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 TUESDAY: MARCH 25 , 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 29.5 17.3 171 33.9 22.2 153
COTTONWOOD CREEK 7600 30.3 23.3 130 31.8 24.9 128
GRANITE CREEK 6770 28.2 18.1 156 32.5 23.3 139
GRASSY LAKE 7265 44.7 34.9 128 51.2 36.8 139
GROS VENTRE SUMMIT 8775 21.9 15.2 144 21.0 15.8 133
LEWIS LAKE DIVIDE 7860 51.3 34.5 149 46.1 37.4 123
PHILLIPS BENCH 8200 41.3 28.4 145 44.9 29.6 152
SALT RIVER SUMMIT 7600 21.4 14.0 153 23.3 16.8 139
SNAKE RIVER STATION 6920 27.8 18.3 152 35.7 25.8 138
SPRING CREEK DIVIDE 9000 34.1 27.3 125 32.2 27.2 118
THUMB DIVIDE 7980 30.8 16.6 186 -M 20.7 *
TOGWOTEE PASS 9580 34.0 24.3 140 -M 28.0 *
TWO OCEAN PLATEAU 9360 43.7 25.9 169 -M 30.6 *
WILLOW CREEK 8450 40.6 29.6 137 40.0 31.9 125
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Basin wide percent of average 146 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 34.7 23.0 151 29.8 17.5 170
BLACK BEAR 7950 -M 37.1 * -M 39.6 *
CANYON 7940 23.6 12.6 187 26.0 13.9 187
FISHER CREEK 9100 55.2 34.9 158 -M 35.7 *
MADISON PLATEAU 7750 41.0 23.9 172 41.7 25.6 163
NORTHEAST ENTRANCE 7350 12.1 9.0 134 19.1 11.5 166
PARKER PEAK 9400 30.8 21.1 146 -M 15.1 *
SYLVAN LAKE 8420 31.5 21.5 147 31.9 18.6 172
THUMB DIVIDE 7980 30.8 16.6 186 -M 20.7 *
TWO OCEAN PLATEAU 9360 43.7 25.9 169 -M 30.6 *
WHISKEY CREEK 6800 24.9 16.9 147 31.2 21.3 146
WHITE MILL 8700 37.9 24.4 155 -M 27.6 *
WOLVERINE 7650 14.1 11.4 124 15.1 12.4 122
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Basin wide percent of average 158 161
WIND RIVER
BURROUGHS CREEK 8750 23.6 14.7 161 25.4 16.1 158
CHRISTINA LAKE 9980 19.1 14.8 129 22.1 16.0 138
COLD SPRINGS 9630 10.1 8.1 125 11.7 10.1 116
HOBBS PARK 10100 16.7 14.4 116 13.1 13.5 97
LITTLE WARM 9620 17.3 11.1 156 19.3 12.7 152
SOUTH PASS 9040 25.3 15.9 159 24.3 16.4 148
ST. LAWRENCE ALT 8620 8.4 7.4 114 10.5 9.7 108
TOGWOTEE PASS 9580 34.0 24.3 140 -M 28.0 *
TOWNSEND CREEK 8700 9.9 9.5 104 11.4 11.9 96
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Basin wide percent of average 137 130
BIGHORN BASIN
BALD MTN. 9375 21.3 19.8 108 17.8 16.7 107
BEAR TRAP MEADOW 7900 7.3 6.9 106 8.1 7.8 104
BLACKWATER 9780 36.9 21.5 172 28.0 17.4 161
BONE SPRINGS DIV 9350 17.9 15.8 113 15.7 14.3 110
EVENING STAR 9200 40.3 26.2 154 39.0 21.9 178
GRAVE SPRINGS 8550 11.4 -M * 10.6 9.1 116
KIRWIN 9550 14.2 9.6 148 15.5 10.3 150
LOST CREEK 8080 14.5 13.0 112 14.9 11.2 133
MARQUETTE 8760 10.9 7.8 140 11.3 9.0 126
MIDDLE POWDER 7760 16.0 11.7 137 13.9 11.2 124
OWL CREEK 8975 7.8 4.4 177 6.4 5.9 108
POWDER RIVER PASS 9480 12.2 10.5 116 13.1 11.0 119
SHELL CREEK 9580 16.9 14.5 117 14.2 12.5 114
SYLVAN LAKE 8420 31.5 21.5 147 31.9 18.6 172
SYLVAN ROAD 8120 20.0 12.4 161 26.2 15.6 168
TIMBER CREEK 7950 7.0 6.0 117 7.9 6.6 120
YOUNTS PEAK 8350 23.5 16.8 140 -M 16.1 *
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Basin wide percent of average 137 138
SHOSHONE RIVER
BLACKWATER 9780 36.9 21.5 172 28.0 17.4 161
EVENING STAR 9200 40.3 26.2 154 39.0 21.9 178
KIRWIN 9550 14.2 9.6 148 15.5 10.3 150
MARQUETTE 8760 10.9 7.8 140 11.3 9.0 126
SYLVAN LAKE 8420 31.5 21.5 147 31.9 18.6 172
SYLVAN ROAD 8120 20.0 12.4 161 26.2 15.6 168
YOUNTS PEAK 8350 23.5 16.8 140 -M 16.1 *
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Basin wide percent of average 153 164
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 6.9 106 8.1 7.8 104
BONE SPRINGS DIV 9350 17.9 15.8 113 15.7 14.3 110
BURGESS JUNCTION 7880 12.8 11.3 113 12.4 10.8 115
CLOUD PEAK RESERVOIR 9860 17.1 14.1 121 14.5 12.6 115
DOME LAKE 8880 12.4 13.3 93 13.7 12.6 109
GRAVE SPRINGS 8550 11.4 -M * 10.6 9.1 116
HANSEN SAWMILL 8760 7.3 6.9 106 8.1 7.5 108
LOST CREEK 8080 14.5 13.0 112 14.9 11.2 133
MIDDLE POWDER 7760 16.0 11.7 137 13.9 11.2 124
POWDER RIVER PASS 9480 12.2 10.5 116 13.1 11.0 119
SUCKER CREEK 8880 13.8 11.7 118 13.9 12.5 111
TIE CREEK 6870 -M -M * -M 10.4 *
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Basin wide percent of average 114 115
BELLE FOURCHE
BLIND PARK 6890 9.7 10.7 91 13.9 9.5 146
NORTH RAPID CREEK 6130 9.0 -M * 12.4 -M *
WARREN PEAK 6520 16.6 10.7 155 -M 7.6 *
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Basin wide percent of average 123 146*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.3 24.3 116 29.6 23.6 125
DIVIDE PEAK 8800 25.1 20.2 124 23.6 21.9 108
ELK RIVER 8700 25.9 19.3 134 24.0 18.4 130
JOE WRIGHT 10120 23.1 21.1 109 27.5 23.9 115
NORTH FRENCH CREEK 10100 34.1 24.5 139 27.6 22.5 123
OLD BATTLE 10000 38.4 30.8 125 36.5 28.9 126
SOUTH BRUSH CREEK 8400 13.4 12.5 107 16.8 15.5 108
TOWER 10500 52.7 43.7 121 46.3 34.8 133
WEBBER SPRINGS 9200 29.9 26.9 111 34.6 24.2 143
WILLOW CREEK PASS 9540 16.7 11.4 146 13.7 12.0 114
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Basin wide percent of average 123 124
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 34.6 24.8 140 26.0 18.5 141
CASPER MTN. 7900 20.4 15.5 132 18.9 13.3 142
CHRISTINA LAKE 9980 19.1 14.8 129 22.1 16.0 138
DEADMAN HILL 10220 15.3 15.9 96 17.4 15.9 109
LAPRELE CREEK 8320 14.4 10.1 143 13.7 11.2 122
RENO HILL 8400 21.6 13.5 160 18.5 18.2 102
ROACH 9700 22.9 16.7 137 21.0 20.2 104
SAND LAKE 10080 35.4 31.7 112 28.0 19.4 144
SOUTH PASS 9040 25.3 15.9 159 24.3 16.4 148
WINDY PEAK 7840 10.1 8.3 122 10.7 9.0 119
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Basin wide percent of average 131 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.8 11.1 133 25.7 14.7 175
DIVIDE PEAK 8800 25.1 20.2 124 23.6 21.9 108
OLD BATTLE 10000 38.4 30.8 125 36.5 28.9 126
SANDSTONE RS 8150 17.5 14.4 122 21.5 17.9 120
WHISKEY PARK 8950 35.8 27.9 128 32.2 26.9 120
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Basin wide percent of average 126 126
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.7 14.2 132 21.3 16.1 132
BLIND BULL SUM 8650 41.2 28.7 144 32.5 23.8 137
EAST RIM DIVIDE 7930 16.8 13.7 123 17.0 15.1 113
ELKHART PARK G.S. 9400 18.2 13.4 136 18.2 15.8 115
GROS VENTRE SUMMIT 8775 21.9 15.2 144 21.0 15.8 133
KENDALL R.S. 7740 24.1 14.6 165 23.5 15.4 153
LOOMIS PARK 8240 -M 17.1 * 26.9 18.7 144
NEW FORK LAKE 8340 14.7 11.1 132 13.1 14.4 91
SNIDER BASIN 8250 23.0 14.5 159 19.0 15.1 126
SPRING CREEK DIVIDE 9000 34.1 27.3 125 32.2 27.2 118
TRIPLE PEAK 8500 36.5 25.0 146 36.7 30.8 119
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Basin wide percent of average 140 126
LOWER GREEN RIVER
HAMS FORK 7840 16.0 12.1 132 14.6 13.3 110
HEWINTA 9500 10.6 10.9 97 14.0 12.4 113
HICKERSON PARK 9150 8.1 6.4 127 9.2 9.0 102
HOLE-IN-ROCK 9150 7.5 6.1 123 9.7 9.0 108
INDIAN CREEK 9425 38.7 27.8 139 31.1 25.7 121
KELLEY R.S. 8180 23.6 16.7 141 25.7 18.7 137
STEEL CREEK PARK 10100 15.6 15.7 99 15.4 12.2 126
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Basin wide percent of average 125 119
UPPER BEAR RIVER
BUG LAKE 7950 33.3 20.3 164 29.2 18.8 155
HAYDEN FORK 9400 17.9 16.0 112 25.0 18.2 137
KELLEY R.S. 8180 23.6 16.7 141 25.7 18.7 137
LILY LAKE 9050 16.7 12.7 131 19.2 14.1 136
MONTE CRISTO 8960 37.0 28.5 130 32.6 24.6 133
SALT RIVER SUMMIT 7600 21.4 14.0 153 23.3 16.8 139
TRIAL LAKE 9960 34.7 24.5 142 34.4 23.0 150
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Basin wide percent of average 139 141
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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.