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: MARCH 21 , 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 29.6 17.1 173 33.7 21.8 155
COTTONWOOD CREEK 7600 30.7 22.6 136 31.5 24.5 129
GRANITE CREEK 6770 28.1 17.7 159 32.4 23.0 141
GRASSY LAKE 7265 45.2 34.2 132 51.8 36.1 143
GROS VENTRE SUMMIT 8775 18.5 14.9 124 20.3 15.6 130
LEWIS LAKE DIVIDE 7860 51.9 33.8 154 -M 36.7 *
PHILLIPS BENCH 8200 40.7 27.8 146 44.1 29.0 152
SALT RIVER SUMMIT 7600 21.5 13.7 157 23.4 16.5 142
SNAKE RIVER STATION 6920 27.0 18.1 149 35.4 25.3 140
SPRING CREEK DIVIDE 9000 33.9 26.7 127 32.2 26.7 121
THUMB DIVIDE 7980 32.9 16.3 202 -M 20.4 *
TOGWOTEE PASS 9580 33.5 23.7 141 -M 27.5 *
TWO OCEAN PLATEAU 9360 43.5 25.4 171 -M 30.1 *
WILLOW CREEK 8450 40.7 29.1 140 39.2 31.4 125
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Basin wide percent of average 149 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 34.5 22.5 153 29.6 17.1 173
BLACK BEAR 7950 -M 36.4 * -M 38.6 *
CANYON 7940 23.9 12.3 194 25.8 13.6 190
FISHER CREEK 9100 54.8 34.2 160 -M 34.8 *
MADISON PLATEAU 7750 40.9 23.4 175 41.4 25.0 166
NORTHEAST ENTRANCE 7350 12.3 8.9 138 18.9 11.3 167
PARKER PEAK 9400 30.7 20.6 149 -M 14.8 *
SYLVAN LAKE 8420 31.2 21.1 148 31.8 18.2 175
THUMB DIVIDE 7980 32.9 16.3 202 -M 20.4 *
TWO OCEAN PLATEAU 9360 43.5 25.4 171 -M 30.1 *
WHISKEY CREEK 6800 24.8 16.5 150 31.0 20.7 150
WHITE MILL 8700 37.8 24.1 157 -M 27.0 *
WOLVERINE 7650 14.2 11.2 127 15.2 12.2 125
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Basin wide percent of average 161 164
WIND RIVER
BURROUGHS CREEK 8750 23.5 14.5 162 25.2 15.7 161
CHRISTINA LAKE 9980 18.8 14.5 130 21.5 15.6 138
COLD SPRINGS 9630 10.0 7.9 127 11.2 9.8 114
HOBBS PARK 10100 16.4 14.1 116 12.8 13.1 98
LITTLE WARM 9620 16.2 10.8 150 18.1 12.4 146
SOUTH PASS 9040 25.4 15.6 163 24.0 15.9 151
ST. LAWRENCE ALT 8620 8.3 7.2 115 10.1 9.4 107
TOGWOTEE PASS 9580 33.5 23.7 141 -M 27.5 *
TOWNSEND CREEK 8700 9.7 9.3 104 11.1 11.5 97
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Basin wide percent of average 138 130
BIGHORN BASIN
BALD MTN. 9375 21.0 19.4 108 17.4 16.2 107
BEAR TRAP MEADOW 7900 7.7 6.7 115 8.2 7.5 109
BLACKWATER 9780 36.9 21.0 176 28.0 17.1 164
BONE SPRINGS DIV 9350 17.5 15.5 113 15.5 13.9 112
EVENING STAR 9200 40.3 25.6 157 38.8 21.4 181
GRAVE SPRINGS 8550 10.8 -M * 10.1 8.8 115
KIRWIN 9550 14.1 9.4 150 15.2 10.0 152
LOST CREEK 8080 14.1 12.6 112 14.2 10.9 130
MARQUETTE 8760 10.2 7.6 134 10.8 8.6 126
MIDDLE POWDER 7760 14.5 11.4 127 13.1 10.9 120
OWL CREEK 8975 7.5 4.3 174 6.4 5.7 112
POWDER RIVER PASS 9480 12.1 10.3 117 12.6 10.8 117
SHELL CREEK 9580 16.8 14.2 118 13.9 12.2 114
SYLVAN LAKE 8420 31.2 21.1 148 31.8 18.2 175
SYLVAN ROAD 8120 19.9 12.4 160 26.0 15.3 170
TIMBER CREEK 7950 6.7 5.8 116 7.5 6.3 119
YOUNTS PEAK 8350 23.3 16.5 141 -M 15.7 *
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Basin wide percent of average 137 139
SHOSHONE RIVER
BLACKWATER 9780 36.9 21.0 176 28.0 17.1 164
EVENING STAR 9200 40.3 25.6 157 38.8 21.4 181
KIRWIN 9550 14.1 9.4 150 15.2 10.0 152
MARQUETTE 8760 10.2 7.6 134 10.8 8.6 126
SYLVAN LAKE 8420 31.2 21.1 148 31.8 18.2 175
SYLVAN ROAD 8120 19.9 12.4 160 26.0 15.3 170
YOUNTS PEAK 8350 23.3 16.5 141 -M 15.7 *
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Basin wide percent of average 155 166
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.7 6.7 115 8.2 7.5 109
BONE SPRINGS DIV 9350 17.5 15.5 113 15.5 13.9 112
BURGESS JUNCTION 7880 11.9 11.1 107 12.2 10.5 116
CLOUD PEAK RESERVOIR 9860 16.7 13.7 122 13.9 12.2 114
DOME LAKE 8880 12.2 13.0 94 13.2 12.2 108
GRAVE SPRINGS 8550 10.8 -M * 10.1 8.8 115
HANSEN SAWMILL 8760 7.1 6.7 106 7.8 7.2 108
LOST CREEK 8080 14.1 12.6 112 14.2 10.9 130
MIDDLE POWDER 7760 14.5 11.4 127 13.1 10.9 120
POWDER RIVER PASS 9480 12.1 10.3 117 12.6 10.8 117
SUCKER CREEK 8880 12.9 11.4 113 13.8 12.2 113
TIE CREEK 6870 7.2 -M * 10.9 10.0 109
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Basin wide percent of average 113 114
BELLE FOURCHE
BLIND PARK 6890 9.9 10.5 94 14.0 9.1 154
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 16.2 10.5 154 -M 7.4 *
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Basin wide percent of average 124 154*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.2 23.9 122 29.5 23.1 128
DIVIDE PEAK 8800 24.5 19.6 125 23.8 21.3 112
ELK RIVER 8700 27.5 19.0 145 24.2 17.9 135
JOE WRIGHT 10120 20.3 20.5 99 27.4 23.3 118
NORTH FRENCH CREEK 10100 34.2 23.9 143 30.0 21.9 137
OLD BATTLE 10000 39.3 29.9 131 50.5 28.2 179
SOUTH BRUSH CREEK 8400 13.8 12.0 115 16.7 15.1 111
TOWER 10500 52.3 42.7 122 49.1 34.0 144
WEBBER SPRINGS 9200 29.3 26.1 112 34.3 23.6 145
WILLOW CREEK PASS 9540 16.5 11.0 150 14.2 11.6 122
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Basin wide percent of average 126 136
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 33.4 23.9 140 25.2 18.0 140
CASPER MTN. 7900 19.3 14.9 130 18.2 12.9 141
CHRISTINA LAKE 9980 18.8 14.5 130 21.5 15.6 138
DEADMAN HILL 10220 15.4 15.6 99 17.3 15.4 112
LAPRELE CREEK 8320 13.7 9.8 140 13.7 10.8 127
RENO HILL 8400 20.2 13.0 155 17.6 17.6 100
ROACH 9700 22.4 16.2 138 20.8 19.8 105
SAND LAKE 10080 34.7 31.0 112 27.5 19.0 145
SOUTH PASS 9040 25.4 15.6 163 24.0 15.9 151
WINDY PEAK 7840 9.8 8.0 123 11.5 8.6 134
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Basin wide percent of average 131 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.7 11.0 143 21.8 14.3 152
DIVIDE PEAK 8800 24.5 19.6 125 23.8 21.3 112
OLD BATTLE 10000 39.3 29.9 131 50.5 28.2 179
SANDSTONE RS 8150 19.1 14.1 135 21.7 17.5 124
WHISKEY PARK 8950 36.9 27.3 135 32.0 26.2 122
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Basin wide percent of average 133 139
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.3 13.9 139 17.2 15.9 108
BLIND BULL SUM 8650 41.4 28.1 147 32.5 23.3 139
EAST RIM DIVIDE 7930 16.9 13.5 125 17.0 14.8 115
ELKHART PARK G.S. 9400 18.1 13.2 137 18.2 15.6 117
GROS VENTRE SUMMIT 8775 18.5 14.9 124 20.3 15.6 130
KENDALL R.S. 7740 24.1 14.5 166 20.8 15.2 137
LOOMIS PARK 8240 -M 16.9 * 26.8 18.4 146
NEW FORK LAKE 8340 14.9 10.9 137 13.3 14.1 94
SNIDER BASIN 8250 23.4 14.3 164 19.1 14.8 129
SPRING CREEK DIVIDE 9000 33.9 26.7 127 32.2 26.7 121
TRIPLE PEAK 8500 36.8 24.5 150 36.6 30.4 120
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Basin wide percent of average 142 124
LOWER GREEN RIVER
HAMS FORK 7840 16.5 12.0 138 14.8 13.1 113
HEWINTA 9500 11.9 10.5 113 13.7 12.1 113
HICKERSON PARK 9150 7.5 6.2 121 8.9 8.7 102
HOLE-IN-ROCK 9150 7.3 5.9 124 9.3 8.7 107
INDIAN CREEK 9425 40.5 27.1 149 31.1 25.1 124
KELLEY R.S. 8180 23.8 16.4 145 25.3 18.3 138
STEEL CREEK PARK 10100 15.2 15.1 101 15.1 11.9 127
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Basin wide percent of average 132 121
UPPER BEAR RIVER
BUG LAKE 7950 32.8 19.7 166 29.3 18.3 160
HAYDEN FORK 9400 18.9 15.8 120 24.7 17.7 140
KELLEY R.S. 8180 23.8 16.4 145 25.3 18.3 138
LILY LAKE 9050 17.3 12.4 140 18.7 13.7 136
MONTE CRISTO 8960 36.2 27.6 131 32.6 24.0 136
SALT RIVER SUMMIT 7600 21.5 13.7 157 23.4 16.5 142
TRIAL LAKE 9960 35.3 24.2 146 34.2 22.5 152
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Basin wide percent of average 143 144
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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.