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 20 , 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 29.8 17.0 175 33.6 21.8 154
COTTONWOOD CREEK 7600 30.7 22.5 136 31.2 24.4 128
GRANITE CREEK 6770 28.0 17.6 159 32.4 22.9 141
GRASSY LAKE 7265 45.0 34.0 132 51.6 35.9 144
GROS VENTRE SUMMIT 8775 21.5 14.8 145 20.3 15.5 131
LEWIS LAKE DIVIDE 7860 52.0 33.7 154 -M 36.5 *
PHILLIPS BENCH 8200 40.7 27.7 147 44.0 28.9 152
SALT RIVER SUMMIT 7600 21.7 13.7 158 23.4 16.4 143
SNAKE RIVER STATION 6920 27.8 18.0 154 35.2 25.2 140
SPRING CREEK DIVIDE 9000 33.9 26.5 128 32.2 26.6 121
THUMB DIVIDE 7980 32.9 16.2 203 -M 20.3 *
TOGWOTEE PASS 9580 33.6 23.6 142 -M 27.3 *
TWO OCEAN PLATEAU 9360 43.1 25.3 170 -M 30.0 *
WILLOW CREEK 8450 40.7 29.0 140 39.0 31.2 125
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Basin wide percent of average 151 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 34.4 22.4 154 -M 17.0 *
BLACK BEAR 7950 -M 36.2 * -M 38.4 *
CANYON 7940 23.4 12.3 190 25.8 13.5 191
FISHER CREEK 9100 54.7 34.0 161 -M 34.6 *
MADISON PLATEAU 7750 41.1 23.3 176 41.3 24.8 167
NORTHEAST ENTRANCE 7350 12.4 8.9 139 18.8 11.2 168
PARKER PEAK 9400 30.7 20.5 150 -M 14.7 *
SYLVAN LAKE 8420 30.9 21.0 147 -M 18.1 *
THUMB DIVIDE 7980 32.9 16.2 203 -M 20.3 *
TWO OCEAN PLATEAU 9360 43.1 25.3 170 -M 30.0 *
WHISKEY CREEK 6800 24.9 16.4 152 31.0 20.6 150
WHITE MILL 8700 37.6 24.0 157 -M 26.8 *
WOLVERINE 7650 15.3 11.2 137 15.1 12.1 125
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Basin wide percent of average 162 161*
WIND RIVER
BURROUGHS CREEK 8750 23.6 14.4 164 -M 15.7 *
CHRISTINA LAKE 9980 18.9 14.4 131 21.5 15.4 140
COLD SPRINGS 9630 10.0 7.9 127 11.2 9.7 115
HOBBS PARK 10100 16.5 14.0 118 12.8 13.0 98
LITTLE WARM 9620 16.3 10.8 151 18.1 12.3 147
SOUTH PASS 9040 25.5 15.6 163 24.0 15.8 152
ST. LAWRENCE ALT 8620 8.4 7.2 117 10.1 9.3 109
TOGWOTEE PASS 9580 33.6 23.6 142 -M 27.3 *
TOWNSEND CREEK 8700 9.8 9.3 105 11.1 11.5 97
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Basin wide percent of average 139 125
BIGHORN BASIN
BALD MTN. 9375 21.0 19.3 109 17.4 16.1 108
BEAR TRAP MEADOW 7900 7.8 6.7 116 8.2 7.5 109
BLACKWATER 9780 36.8 20.8 177 27.9 17.0 164
BONE SPRINGS DIV 9350 17.6 15.4 114 15.5 13.8 112
EVENING STAR 9200 40.5 25.5 159 -M 21.3 *
GRAVE SPRINGS 8550 10.8 -M * 10.1 8.7 116
KIRWIN 9550 13.9 9.3 149 15.2 9.9 154
LOST CREEK 8080 14.1 12.5 113 14.2 10.8 131
MARQUETTE 8760 10.4 7.5 139 10.8 8.6 126
MIDDLE POWDER 7760 14.6 11.3 129 13.1 10.8 121
OWL CREEK 8975 7.7 4.2 183 6.5 5.7 114
POWDER RIVER PASS 9480 12.0 10.2 118 12.6 10.7 118
SHELL CREEK 9580 16.8 14.2 118 13.9 12.1 115
SYLVAN LAKE 8420 30.9 21.0 147 -M 18.1 *
SYLVAN ROAD 8120 20.2 12.4 163 25.8 15.2 170
TIMBER CREEK 7950 6.9 5.8 119 7.5 6.3 119
YOUNTS PEAK 8350 23.2 16.4 141 -M 15.6 *
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Basin wide percent of average 139 130
SHOSHONE RIVER
BLACKWATER 9780 36.8 20.8 177 27.9 17.0 164
EVENING STAR 9200 40.5 25.5 159 -M 21.3 *
KIRWIN 9550 13.9 9.3 149 15.2 9.9 154
MARQUETTE 8760 10.4 7.5 139 10.8 8.6 126
SYLVAN LAKE 8420 30.9 21.0 147 -M 18.1 *
SYLVAN ROAD 8120 20.2 12.4 163 25.8 15.2 170
YOUNTS PEAK 8350 23.2 16.4 141 -M 15.6 *
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Basin wide percent of average 156 157
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.8 6.7 116 8.2 7.5 109
BONE SPRINGS DIV 9350 17.6 15.4 114 15.5 13.8 112
BURGESS JUNCTION 7880 11.9 11.0 108 12.3 10.4 118
CLOUD PEAK RESERVOIR 9860 16.6 13.6 122 13.9 12.1 115
DOME LAKE 8880 12.2 12.9 95 13.2 12.1 109
GRAVE SPRINGS 8550 10.8 -M * 10.1 8.7 116
HANSEN SAWMILL 8760 7.2 6.7 107 7.8 7.2 108
LOST CREEK 8080 14.1 12.5 113 14.2 10.8 131
MIDDLE POWDER 7760 14.6 11.3 129 13.1 10.8 121
POWDER RIVER PASS 9480 12.0 10.2 118 12.6 10.7 118
SUCKER CREEK 8880 13.1 11.3 116 13.8 12.1 114
TIE CREEK 6870 7.8 -M * 10.9 9.9 110
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Basin wide percent of average 114 115
BELLE FOURCHE
BLIND PARK 6890 10.0 10.4 96 14.0 9.1 154
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 16.6 10.4 160 -M 7.3 *
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Basin wide percent of average 128 154*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.6 23.8 124 29.5 23.0 128
DIVIDE PEAK 8800 24.6 19.5 126 23.9 21.2 113
ELK RIVER 8700 27.5 18.9 146 24.2 17.8 136
JOE WRIGHT 10120 20.8 20.3 102 27.4 23.1 119
NORTH FRENCH CREEK 10100 34.2 23.7 144 30.0 21.7 138
OLD BATTLE 10000 11.6 29.7 39 50.5 28.0 180
SOUTH BRUSH CREEK 8400 14.1 11.8 119 16.7 15.0 111
TOWER 10500 52.3 42.4 123 36.8 33.8 109
WEBBER SPRINGS 9200 29.9 25.9 115 34.3 23.5 146
WILLOW CREEK PASS 9540 16.9 10.9 155 14.0 11.6 121
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Basin wide percent of average 115 131
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 33.1 23.7 140 25.0 17.9 140
CASPER MTN. 7900 19.2 14.7 131 18.2 12.8 142
CHRISTINA LAKE 9980 18.9 14.4 131 21.5 15.4 140
DEADMAN HILL 10220 15.2 15.5 98 17.2 15.3 112
LAPRELE CREEK 8320 13.8 9.8 141 13.7 10.8 127
RENO HILL 8400 20.3 12.9 157 17.6 17.4 101
ROACH 9700 22.4 16.1 139 20.8 19.6 106
SAND LAKE 10080 34.7 30.8 113 27.5 18.8 146
SOUTH PASS 9040 25.5 15.6 163 24.0 15.8 152
WINDY PEAK 7840 10.0 8.0 125 11.6 8.6 135
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Basin wide percent of average 132 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.0 10.9 147 20.9 14.3 146
DIVIDE PEAK 8800 24.6 19.5 126 23.9 21.2 113
OLD BATTLE 10000 11.6 29.7 39 50.5 28.0 180
SANDSTONE RS 8150 19.6 14.0 140 21.6 17.4 124
WHISKEY PARK 8950 37.0 27.1 137 31.8 26.0 122
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Basin wide percent of average 108 139
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.3 13.8 140 16.1 15.8 102
BLIND BULL SUM 8650 41.3 27.9 148 32.4 23.2 140
EAST RIM DIVIDE 7930 16.9 13.4 126 17.0 14.8 115
ELKHART PARK G.S. 9400 18.2 13.1 139 18.2 15.5 117
GROS VENTRE SUMMIT 8775 21.5 14.8 145 20.3 15.5 131
KENDALL R.S. 7740 24.2 14.5 167 19.8 15.1 131
LOOMIS PARK 8240 -M 16.8 * 26.8 18.3 146
NEW FORK LAKE 8340 14.9 10.9 137 13.3 14.1 94
SNIDER BASIN 8250 23.5 14.3 164 19.1 14.8 129
SPRING CREEK DIVIDE 9000 33.9 26.5 128 32.2 26.6 121
TRIPLE PEAK 8500 36.5 24.4 150 36.5 30.2 121
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Basin wide percent of average 144 123
LOWER GREEN RIVER
HAMS FORK 7840 17.0 12.0 142 14.7 13.0 113
HEWINTA 9500 12.9 10.4 124 13.7 12.0 114
HICKERSON PARK 9150 7.7 6.1 126 8.9 8.6 103
HOLE-IN-ROCK 9150 7.2 5.8 124 9.3 8.6 108
INDIAN CREEK 9425 39.7 27.0 147 31.1 25.0 124
KELLEY R.S. 8180 23.7 16.3 145 25.1 18.3 137
STEEL CREEK PARK 10100 15.3 15.0 102 15.1 11.8 128
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Basin wide percent of average 133 121
UPPER BEAR RIVER
BUG LAKE 7950 32.7 19.6 167 29.2 18.2 160
HAYDEN FORK 9400 19.5 15.7 124 24.7 17.6 140
KELLEY R.S. 8180 23.7 16.3 145 25.1 18.3 137
LILY LAKE 9050 18.3 12.3 149 18.8 13.6 138
MONTE CRISTO 8960 37.1 27.4 135 32.6 23.8 137
SALT RIVER SUMMIT 7600 21.7 13.7 158 23.4 16.4 143
TRIAL LAKE 9960 36.3 24.1 151 34.2 22.3 153
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Basin wide percent of average 147 144
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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.