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: FEBRUARY 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 25.7 14.4 178 27.5 18.6 148
COTTONWOOD CREEK 7600 25.6 16.9 151 26.7 20.3 132
GRANITE CREEK 6770 26.2 14.2 185 22.3 19.6 114
GRASSY LAKE 7265 40.0 29.8 134 38.6 30.1 128
GROS VENTRE SUMMIT 8775 18.7 12.0 156 17.6 13.2 133
LEWIS LAKE DIVIDE 7860 47.4 27.1 175 -M 30.6 *
PHILLIPS BENCH 8200 35.0 22.5 156 -M 24.2 *
SALT RIVER SUMMIT 7600 19.4 10.9 178 21.0 14.0 150
SNAKE RIVER STATION 6920 24.9 14.9 167 32.1 21.2 151
SPRING CREEK DIVIDE 9000 31.9 21.3 150 -M 22.3 *
THUMB DIVIDE 7980 27.6 13.2 209 -M 17.4 *
TOGWOTEE PASS 9580 29.3 19.3 152 -M 22.9 *
TWO OCEAN PLATEAU 9360 37.9 20.8 182 -M 25.7 *
WILLOW CREEK 8450 34.9 24.2 144 35.8 26.3 136
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Basin wide percent of average 162 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.5 18.4 166 -M 13.9 *
BLACK BEAR 7950 -M 29.0 * -M 30.9 *
CANYON 7940 20.6 9.8 210 22.9 11.2 204
FISHER CREEK 9100 47.8 27.9 171 -M 28.3 *
MADISON PLATEAU 7750 35.0 19.0 184 34.7 20.0 174
NORTHEAST ENTRANCE 7350 10.9 7.5 145 17.0 9.5 179
PARKER PEAK 9400 26.9 16.6 162 -M 12.1 *
SYLVAN LAKE 8420 27.2 17.2 158 -M 15.1 *
THUMB DIVIDE 7980 27.6 13.2 209 -M 17.4 *
TWO OCEAN PLATEAU 9360 37.9 20.8 182 -M 25.7 *
WHISKEY CREEK 6800 21.8 13.2 165 -M 16.6 *
WHITE MILL 8700 33.0 19.7 168 -M 22.0 *
WOLVERINE 7650 13.9 9.3 149 13.2 10.1 131
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Basin wide percent of average 173 173*
WIND RIVER
BURROUGHS CREEK 8750 20.8 12.2 170 -M 12.9 *
CHRISTINA LAKE 9980 17.8 11.8 151 19.5 12.4 157
COLD SPRINGS 9630 8.8 6.5 135 9.7 7.8 124
HOBBS PARK 10100 14.3 11.2 128 11.3 10.4 109
LITTLE WARM 9620 14.6 8.4 174 15.9 10.1 157
SOUTH PASS 9040 23.0 13.0 177 21.6 12.6 171
ST. LAWRENCE ALT 8620 7.5 5.7 132 8.9 7.3 122
TOGWOTEE PASS 9580 29.3 19.3 152 -M 22.9 *
TOWNSEND CREEK 8700 8.5 7.3 116 9.7 9.0 108
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Basin wide percent of average 152 139
BIGHORN BASIN
BALD MTN. 9375 18.1 15.8 115 14.9 13.2 113
BEAR TRAP MEADOW 7900 6.4 5.5 116 6.8 5.9 115
BLACKWATER 9780 31.9 16.4 195 24.1 14.0 172
BONE SPRINGS DIV 9350 15.4 12.3 125 13.8 10.8 128
EVENING STAR 9200 35.4 20.9 169 -M 17.5 *
GRAVE SPRINGS 8550 9.4 -M * 9.0 7.0 129
KIRWIN 9550 12.9 7.5 172 14.3 7.9 181
LOST CREEK 8080 11.8 9.6 123 12.1 8.7 139
MARQUETTE 8760 8.6 6.0 143 8.9 6.6 135
MIDDLE POWDER 7760 11.9 8.9 134 11.1 8.7 128
OWL CREEK 8975 6.3 3.3 191 5.3 4.5 118
POWDER RIVER PASS 9480 11.3 8.1 140 10.9 8.8 124
SHELL CREEK 9580 14.7 11.7 126 12.1 9.9 122
SYLVAN LAKE 8420 27.2 17.2 158 -M 15.1 *
SYLVAN ROAD 8120 18.1 10.2 177 23.9 12.6 190
TIMBER CREEK 7950 5.4 4.4 123 6.1 4.7 130
YOUNTS PEAK 8350 19.9 13.8 144 -M 12.9 *
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Basin wide percent of average 149 141
SHOSHONE RIVER
BLACKWATER 9780 31.9 16.4 195 24.1 14.0 172
EVENING STAR 9200 35.4 20.9 169 -M 17.5 *
KIRWIN 9550 12.9 7.5 172 14.3 7.9 181
MARQUETTE 8760 8.6 6.0 143 8.9 6.6 135
SYLVAN LAKE 8420 27.2 17.2 158 -M 15.1 *
SYLVAN ROAD 8120 18.1 10.2 177 23.9 12.6 190
YOUNTS PEAK 8350 19.9 13.8 144 -M 12.9 *
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Basin wide percent of average 167 173
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.4 5.5 116 6.8 5.9 115
BONE SPRINGS DIV 9350 15.4 12.3 125 13.8 10.8 128
BURGESS JUNCTION 7880 10.3 8.8 117 10.5 8.0 131
CLOUD PEAK RESERVOIR 9860 14.3 9.9 144 11.6 9.4 123
DOME LAKE 8880 10.0 10.4 96 11.0 9.7 113
GRAVE SPRINGS 8550 9.4 -M * 9.0 7.0 129
HANSEN SAWMILL 8760 5.8 5.3 109 6.1 5.6 109
LOST CREEK 8080 11.8 9.6 123 12.1 8.7 139
MIDDLE POWDER 7760 11.9 8.9 134 11.1 8.7 128
POWDER RIVER PASS 9480 11.3 8.1 140 10.9 8.8 124
SUCKER CREEK 8880 11.6 8.9 130 11.7 9.8 119
TIE CREEK 6870 7.1 -M * 9.5 7.7 123
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Basin wide percent of average 124 124
BELLE FOURCHE
BLIND PARK 6890 9.3 8.4 111 13.4 7.0 191
NORTH RAPID CREEK 6130 9.9 -M * 12.0 -M *
WARREN PEAK 6520 15.6 8.4 186 -M 5.8 *
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Basin wide percent of average 148 191*
UPPER N. PLATTE RIVER
COLUMBINE 9400 26.9 19.0 142 26.9 18.9 142
DIVIDE PEAK 8800 21.0 15.5 135 20.8 17.7 118
ELK RIVER 8700 24.9 15.2 164 22.3 14.3 156
JOE WRIGHT 10120 19.8 16.1 123 24.5 18.7 131
NORTH FRENCH CREEK 10100 30.3 18.7 162 25.3 17.4 145
OLD BATTLE 10000 33.9 24.0 141 28.4 22.5 126
SOUTH BRUSH CREEK 8400 13.6 8.5 160 15.4 12.0 128
TOWER 10500 48.5 34.5 141 36.1 27.7 130
WEBBER SPRINGS 9200 27.1 20.5 132 30.8 19.1 161
WILLOW CREEK PASS 9540 15.4 8.5 181 12.7 9.1 140
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Basin wide percent of average 145 137
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 29.3 18.3 160 22.6 14.2 159
CASPER MTN. 7900 16.5 11.1 149 15.7 9.9 159
CHRISTINA LAKE 9980 17.8 11.8 151 19.5 12.4 157
DEADMAN HILL 10220 13.4 12.6 106 14.9 11.9 125
LAPRELE CREEK 8320 12.9 7.7 168 12.2 8.5 144
RENO HILL 8400 18.1 9.8 185 15.5 13.3 117
ROACH 9700 18.4 12.8 144 19.0 16.1 118
SAND LAKE 10080 31.0 24.7 126 24.6 15.1 163
SOUTH PASS 9040 23.0 13.0 177 21.6 12.6 171
WINDY PEAK 7840 8.7 5.5 158 10.3 6.6 156
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Basin wide percent of average 149 146
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.2 8.8 173 16.2 11.9 136
DIVIDE PEAK 8800 21.0 15.5 135 20.8 17.7 118
OLD BATTLE 10000 33.9 24.0 141 28.4 22.5 126
SANDSTONE RS 8150 18.0 11.1 162 19.9 14.6 136
WHISKEY PARK 8950 33.6 21.6 156 28.6 21.5 133
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Basin wide percent of average 150 129
UPPER GREEN RIVER
BIG SANDY OPENING 9100 16.7 11.0 152 15.4 13.5 114
BLIND BULL SUM 8650 36.1 22.3 162 -M 19.4 *
EAST RIM DIVIDE 7930 14.8 10.9 136 15.3 12.6 121
ELKHART PARK G.S. 9400 16.3 10.6 154 16.3 13.3 123
GROS VENTRE SUMMIT 8775 18.7 12.0 156 17.6 13.2 133
KENDALL R.S. 7740 20.9 11.5 182 17.7 12.9 137
LOOMIS PARK 8240 -M 13.7 * 19.6 15.6 126
NEW FORK LAKE 8340 13.1 9.1 144 12.1 12.0 101
SNIDER BASIN 8250 20.6 11.6 178 17.6 12.6 140
SPRING CREEK DIVIDE 9000 31.9 21.3 150 -M 22.3 *
TRIPLE PEAK 8500 30.5 20.1 152 32.6 25.9 126
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Basin wide percent of average 156 125
LOWER GREEN RIVER
HAMS FORK 7840 15.6 9.6 163 13.6 11.1 123
HEWINTA 9500 11.1 7.6 146 11.8 9.5 124
HICKERSON PARK 9150 6.0 4.5 133 7.4 6.7 110
HOLE-IN-ROCK 9150 6.8 4.0 170 7.8 6.7 116
INDIAN CREEK 9425 35.0 21.1 166 -M 20.9 *
KELLEY R.S. 8180 21.6 12.9 167 24.4 15.6 156
STEEL CREEK PARK 10100 13.4 11.3 119 13.0 9.6 135
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Basin wide percent of average 154 132
UPPER BEAR RIVER
BUG LAKE 7950 28.5 15.3 186 26.4 14.7 180
HAYDEN FORK 9400 17.9 12.4 144 22.3 13.9 160
KELLEY R.S. 8180 21.6 12.9 167 24.4 15.6 156
LILY LAKE 9050 15.1 9.7 156 16.6 10.8 154
MONTE CRISTO 8960 36.6 20.7 177 29.4 19.1 154
SALT RIVER SUMMIT 7600 19.4 10.9 178 21.0 14.0 150
TRIAL LAKE 9960 32.6 18.8 173 31.6 17.9 177
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Basin wide percent of average 171 162
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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.