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 SUNDAY: APRIL 13 , 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 30.8 16.3 189 35.5 23.8 149
COTTONWOOD CREEK 7600 31.9 23.5 136 33.8 26.7 127
GRANITE CREEK 6770 29.3 17.9 164 33.4 25.1 133
GRASSY LAKE 7265 48.2 37.6 128 53.1 39.6 134
GROS VENTRE SUMMIT 8775 23.6 16.0 148 21.8 17.0 128
LEWIS LAKE DIVIDE 7860 52.1 36.6 142 45.7 40.3 113
PHILLIPS BENCH 8200 43.9 30.7 143 46.4 31.8 146
SALT RIVER SUMMIT 7600 22.4 13.9 161 24.5 18.1 135
SNAKE RIVER STATION 6920 29.0 18.6 156 37.1 27.8 133
SPRING CREEK DIVIDE 9000 37.6 29.2 129 33.6 29.2 115
THUMB DIVIDE 7980 32.3 17.4 186 33.8 22.2 152
TOGWOTEE PASS 9580 35.5 26.7 133 34.6 30.2 115
TWO OCEAN PLATEAU 9360 46.3 26.6 174 -M 32.7 *
WILLOW CREEK 8450 41.3 31.5 131 45.4 34.2 133
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Basin wide percent of average 147 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 36.3 25.3 143 31.1 19.4 160
BLACK BEAR 7950 -M 40.0 * -M 43.4 *
CANYON 7940 23.9 13.4 178 26.9 15.2 177
FISHER CREEK 9100 56.4 37.6 150 -M 39.1 *
MADISON PLATEAU 7750 42.7 25.5 167 42.9 28.0 153
NORTHEAST ENTRANCE 7350 12.8 9.0 142 19.5 12.7 154
PARKER PEAK 9400 32.8 23.0 143 -M 16.7 *
SYLVAN LAKE 8420 32.2 23.7 136 33.6 20.5 164
THUMB DIVIDE 7980 32.3 17.4 186 33.8 22.2 152
TWO OCEAN PLATEAU 9360 46.3 26.6 174 -M 32.7 *
WHISKEY CREEK 6800 25.3 18.1 140 32.2 23.3 138
WHITE MILL 8700 38.7 25.7 151 -M 30.3 *
WOLVERINE 7650 12.9 11.8 109 16.4 13.8 119
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Basin wide percent of average 153 152
WIND RIVER
BURROUGHS CREEK 8750 24.3 15.3 159 26.6 17.8 149
CHRISTINA LAKE 9980 20.8 16.5 126 24.0 18.1 133
COLD SPRINGS 9630 10.7 8.7 123 13.4 11.6 116
HOBBS PARK 10100 19.0 16.3 117 15.5 15.4 101
LITTLE WARM 9620 18.7 13.2 142 21.1 14.5 146
SOUTH PASS 9040 26.4 17.4 152 26.1 18.5 141
ST. LAWRENCE ALT 8620 10.0 7.2 139 12.4 11.1 112
TOGWOTEE PASS 9580 35.5 26.7 133 34.6 30.2 115
TOWNSEND CREEK 8700 11.2 10.3 109 13.6 13.7 99
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Basin wide percent of average 134 124
BIGHORN BASIN
BALD MTN. 9375 23.7 22.0 108 20.1 18.8 107
BEAR TRAP MEADOW 7900 6.6 6.9 96 9.8 9.2 107
BLACKWATER 9780 39.4 24.4 161 30.1 19.1 158
BONE SPRINGS DIV 9350 20.2 17.9 113 18.5 16.3 113
EVENING STAR 9200 42.7 28.9 148 41.1 24.0 171
GRAVE SPRINGS 8550 13.2 -M * 12.6 10.7 118
KIRWIN 9550 15.5 10.9 142 17.1 11.8 145
LOST CREEK 8080 18.5 15.0 123 17.4 13.1 133
MARQUETTE 8760 13.0 8.6 151 13.1 11.1 118
MIDDLE POWDER 7760 19.1 13.4 143 16.1 13.0 124
OWL CREEK 8975 9.0 4.7 191 7.2 7.0 103
POWDER RIVER PASS 9480 -M 11.5 * 14.6 12.8 114
SHELL CREEK 9580 19.2 16.0 120 16.2 14.2 114
SYLVAN LAKE 8420 32.2 23.7 136 33.6 20.5 164
SYLVAN ROAD 8120 21.2 11.0 193 27.6 17.2 160
TIMBER CREEK 7950 7.7 6.6 117 9.1 8.2 111
YOUNTS PEAK 8350 24.9 18.2 137 28.5 17.7 161
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Basin wide percent of average 137 136
SHOSHONE RIVER
BLACKWATER 9780 39.4 24.4 161 30.1 19.1 158
EVENING STAR 9200 42.7 28.9 148 41.1 24.0 171
KIRWIN 9550 15.5 10.9 142 17.1 11.8 145
MARQUETTE 8760 13.0 8.6 151 13.1 11.1 118
SYLVAN LAKE 8420 32.2 23.7 136 33.6 20.5 164
SYLVAN ROAD 8120 21.2 11.0 193 27.6 17.2 160
YOUNTS PEAK 8350 24.9 18.2 137 28.5 17.7 161
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Basin wide percent of average 150 157
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.6 6.9 96 9.8 9.2 107
BONE SPRINGS DIV 9350 20.2 17.9 113 18.5 16.3 113
BURGESS JUNCTION 7880 15.8 12.7 124 15.3 12.7 120
CLOUD PEAK RESERVOIR 9860 19.7 16.5 119 16.9 14.8 114
DOME LAKE 8880 14.4 14.7 98 16.5 14.5 114
GRAVE SPRINGS 8550 13.2 -M * 12.6 10.7 118
HANSEN SAWMILL 8760 6.8 7.5 91 9.3 8.9 104
LOST CREEK 8080 18.5 15.0 123 17.4 13.1 133
MIDDLE POWDER 7760 19.1 13.4 143 16.1 13.0 124
POWDER RIVER PASS 9480 -M 11.5 * 14.6 12.8 114
SUCKER CREEK 8880 17.5 13.1 134 17.7 14.5 122
TIE CREEK 6870 7.5 -M * 14.2 12.1 117
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Basin wide percent of average 118 117
BELLE FOURCHE
BLIND PARK 6890 11.3 11.5 98 16.9 11.5 147
NORTH RAPID CREEK 6130 12.0 -M * 15.0 -M *
WARREN PEAK 6520 21.1 11.5 183 -M 8.9 *
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Basin wide percent of average 141 147*
UPPER N. PLATTE RIVER
COLUMBINE 9400 30.7 24.5 125 34.4 25.9 133
DIVIDE PEAK 8800 29.3 21.7 135 26.8 24.6 109
ELK RIVER 8700 29.5 20.3 145 27.1 20.4 133
JOE WRIGHT 10120 28.8 23.9 121 31.6 27.1 117
NORTH FRENCH CREEK 10100 37.0 27.8 133 -M 25.3 *
OLD BATTLE 10000 43.9 35.3 124 40.7 32.4 126
SOUTH BRUSH CREEK 8400 13.9 13.1 106 19.1 18.0 106
TOWER 10500 58.1 48.5 120 48.3 39.0 124
WEBBER SPRINGS 9200 33.1 28.6 116 38.6 27.4 141
WILLOW CREEK PASS 9540 22.0 13.3 165 17.3 13.7 126
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Basin wide percent of average 127 124
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 37.5 28.6 131 28.7 21.2 135
CASPER MTN. 7900 25.3 18.7 135 22.7 15.9 143
CHRISTINA LAKE 9980 20.8 16.5 126 24.0 18.1 133
DEADMAN HILL 10220 18.2 17.6 103 20.3 18.5 110
LAPRELE CREEK 8320 15.5 10.1 153 16.0 13.0 123
RENO HILL 8400 26.3 15.3 172 23.0 20.5 112
ROACH 9700 24.4 18.0 136 24.4 23.0 106
SAND LAKE 10080 40.7 35.3 115 31.5 22.1 143
SOUTH PASS 9040 26.4 17.4 152 26.1 18.5 141
WINDY PEAK 7840 11.1 9.2 121 12.6 10.6 119
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Basin wide percent of average 132 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.8 11.0 153 28.9 16.6 174
DIVIDE PEAK 8800 29.3 21.7 135 26.8 24.6 109
OLD BATTLE 10000 43.9 35.3 124 40.7 32.4 126
SANDSTONE RS 8150 19.8 15.3 129 23.1 20.4 113
WHISKEY PARK 8950 41.1 30.5 135 33.7 30.5 110
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Basin wide percent of average 133 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.8 15.3 129 17.6 17.4 101
BLIND BULL SUM 8650 44.2 30.8 144 33.8 25.5 133
EAST RIM DIVIDE 7930 17.4 14.9 117 17.6 16.2 109
ELKHART PARK G.S. 9400 18.6 14.8 126 19.4 17.1 113
GROS VENTRE SUMMIT 8775 23.6 16.0 148 21.8 17.0 128
KENDALL R.S. 7740 24.5 13.3 184 24.0 16.6 145
LOOMIS PARK 8240 -M 17.0 * 27.8 20.1 138
NEW FORK LAKE 8340 16.1 10.8 149 13.5 15.4 88
SNIDER BASIN 8250 23.9 15.4 155 19.8 16.2 122
SPRING CREEK DIVIDE 9000 37.6 29.2 129 33.6 29.2 115
TRIPLE PEAK 8500 36.6 26.8 137 38.3 33.0 116
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Basin wide percent of average 140 119
LOWER GREEN RIVER
HAMS FORK 7840 15.9 6.6 241 15.2 14.3 106
HEWINTA 9500 14.1 9.4 150 15.2 14.4 106
HICKERSON PARK 9150 12.6 6.6 191 11.2 10.6 106
HOLE-IN-ROCK 9150 11.8 6.2 190 11.7 10.6 110
INDIAN CREEK 9425 40.3 30.2 133 32.4 27.6 117
KELLEY R.S. 8180 25.1 17.6 143 26.1 20.0 131
STEEL CREEK PARK 10100 17.4 17.7 98 17.0 14.1 121
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Basin wide percent of average 145 115
UPPER BEAR RIVER
BUG LAKE 7950 34.4 20.2 170 30.2 20.8 145
HAYDEN FORK 9400 20.4 11.6 176 26.2 20.7 127
KELLEY R.S. 8180 25.1 17.6 143 26.1 20.0 131
LILY LAKE 9050 19.4 13.0 149 20.6 16.1 128
MONTE CRISTO 8960 42.4 29.4 144 34.1 27.5 124
SALT RIVER SUMMIT 7600 22.4 13.9 161 24.5 18.1 135
TRIAL LAKE 9960 36.5 25.9 141 35.5 25.7 138
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Basin wide percent of average 152 132
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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.