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 WEDNESDAY: APRIL 9 , 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 30.4 16.8 181 35.4 23.4 151
COTTONWOOD CREEK 7600 31.5 23.8 132 33.3 26.4 126
GRANITE CREEK 6770 29.4 18.2 162 33.3 24.7 135
GRASSY LAKE 7265 48.2 37.2 130 53.1 39.1 136
GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.8 16.8 130
LEWIS LAKE DIVIDE 7860 52.6 36.3 145 45.8 39.7 115
PHILLIPS BENCH 8200 43.8 30.3 145 46.3 31.4 147
SALT RIVER SUMMIT 7600 22.0 14.1 156 24.0 17.8 135
SNAKE RIVER STATION 6920 28.5 18.7 152 37.1 27.4 135
SPRING CREEK DIVIDE 9000 36.9 28.9 128 33.3 28.8 116
THUMB DIVIDE 7980 32.4 17.3 187 33.8 21.9 154
TOGWOTEE PASS 9580 35.3 26.2 135 34.5 29.8 116
TWO OCEAN PLATEAU 9360 46.5 26.7 174 -M 32.3 *
WILLOW CREEK 8450 40.3 31.2 129 44.5 33.8 132
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Basin wide percent of average 147 132
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 36.5 24.8 147 31.2 19.0 164
BLACK BEAR 7950 -M 39.5 * -M 42.7 *
CANYON 7940 23.3 13.3 175 26.8 14.9 180
FISHER CREEK 9100 56.5 37.1 152 -M 38.5 *
MADISON PLATEAU 7750 42.6 25.3 168 42.5 27.6 154
NORTHEAST ENTRANCE 7350 12.7 9.1 140 19.6 12.4 158
PARKER PEAK 9400 32.8 22.6 145 -M 16.4 *
SYLVAN LAKE 8420 32.7 23.2 141 33.6 20.1 167
THUMB DIVIDE 7980 32.4 17.3 187 33.8 21.9 154
TWO OCEAN PLATEAU 9360 46.5 26.7 174 -M 32.3 *
WHISKEY CREEK 6800 25.6 17.9 143 32.0 22.9 140
WHITE MILL 8700 38.8 25.5 152 -M 29.7 *
WOLVERINE 7650 13.7 11.8 116 16.1 13.4 120
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Basin wide percent of average 155 155
WIND RIVER
BURROUGHS CREEK 8750 24.3 15.2 160 26.3 17.4 151
CHRISTINA LAKE 9980 20.9 16.1 130 24.0 17.7 136
COLD SPRINGS 9630 10.8 8.6 126 13.1 11.3 116
HOBBS PARK 10100 18.9 15.9 119 15.1 15.0 101
LITTLE WARM 9620 18.7 12.7 147 21.1 14.1 150
SOUTH PASS 9040 26.0 17.1 152 25.9 18.0 144
ST. LAWRENCE ALT 8620 9.6 7.3 132 12.1 10.8 112
TOGWOTEE PASS 9580 35.3 26.2 135 34.5 29.8 116
TOWNSEND CREEK 8700 11.1 10.2 109 13.4 13.3 101
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Basin wide percent of average 136 126
BIGHORN BASIN
BALD MTN. 9375 23.7 21.5 110 20.0 18.3 109
BEAR TRAP MEADOW 7900 7.3 7.0 104 9.5 8.8 108
BLACKWATER 9780 39.4 23.7 166 29.8 18.8 159
BONE SPRINGS DIV 9350 20.4 17.4 117 18.4 15.9 116
EVENING STAR 9200 42.7 28.3 151 41.0 23.6 174
GRAVE SPRINGS 8550 13.4 -M * 12.4 10.3 120
KIRWIN 9550 15.6 10.6 147 17.0 11.5 148
LOST CREEK 8080 17.9 14.6 123 17.2 12.7 135
MARQUETTE 8760 12.9 8.4 154 12.9 10.6 122
MIDDLE POWDER 7760 19.1 13.0 147 16.0 12.6 127
OWL CREEK 8975 9.1 4.7 194 7.0 6.7 104
POWDER RIVER PASS 9480 -M 11.3 * 14.3 12.4 115
SHELL CREEK 9580 19.1 15.7 122 16.0 13.8 116
SYLVAN LAKE 8420 32.7 23.2 141 33.6 20.1 167
SYLVAN ROAD 8120 21.2 11.5 184 27.5 16.8 164
TIMBER CREEK 7950 7.5 6.5 115 8.9 7.8 114
YOUNTS PEAK 8350 24.9 17.9 139 28.4 17.4 163
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Basin wide percent of average 140 139
SHOSHONE RIVER
BLACKWATER 9780 39.4 23.7 166 29.8 18.8 159
EVENING STAR 9200 42.7 28.3 151 41.0 23.6 174
KIRWIN 9550 15.6 10.6 147 17.0 11.5 148
MARQUETTE 8760 12.9 8.4 154 12.9 10.6 122
SYLVAN LAKE 8420 32.7 23.2 141 33.6 20.1 167
SYLVAN ROAD 8120 21.2 11.5 184 27.5 16.8 164
YOUNTS PEAK 8350 24.9 17.9 139 28.4 17.4 163
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Basin wide percent of average 153 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 7.0 104 9.5 8.8 108
BONE SPRINGS DIV 9350 20.4 17.4 117 18.4 15.9 116
BURGESS JUNCTION 7880 16.0 12.4 129 15.3 12.3 124
CLOUD PEAK RESERVOIR 9860 19.5 16.0 122 16.7 14.3 117
DOME LAKE 8880 15.1 14.4 105 16.2 14.1 115
GRAVE SPRINGS 8550 13.4 -M * 12.4 10.3 120
HANSEN SAWMILL 8760 7.7 7.4 104 9.1 8.5 107
LOST CREEK 8080 17.9 14.6 123 17.2 12.7 135
MIDDLE POWDER 7760 19.1 13.0 147 16.0 12.6 127
POWDER RIVER PASS 9480 -M 11.3 * 14.3 12.4 115
SUCKER CREEK 8880 17.2 12.8 134 17.7 14.0 126
TIE CREEK 6870 8.0 -M * 14.1 11.7 121
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Basin wide percent of average 122 120
BELLE FOURCHE
BLIND PARK 6890 11.0 11.4 96 16.6 11.0 151
NORTH RAPID CREEK 6130 11.5 -M * 14.7 -M *
WARREN PEAK 6520 20.8 11.4 182 -M 8.6 *
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Basin wide percent of average 139 151*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.4 24.6 120 32.4 25.5 127
DIVIDE PEAK 8800 28.2 21.6 131 26.1 24.0 109
ELK RIVER 8700 27.8 20.2 138 25.9 20.0 130
JOE WRIGHT 10120 26.9 23.3 115 30.6 26.4 116
NORTH FRENCH CREEK 10100 36.8 27.1 136 27.6 24.7 112
OLD BATTLE 10000 42.5 34.3 124 39.2 31.7 124
SOUTH BRUSH CREEK 8400 13.6 13.2 103 18.6 17.4 107
TOWER 10500 56.2 47.5 118 48.1 38.1 126
WEBBER SPRINGS 9200 32.3 28.5 113 37.4 26.6 141
WILLOW CREEK PASS 9540 20.7 12.9 160 16.9 13.3 127
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Basin wide percent of average 124 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 36.8 27.9 132 28.2 20.6 137
CASPER MTN. 7900 25.1 18.0 139 22.6 15.3 148
CHRISTINA LAKE 9980 20.9 16.1 130 24.0 17.7 136
DEADMAN HILL 10220 17.3 17.3 100 19.3 17.9 108
LAPRELE CREEK 8320 16.0 10.3 155 15.9 12.6 126
RENO HILL 8400 25.9 15.0 173 22.7 20.1 113
ROACH 9700 23.1 17.8 130 22.9 22.4 102
SAND LAKE 10080 40.2 34.6 116 31.2 21.5 145
SOUTH PASS 9040 26.0 17.1 152 25.9 18.0 144
WINDY PEAK 7840 11.1 9.1 122 12.4 10.2 122
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Basin wide percent of average 132 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.0 11.1 135 28.7 16.2 177
DIVIDE PEAK 8800 28.2 21.6 131 26.1 24.0 109
OLD BATTLE 10000 42.5 34.3 124 39.2 31.7 124
SANDSTONE RS 8150 18.5 15.2 122 22.6 19.8 114
WHISKEY PARK 8950 39.3 30.0 131 33.9 29.7 114
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Basin wide percent of average 128 124
UPPER GREEN RIVER
BIG SANDY OPENING 9100 20.0 15.1 132 18.5 17.1 108
BLIND BULL SUM 8650 43.7 30.5 143 33.2 25.2 132
EAST RIM DIVIDE 7930 17.3 14.6 118 17.6 16.0 110
ELKHART PARK G.S. 9400 18.5 14.5 128 19.1 16.8 114
GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.8 16.8 130
KENDALL R.S. 7740 23.9 13.8 173 24.1 16.4 147
LOOMIS PARK 8240 -M 17.2 * 27.8 19.9 140
NEW FORK LAKE 8340 15.7 11.0 143 13.6 15.2 89
SNIDER BASIN 8250 23.9 15.2 157 19.8 16.0 124
SPRING CREEK DIVIDE 9000 36.9 28.9 128 33.3 28.8 116
TRIPLE PEAK 8500 36.8 26.5 139 38.3 32.6 117
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Basin wide percent of average 140 121
LOWER GREEN RIVER
HAMS FORK 7840 15.4 8.5 181 15.1 14.1 107
HEWINTA 9500 11.0 10.1 109 14.7 14.0 105
HICKERSON PARK 9150 10.4 6.7 155 10.8 10.2 106
HOLE-IN-ROCK 9150 8.5 6.3 135 11.2 10.2 110
INDIAN CREEK 9425 40.4 29.8 136 32.3 27.3 118
KELLEY R.S. 8180 24.5 17.5 140 26.4 19.8 133
STEEL CREEK PARK 10100 17.0 17.3 98 16.6 13.7 121
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Basin wide percent of average 132 116
UPPER BEAR RIVER
BUG LAKE 7950 33.6 20.6 163 29.7 20.4 146
HAYDEN FORK 9400 18.1 13.2 137 26.0 20.1 129
KELLEY R.S. 8180 24.5 17.5 140 26.4 19.8 133
LILY LAKE 9050 18.1 13.1 138 20.1 15.7 128
MONTE CRISTO 8960 41.4 29.6 140 33.7 26.9 125
SALT RIVER SUMMIT 7600 22.0 14.1 156 24.0 17.8 135
TRIAL LAKE 9960 35.2 25.6 138 34.9 25.1 139
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Basin wide percent of average 144 134
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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.