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: APRIL 24 , 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 28.4 13.0 218 37.6 24.6 153
COTTONWOOD CREEK 7600 31.3 21.4 146 36.1 27.6 131
GRANITE CREEK 6770 26.7 15.0 178 34.5 26.1 132
GRASSY LAKE 7265 47.3 35.6 133 58.2 41.0 142
GROS VENTRE SUMMIT 8775 23.2 14.8 157 22.5 17.7 127
LEWIS LAKE DIVIDE 7860 52.6 35.5 148 60.6 41.7 145
PHILLIPS BENCH 8200 40.9 30.1 136 49.2 32.9 150
SALT RIVER SUMMIT 7600 20.9 12.1 173 25.4 18.8 135
SNAKE RIVER STATION 6920 24.8 17.4 143 38.8 28.8 135
SPRING CREEK DIVIDE 9000 39.9 29.5 135 35.3 30.2 117
THUMB DIVIDE 7980 31.3 16.1 194 35.2 23.1 152
TOGWOTEE PASS 9580 36.4 27.7 131 36.6 31.2 117
TWO OCEAN PLATEAU 9360 48.4 27.2 178 -M 33.9 *
WILLOW CREEK 8450 42.0 31.8 132 47.2 35.4 133
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Basin wide percent of average 151 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.8 * 32.2 20.5 157
BLACK BEAR 7950 -M 40.0 * -M 45.3 *
CANYON 7940 22.6 12.0 188 -M 15.9 *
FISHER CREEK 9100 58.7 38.4 153 -M 41.0 *
MADISON PLATEAU 7750 44.5 24.6 181 44.3 29.2 152
NORTHEAST ENTRANCE 7350 10.1 7.3 138 21.2 13.4 158
PARKER PEAK 9400 34.4 23.5 146 -M 17.6 *
SYLVAN LAKE 8420 31.7 23.8 133 35.0 21.6 162
THUMB DIVIDE 7980 31.3 16.1 194 35.2 23.1 152
TWO OCEAN PLATEAU 9360 48.4 27.2 178 -M 33.9 *
WHISKEY CREEK 6800 24.2 16.5 147 33.4 24.3 137
WHITE MILL 8700 40.8 26.1 156 -M 31.7 *
WOLVERINE 7650 12.7 9.7 131 16.9 14.6 116
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Basin wide percent of average 160 149
WIND RIVER
BURROUGHS CREEK 8750 24.6 14.0 176 27.8 18.8 148
CHRISTINA LAKE 9980 21.1 17.4 121 24.9 19.3 129
COLD SPRINGS 9630 8.8 7.6 116 14.6 12.5 117
HOBBS PARK 10100 19.7 17.3 114 16.2 16.6 98
LITTLE WARM 9620 18.7 11.8 158 22.2 15.6 142
SOUTH PASS 9040 25.9 17.9 145 26.6 19.8 134
ST. LAWRENCE ALT 8620 9.0 6.1 148 12.9 12.0 108
TOGWOTEE PASS 9580 36.4 27.7 131 36.6 31.2 117
TOWNSEND CREEK 8700 10.5 9.9 106 14.3 14.8 97
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Basin wide percent of average 135 122
BIGHORN BASIN
BALD MTN. 9375 24.3 23.3 104 20.7 20.0 104
BEAR TRAP MEADOW 7900 6.0 5.4 111 11.2 10.0 112
BLACKWATER 9780 41.3 25.3 163 31.9 20.0 160
BONE SPRINGS DIV 9350 20.7 18.3 113 19.5 17.4 112
EVENING STAR 9200 43.6 30.1 145 43.1 25.2 171
GRAVE SPRINGS 8550 12.8 -M * 13.1 11.7 112
KIRWIN 9550 16.5 11.4 145 17.8 12.7 140
LOST CREEK 8080 18.9 15.5 122 18.0 14.3 126
MARQUETTE 8760 12.9 8.6 150 13.8 12.6 110
MIDDLE POWDER 7760 18.5 14.3 129 16.8 14.1 119
OWL CREEK 8975 6.6 4.0 165 7.5 7.7 97
POWDER RIVER PASS 9480 -M 11.0 * 15.5 14.0 111
SHELL CREEK 9580 19.7 16.7 118 16.9 15.2 111
SYLVAN LAKE 8420 31.7 23.8 133 35.0 21.6 162
SYLVAN ROAD 8120 18.0 9.2 196 28.6 18.0 159
TIMBER CREEK 7950 6.6 6.3 105 9.3 9.3 100
YOUNTS PEAK 8350 24.6 18.3 134 -M 18.7 *
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Basin wide percent of average 134 131
SHOSHONE RIVER
BLACKWATER 9780 41.3 25.3 163 31.9 20.0 160
EVENING STAR 9200 43.6 30.1 145 43.1 25.2 171
KIRWIN 9550 16.5 11.4 145 17.8 12.7 140
MARQUETTE 8760 12.9 8.6 150 13.8 12.6 110
SYLVAN LAKE 8420 31.7 23.8 133 35.0 21.6 162
SYLVAN ROAD 8120 18.0 9.2 196 28.6 18.0 159
YOUNTS PEAK 8350 24.6 18.3 134 -M 18.7 *
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Basin wide percent of average 149 155
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.0 5.4 111 11.2 10.0 112
BONE SPRINGS DIV 9350 20.7 18.3 113 19.5 17.4 112
BURGESS JUNCTION 7880 16.0 13.2 121 15.9 13.7 116
CLOUD PEAK RESERVOIR 9860 20.2 17.3 117 17.8 16.2 110
DOME LAKE 8880 15.4 14.9 103 16.9 15.7 108
GRAVE SPRINGS 8550 12.8 -M * 13.1 11.7 112
HANSEN SAWMILL 8760 5.5 7.2 76 9.8 9.7 101
LOST CREEK 8080 18.9 15.5 122 18.0 14.3 126
MIDDLE POWDER 7760 18.5 14.3 129 16.8 14.1 119
POWDER RIVER PASS 9480 -M 11.0 * 15.5 14.0 111
SUCKER CREEK 8880 17.4 13.6 128 18.3 15.7 117
TIE CREEK 6870 6.8 -M * 14.9 13.1 114
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Basin wide percent of average 116 113
BELLE FOURCHE
BLIND PARK 6890 8.4 10.5 80 17.8 12.9 138
NORTH RAPID CREEK 6130 10.7 -M * 16.4 -M *
WARREN PEAK 6520 20.3 10.5 193 -M 9.8 *
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Basin wide percent of average 137 138*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.7 23.1 124 35.2 27.3 129
DIVIDE PEAK 8800 27.5 20.4 135 27.4 26.3 104
ELK RIVER 8700 27.7 18.0 154 28.1 21.4 131
JOE WRIGHT 10120 31.4 24.5 128 33.6 29.1 115
NORTH FRENCH CREEK 10100 37.8 28.9 131 32.2 27.0 119
OLD BATTLE 10000 44.4 37.2 119 41.8 34.4 122
SOUTH BRUSH CREEK 8400 11.9 11.7 102 19.4 19.6 99
TOWER 10500 58.8 50.2 117 54.1 41.6 130
WEBBER SPRINGS 9200 32.0 27.1 118 39.0 29.3 133
WILLOW CREEK PASS 9540 22.6 13.5 167 18.4 14.7 125
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Basin wide percent of average 127 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 39.8 28.9 138 31.5 22.8 138
CASPER MTN. 7900 23.6 18.3 129 23.2 17.7 131
CHRISTINA LAKE 9980 21.1 17.4 121 24.9 19.3 129
DEADMAN HILL 10220 20.2 18.5 109 21.4 20.1 106
LAPRELE CREEK 8320 13.7 7.9 173 16.3 14.0 116
RENO HILL 8400 24.1 14.3 169 23.3 21.7 107
ROACH 9700 25.6 18.1 141 25.0 24.7 101
SAND LAKE 10080 41.8 36.5 115 32.9 23.8 138
SOUTH PASS 9040 25.9 17.9 145 26.6 19.8 134
WINDY PEAK 7840 8.4 8.5 99 13.2 11.6 114
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Basin wide percent of average 131 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.4 7.5 125 30.4 17.8 171
DIVIDE PEAK 8800 27.5 20.4 135 27.4 26.3 104
OLD BATTLE 10000 44.4 37.2 119 41.8 34.4 122
SANDSTONE RS 8150 15.1 12.2 124 23.6 22.0 107
WHISKEY PARK 8950 40.9 30.1 136 36.7 32.6 113
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Basin wide percent of average 128 120
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.1 14.6 131 18.3 18.1 101
BLIND BULL SUM 8650 43.1 26.3 164 35.3 26.4 134
EAST RIM DIVIDE 7930 17.1 14.9 115 18.2 16.9 108
ELKHART PARK G.S. 9400 18.7 14.4 130 19.5 17.8 110
GROS VENTRE SUMMIT 8775 23.2 14.8 157 22.5 17.7 127
KENDALL R.S. 7740 21.0 11.7 179 24.6 17.2 143
LOOMIS PARK 8240 -M 15.9 * 28.6 20.9 137
NEW FORK LAKE 8340 13.6 9.8 139 14.0 16.0 88
SNIDER BASIN 8250 21.7 14.1 154 21.0 16.8 125
SPRING CREEK DIVIDE 9000 39.9 29.5 135 35.3 30.2 117
TRIPLE PEAK 8500 34.9 25.8 135 41.7 34.2 122
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Basin wide percent of average 143 120
LOWER GREEN RIVER
HAMS FORK 7840 13.2 5.7 232 17.0 14.8 115
HEWINTA 9500 9.9 6.9 143 15.8 15.6 101
HICKERSON PARK 9150 11.4 4.5 253 11.9 11.6 103
HOLE-IN-ROCK 9150 9.5 4.0 238 12.2 11.6 105
INDIAN CREEK 9425 42.0 29.6 142 34.4 28.6 120
KELLEY R.S. 8180 23.2 16.1 144 32.5 20.8 156
STEEL CREEK PARK 10100 18.5 18.5 100 18.1 15.3 118
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Basin wide percent of average 150 120
UPPER BEAR RIVER
BUG LAKE 7950 32.8 17.8 184 31.7 21.9 145
HAYDEN FORK 9400 15.5 8.4 185 27.4 22.1 124
KELLEY R.S. 8180 23.2 16.1 144 32.5 20.8 156
LILY LAKE 9050 17.2 10.5 164 21.5 17.3 124
MONTE CRISTO 8960 39.9 27.6 145 35.6 29.2 122
SALT RIVER SUMMIT 7600 20.9 12.1 173 25.4 18.8 135
TRIAL LAKE 9960 36.9 24.9 148 36.6 27.3 134
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Basin wide percent of average 159 134
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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.