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 SATURDAY: APRIL 5 , 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 29.7 17.3 172 35.1 23.1 152
COTTONWOOD CREEK 7600 31.3 24.2 129 33.0 26.0 127
GRANITE CREEK 6770 29.2 18.5 158 33.2 24.4 136
GRASSY LAKE 7265 47.1 36.7 128 53.1 38.6 138
GROS VENTRE SUMMIT 8775 23.2 15.9 146 21.8 16.5 132
LEWIS LAKE DIVIDE 7860 52.2 36.0 145 45.8 39.2 117
PHILLIPS BENCH 8200 43.5 29.8 146 46.2 31.0 149
SALT RIVER SUMMIT 7600 21.8 14.3 152 23.7 17.6 135
SNAKE RIVER STATION 6920 28.3 18.7 151 36.8 27.1 136
SPRING CREEK DIVIDE 9000 36.1 28.6 126 32.9 28.5 115
THUMB DIVIDE 7980 32.3 17.3 187 33.6 21.6 156
TOGWOTEE PASS 9580 35.2 25.7 137 34.2 29.4 116
TWO OCEAN PLATEAU 9360 45.6 26.7 171 -M 31.8 *
WILLOW CREEK 8450 40.2 30.8 131 43.7 33.3 131
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Basin wide percent of average 146 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.7 24.3 147 30.6 18.6 165
BLACK BEAR 7950 -M 39.0 * -M 42.0 *
CANYON 7940 23.3 13.2 177 26.4 14.7 180
FISHER CREEK 9100 56.0 36.6 153 -M 37.8 *
MADISON PLATEAU 7750 42.3 25.0 169 42.3 27.1 156
NORTHEAST ENTRANCE 7350 12.1 9.1 133 19.5 12.2 160
PARKER PEAK 9400 32.1 22.2 145 -M 16.0 *
SYLVAN LAKE 8420 32.8 22.8 144 33.4 19.7 170
THUMB DIVIDE 7980 32.3 17.3 187 33.6 21.6 156
TWO OCEAN PLATEAU 9360 45.6 26.7 171 -M 31.8 *
WHISKEY CREEK 6800 25.7 17.7 145 32.0 22.6 142
WHITE MILL 8700 38.3 25.3 151 -M 29.2 *
WOLVERINE 7650 13.9 11.7 119 15.6 13.1 119
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Basin wide percent of average 155 156
WIND RIVER
BURROUGHS CREEK 8750 24.1 15.1 160 26.1 17.1 153
CHRISTINA LAKE 9980 20.6 15.8 130 23.5 17.2 137
COLD SPRINGS 9630 10.5 8.5 124 12.8 10.9 117
HOBBS PARK 10100 18.4 15.5 119 14.6 14.6 100
LITTLE WARM 9620 18.1 12.1 150 20.7 13.7 151
SOUTH PASS 9040 25.2 16.7 151 25.7 17.6 146
ST. LAWRENCE ALT 8620 9.1 7.5 121 11.6 10.5 110
TOGWOTEE PASS 9580 35.2 25.7 137 34.2 29.4 116
TOWNSEND CREEK 8700 10.8 10.0 108 13.0 12.9 101
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Basin wide percent of average 136 127
BIGHORN BASIN
BALD MTN. 9375 22.7 21.0 108 19.0 17.9 106
BEAR TRAP MEADOW 7900 6.8 7.1 96 9.0 8.5 106
BLACKWATER 9780 38.5 23.1 167 29.0 18.4 158
BONE SPRINGS DIV 9350 19.9 17.0 117 17.1 15.5 110
EVENING STAR 9200 41.6 27.8 150 40.4 23.1 175
GRAVE SPRINGS 8550 12.9 -M * 11.6 10.0 116
KIRWIN 9550 15.0 10.3 146 16.2 11.1 146
LOST CREEK 8080 16.5 14.1 117 16.3 12.2 134
MARQUETTE 8760 11.8 8.3 142 11.9 10.0 119
MIDDLE POWDER 7760 18.0 12.6 143 15.3 12.2 125
OWL CREEK 8975 8.4 4.6 183 6.8 6.5 105
POWDER RIVER PASS 9480 -M 11.1 * 13.8 11.9 116
SHELL CREEK 9580 18.4 15.3 120 15.2 13.5 113
SYLVAN LAKE 8420 32.8 22.8 144 33.4 19.7 170
SYLVAN ROAD 8120 21.0 12.0 175 27.4 16.5 166
TIMBER CREEK 7950 7.3 6.4 114 8.6 7.4 116
YOUNTS PEAK 8350 24.5 17.6 139 27.6 17.0 162
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Basin wide percent of average 138 138
SHOSHONE RIVER
BLACKWATER 9780 38.5 23.1 167 29.0 18.4 158
EVENING STAR 9200 41.6 27.8 150 40.4 23.1 175
KIRWIN 9550 15.0 10.3 146 16.2 11.1 146
MARQUETTE 8760 11.8 8.3 142 11.9 10.0 119
SYLVAN LAKE 8420 32.8 22.8 144 33.4 19.7 170
SYLVAN ROAD 8120 21.0 12.0 175 27.4 16.5 166
YOUNTS PEAK 8350 24.5 17.6 139 27.6 17.0 162
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Basin wide percent of average 152 161
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.8 7.1 96 9.0 8.5 106
BONE SPRINGS DIV 9350 19.9 17.0 117 17.1 15.5 110
BURGESS JUNCTION 7880 14.9 12.1 123 14.1 11.9 118
CLOUD PEAK RESERVOIR 9860 18.7 15.4 121 15.9 13.8 115
DOME LAKE 8880 14.4 14.1 102 15.3 13.6 113
GRAVE SPRINGS 8550 12.9 -M * 11.6 10.0 116
HANSEN SAWMILL 8760 7.3 7.2 101 9.0 8.2 110
LOST CREEK 8080 16.5 14.1 117 16.3 12.2 134
MIDDLE POWDER 7760 18.0 12.6 143 15.3 12.2 125
POWDER RIVER PASS 9480 -M 11.1 * 13.8 11.9 116
SUCKER CREEK 8880 15.8 12.5 126 16.3 13.6 120
TIE CREEK 6870 7.5 -M * 12.9 11.4 113
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Basin wide percent of average 118 117
BELLE FOURCHE
BLIND PARK 6890 9.6 11.2 86 15.2 10.5 145
NORTH RAPID CREEK 6130 9.8 -M * 13.3 -M *
WARREN PEAK 6520 19.1 11.2 171 -M 8.3 *
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Basin wide percent of average 128 145*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.8 24.8 116 31.6 25.0 126
DIVIDE PEAK 8800 27.3 21.4 128 25.4 23.4 109
ELK RIVER 8700 26.9 20.1 134 25.2 19.6 129
JOE WRIGHT 10120 25.8 22.7 114 29.7 25.7 116
NORTH FRENCH CREEK 10100 35.9 26.3 137 27.6 24.1 115
OLD BATTLE 10000 41.5 33.2 125 39.0 30.9 126
SOUTH BRUSH CREEK 8400 13.5 13.3 102 17.9 16.9 106
TOWER 10500 55.1 46.4 119 47.8 37.1 129
WEBBER SPRINGS 9200 32.1 28.4 113 36.9 25.9 142
WILLOW CREEK PASS 9540 20.0 12.4 161 16.2 13.0 125
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Basin wide percent of average 123 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 36.5 27.1 135 28.1 20.0 141
CASPER MTN. 7900 24.2 17.3 140 21.7 14.6 149
CHRISTINA LAKE 9980 20.6 15.8 130 23.5 17.2 137
DEADMAN HILL 10220 17.1 16.9 101 19.1 17.3 110
LAPRELE CREEK 8320 15.3 10.4 147 15.1 12.2 124
RENO HILL 8400 24.5 14.7 167 21.3 19.6 109
ROACH 9700 23.2 17.6 132 22.7 21.7 105
SAND LAKE 10080 39.1 33.8 116 30.4 20.9 145
SOUTH PASS 9040 25.2 16.7 151 25.7 17.6 146
WINDY PEAK 7840 10.9 8.9 122 11.8 9.9 119
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Basin wide percent of average 132 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.1 11.2 126 28.7 15.7 183
DIVIDE PEAK 8800 27.3 21.4 128 25.4 23.4 109
OLD BATTLE 10000 41.5 33.2 125 39.0 30.9 126
SANDSTONE RS 8150 17.9 15.1 119 22.3 19.2 116
WHISKEY PARK 8950 38.3 29.5 130 33.7 29.0 116
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Basin wide percent of average 126 126
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.9 14.9 127 20.2 16.9 120
BLIND BULL SUM 8650 43.4 30.1 144 32.7 24.9 131
EAST RIM DIVIDE 7930 17.1 14.3 120 17.4 15.7 111
ELKHART PARK G.S. 9400 18.3 14.2 129 18.6 16.6 112
GROS VENTRE SUMMIT 8775 23.2 15.9 146 21.8 16.5 132
KENDALL R.S. 7740 23.8 14.2 168 23.8 16.1 148
LOOMIS PARK 8240 -M 17.4 * 27.7 19.6 141
NEW FORK LAKE 8340 15.4 11.1 139 13.5 15.0 90
SNIDER BASIN 8250 23.8 15.1 158 19.4 15.7 124
SPRING CREEK DIVIDE 9000 36.1 28.6 126 32.9 28.5 115
TRIPLE PEAK 8500 36.6 26.2 140 37.9 32.1 118
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Basin wide percent of average 139 122
LOWER GREEN RIVER
HAMS FORK 7840 15.3 10.4 147 14.8 13.9 106
HEWINTA 9500 11.9 10.8 110 14.6 13.5 108
HICKERSON PARK 9150 10.3 6.8 151 10.5 9.9 106
HOLE-IN-ROCK 9150 7.5 6.4 117 10.8 9.9 109
INDIAN CREEK 9425 40.2 29.4 137 31.6 26.9 117
KELLEY R.S. 8180 24.3 17.4 140 26.3 19.5 135
STEEL CREEK PARK 10100 16.6 17.0 98 16.2 13.2 123
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Basin wide percent of average 128 117
UPPER BEAR RIVER
BUG LAKE 7950 33.9 20.9 162 29.5 20.0 148
HAYDEN FORK 9400 17.7 14.9 119 25.7 19.6 131
KELLEY R.S. 8180 24.3 17.4 140 26.3 19.5 135
LILY LAKE 9050 17.1 13.3 129 19.8 15.2 130
MONTE CRISTO 8960 38.7 29.7 130 33.6 26.3 128
SALT RIVER SUMMIT 7600 21.8 14.3 152 23.7 17.6 135
TRIAL LAKE 9960 34.5 25.3 136 34.8 24.6 141
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Basin wide percent of average 138 135
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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.