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: APRIL 6 , 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 30.4 17.2 177 35.0 23.2 151
COTTONWOOD CREEK 7600 31.4 24.1 130 33.1 26.1 127
GRANITE CREEK 6770 29.1 18.4 158 33.2 24.5 136
GRASSY LAKE 7265 46.9 36.8 127 53.0 38.7 137
GROS VENTRE SUMMIT 8775 23.1 15.9 145 21.6 16.6 130
LEWIS LAKE DIVIDE 7860 51.6 36.1 143 45.7 39.4 116
PHILLIPS BENCH 8200 43.4 29.9 145 46.3 31.1 149
SALT RIVER SUMMIT 7600 21.7 14.3 152 23.8 17.6 135
SNAKE RIVER STATION 6920 29.2 18.7 156 36.8 27.2 135
SPRING CREEK DIVIDE 9000 36.3 28.7 126 33.0 28.6 115
THUMB DIVIDE 7980 32.1 17.3 186 33.6 21.7 155
TOGWOTEE PASS 9580 35.3 25.8 137 34.2 29.5 116
TWO OCEAN PLATEAU 9360 45.6 26.7 171 -M 32.0 *
WILLOW CREEK 8450 40.2 30.9 130 43.9 33.5 131
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Basin wide percent of average 146 132
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.7 24.4 146 30.7 18.7 164
BLACK BEAR 7950 -M 39.1 * -M 42.2 *
CANYON 7940 23.8 13.2 180 27.0 14.7 184
FISHER CREEK 9100 56.1 36.7 153 -M 38.0 *
MADISON PLATEAU 7750 42.3 25.1 169 42.2 27.2 155
NORTHEAST ENTRANCE 7350 12.1 9.1 133 19.5 12.2 160
PARKER PEAK 9400 32.4 22.3 145 -M 16.1 *
SYLVAN LAKE 8420 32.6 22.9 142 33.4 19.8 169
THUMB DIVIDE 7980 32.1 17.3 186 33.6 21.7 155
TWO OCEAN PLATEAU 9360 45.6 26.7 171 -M 32.0 *
WHISKEY CREEK 6800 25.7 17.8 144 32.2 22.7 142
WHITE MILL 8700 38.2 25.4 150 -M 29.4 *
WOLVERINE 7650 13.8 11.7 118 15.7 13.2 119
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Basin wide percent of average 155 156
WIND RIVER
BURROUGHS CREEK 8750 24.0 15.1 159 26.1 17.2 152
CHRISTINA LAKE 9980 20.6 15.9 130 23.7 17.4 136
COLD SPRINGS 9630 10.6 8.5 125 13.0 11.0 118
HOBBS PARK 10100 18.6 15.6 119 14.9 14.7 101
LITTLE WARM 9620 18.0 12.3 146 20.7 13.8 150
SOUTH PASS 9040 25.4 16.8 151 25.8 17.7 146
ST. LAWRENCE ALT 8620 9.4 7.4 127 11.9 10.6 112
TOGWOTEE PASS 9580 35.3 25.8 137 34.2 29.5 116
TOWNSEND CREEK 8700 10.9 10.1 108 13.3 13.0 102
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Basin wide percent of average 136 127
BIGHORN BASIN
BALD MTN. 9375 23.3 21.1 110 18.9 18.0 105
BEAR TRAP MEADOW 7900 7.3 7.1 103 9.2 8.6 107
BLACKWATER 9780 38.5 23.2 166 29.0 18.5 157
BONE SPRINGS DIV 9350 19.8 17.1 116 17.1 15.6 110
EVENING STAR 9200 41.6 27.9 149 40.5 23.2 175
GRAVE SPRINGS 8550 13.5 -M * 12.2 10.1 121
KIRWIN 9550 15.3 10.4 147 16.2 11.2 145
LOST CREEK 8080 17.7 14.2 125 17.0 12.3 138
MARQUETTE 8760 12.6 8.3 152 12.6 10.2 124
MIDDLE POWDER 7760 19.1 12.7 150 15.8 12.3 128
OWL CREEK 8975 8.5 4.6 185 6.8 6.5 105
POWDER RIVER PASS 9480 -M 11.2 * 14.1 12.0 118
SHELL CREEK 9580 18.8 15.4 122 15.7 13.6 115
SYLVAN LAKE 8420 32.6 22.9 142 33.4 19.8 169
SYLVAN ROAD 8120 21.0 11.9 176 27.5 16.6 166
TIMBER CREEK 7950 7.6 6.4 119 8.9 7.5 119
YOUNTS PEAK 8350 24.4 17.7 138 31.5 17.1 184
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Basin wide percent of average 139 140
SHOSHONE RIVER
BLACKWATER 9780 38.5 23.2 166 29.0 18.5 157
EVENING STAR 9200 41.6 27.9 149 40.5 23.2 175
KIRWIN 9550 15.3 10.4 147 16.2 11.2 145
MARQUETTE 8760 12.6 8.3 152 12.6 10.2 124
SYLVAN LAKE 8420 32.6 22.9 142 33.4 19.8 169
SYLVAN ROAD 8120 21.0 11.9 176 27.5 16.6 166
YOUNTS PEAK 8350 24.4 17.7 138 31.5 17.1 184
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Basin wide percent of average 152 164
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 7.1 103 9.2 8.6 107
BONE SPRINGS DIV 9350 19.8 17.1 116 17.1 15.6 110
BURGESS JUNCTION 7880 15.8 12.2 130 14.8 12.0 123
CLOUD PEAK RESERVOIR 9860 19.3 15.6 124 16.6 13.9 119
DOME LAKE 8880 15.2 14.2 107 16.0 13.7 117
GRAVE SPRINGS 8550 13.5 -M * 12.2 10.1 121
HANSEN SAWMILL 8760 7.4 7.3 101 9.0 8.3 108
LOST CREEK 8080 17.7 14.2 125 17.0 12.3 138
MIDDLE POWDER 7760 19.1 12.7 150 15.8 12.3 128
POWDER RIVER PASS 9480 -M 11.2 * 14.1 12.0 118
SUCKER CREEK 8880 17.0 12.6 135 17.2 13.7 126
TIE CREEK 6870 8.3 -M * 13.8 11.5 120
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Basin wide percent of average 123 120
BELLE FOURCHE
BLIND PARK 6890 10.9 11.3 96 16.1 10.6 152
NORTH RAPID CREEK 6130 11.4 -M * 13.9 -M *
WARREN PEAK 6520 20.8 11.3 184 -M 8.4 *
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Basin wide percent of average 140 152*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.1 24.7 118 31.7 25.1 126
DIVIDE PEAK 8800 27.6 21.5 128 25.4 23.6 108
ELK RIVER 8700 27.0 20.1 134 25.2 19.7 128
JOE WRIGHT 10120 26.3 22.9 115 30.0 25.9 116
NORTH FRENCH CREEK 10100 35.9 26.5 135 27.6 24.3 114
OLD BATTLE 10000 41.6 33.5 124 38.9 31.1 125
SOUTH BRUSH CREEK 8400 13.5 13.3 102 18.1 17.0 106
TOWER 10500 55.5 46.7 119 47.9 37.4 128
WEBBER SPRINGS 9200 32.1 28.4 113 37.1 26.1 142
WILLOW CREEK PASS 9540 20.3 12.5 162 16.3 13.1 124
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Basin wide percent of average 124 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 36.5 27.3 134 28.1 20.1 140
CASPER MTN. 7900 25.1 17.5 143 22.3 14.8 151
CHRISTINA LAKE 9980 20.6 15.9 130 23.7 17.4 136
DEADMAN HILL 10220 17.1 17.0 101 19.1 17.4 110
LAPRELE CREEK 8320 16.1 10.4 155 15.5 12.3 126
RENO HILL 8400 25.8 14.8 174 22.4 19.7 114
ROACH 9700 23.1 17.7 131 22.7 21.9 104
SAND LAKE 10080 39.5 34.0 116 30.7 21.1 145
SOUTH PASS 9040 25.4 16.8 151 25.8 17.7 146
WINDY PEAK 7840 11.3 9.0 126 12.0 10.0 120
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Basin wide percent of average 133 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.4 11.2 129 28.6 15.8 181
DIVIDE PEAK 8800 27.6 21.5 128 25.4 23.6 108
OLD BATTLE 10000 41.6 33.5 124 38.9 31.1 125
SANDSTONE RS 8150 18.0 15.1 119 22.3 19.3 116
WHISKEY PARK 8950 38.4 29.6 130 33.6 29.2 115
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Basin wide percent of average 126 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.9 15.0 126 22.1 16.9 131
BLIND BULL SUM 8650 43.2 30.2 143 32.9 25.0 132
EAST RIM DIVIDE 7930 17.1 14.4 119 17.5 15.8 111
ELKHART PARK G.S. 9400 18.1 14.3 127 18.9 16.6 114
GROS VENTRE SUMMIT 8775 23.1 15.9 145 21.6 16.6 130
KENDALL R.S. 7740 23.8 14.1 169 24.0 16.2 148
LOOMIS PARK 8240 -M 17.4 * 27.7 19.7 141
NEW FORK LAKE 8340 15.3 11.1 138 13.4 15.1 89
SNIDER BASIN 8250 23.9 15.1 158 19.6 15.8 124
SPRING CREEK DIVIDE 9000 36.3 28.7 126 33.0 28.6 115
TRIPLE PEAK 8500 36.3 26.3 138 37.9 32.2 118
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Basin wide percent of average 138 123
LOWER GREEN RIVER
HAMS FORK 7840 15.3 9.9 155 14.8 14.0 106
HEWINTA 9500 12.0 10.6 113 14.8 13.6 109
HICKERSON PARK 9150 10.3 6.8 151 10.7 10.0 107
HOLE-IN-ROCK 9150 7.9 6.4 123 11.1 10.0 111
INDIAN CREEK 9425 39.6 29.5 134 32.1 27.0 119
KELLEY R.S. 8180 24.5 17.4 141 26.2 19.6 134
STEEL CREEK PARK 10100 16.9 17.1 99 16.4 13.4 122
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Basin wide percent of average 129 117
UPPER BEAR RIVER
BUG LAKE 7950 33.8 20.8 162 29.5 20.1 147
HAYDEN FORK 9400 18.1 14.5 125 25.9 19.8 131
KELLEY R.S. 8180 24.5 17.4 141 26.2 19.6 134
LILY LAKE 9050 17.7 13.2 134 20.2 15.3 132
MONTE CRISTO 8960 39.8 29.7 134 33.5 26.5 126
SALT RIVER SUMMIT 7600 21.7 14.3 152 23.8 17.6 135
TRIAL LAKE 9960 34.6 25.4 136 35.0 24.7 142
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Basin wide percent of average 141 135
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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.