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 27 , 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 27.0 12.0 225 37.7 24.9 151
COTTONWOOD CREEK 7600 31.5 20.8 151 36.4 27.9 130
GRANITE CREEK 6770 -M 14.1 * -M 26.4 *
GRASSY LAKE 7265 46.9 34.9 134 58.5 41.4 141
GROS VENTRE SUMMIT 8775 23.3 14.4 162 22.5 17.9 126
LEWIS LAKE DIVIDE 7860 52.6 35.0 150 61.2 42.1 145
PHILLIPS BENCH 8200 41.6 29.9 139 49.3 33.2 148
SALT RIVER SUMMIT 7600 20.7 11.6 178 25.6 18.9 135
SNAKE RIVER STATION 6920 23.0 16.9 136 39.0 29.0 134
SPRING CREEK DIVIDE 9000 40.2 29.6 136 35.7 30.4 117
THUMB DIVIDE 7980 30.9 15.7 197 35.5 23.3 152
TOGWOTEE PASS 9580 36.4 28.0 130 37.0 31.5 117
TWO OCEAN PLATEAU 9360 -M 27.4 * -M 34.3 *
WILLOW CREEK 8450 42.6 31.9 134 48.6 35.8 136
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Basin wide percent of average 148 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.9 * 32.2 20.8 155
BLACK BEAR 7950 -M 39.9 * -M 45.8 *
CANYON 7940 -M 11.6 * -M 16.0 *
FISHER CREEK 9100 59.1 38.5 154 -M 41.5 *
MADISON PLATEAU 7750 44.0 24.3 181 44.6 29.5 151
NORTHEAST ENTRANCE 7350 9.5 6.7 142 21.5 13.6 158
PARKER PEAK 9400 35.0 23.6 148 -M 17.9 *
SYLVAN LAKE 8420 -M 23.8 * -M 21.9 *
THUMB DIVIDE 7980 30.9 15.7 197 35.5 23.3 152
TWO OCEAN PLATEAU 9360 -M 27.4 * -M 34.3 *
WHISKEY CREEK 6800 23.5 15.9 148 33.7 24.5 138
WHITE MILL 8700 -M 26.2 * -M 32.1 *
WOLVERINE 7650 -M 9.0 * -M 14.9 *
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Basin wide percent of average 162* 150*
WIND RIVER
BURROUGHS CREEK 8750 24.5 13.5 181 27.9 19.0 147
CHRISTINA LAKE 9980 22.3 17.7 126 26.5 19.7 135
COLD SPRINGS 9630 7.8 7.3 107 16.0 12.8 125
HOBBS PARK 10100 22.0 17.6 125 17.9 16.9 106
LITTLE WARM 9620 19.4 11.2 173 23.2 15.9 146
SOUTH PASS 9040 27.9 18.0 155 28.7 20.1 143
ST. LAWRENCE ALT 8620 10.8 5.8 186 14.9 12.2 122
TOGWOTEE PASS 9580 36.4 28.0 130 37.0 31.5 117
TOWNSEND CREEK 8700 12.9 9.7 133 17.1 15.1 113
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Basin wide percent of average 143 128
BIGHORN BASIN
BALD MTN. 9375 25.0 23.7 105 21.0 20.3 103
BEAR TRAP MEADOW 7900 5.5 4.9 112 11.4 10.3 111
BLACKWATER 9780 41.7 25.4 164 32.4 20.3 160
BONE SPRINGS DIV 9350 20.8 18.3 114 19.6 17.7 111
EVENING STAR 9200 -M 30.4 * -M 25.5 *
GRAVE SPRINGS 8550 12.9 -M * 13.4 12.0 112
KIRWIN 9550 16.9 11.6 146 18.4 13.0 142
LOST CREEK 8080 19.6 15.7 125 18.4 14.6 126
MARQUETTE 8760 13.7 8.6 159 14.5 13.0 112
MIDDLE POWDER 7760 18.8 14.5 130 17.1 14.4 119
OWL CREEK 8975 7.3 3.7 197 8.2 7.8 105
POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.3 110
SHELL CREEK 9580 20.2 16.8 120 17.2 15.5 111
SYLVAN LAKE 8420 -M 23.8 * -M 21.9 *
SYLVAN ROAD 8120 17.0 8.6 198 28.8 18.3 157
TIMBER CREEK 7950 7.4 6.2 119 10.3 9.6 107
YOUNTS PEAK 8350 -M 18.3 * -M 19.0 *
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Basin wide percent of average 135 123
SHOSHONE RIVER
BLACKWATER 9780 41.7 25.4 164 32.4 20.3 160
EVENING STAR 9200 -M 30.4 * -M 25.5 *
KIRWIN 9550 16.9 11.6 146 18.4 13.0 142
MARQUETTE 8760 13.7 8.6 159 14.5 13.0 112
SYLVAN LAKE 8420 -M 23.8 * -M 21.9 *
SYLVAN ROAD 8120 17.0 8.6 198 28.8 18.3 157
YOUNTS PEAK 8350 -M 18.3 * -M 19.0 *
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Basin wide percent of average 165 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.5 4.9 112 11.4 10.3 111
BONE SPRINGS DIV 9350 20.8 18.3 114 19.6 17.7 111
BURGESS JUNCTION 7880 16.2 13.4 121 16.1 14.0 115
CLOUD PEAK RESERVOIR 9860 20.8 17.5 119 18.3 16.6 110
DOME LAKE 8880 15.5 15.0 103 17.1 16.0 107
GRAVE SPRINGS 8550 12.9 -M * 13.4 12.0 112
HANSEN SAWMILL 8760 -M 7.1 * -M 10.0 *
LOST CREEK 8080 19.6 15.7 125 18.4 14.6 126
MIDDLE POWDER 7760 18.8 14.5 130 17.1 14.4 119
POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.3 110
SUCKER CREEK 8880 17.8 13.7 130 18.7 16.0 117
TIE CREEK 6870 6.8 -M * 15.2 13.4 113
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Basin wide percent of average 119 114
BELLE FOURCHE
BLIND PARK 6890 -M 10.1 * -M 13.3 *
NORTH RAPID CREEK 6130 10.8 -M * 16.5 -M *
WARREN PEAK 6520 -M 10.1 * -M 10.0 *
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Basin wide percent of average * *
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.4 22.7 125 35.3 27.6 128
DIVIDE PEAK 8800 27.2 19.9 137 27.3 26.7 102
ELK RIVER 8700 27.2 17.2 158 28.4 21.7 131
JOE WRIGHT 10120 32.8 24.6 133 34.4 29.6 116
NORTH FRENCH CREEK 10100 38.7 29.1 133 32.9 27.4 120
OLD BATTLE 10000 44.9 37.6 119 42.0 35.0 120
SOUTH BRUSH CREEK 8400 11.2 11.2 100 19.5 20.0 98
TOWER 10500 59.4 50.6 117 54.7 42.3 129
WEBBER SPRINGS 9200 -M 26.7 * -M 29.9 *
WILLOW CREEK PASS 9540 23.1 13.5 171 18.5 15.0 123
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Basin wide percent of average 129 119
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M 28.9 * -M 23.2 *
CASPER MTN. 7900 -M 18.1 * -M 18.2 *
CHRISTINA LAKE 9980 22.3 17.7 126 26.5 19.7 135
DEADMAN HILL 10220 22.2 18.8 118 22.5 20.5 110
LAPRELE CREEK 8320 12.8 7.2 178 16.3 14.3 114
RENO HILL 8400 24.3 13.9 175 23.8 22.0 108
ROACH 9700 25.9 18.1 143 25.5 25.2 101
SAND LAKE 10080 43.5 36.8 118 34.0 24.2 140
SOUTH PASS 9040 27.9 18.0 155 28.7 20.1 143
WINDY PEAK 7840 8.0 8.3 96 13.3 11.8 113
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Basin wide percent of average 135 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.4 6.3 117 30.4 18.1 168
DIVIDE PEAK 8800 27.2 19.9 137 27.3 26.7 102
OLD BATTLE 10000 44.9 37.6 119 42.0 35.0 120
SANDSTONE RS 8150 14.1 11.2 126 23.5 22.4 105
WHISKEY PARK 8950 41.5 29.9 139 36.8 33.2 111
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Basin wide percent of average 129 118
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.6 14.3 130 18.3 18.2 101
BLIND BULL SUM 8650 43.3 24.8 175 35.4 26.6 133
EAST RIM DIVIDE 7930 16.7 14.9 112 18.2 17.1 106
ELKHART PARK G.S. 9400 18.7 14.2 132 19.6 17.9 109
GROS VENTRE SUMMIT 8775 23.3 14.4 162 22.5 17.9 126
KENDALL R.S. 7740 19.6 11.2 175 24.5 17.4 141
LOOMIS PARK 8240 -M 15.6 * 28.6 21.1 136
NEW FORK LAKE 8340 -M 9.5 * -M 16.2 *
SNIDER BASIN 8250 21.8 13.6 160 21.2 17.0 125
SPRING CREEK DIVIDE 9000 40.2 29.6 136 35.7 30.4 117
TRIPLE PEAK 8500 35.5 25.5 139 41.9 34.6 121
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Basin wide percent of average 146 122
LOWER GREEN RIVER
HAMS FORK 7840 13.4 5.7 235 17.8 15.0 119
HEWINTA 9500 9.5 6.2 153 16.1 15.9 101
HICKERSON PARK 9150 11.2 3.8 295 11.9 11.9 100
HOLE-IN-ROCK 9150 9.1 3.3 276 12.3 11.9 103
INDIAN CREEK 9425 43.7 29.3 149 35.0 28.9 121
KELLEY R.S. 8180 22.9 15.7 146 33.3 21.0 159
STEEL CREEK PARK 10100 18.8 18.6 101 18.4 15.7 117
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Basin wide percent of average 156 120
UPPER BEAR RIVER
BUG LAKE 7950 33.9 17.0 199 33.0 22.2 149
HAYDEN FORK 9400 15.3 7.7 199 27.6 22.5 123
KELLEY R.S. 8180 22.9 15.7 146 33.3 21.0 159
LILY LAKE 9050 16.0 9.8 163 21.8 17.6 124
MONTE CRISTO 8960 40.5 27.0 150 37.1 29.7 125
SALT RIVER SUMMIT 7600 20.7 11.6 178 25.6 18.9 135
TRIAL LAKE 9960 36.9 24.5 151 36.6 27.7 132
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Basin wide percent of average 164 135
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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.