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 SATURDAY: APRIL 26 , 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 27.5 12.4 222 37.6 24.8 152
COTTONWOOD CREEK 7600 31.5 21.0 150 36.4 27.8 131
GRANITE CREEK 6770 25.9 14.4 180 34.6 26.3 132
GRASSY LAKE 7265 46.8 35.1 133 58.5 41.3 142
GROS VENTRE SUMMIT 8775 23.4 14.6 160 22.5 17.8 126
LEWIS LAKE DIVIDE 7860 51.9 35.1 148 61.1 42.0 145
PHILLIPS BENCH 8200 41.3 29.9 138 49.3 33.1 149
SALT RIVER SUMMIT 7600 20.8 11.7 178 25.5 18.9 135
SNAKE RIVER STATION 6920 24.1 17.1 141 39.0 28.9 135
SPRING CREEK DIVIDE 9000 41.0 29.5 139 35.6 30.4 117
THUMB DIVIDE 7980 30.7 15.8 194 35.5 23.2 153
TOGWOTEE PASS 9580 36.7 27.9 132 36.7 31.4 117
TWO OCEAN PLATEAU 9360 48.4 27.3 177 -M 34.2 *
WILLOW CREEK 8450 42.8 31.8 135 48.5 35.7 136
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Basin wide percent of average 152 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.8 * 32.1 20.7 155
BLACK BEAR 7950 -M 39.9 * -M 45.6 *
CANYON 7940 22.6 11.7 193 -M 16.0 *
FISHER CREEK 9100 59.1 38.5 154 -M 41.4 *
MADISON PLATEAU 7750 44.2 24.4 181 44.6 29.4 152
NORTHEAST ENTRANCE 7350 9.8 6.9 142 21.5 13.6 158
PARKER PEAK 9400 35.0 23.5 149 -M 17.8 *
SYLVAN LAKE 8420 31.8 23.8 134 35.2 21.8 161
THUMB DIVIDE 7980 30.7 15.8 194 35.5 23.2 153
TWO OCEAN PLATEAU 9360 48.4 27.3 177 -M 34.2 *
WHISKEY CREEK 6800 23.8 16.1 148 33.7 24.4 138
WHITE MILL 8700 41.2 26.1 158 -M 32.0 *
WOLVERINE 7650 12.9 9.3 139 17.3 14.8 117
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Basin wide percent of average 161 149
WIND RIVER
BURROUGHS CREEK 8750 25.0 13.7 182 27.8 18.9 147
CHRISTINA LAKE 9980 21.6 17.6 123 26.4 19.6 135
COLD SPRINGS 9630 7.7 7.4 104 16.0 12.7 126
HOBBS PARK 10100 21.8 17.5 125 17.9 16.8 107
LITTLE WARM 9620 19.5 11.4 171 23.2 15.8 147
SOUTH PASS 9040 27.9 17.9 156 28.6 20.0 143
ST. LAWRENCE ALT 8620 10.9 5.9 185 14.8 12.1 122
TOGWOTEE PASS 9580 36.7 27.9 132 36.7 31.4 117
TOWNSEND CREEK 8700 13.0 9.8 133 17.1 15.0 114
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Basin wide percent of average 143 128
BIGHORN BASIN
BALD MTN. 9375 24.9 23.5 106 21.0 20.2 104
BEAR TRAP MEADOW 7900 5.9 5.0 118 11.5 10.2 113
BLACKWATER 9780 41.5 25.4 163 32.3 20.2 160
BONE SPRINGS DIV 9350 21.2 18.3 116 19.5 17.6 111
EVENING STAR 9200 44.0 30.3 145 43.7 25.4 172
GRAVE SPRINGS 8550 13.0 -M * 13.3 11.9 112
KIRWIN 9550 16.9 11.5 147 18.4 12.9 143
LOST CREEK 8080 19.6 15.6 126 18.4 14.5 127
MARQUETTE 8760 13.5 8.6 157 14.3 12.8 112
MIDDLE POWDER 7760 18.8 14.4 131 17.0 14.3 119
OWL CREEK 8975 7.4 3.8 195 8.2 7.8 105
POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.2 111
SHELL CREEK 9580 20.0 16.8 119 17.2 15.4 112
SYLVAN LAKE 8420 31.8 23.8 134 35.2 21.8 161
SYLVAN ROAD 8120 18.0 8.8 205 28.9 18.2 159
TIMBER CREEK 7950 7.4 6.2 119 10.3 9.5 108
YOUNTS PEAK 8350 24.7 18.3 135 -M 18.9 *
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Basin wide percent of average 137 132
SHOSHONE RIVER
BLACKWATER 9780 41.5 25.4 163 32.3 20.2 160
EVENING STAR 9200 44.0 30.3 145 43.7 25.4 172
KIRWIN 9550 16.9 11.5 147 18.4 12.9 143
MARQUETTE 8760 13.5 8.6 157 14.3 12.8 112
SYLVAN LAKE 8420 31.8 23.8 134 35.2 21.8 161
SYLVAN ROAD 8120 18.0 8.8 205 28.9 18.2 159
YOUNTS PEAK 8350 24.7 18.3 135 -M 18.9 *
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Basin wide percent of average 150 155
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.9 5.0 118 11.5 10.2 113
BONE SPRINGS DIV 9350 21.2 18.3 116 19.5 17.6 111
BURGESS JUNCTION 7880 16.2 13.3 122 16.1 13.9 116
CLOUD PEAK RESERVOIR 9860 20.7 17.4 119 18.3 16.5 111
DOME LAKE 8880 15.6 14.9 105 17.1 15.9 108
GRAVE SPRINGS 8550 13.0 -M * 13.3 11.9 112
HANSEN SAWMILL 8760 5.8 7.1 82 10.2 9.9 103
LOST CREEK 8080 19.6 15.6 126 18.4 14.5 127
MIDDLE POWDER 7760 18.8 14.4 131 17.0 14.3 119
POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.2 111
SUCKER CREEK 8880 17.5 13.6 129 18.6 15.9 117
TIE CREEK 6870 7.0 -M * 15.2 13.3 114
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Basin wide percent of average 118 114
BELLE FOURCHE
BLIND PARK 6890 8.1 10.2 79 17.8 13.2 135
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 20.5 10.2 201 -M 9.9 *
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Basin wide percent of average 140 135*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.6 22.8 125 35.4 27.5 129
DIVIDE PEAK 8800 28.3 20.1 141 27.4 26.6 103
ELK RIVER 8700 27.9 17.5 159 28.3 21.6 131
JOE WRIGHT 10120 32.5 24.5 133 34.2 29.4 116
NORTH FRENCH CREEK 10100 38.8 29.0 134 32.9 27.3 121
OLD BATTLE 10000 44.4 37.5 118 41.9 34.8 120
SOUTH BRUSH CREEK 8400 11.3 11.4 99 19.5 19.9 98
TOWER 10500 59.2 50.4 117 54.5 42.0 130
WEBBER SPRINGS 9200 31.9 26.8 119 39.1 29.7 132
WILLOW CREEK PASS 9540 22.7 13.5 168 18.4 14.9 123
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Basin wide percent of average 128 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 40.6 28.9 140 32.4 23.1 140
CASPER MTN. 7900 24.2 18.2 133 23.9 18.0 133
CHRISTINA LAKE 9980 21.6 17.6 123 26.4 19.6 135
DEADMAN HILL 10220 22.0 18.7 118 22.4 20.4 110
LAPRELE CREEK 8320 13.0 7.5 173 16.3 14.2 115
RENO HILL 8400 24.0 14.1 170 23.7 21.9 108
ROACH 9700 25.8 18.1 143 25.2 25.0 101
SAND LAKE 10080 43.1 36.7 117 33.9 24.1 141
SOUTH PASS 9040 27.9 17.9 156 28.6 20.0 143
WINDY PEAK 7840 8.0 8.3 96 13.3 11.8 113
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Basin wide percent of average 135 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.1 6.7 121 30.4 18.0 169
DIVIDE PEAK 8800 28.3 20.1 141 27.4 26.6 103
OLD BATTLE 10000 44.4 37.5 118 41.9 34.8 120
SANDSTONE RS 8150 14.3 11.5 124 23.5 22.3 105
WHISKEY PARK 8950 42.3 29.9 141 36.8 33.0 112
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Basin wide percent of average 130 119
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.7 14.4 130 18.3 18.2 101
BLIND BULL SUM 8650 43.2 25.3 171 35.3 26.5 133
EAST RIM DIVIDE 7930 16.9 14.9 113 18.2 17.0 107
ELKHART PARK G.S. 9400 18.7 14.3 131 19.6 17.9 109
GROS VENTRE SUMMIT 8775 23.4 14.6 160 22.5 17.8 126
KENDALL R.S. 7740 20.1 11.4 176 24.5 17.3 142
LOOMIS PARK 8240 -M 15.7 * 28.6 21.1 136
NEW FORK LAKE 8340 13.2 9.6 138 14.0 16.1 87
SNIDER BASIN 8250 22.0 13.8 159 21.1 16.9 125
SPRING CREEK DIVIDE 9000 41.0 29.5 139 35.6 30.4 117
TRIPLE PEAK 8500 35.4 25.6 138 41.8 34.5 121
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Basin wide percent of average 146 120
LOWER GREEN RIVER
HAMS FORK 7840 13.8 5.7 242 17.8 15.0 119
HEWINTA 9500 9.9 6.5 152 16.1 15.8 102
HICKERSON PARK 9150 11.6 4.1 283 12.0 11.8 102
HOLE-IN-ROCK 9150 9.6 3.5 274 12.3 11.8 104
INDIAN CREEK 9425 42.4 29.4 144 34.9 28.8 121
KELLEY R.S. 8180 23.2 15.8 147 33.0 21.0 157
STEEL CREEK PARK 10100 18.9 18.6 102 18.4 15.6 118
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Basin wide percent of average 155 121
UPPER BEAR RIVER
BUG LAKE 7950 34.3 17.2 199 32.9 22.1 149
HAYDEN FORK 9400 15.5 7.9 196 27.6 22.4 123
KELLEY R.S. 8180 23.2 15.8 147 33.0 21.0 157
LILY LAKE 9050 16.5 10.0 165 21.8 17.5 125
MONTE CRISTO 8960 41.3 27.2 152 37.0 29.5 125
SALT RIVER SUMMIT 7600 20.8 11.7 178 25.5 18.9 135
TRIAL LAKE 9960 36.9 24.6 150 36.5 27.6 132
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Basin wide percent of average 165 135
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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.