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 MONDAY: MARCH 17 , 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 16.8 176 33.0 21.5 153
COTTONWOOD CREEK 7600 29.6 21.9 135 30.5 24.1 127
GRANITE CREEK 6770 29.2 17.3 169 23.3 22.6 103
GRASSY LAKE 7265 44.5 33.4 133 39.2 35.4 111
GROS VENTRE SUMMIT 8775 21.4 14.6 147 20.0 15.3 131
LEWIS LAKE DIVIDE 7860 51.4 33.1 155 -M 35.9 *
PHILLIPS BENCH 8200 40.3 27.3 148 43.6 28.4 154
SALT RIVER SUMMIT 7600 21.3 13.4 159 23.1 16.2 143
SNAKE RIVER STATION 6920 27.9 17.8 157 35.0 24.8 141
SPRING CREEK DIVIDE 9000 33.4 26.1 128 -M 26.2 *
THUMB DIVIDE 7980 31.4 16.0 196 -M 20.1 *
TOGWOTEE PASS 9580 33.3 23.2 144 -M 26.9 *
TWO OCEAN PLATEAU 9360 42.5 24.9 171 -M 29.6 *
WILLOW CREEK 8450 40.1 28.6 140 38.6 30.8 125
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Basin wide percent of average 151 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 33.8 22.0 154 -M 16.7 *
BLACK BEAR 7950 -M 35.6 * -M 37.6 *
CANYON 7940 23.2 12.0 193 25.1 13.3 189
FISHER CREEK 9100 53.8 33.5 161 -M 34.0 *
MADISON PLATEAU 7750 40.5 22.9 177 40.6 24.3 167
NORTHEAST ENTRANCE 7350 12.3 8.8 140 18.6 11.1 168
PARKER PEAK 9400 30.4 20.2 150 -M 14.4 *
SYLVAN LAKE 8420 30.3 20.6 147 -M 17.8 *
THUMB DIVIDE 7980 31.4 16.0 196 -M 20.1 *
TWO OCEAN PLATEAU 9360 42.5 24.9 171 -M 29.6 *
WHISKEY CREEK 6800 24.8 16.2 153 30.5 20.2 151
WHITE MILL 8700 36.8 23.7 155 -M 26.3 *
WOLVERINE 7650 15.4 11.1 139 15.2 11.9 128
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Basin wide percent of average 162 161*
WIND RIVER
BURROUGHS CREEK 8750 23.3 14.3 163 -M 15.4 *
CHRISTINA LAKE 9980 18.5 14.2 130 21.3 15.1 141
COLD SPRINGS 9630 10.3 7.8 132 11.2 9.5 118
HOBBS PARK 10100 16.5 13.7 120 12.8 12.7 101
LITTLE WARM 9620 16.2 10.5 154 18.0 12.1 149
SOUTH PASS 9040 25.2 15.3 165 23.6 15.5 152
ST. LAWRENCE ALT 8620 8.6 7.1 121 10.0 9.1 110
TOGWOTEE PASS 9580 33.3 23.2 144 -M 26.9 *
TOWNSEND CREEK 8700 9.8 9.1 108 11.1 11.2 99
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Basin wide percent of average 140 127
BIGHORN BASIN
BALD MTN. 9375 20.8 19.0 109 17.2 15.8 109
BEAR TRAP MEADOW 7900 7.6 6.6 115 8.1 7.3 111
BLACKWATER 9780 36.4 20.5 178 27.6 16.7 165
BONE SPRINGS DIV 9350 17.5 15.1 116 15.3 13.5 113
EVENING STAR 9200 40.0 25.1 159 -M 20.9 *
GRAVE SPRINGS 8550 10.6 -M * 10.0 8.5 118
KIRWIN 9550 13.9 9.1 153 15.1 9.7 156
LOST CREEK 8080 14.1 12.2 116 14.1 10.6 133
MARQUETTE 8760 10.3 7.4 139 10.8 8.3 130
MIDDLE POWDER 7760 14.6 11.1 132 13.1 10.5 125
OWL CREEK 8975 7.8 4.2 186 6.4 5.6 114
POWDER RIVER PASS 9480 12.7 10.0 127 12.6 10.5 120
SHELL CREEK 9580 16.7 13.9 120 13.9 11.9 117
SYLVAN LAKE 8420 30.3 20.6 147 -M 17.8 *
SYLVAN ROAD 8120 20.2 12.3 164 25.7 14.9 172
TIMBER CREEK 7950 7.0 5.7 123 7.5 6.1 123
YOUNTS PEAK 8350 22.9 16.2 141 -M 15.3 *
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Basin wide percent of average 140 132
SHOSHONE RIVER
BLACKWATER 9780 36.4 20.5 178 27.6 16.7 165
EVENING STAR 9200 40.0 25.1 159 -M 20.9 *
KIRWIN 9550 13.9 9.1 153 15.1 9.7 156
MARQUETTE 8760 10.3 7.4 139 10.8 8.3 130
SYLVAN LAKE 8420 30.3 20.6 147 -M 17.8 *
SYLVAN ROAD 8120 20.2 12.3 164 25.7 14.9 172
YOUNTS PEAK 8350 22.9 16.2 141 -M 15.3 *
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Basin wide percent of average 156 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.6 6.6 115 8.1 7.3 111
BONE SPRINGS DIV 9350 17.5 15.1 116 15.3 13.5 113
BURGESS JUNCTION 7880 11.8 10.8 109 12.1 10.1 120
CLOUD PEAK RESERVOIR 9860 16.6 13.2 126 13.7 11.8 116
DOME LAKE 8880 12.0 12.7 94 13.1 11.8 111
GRAVE SPRINGS 8550 10.6 -M * 10.0 8.5 118
HANSEN SAWMILL 8760 7.0 6.6 106 7.8 7.0 111
LOST CREEK 8080 14.1 12.2 116 14.1 10.6 133
MIDDLE POWDER 7760 14.6 11.1 132 13.1 10.5 125
POWDER RIVER PASS 9480 12.7 10.0 127 12.6 10.5 120
SUCKER CREEK 8880 13.2 11.1 119 13.7 11.8 116
TIE CREEK 6870 7.9 -M * 10.7 9.6 111
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Basin wide percent of average 116 117
BELLE FOURCHE
BLIND PARK 6890 9.6 10.2 94 13.9 8.8 158
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 16.7 10.2 164 -M 7.1 *
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Basin wide percent of average 129 158*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.6 23.6 125 29.3 22.6 130
DIVIDE PEAK 8800 24.3 19.0 128 23.6 20.8 113
ELK RIVER 8700 27.1 18.6 146 24.1 17.4 139
JOE WRIGHT 10120 19.9 19.9 100 27.4 22.7 121
NORTH FRENCH CREEK 10100 33.7 23.2 145 30.0 21.3 141
OLD BATTLE 10000 33.9 29.1 116 33.5 27.4 122
SOUTH BRUSH CREEK 8400 14.1 11.5 123 16.6 14.7 113
TOWER 10500 52.1 41.7 125 36.7 33.2 111
WEBBER SPRINGS 9200 29.9 25.3 118 34.2 23.0 149
WILLOW CREEK PASS 9540 16.8 10.7 157 14.1 11.3 125
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Basin wide percent of average 126 126
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 32.6 23.0 142 24.7 17.5 141
CASPER MTN. 7900 19.2 14.2 135 17.9 12.5 143
CHRISTINA LAKE 9980 18.5 14.2 130 21.3 15.1 141
DEADMAN HILL 10220 15.1 15.2 99 17.1 14.9 115
LAPRELE CREEK 8320 14.1 9.5 148 13.6 10.5 130
RENO HILL 8400 20.1 12.5 161 17.3 17.0 102
ROACH 9700 21.3 15.8 135 20.8 19.3 108
SAND LAKE 10080 34.6 30.2 115 27.3 18.5 148
SOUTH PASS 9040 25.2 15.3 165 23.6 15.5 152
WINDY PEAK 7840 9.6 7.7 125 11.4 8.3 137
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Basin wide percent of average 133 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.7 10.9 153 18.4 14.0 131
DIVIDE PEAK 8800 24.3 19.0 128 23.6 20.8 113
OLD BATTLE 10000 33.9 29.1 116 33.5 27.4 122
SANDSTONE RS 8150 19.7 13.8 143 21.5 17.1 126
WHISKEY PARK 8950 36.8 26.6 138 31.4 25.4 124
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Basin wide percent of average 132 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.6 13.6 137 14.9 15.6 96
BLIND BULL SUM 8650 40.6 27.4 148 32.0 22.9 140
EAST RIM DIVIDE 7930 16.7 13.3 126 16.9 14.6 116
ELKHART PARK G.S. 9400 17.9 12.9 139 17.9 15.3 117
GROS VENTRE SUMMIT 8775 21.4 14.6 147 20.0 15.3 131
KENDALL R.S. 7740 24.3 14.4 169 18.8 14.9 126
LOOMIS PARK 8240 -M 16.6 * 20.8 18.1 115
NEW FORK LAKE 8340 14.4 10.8 133 13.1 13.9 94
SNIDER BASIN 8250 22.9 14.1 162 18.9 14.6 129
SPRING CREEK DIVIDE 9000 33.4 26.1 128 -M 26.2 *
TRIPLE PEAK 8500 34.6 24.0 144 35.3 29.9 118
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Basin wide percent of average 143 119
LOWER GREEN RIVER
HAMS FORK 7840 17.0 11.9 143 14.5 12.8 113
HEWINTA 9500 12.9 10.2 126 13.6 11.7 116
HICKERSON PARK 9150 7.6 5.9 129 8.8 8.4 105
HOLE-IN-ROCK 9150 7.3 5.6 130 9.3 8.4 111
INDIAN CREEK 9425 38.1 26.4 144 30.7 24.6 125
KELLEY R.S. 8180 23.1 16.1 143 24.9 18.0 138
STEEL CREEK PARK 10100 15.3 14.6 105 15.0 11.6 129
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Basin wide percent of average 134 122
UPPER BEAR RIVER
BUG LAKE 7950 32.0 19.2 167 28.7 17.8 161
HAYDEN FORK 9400 19.3 15.5 125 24.6 17.2 143
KELLEY R.S. 8180 23.1 16.1 143 24.9 18.0 138
LILY LAKE 9050 17.6 12.0 147 18.6 13.3 140
MONTE CRISTO 8960 39.9 26.8 149 32.0 23.3 137
SALT RIVER SUMMIT 7600 21.3 13.4 159 23.1 16.2 143
TRIAL LAKE 9960 35.8 23.9 150 34.0 21.9 155
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Basin wide percent of average 149 146
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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.