK 8700 8.2 7.5 109 9.5 9.2 103
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Basin wide percent of average 147 136
BIGHORN BASIN
BALD MTN. 9375 18.2 16.1 113 15.0 13.4 112
BEAR TRAP MEADOW 7900 6.2 5.6 111 6.3 6.0 105
BLACKWATER 9780 32.1 16.9 190 24.2 14.3 169
BONE SPRINGS DIV 9350 15.1 12.6 120 13.8 11.0 125
EVENING STAR 9200 35.6 21.3 167 -M 17.9 *
GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128
KIRWIN 9550 12.7 7.6 167 14.4 8.1 178
LOST CREEK 8080 12.0 9.9 121 12.1 8.8 138
MARQUETTE 8760 8.6 6.2 139 8.9 6.7 133
MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126
OWL CREEK 8975 6.2 3.4 182 5.1 4.6 111
POWDER RIVER PASS 9480 11.7 8.3 141 11.2 8.9 126
SHELL CREEK 9580 14.9 12.0 124 12.3 10.1 122
SYLVAN LAKE 8420 27.3 17.5 156 -M 15.4 *
SYLVAN ROAD 8120 18.3 10.5 174 24.1 12.9 187
TIMBER CREEK 7950 5.5 4.6 120 6.1 4.8 127
YOUNTS PEAK 8350 20.1 14.1 143 -M 13.2 *
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Basin wide percent of average 146 138
SHOSHONE RIVER
BLACKWATER 9780 32.1 16.9 190 24.2 14.3 169
EVENING STAR 9200 35.6 21.3 167 -M 17.9 *
KIRWIN 9550 12.7 7.6 167 14.4 8.1 178
MARQUETTE 8760 8.6 6.2 139 8.9 6.7 133
SYLVAN LAKE 8420 27.3 17.5 156 -M 15.4 *
SYLVAN ROAD 8120 18.3 10.5 174 24.1 12.9 187
YOUNTS PEAK 8350 20.1 14.1 143 -M 13.2 *
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Basin wide percent of average 164 170
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.2 5.6 111 6.3 6.0 105
BONE SPRINGS DIV 9350 15.1 12.6 120 13.8 11.0 125
BURGESS JUNCTION 7880 10.2 9.1 112 10.3 8.2 126
CLOUD PEAK RESERVOIR 9860 14.7 10.2 144 12.1 9.7 125
DOME LAKE 8880 10.0 10.6 94 11.5 9.9 116
GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128
HANSEN SAWMILL 8760 5.9 5.4 109 6.3 5.7 111
LOST CREEK 8080 12.0 9.9 121 12.1 8.8 138
MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126
POWDER RIVER PASS 9480 11.7 8.3 141 11.2 8.9 126
SUCKER CREEK 8880 11.6 9.1 127 11.4 10.0 114
TIE CREEK 6870 6.9 -M * 9.4 7.8 121
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Basin wide percent of average 122 122
BELLE FOURCHE
BLIND PARK 6890 9.3 8.6 108 13.3 7.2 185
NORTH RAPID CREEK 6130 9.7 -M * 11.7 -M *
WARREN PEAK 6520 15.4 8.6 179 -M 5.9 *
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Basin wide percent of average 144 185*
UPPER N. PLATTE RIVER
COLUMBINE 9400 27.3 19.5 140 26.5 19.3 137
DIVIDE PEAK 8800 21.4 15.8 135 20.8 18.0 116
ELK RIVER 8700 25.0 15.6 160 22.4 14.6 153
JOE WRIGHT 10120 20.3 16.5 123 25.0 19.1 131
NORTH FRENCH CREEK 10100 31.0 19.1 162 25.3 17.8 142
OLD BATTLE 10000 33.9 24.6 138 28.3 23.0 123
SOUTH BRUSH CREEK 8400 13.9 8.7 160 15.5 12.3 126
TOWER 10500 49.3 35.3 140 36.2 28.3 128
WEBBER SPRINGS 9200 27.5 21.0 131 31.4 19.5 161
WILLOW CREEK PASS 9540 16.0 8.7 184 12.7 9.3 137
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Basin wide percent of average 144 135
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 29.6 18.8 157 23.1 14.5 159
CASPER MTN. 7900 16.9 11.4 148 15.9 10.2 156
CHRISTINA LAKE 9980 17.5 12.0 146 19.5 12.6 155
DEADMAN HILL 10220 13.4 12.9 104 15.1 12.2 124
LAPRELE CREEK 8320 12.5 7.9 158 12.2 8.7 140
RENO HILL 8400 18.4 10.1 182 15.7 13.7 115
ROACH 9700 18.8 13.1 144 19.3 16.4 118
SAND LAKE 10080 31.6 25.3 125 24.9 15.5 161
SOUTH PASS 9040 22.7 13.3 171 21.6 12.9 167
WINDY PEAK 7840 8.9 5.7 156 10.0 6.8 147
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Basin wide percent of average 146 144
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.7 9.1 173 16.1 12.1 133
DIVIDE PEAK 8800 21.4 15.8 135 20.8 18.0 116
OLD BATTLE 10000 33.9 24.6 138 28.3 23.0 123
SANDSTONE RS 8150 18.2 11.4 160 20.2 14.8 136
WHISKEY PARK 8950 33.9 22.1 153 29.2 21.8 134
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Basin wide percent of average 148 128
UPPER GREEN RIVER
BIG SANDY OPENING 9100 16.4 11.3 145 15.4 13.8 112
BLIND BULL SUM 8650 36.2 22.9 158 -M 19.8 *
EAST RIM DIVIDE 7930 14.8 11.2 132 15.2 12.9 118
ELKHART PARK G.S. 9400 16.2 10.8 150 16.5 13.6 121
GROS VENTRE SUMMIT 8775 18.7 12.2 153 17.6 13.5 130
KENDALL R.S. 7740 21.0 11.8 178 17.3 13.2 131
LOOMIS PARK 8240 -M 14.0 * 19.5 15.9 123
NEW FORK LAKE 8340 13.0 9.3 140 11.9 12.2 98
SNIDER BASIN 8250 20.7 11.9 174 17.5 12.9 136
SPRING CREEK DIVIDE 9000 31.9 21.8 146 -M 22.8 *
TRIPLE PEAK 8500 30.9 20.6 150 32.4 26.4 123
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Basin wide percent of average 153 122
LOWER GREEN RIVER
HAMS FORK 7840 15.6 9.9 158 13.4 11.3 119
HEWINTA 9500 11.4 7.8 146 12.2 9.7 126
HICKERSON PARK 9150 5.9 4.6 128 7.7 6.9 112
HOLE-IN-ROCK 9150 7.0 4.2 167 8.1 6.9 117
INDIAN CREEK 9425 35.0 21.6 162 28.4 21.3 133
KELLEY R.S. 8180 21.6 13.3 162 24.3 15.9 153
STEEL CREEK PARK 10100 13.6 11.6 117 13.3 9.8 136
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Basin wide percent of average 151 131
UPPER BEAR RIVER
BUG LAKE 7950 28.7 15.7 183 26.4 15.0 176
HAYDEN FORK 9400 18.2 12.7 143 22.6 14.3 158
KELLEY R.S. 8180 21.6 13.3 162 24.3 15.9 153
LILY LAKE 9050 15.5 10.0 155 17.2 11.1 155
MONTE CRISTO 8960 36.9 21.4 172 30.0 19.6 153
SALT RIVER SUMMIT 7600 19.6 11.2 175 21.1 14.3 148
TRIAL LAKE 9960 32.7 19.5 168 31.9 18.4 173
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Basin wide percent of average 167 160
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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.