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 FRIDAY: APRIL 11 , 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 30.6 16.5 185 35.5 23.6 150
COTTONWOOD CREEK 7600 31.7 23.6 134 33.6 26.5 127
GRANITE CREEK 6770 29.2 18.1 161 33.4 24.9 134
GRASSY LAKE 7265 47.9 37.4 128 53.1 39.4 135
GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.7 16.9 128
LEWIS LAKE DIVIDE 7860 51.9 36.5 142 45.8 40.0 115
PHILLIPS BENCH 8200 43.9 30.5 144 46.4 31.6 147
SALT RIVER SUMMIT 7600 22.3 14.0 159 24.5 17.9 137
SNAKE RIVER STATION 6920 28.3 18.7 151 37.1 27.6 134
SPRING CREEK DIVIDE 9000 37.4 29.1 129 33.5 29.0 116
THUMB DIVIDE 7980 32.3 17.3 187 33.8 22.1 153
TOGWOTEE PASS 9580 35.4 26.5 134 34.6 30.0 115
TWO OCEAN PLATEAU 9360 46.3 26.7 173 -M 32.5 *
WILLOW CREEK 8450 40.8 31.4 130 45.1 34.0 133
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Basin wide percent of average 147 132
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 36.1 25.0 144 31.1 19.2 162
BLACK BEAR 7950 -M 39.7 * -M 43.0 *
CANYON 7940 23.7 13.4 177 26.9 15.0 179
FISHER CREEK 9100 56.5 37.4 151 -M 38.8 *
MADISON PLATEAU 7750 42.7 25.4 168 42.7 27.8 154
NORTHEAST ENTRANCE 7350 13.0 9.1 143 19.6 12.6 156
PARKER PEAK 9400 32.8 22.8 144 -M 16.5 *
SYLVAN LAKE 8420 32.4 23.4 138 33.6 20.3 166
THUMB DIVIDE 7980 32.3 17.3 187 33.8 22.1 153
TWO OCEAN PLATEAU 9360 46.3 26.7 173 -M 32.5 *
WHISKEY CREEK 6800 25.6 18.0 142 32.2 23.1 139
WHITE MILL 8700 38.7 25.6 151 -M 30.0 *
WOLVERINE 7650 12.9 11.8 109 16.1 13.6 118
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Basin wide percent of average 154 154
WIND RIVER
BURROUGHS CREEK 8750 24.3 15.2 160 26.3 17.6 149
CHRISTINA LAKE 9980 20.7 16.3 127 24.0 17.9 134
COLD SPRINGS 9630 10.6 8.6 123 13.3 11.4 117
HOBBS PARK 10100 18.9 16.1 117 15.2 15.2 100
LITTLE WARM 9620 18.4 13.0 142 20.9 14.3 146
SOUTH PASS 9040 26.3 17.3 152 26.1 18.3 143
ST. LAWRENCE ALT 8620 9.7 7.2 135 12.3 11.0 112
TOGWOTEE PASS 9580 35.4 26.5 134 34.6 30.0 115
TOWNSEND CREEK 8700 11.2 10.3 109 13.6 13.5 101
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Basin wide percent of average 134 125
BIGHORN BASIN
BALD MTN. 9375 23.7 21.8 109 20.0 18.5 108
BEAR TRAP MEADOW 7900 6.7 7.0 96 9.4 9.0 104
BLACKWATER 9780 39.0 24.0 162 29.9 18.9 158
BONE SPRINGS DIV 9350 20.0 17.6 114 18.5 16.1 115
EVENING STAR 9200 42.4 28.6 148 41.1 23.8 173
GRAVE SPRINGS 8550 13.4 -M * 12.6 10.5 120
KIRWIN 9550 15.3 10.8 142 17.0 11.6 147
LOST CREEK 8080 18.2 14.8 123 17.3 12.9 134
MARQUETTE 8760 12.8 8.5 151 13.0 10.8 120
MIDDLE POWDER 7760 19.1 13.2 145 16.0 12.8 125
OWL CREEK 8975 8.5 4.7 181 7.0 6.8 103
POWDER RIVER PASS 9480 -M 11.4 * 14.4 12.6 114
SHELL CREEK 9580 19.0 15.9 119 16.2 14.0 116
SYLVAN LAKE 8420 32.4 23.4 138 33.6 20.3 166
SYLVAN ROAD 8120 21.1 11.3 187 27.7 17.0 163
TIMBER CREEK 7950 7.6 6.5 117 9.1 8.0 114
YOUNTS PEAK 8350 24.9 18.0 138 28.8 17.6 164
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Basin wide percent of average 137 137
SHOSHONE RIVER
BLACKWATER 9780 39.0 24.0 162 29.9 18.9 158
EVENING STAR 9200 42.4 28.6 148 41.1 23.8 173
KIRWIN 9550 15.3 10.8 142 17.0 11.6 147
MARQUETTE 8760 12.8 8.5 151 13.0 10.8 120
SYLVAN LAKE 8420 32.4 23.4 138 33.6 20.3 166
SYLVAN ROAD 8120 21.1 11.3 187 27.7 17.0 163
YOUNTS PEAK 8350 24.9 18.0 138 28.8 17.6 164
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Basin wide percent of average 151 159
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.7 7.0 96 9.4 9.0 104
BONE SPRINGS DIV 9350 20.0 17.6 114 18.5 16.1 115
BURGESS JUNCTION 7880 15.7 12.6 125 15.1 12.5 121
CLOUD PEAK RESERVOIR 9860 19.5 16.3 120 16.8 14.6 115
DOME LAKE 8880 15.1 14.5 104 16.4 14.3 115
GRAVE SPRINGS 8550 13.4 -M * 12.6 10.5 120
HANSEN SAWMILL 8760 7.2 7.5 96 9.3 8.7 107
LOST CREEK 8080 18.2 14.8 123 17.3 12.9 134
MIDDLE POWDER 7760 19.1 13.2 145 16.0 12.8 125
POWDER RIVER PASS 9480 -M 11.4 * 14.4 12.6 114
SUCKER CREEK 8880 17.3 13.0 133 17.4 14.2 123
TIE CREEK 6870 7.6 -M * 14.1 11.9 118
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Basin wide percent of average 119 118
BELLE FOURCHE
BLIND PARK 6890 11.3 11.5 98 16.8 11.3 149
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 20.9 11.5 182 -M 8.8 *
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Basin wide percent of average 140 149*
UPPER N. PLATTE RIVER
COLUMBINE 9400 30.8 24.5 126 33.5 25.7 130
DIVIDE PEAK 8800 29.3 21.7 135 26.6 24.3 109
ELK RIVER 8700 29.2 20.3 144 27.0 20.2 134
JOE WRIGHT 10120 28.4 23.6 120 31.0 26.8 116
NORTH FRENCH CREEK 10100 36.9 27.5 134 -M 25.0 *
OLD BATTLE 10000 43.7 34.8 126 40.7 32.0 127
SOUTH BRUSH CREEK 8400 13.8 13.1 105 18.9 17.7 107
TOWER 10500 57.9 48.0 121 48.2 38.5 125
WEBBER SPRINGS 9200 33.1 28.5 116 38.4 27.0 142
WILLOW CREEK PASS 9540 21.9 13.1 167 17.4 13.5 129
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Basin wide percent of average 127 125
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 37.5 28.3 133 28.3 20.9 135
CASPER MTN. 7900 25.3 18.3 138 22.6 15.6 145
CHRISTINA LAKE 9980 20.7 16.3 127 24.0 17.9 134
DEADMAN HILL 10220 18.2 17.5 104 20.2 18.2 111
LAPRELE CREEK 8320 15.3 10.2 150 15.9 12.8 124
RENO HILL 8400 26.2 15.2 172 22.7 20.3 112
ROACH 9700 24.4 17.9 136 24.0 22.7 106
SAND LAKE 10080 40.7 35.0 116 31.5 21.8 144
SOUTH PASS 9040 26.3 17.3 152 26.1 18.3 143
WINDY PEAK 7840 11.1 9.2 121 12.2 10.4 117
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Basin wide percent of average 133 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.9 11.0 145 28.2 16.4 172
DIVIDE PEAK 8800 29.3 21.7 135 26.6 24.3 109
OLD BATTLE 10000 43.7 34.8 126 40.7 32.0 127
SANDSTONE RS 8150 19.4 15.2 128 23.0 20.1 114
WHISKEY PARK 8950 40.7 30.2 135 33.8 30.1 112
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Basin wide percent of average 132 124
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.3 15.2 127 17.4 17.2 101
BLIND BULL SUM 8650 44.0 30.7 143 33.8 25.4 133
EAST RIM DIVIDE 7930 17.3 14.7 118 17.6 16.1 109
ELKHART PARK G.S. 9400 18.3 14.7 124 19.0 16.9 112
GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.7 16.9 128
KENDALL R.S. 7740 23.7 13.6 174 23.9 16.5 145
LOOMIS PARK 8240 -M 17.1 * 27.8 20.0 139
NEW FORK LAKE 8340 15.4 10.9 141 13.5 15.3 88
SNIDER BASIN 8250 23.8 15.3 156 19.8 16.1 123
SPRING CREEK DIVIDE 9000 37.4 29.1 129 33.5 29.0 116
TRIPLE PEAK 8500 36.6 26.6 138 38.4 32.8 117
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Basin wide percent of average 139 120
LOWER GREEN RIVER
HAMS FORK 7840 15.7 7.6 207 15.2 14.2 107
HEWINTA 9500 12.3 9.7 127 15.3 14.2 108
HICKERSON PARK 9150 12.2 6.7 182 11.4 10.4 110
HOLE-IN-ROCK 9150 10.3 6.3 163 11.7 10.4 112
INDIAN CREEK 9425 40.1 30.0 134 32.4 27.5 118
KELLEY R.S. 8180 24.9 17.5 142 26.1 19.9 131
STEEL CREEK PARK 10100 17.4 17.5 99 17.0 13.9 122
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Basin wide percent of average 139 117
UPPER BEAR RIVER
BUG LAKE 7950 34.3 20.4 168 30.2 20.6 147
HAYDEN FORK 9400 19.2 12.4 155 26.1 20.4 128
KELLEY R.S. 8180 24.9 17.5 142 26.1 19.9 131
LILY LAKE 9050 19.0 13.0 146 20.5 15.9 129
MONTE CRISTO 8960 42.2 29.5 143 34.1 27.2 125
SALT RIVER SUMMIT 7600 22.3 14.0 159 24.5 17.9 137
TRIAL LAKE 9960 35.8 25.7 139 35.4 25.4 139
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Basin wide percent of average 149 134
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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.