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 THURSDAY: MARCH 13 , 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 28.7 16.6 173 32.7 21.1 155
COTTONWOOD CREEK 7600 29.1 21.2 137 30.4 23.6 129
GRANITE CREEK 6770 28.2 16.9 167 23.2 22.2 105
GRASSY LAKE 7265 43.5 32.5 134 39.0 34.7 112
GROS VENTRE SUMMIT 8775 20.6 14.2 145 19.3 15.0 129
LEWIS LAKE DIVIDE 7860 50.4 32.3 156 -M 35.2 *
PHILLIPS BENCH 8200 39.1 26.6 147 42.8 27.8 154
SALT RIVER SUMMIT 7600 21.0 13.1 160 22.6 16.0 141
SNAKE RIVER STATION 6920 27.2 17.5 155 34.2 24.3 141
SPRING CREEK DIVIDE 9000 33.0 25.4 130 -M 25.6 *
THUMB DIVIDE 7980 30.6 15.6 196 -M 19.8 *
TOGWOTEE PASS 9580 32.3 22.6 143 -M 26.4 *
TWO OCEAN PLATEAU 9360 41.5 24.3 171 -M 29.1 *
WILLOW CREEK 8450 37.2 28.0 133 38.2 30.3 126
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Basin wide percent of average 151 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 32.5 21.5 151 -M 16.3 *
BLACK BEAR 7950 -M 34.7 * -M 36.6 *
CANYON 7940 22.7 11.7 194 25.0 13.0 192
FISHER CREEK 9100 52.3 32.7 160 -M 33.2 *
MADISON PLATEAU 7750 39.5 22.4 176 40.5 23.7 171
NORTHEAST ENTRANCE 7350 12.0 8.7 138 18.1 10.9 166
PARKER PEAK 9400 29.8 19.7 151 -M 14.1 *
SYLVAN LAKE 8420 29.7 20.1 148 -M 17.5 *
THUMB DIVIDE 7980 30.6 15.6 196 -M 19.8 *
TWO OCEAN PLATEAU 9360 41.5 24.3 171 -M 29.1 *
WHISKEY CREEK 6800 24.1 15.8 153 29.9 19.6 153
WHITE MILL 8700 35.9 23.2 155 -M 25.7 *
WOLVERINE 7650 15.0 10.9 138 14.6 11.7 125
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Basin wide percent of average 161 162*
WIND RIVER
BURROUGHS CREEK 8750 22.7 14.0 162 -M 15.0 *
CHRISTINA LAKE 9980 18.7 13.8 136 21.0 14.7 143
COLD SPRINGS 9630 10.0 7.6 132 11.0 9.3 118
HOBBS PARK 10100 16.0 13.3 120 12.6 12.4 102
LITTLE WARM 9620 15.8 10.2 155 17.3 11.8 147
SOUTH PASS 9040 24.9 15.0 166 23.3 15.1 154
ST. LAWRENCE ALT 8620 8.6 6.9 125 9.9 8.9 111
TOGWOTEE PASS 9580 32.3 22.6 143 -M 26.4 *
TOWNSEND CREEK 8700 9.6 8.9 108 10.8 10.8 100
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Basin wide percent of average 141 128
BIGHORN BASIN
BALD MTN. 9375 20.5 18.5 111 17.1 15.4 111
BEAR TRAP MEADOW 7900 7.5 6.4 117 7.7 7.0 110
BLACKWATER 9780 35.4 19.9 178 26.8 16.3 164
BONE SPRINGS DIV 9350 17.2 14.7 117 15.2 13.0 117
EVENING STAR 9200 39.0 24.5 159 -M 20.4 *
GRAVE SPRINGS 8550 10.5 -M * 9.9 8.3 119
KIRWIN 9550 13.6 8.9 153 14.9 9.5 157
LOST CREEK 8080 14.1 11.8 119 13.9 10.3 135
MARQUETTE 8760 10.0 7.2 139 10.5 8.0 131
MIDDLE POWDER 7760 14.2 10.7 133 12.9 10.2 126
OWL CREEK 8975 7.5 4.0 188 6.1 5.4 113
POWDER RIVER PASS 9480 12.4 9.7 128 12.4 10.2 122
SHELL CREEK 9580 16.5 13.6 121 13.5 11.6 116
SYLVAN LAKE 8420 29.7 20.1 148 -M 17.5 *
SYLVAN ROAD 8120 19.8 12.1 164 25.4 14.6 174
TIMBER CREEK 7950 6.9 5.5 125 7.4 5.8 128
YOUNTS PEAK 8350 22.3 15.8 141 -M 15.0 *
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Basin wide percent of average 141 133
SHOSHONE RIVER
BLACKWATER 9780 35.4 19.9 178 26.8 16.3 164
EVENING STAR 9200 39.0 24.5 159 -M 20.4 *
KIRWIN 9550 13.6 8.9 153 14.9 9.5 157
MARQUETTE 8760 10.0 7.2 139 10.5 8.0 131
SYLVAN LAKE 8420 29.7 20.1 148 -M 17.5 *
SYLVAN ROAD 8120 19.8 12.1 164 25.4 14.6 174
YOUNTS PEAK 8350 22.3 15.8 141 -M 15.0 *
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Basin wide percent of average 156 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.5 6.4 117 7.7 7.0 110
BONE SPRINGS DIV 9350 17.2 14.7 117 15.2 13.0 117
BURGESS JUNCTION 7880 11.6 10.6 109 11.5 9.7 119
CLOUD PEAK RESERVOIR 9860 16.3 12.7 128 13.4 11.5 117
DOME LAKE 8880 11.4 12.3 93 12.7 11.5 110
GRAVE SPRINGS 8550 10.5 -M * 9.9 8.3 119
HANSEN SAWMILL 8760 7.1 6.4 111 7.5 6.7 112
LOST CREEK 8080 14.1 11.8 119 13.9 10.3 135
MIDDLE POWDER 7760 14.2 10.7 133 12.9 10.2 126
POWDER RIVER PASS 9480 12.4 9.7 128 12.4 10.2 122
SUCKER CREEK 8880 13.1 10.7 122 13.1 11.5 114
TIE CREEK 6870 7.8 -M * 10.5 9.3 113
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Basin wide percent of average 118 118
BELLE FOURCHE
BLIND PARK 6890 9.8 10.0 98 13.9 8.5 164
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 16.6 10.0 166 -M 6.9 *
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Basin wide percent of average 132 164*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.9 23.1 125 29.0 22.0 132
DIVIDE PEAK 8800 23.4 18.4 127 23.0 20.3 113
ELK RIVER 8700 27.7 18.2 152 24.0 16.9 142
JOE WRIGHT 10120 21.4 19.3 111 26.5 22.1 120
NORTH FRENCH CREEK 10100 33.5 22.5 149 29.6 20.7 143
OLD BATTLE 10000 33.9 28.3 120 33.2 26.7 124
SOUTH BRUSH CREEK 8400 13.9 10.9 128 16.1 14.2 113
TOWER 10500 51.6 40.6 127 36.6 32.4 113
WEBBER SPRINGS 9200 29.5 24.5 120 33.6 22.4 150
WILLOW CREEK PASS 9540 16.6 10.3 161 13.9 10.9 128
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Basin wide percent of average 130 127
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 31.6 22.2 142 24.3 17.0 143
CASPER MTN. 7900 19.1 13.7 139 17.9 12.0 149
CHRISTINA LAKE 9980 18.7 13.8 136 21.0 14.7 143
DEADMAN HILL 10220 14.6 14.8 99 16.6 14.4 115
LAPRELE CREEK 8320 14.2 9.3 153 13.5 10.1 134
RENO HILL 8400 19.9 12.1 164 17.2 16.4 105
ROACH 9700 20.5 15.4 133 20.4 18.8 109
SAND LAKE 10080 33.4 29.4 114 26.3 18.0 146
SOUTH PASS 9040 24.9 15.0 166 23.3 15.1 154
WINDY PEAK 7840 9.7 7.4 131 11.1 8.0 139
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Basin wide percent of average 135 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 17.2 10.7 161 17.7 13.6 130
DIVIDE PEAK 8800 23.4 18.4 127 23.0 20.3 113
OLD BATTLE 10000 33.9 28.3 120 33.2 26.7 124
SANDSTONE RS 8150 19.4 13.4 145 21.3 16.6 128
WHISKEY PARK 8950 37.2 25.9 144 31.2 24.7 126
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Basin wide percent of average 136 124
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.4 13.2 139 17.3 15.3 113
BLIND BULL SUM 8650 39.6 26.7 148 31.3 22.4 140
EAST RIM DIVIDE 7930 16.3 13.0 125 16.5 14.3 115
ELKHART PARK G.S. 9400 17.4 12.6 138 17.5 15.1 116
GROS VENTRE SUMMIT 8775 20.6 14.2 145 19.3 15.0 129
KENDALL R.S. 7740 23.6 14.1 167 18.5 14.7 126
LOOMIS PARK 8240 -M 16.3 * 20.6 17.8 116
NEW FORK LAKE 8340 14.1 10.6 133 12.9 13.6 95
SNIDER BASIN 8250 22.1 13.8 160 18.6 14.3 130
SPRING CREEK DIVIDE 9000 33.0 25.4 130 -M 25.6 *
TRIPLE PEAK 8500 34.0 23.5 145 35.1 29.4 119
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Basin wide percent of average 143 121
LOWER GREEN RIVER
HAMS FORK 7840 17.2 11.7 147 14.3 12.6 113
HEWINTA 9500 13.0 9.8 133 13.6 11.3 120
HICKERSON PARK 9150 7.1 5.7 125 8.7 8.1 107
HOLE-IN-ROCK 9150 8.1 5.4 150 9.3 8.1 115
INDIAN CREEK 9425 37.5 25.6 146 30.2 24.1 125
KELLEY R.S. 8180 23.1 15.7 147 24.8 17.7 140
STEEL CREEK PARK 10100 15.3 14.1 109 15.0 11.3 133
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Basin wide percent of average 138 124
UPPER BEAR RIVER
BUG LAKE 7950 31.9 18.6 172 28.6 17.3 165
HAYDEN FORK 9400 19.9 15.2 131 24.6 16.7 147
KELLEY R.S. 8180 23.1 15.7 147 24.8 17.7 140
LILY LAKE 9050 17.7 11.6 153 18.6 12.9 144
MONTE CRISTO 8960 37.3 26.0 143 31.9 22.7 141
SALT RIVER SUMMIT 7600 21.0 13.1 160 22.6 16.0 141
TRIAL LAKE 9960 35.8 23.3 154 34.0 21.4 159
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Basin wide percent of average 151 148
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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.