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 12 , 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 30.5 16.4 186 35.5 23.7 150
COTTONWOOD CREEK 7600 31.8 23.6 135 33.7 26.6 127
GRANITE CREEK 6770 29.2 18.0 162 33.4 25.0 134
GRASSY LAKE 7265 48.0 37.5 128 53.1 39.5 134
GROS VENTRE SUMMIT 8775 23.4 16.0 146 21.7 17.0 128
LEWIS LAKE DIVIDE 7860 52.0 36.6 142 45.7 40.1 114
PHILLIPS BENCH 8200 44.1 30.6 144 46.4 31.7 146
SALT RIVER SUMMIT 7600 22.3 14.0 159 24.5 18.0 136
SNAKE RIVER STATION 6920 28.8 18.6 155 37.1 27.7 134
SPRING CREEK DIVIDE 9000 37.6 29.2 129 33.6 29.1 115
THUMB DIVIDE 7980 32.3 17.4 186 33.8 22.1 153
TOGWOTEE PASS 9580 35.4 26.6 133 34.6 30.1 115
TWO OCEAN PLATEAU 9360 46.3 26.6 174 -M 32.6 *
WILLOW CREEK 8450 40.9 31.4 130 45.3 34.1 133
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Basin wide percent of average 147 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 36.2 25.1 144 31.0 19.3 161
BLACK BEAR 7950 -M 39.8 * -M 43.2 *
CANYON 7940 24.0 13.4 179 27.0 15.1 179
FISHER CREEK 9100 56.5 37.5 151 -M 39.0 *
MADISON PLATEAU 7750 42.8 25.4 169 42.8 27.9 153
NORTHEAST ENTRANCE 7350 13.1 9.0 146 19.6 12.6 156
PARKER PEAK 9400 32.8 22.9 143 -M 16.6 *
SYLVAN LAKE 8420 32.3 23.6 137 33.6 20.4 165
THUMB DIVIDE 7980 32.3 17.4 186 33.8 22.1 153
TWO OCEAN PLATEAU 9360 46.3 26.6 174 -M 32.6 *
WHISKEY CREEK 6800 25.5 18.1 141 32.3 23.2 139
WHITE MILL 8700 38.6 25.7 150 -M 30.1 *
WOLVERINE 7650 12.7 11.8 108 16.2 13.7 118
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Basin wide percent of average 153 153
WIND RIVER
BURROUGHS CREEK 8750 24.4 15.2 161 26.5 17.7 150
CHRISTINA LAKE 9980 20.8 16.4 127 24.0 18.0 133
COLD SPRINGS 9630 10.5 8.6 122 13.4 11.5 117
HOBBS PARK 10100 18.9 16.2 117 15.2 15.3 99
LITTLE WARM 9620 18.4 13.1 140 21.0 14.4 146
SOUTH PASS 9040 26.4 17.3 153 26.1 18.4 142
ST. LAWRENCE ALT 8620 9.9 7.2 138 12.4 11.0 113
TOGWOTEE PASS 9580 35.4 26.6 133 34.6 30.1 115
TOWNSEND CREEK 8700 11.2 10.3 109 13.7 13.6 101
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Basin wide percent of average 134 125
BIGHORN BASIN
BALD MTN. 9375 23.7 21.9 108 20.1 18.6 108
BEAR TRAP MEADOW 7900 6.6 7.0 94 9.6 9.1 105
BLACKWATER 9780 39.1 24.2 162 30.0 19.0 158
BONE SPRINGS DIV 9350 20.1 17.8 113 18.5 16.2 114
EVENING STAR 9200 42.4 28.8 147 41.1 23.9 172
GRAVE SPRINGS 8550 13.3 -M * 12.6 10.6 119
KIRWIN 9550 15.3 10.9 140 17.0 11.7 145
LOST CREEK 8080 18.3 14.9 123 17.3 13.0 133
MARQUETTE 8760 12.9 8.6 150 13.0 11.0 118
MIDDLE POWDER 7760 19.1 13.3 144 16.0 12.9 124
OWL CREEK 8975 8.6 4.7 183 7.0 6.9 101
POWDER RIVER PASS 9480 -M 11.5 * 14.5 12.7 114
SHELL CREEK 9580 19.1 15.9 120 16.2 14.1 115
SYLVAN LAKE 8420 32.3 23.6 137 33.6 20.4 165
SYLVAN ROAD 8120 21.2 11.2 189 27.7 17.1 162
TIMBER CREEK 7950 7.6 6.5 117 9.1 8.1 112
YOUNTS PEAK 8350 24.9 18.1 138 28.6 17.7 162
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Basin wide percent of average 137 137
SHOSHONE RIVER
BLACKWATER 9780 39.1 24.2 162 30.0 19.0 158
EVENING STAR 9200 42.4 28.8 147 41.1 23.9 172
KIRWIN 9550 15.3 10.9 140 17.0 11.7 145
MARQUETTE 8760 12.9 8.6 150 13.0 11.0 118
SYLVAN LAKE 8420 32.3 23.6 137 33.6 20.4 165
SYLVAN ROAD 8120 21.2 11.2 189 27.7 17.1 162
YOUNTS PEAK 8350 24.9 18.1 138 28.6 17.7 162
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Basin wide percent of average 150 158
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.6 7.0 94 9.6 9.1 105
BONE SPRINGS DIV 9350 20.1 17.8 113 18.5 16.2 114
BURGESS JUNCTION 7880 15.6 12.7 123 15.1 12.6 120
CLOUD PEAK RESERVOIR 9860 19.5 16.4 119 16.9 14.7 115
DOME LAKE 8880 15.1 14.6 103 16.5 14.4 115
GRAVE SPRINGS 8550 13.3 -M * 12.6 10.6 119
HANSEN SAWMILL 8760 6.9 7.5 92 9.3 8.8 106
LOST CREEK 8080 18.3 14.9 123 17.3 13.0 133
MIDDLE POWDER 7760 19.1 13.3 144 16.0 12.9 124
POWDER RIVER PASS 9480 -M 11.5 * 14.5 12.7 114
SUCKER CREEK 8880 17.4 13.1 133 17.5 14.3 122
TIE CREEK 6870 7.5 -M * 14.1 12.0 118
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Basin wide percent of average 118 118
BELLE FOURCHE
BLIND PARK 6890 11.3 11.5 98 16.9 11.4 148
NORTH RAPID CREEK 6130 12.0 -M * 15.1 -M *
WARREN PEAK 6520 21.0 11.5 183 -M 8.8 *
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Basin wide percent of average 140 148*
UPPER N. PLATTE RIVER
COLUMBINE 9400 30.8 24.5 126 34.1 25.8 132
DIVIDE PEAK 8800 29.3 21.7 135 26.4 24.5 108
ELK RIVER 8700 29.5 20.3 145 27.0 20.3 133
JOE WRIGHT 10120 28.6 23.8 120 31.3 26.9 116
NORTH FRENCH CREEK 10100 37.0 27.6 134 -M 25.2 *
OLD BATTLE 10000 43.8 35.0 125 40.7 32.2 126
SOUTH BRUSH CREEK 8400 13.9 13.1 106 19.0 17.9 106
TOWER 10500 58.0 48.2 120 48.3 38.8 124
WEBBER SPRINGS 9200 33.1 28.5 116 38.6 27.2 142
WILLOW CREEK PASS 9540 22.0 13.2 167 17.2 13.6 126
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Basin wide percent of average 127 124
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 37.4 28.4 132 28.5 21.0 136
CASPER MTN. 7900 25.3 18.5 137 22.6 15.8 143
CHRISTINA LAKE 9980 20.8 16.4 127 24.0 18.0 133
DEADMAN HILL 10220 18.1 17.5 103 20.2 18.3 110
LAPRELE CREEK 8320 15.7 10.1 155 16.0 12.9 124
RENO HILL 8400 26.3 15.3 172 22.7 20.4 111
ROACH 9700 24.4 18.0 136 24.3 22.8 107
SAND LAKE 10080 40.7 35.1 116 31.5 22.0 143
SOUTH PASS 9040 26.4 17.3 153 26.1 18.4 142
WINDY PEAK 7840 11.0 9.2 120 12.3 10.5 117
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Basin wide percent of average 132 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.2 11.0 147 28.7 16.5 174
DIVIDE PEAK 8800 29.3 21.7 135 26.4 24.5 108
OLD BATTLE 10000 43.8 35.0 125 40.7 32.2 126
SANDSTONE RS 8150 19.7 15.2 130 23.0 20.2 114
WHISKEY PARK 8950 40.9 30.3 135 33.8 30.3 112
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Basin wide percent of average 132 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.5 15.3 127 17.6 17.3 102
BLIND BULL SUM 8650 44.1 30.7 144 33.8 25.4 133
EAST RIM DIVIDE 7930 17.3 14.8 117 17.6 16.2 109
ELKHART PARK G.S. 9400 18.4 14.8 124 19.0 17.0 112
GROS VENTRE SUMMIT 8775 23.4 16.0 146 21.7 17.0 128
KENDALL R.S. 7740 24.0 13.4 179 23.9 16.5 145
LOOMIS PARK 8240 -M 17.1 * 27.8 20.1 138
NEW FORK LAKE 8340 15.6 10.8 144 13.6 15.4 88
SNIDER BASIN 8250 23.8 15.4 155 19.8 16.1 123
SPRING CREEK DIVIDE 9000 37.6 29.2 129 33.6 29.1 115
TRIPLE PEAK 8500 36.7 26.7 137 38.3 32.9 116
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Basin wide percent of average 139 120
LOWER GREEN RIVER
HAMS FORK 7840 15.8 7.1 223 15.2 14.2 107
HEWINTA 9500 13.3 9.5 140 15.3 14.3 107
HICKERSON PARK 9150 12.3 6.7 184 11.2 10.5 107
HOLE-IN-ROCK 9150 11.2 6.3 178 11.7 10.5 111
INDIAN CREEK 9425 40.3 30.1 134 32.4 27.6 117
KELLEY R.S. 8180 25.0 17.5 143 26.2 20.0 131
STEEL CREEK PARK 10100 17.4 17.6 99 17.0 14.0 121
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Basin wide percent of average 143 116
UPPER BEAR RIVER
BUG LAKE 7950 34.4 20.3 169 30.3 20.7 146
HAYDEN FORK 9400 19.8 12.0 165 26.2 20.5 128
KELLEY R.S. 8180 25.0 17.5 143 26.2 20.0 131
LILY LAKE 9050 19.2 13.0 148 20.6 16.0 129
MONTE CRISTO 8960 42.2 29.4 144 34.1 27.4 124
SALT RIVER SUMMIT 7600 22.3 14.0 159 24.5 18.0 136
TRIAL LAKE 9960 36.1 25.8 140 35.5 25.6 139
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Basin wide percent of average 151 133
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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.