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 SUNDAY: MARCH 23 , 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 17.2 172 33.9 22.0 154
COTTONWOOD CREEK 7600 30.2 23.0 131 31.7 24.7 128
GRANITE CREEK 6770 27.8 17.9 155 32.5 23.2 140
GRASSY LAKE 7265 45.6 34.6 132 51.3 36.5 141
GROS VENTRE SUMMIT 8775 21.2 15.1 140 20.3 15.7 129
LEWIS LAKE DIVIDE 7860 51.9 34.2 152 46.4 37.0 125
PHILLIPS BENCH 8200 40.7 28.1 145 44.1 29.3 151
SALT RIVER SUMMIT 7600 21.6 13.9 155 23.3 16.7 140
SNAKE RIVER STATION 6920 27.2 18.2 149 35.6 25.6 139
SPRING CREEK DIVIDE 9000 34.0 27.0 126 32.2 26.9 120
THUMB DIVIDE 7980 31.1 16.5 188 -M 20.6 *
TOGWOTEE PASS 9580 33.6 24.0 140 -M 27.8 *
TWO OCEAN PLATEAU 9360 43.7 25.7 170 -M 30.3 *
WILLOW CREEK 8450 40.6 29.4 138 39.6 31.7 125
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Basin wide percent of average 147 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 34.6 22.7 152 29.7 17.3 172
BLACK BEAR 7950 -M 36.8 * -M 39.1 *
CANYON 7940 23.9 12.5 191 25.8 13.7 188
FISHER CREEK 9100 54.8 34.5 159 -M 35.2 *
MADISON PLATEAU 7750 41.0 23.7 173 41.7 25.3 165
NORTHEAST ENTRANCE 7350 11.9 9.0 132 18.9 11.4 166
PARKER PEAK 9400 30.7 20.8 148 -M 14.9 *
SYLVAN LAKE 8420 31.5 21.3 148 31.8 18.4 173
THUMB DIVIDE 7980 31.1 16.5 188 -M 20.6 *
TWO OCEAN PLATEAU 9360 43.7 25.7 170 -M 30.3 *
WHISKEY CREEK 6800 24.8 16.7 149 31.1 21.0 148
WHITE MILL 8700 37.8 24.3 156 -M 27.3 *
WOLVERINE 7650 14.3 11.3 127 15.1 12.3 123
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Basin wide percent of average 159 163
WIND RIVER
BURROUGHS CREEK 8750 23.6 14.6 162 25.3 15.9 159
CHRISTINA LAKE 9980 18.9 14.7 129 21.5 15.8 136
COLD SPRINGS 9630 9.9 8.0 124 11.1 10.0 111
HOBBS PARK 10100 16.6 14.3 116 12.8 13.3 96
LITTLE WARM 9620 16.2 11.0 147 18.0 12.6 143
SOUTH PASS 9040 25.2 15.8 159 24.0 16.1 149
ST. LAWRENCE ALT 8620 8.2 7.3 112 10.1 9.6 105
TOGWOTEE PASS 9580 33.6 24.0 140 -M 27.8 *
TOWNSEND CREEK 8700 9.9 9.4 105 11.0 11.7 94
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Basin wide percent of average 136 127
BIGHORN BASIN
BALD MTN. 9375 21.0 19.6 107 17.4 16.4 106
BEAR TRAP MEADOW 7900 7.4 6.8 109 8.0 7.6 105
BLACKWATER 9780 37.1 21.2 175 28.2 17.3 163
BONE SPRINGS DIV 9350 17.6 15.7 112 15.5 14.1 110
EVENING STAR 9200 40.5 25.9 156 38.8 21.6 180
GRAVE SPRINGS 8550 10.9 -M * 10.1 9.0 112
KIRWIN 9550 14.1 9.5 148 15.3 10.2 150
LOST CREEK 8080 14.1 12.8 110 14.2 11.1 128
MARQUETTE 8760 10.5 7.7 136 10.8 8.8 123
MIDDLE POWDER 7760 14.9 11.5 130 13.2 11.0 120
OWL CREEK 8975 7.8 4.3 181 6.3 5.8 109
POWDER RIVER PASS 9480 12.9 10.4 124 12.9 10.9 118
SHELL CREEK 9580 16.8 14.4 117 14.0 12.4 113
SYLVAN LAKE 8420 31.5 21.3 148 31.8 18.4 173
SYLVAN ROAD 8120 20.0 12.4 161 26.1 15.4 169
TIMBER CREEK 7950 6.9 5.9 117 7.5 6.4 117
YOUNTS PEAK 8350 23.4 16.6 141 -M 15.9 *
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Basin wide percent of average 137 138
SHOSHONE RIVER
BLACKWATER 9780 37.1 21.2 175 28.2 17.3 163
EVENING STAR 9200 40.5 25.9 156 38.8 21.6 180
KIRWIN 9550 14.1 9.5 148 15.3 10.2 150
MARQUETTE 8760 10.5 7.7 136 10.8 8.8 123
SYLVAN LAKE 8420 31.5 21.3 148 31.8 18.4 173
SYLVAN ROAD 8120 20.0 12.4 161 26.1 15.4 169
YOUNTS PEAK 8350 23.4 16.6 141 -M 15.9 *
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Basin wide percent of average 155 165
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.4 6.8 109 8.0 7.6 105
BONE SPRINGS DIV 9350 17.6 15.7 112 15.5 14.1 110
BURGESS JUNCTION 7880 12.2 11.2 109 12.0 10.7 112
CLOUD PEAK RESERVOIR 9860 16.9 13.9 122 13.9 12.4 112
DOME LAKE 8880 12.2 13.1 93 13.2 12.4 106
GRAVE SPRINGS 8550 10.9 -M * 10.1 9.0 112
HANSEN SAWMILL 8760 7.3 6.8 107 7.9 7.3 108
LOST CREEK 8080 14.1 12.8 110 14.2 11.1 128
MIDDLE POWDER 7760 14.9 11.5 130 13.2 11.0 120
POWDER RIVER PASS 9480 12.9 10.4 124 12.9 10.9 118
SUCKER CREEK 8880 13.3 11.5 116 13.7 12.3 111
TIE CREEK 6870 6.8 -M * 10.8 10.2 106
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Basin wide percent of average 113 113
BELLE FOURCHE
BLIND PARK 6890 9.7 10.6 92 13.9 9.3 149
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 16.1 10.6 152 -M 7.5 *
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Basin wide percent of average 122 149*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.3 24.1 117 29.5 23.3 127
DIVIDE PEAK 8800 24.6 19.9 124 23.8 21.6 110
ELK RIVER 8700 26.7 19.2 139 24.2 18.1 134
JOE WRIGHT 10120 22.1 20.8 106 27.3 23.6 116
NORTH FRENCH CREEK 10100 34.0 24.2 140 30.0 22.2 135
OLD BATTLE 10000 39.2 30.3 129 50.5 28.5 177
SOUTH BRUSH CREEK 8400 13.5 12.2 111 16.7 15.3 109
TOWER 10500 52.3 43.2 121 49.1 34.4 143
WEBBER SPRINGS 9200 29.0 26.5 109 34.4 23.9 144
WILLOW CREEK PASS 9540 16.7 11.2 149 14.2 11.8 120
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Basin wide percent of average 124 135
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 34.2 24.4 140 25.8 18.3 141
CASPER MTN. 7900 19.3 15.2 127 18.2 13.1 139
CHRISTINA LAKE 9980 18.9 14.7 129 21.5 15.8 136
DEADMAN HILL 10220 15.2 15.8 96 17.2 15.6 110
LAPRELE CREEK 8320 13.8 10.0 138 13.6 11.0 124
RENO HILL 8400 20.4 13.3 153 17.5 17.9 98
ROACH 9700 22.6 16.4 138 20.8 20.0 104
SAND LAKE 10080 34.6 31.4 110 27.5 19.2 143
SOUTH PASS 9040 25.2 15.8 159 24.0 16.1 149
WINDY PEAK 7840 9.9 8.2 121 11.1 8.8 126
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Basin wide percent of average 130 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.2 11.0 138 23.8 14.5 164
DIVIDE PEAK 8800 24.6 19.9 124 23.8 21.6 110
OLD BATTLE 10000 39.2 30.3 129 50.5 28.5 177
SANDSTONE RS 8150 18.2 14.3 127 21.7 17.7 123
WHISKEY PARK 8950 36.3 27.6 132 32.2 26.5 122
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Basin wide percent of average 129 140
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.3 14.0 138 17.4 16.0 109
BLIND BULL SUM 8650 41.3 28.4 145 32.5 23.6 138
EAST RIM DIVIDE 7930 16.8 13.6 124 17.0 14.9 114
ELKHART PARK G.S. 9400 18.3 13.3 138 18.2 15.7 116
GROS VENTRE SUMMIT 8775 21.2 15.1 140 20.3 15.7 129
KENDALL R.S. 7740 24.0 14.5 166 23.7 15.3 155
LOOMIS PARK 8240 -M 17.0 * 26.8 18.6 144
NEW FORK LAKE 8340 14.6 11.0 133 13.2 14.2 93
SNIDER BASIN 8250 23.2 14.4 161 19.1 14.9 128
SPRING CREEK DIVIDE 9000 34.0 27.0 126 32.2 26.9 120
TRIPLE PEAK 8500 36.6 24.8 148 36.5 30.6 119
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Basin wide percent of average 142 124
LOWER GREEN RIVER
HAMS FORK 7840 16.2 12.1 134 14.7 13.2 111
HEWINTA 9500 11.3 10.7 106 13.7 12.3 111
HICKERSON PARK 9150 7.4 6.3 117 8.8 8.8 100
HOLE-IN-ROCK 9150 7.3 6.0 122 9.3 8.8 106
INDIAN CREEK 9425 39.4 27.5 143 31.1 25.4 122
KELLEY R.S. 8180 23.5 16.6 142 25.6 18.5 138
STEEL CREEK PARK 10100 15.3 15.4 99 15.1 12.1 125
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Basin wide percent of average 127 119
UPPER BEAR RIVER
BUG LAKE 7950 33.0 20.0 165 29.3 18.5 158
HAYDEN FORK 9400 18.3 15.9 115 24.7 18.0 137
KELLEY R.S. 8180 23.5 16.6 142 25.6 18.5 138
LILY LAKE 9050 17.2 12.6 137 18.8 13.9 135
MONTE CRISTO 8960 37.1 28.0 133 32.6 24.3 134
SALT RIVER SUMMIT 7600 21.6 13.9 155 23.3 16.7 140
TRIAL LAKE 9960 35.1 24.3 144 34.2 22.8 150
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Basin wide percent of average 142 142
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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.