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 WEDNESDAY: APRIL 16 , 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 15.7 194 36.0 24.0 150
COTTONWOOD CREEK 7600 31.6 23.1 137 34.0 27.0 126
GRANITE CREEK 6770 28.6 17.5 163 33.5 25.4 132
GRASSY LAKE 7265 48.9 37.6 130 56.2 40.0 141
GROS VENTRE SUMMIT 8775 23.3 15.9 147 21.9 17.2 127
LEWIS LAKE DIVIDE 7860 52.9 36.6 145 45.9 40.7 113
PHILLIPS BENCH 8200 44.3 30.8 144 47.0 32.1 146
SALT RIVER SUMMIT 7600 21.8 13.6 160 24.6 18.3 134
SNAKE RIVER STATION 6920 28.3 18.5 153 37.6 28.1 134
SPRING CREEK DIVIDE 9000 38.0 29.4 129 33.7 29.5 114
THUMB DIVIDE 7980 32.1 17.3 186 34.0 22.5 151
TOGWOTEE PASS 9580 35.8 27.1 132 35.0 30.5 115
TWO OCEAN PLATEAU 9360 47.1 26.7 176 -M 33.1 *
WILLOW CREEK 8450 40.6 31.7 128 45.6 34.6 132
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Basin wide percent of average 147 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 37.0 25.5 145 31.9 19.7 162
BLACK BEAR 7950 -M 40.2 * -M 43.9 *
CANYON 7940 23.4 13.3 176 26.9 15.4 175
FISHER CREEK 9100 57.0 38.0 150 -M 39.7 *
MADISON PLATEAU 7750 42.8 25.5 168 43.0 28.3 152
NORTHEAST ENTRANCE 7350 12.8 8.8 145 19.8 12.9 153
PARKER PEAK 9400 33.1 23.2 143 -M 17.0 *
SYLVAN LAKE 8420 32.0 23.9 134 33.8 20.8 162
THUMB DIVIDE 7980 32.1 17.3 186 34.0 22.5 151
TWO OCEAN PLATEAU 9360 47.1 26.7 176 -M 33.1 *
WHISKEY CREEK 6800 25.1 18.0 139 32.2 23.6 136
WHITE MILL 8700 39.5 25.8 153 -M 30.7 *
WOLVERINE 7650 13.2 11.6 114 16.2 14.0 116
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Basin wide percent of average 153 151
WIND RIVER
BURROUGHS CREEK 8750 24.6 15.2 162 26.9 18.1 149
CHRISTINA LAKE 9980 20.7 16.8 123 24.0 18.5 130
COLD SPRINGS 9630 10.5 8.6 122 13.5 11.9 113
HOBBS PARK 10100 19.1 16.6 115 15.5 15.8 98
LITTLE WARM 9620 18.6 13.3 140 21.3 14.8 144
SOUTH PASS 9040 26.6 17.6 151 26.2 18.9 139
ST. LAWRENCE ALT 8620 9.9 7.0 141 12.8 11.4 112
TOGWOTEE PASS 9580 35.8 27.1 132 35.0 30.5 115
TOWNSEND CREEK 8700 11.1 10.3 108 13.9 14.0 99
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Basin wide percent of average 134 123
BIGHORN BASIN
BALD MTN. 9375 24.0 22.4 107 20.2 19.1 106
BEAR TRAP MEADOW 7900 7.8 6.7 116 10.6 9.4 113
BLACKWATER 9780 40.2 24.8 162 31.1 19.4 160
BONE SPRINGS DIV 9350 20.6 18.1 114 18.6 16.6 112
EVENING STAR 9200 42.6 29.3 145 41.5 24.3 171
GRAVE SPRINGS 8550 13.5 -M * 12.6 11.0 115
KIRWIN 9550 15.7 11.1 141 17.1 12.1 141
LOST CREEK 8080 18.7 15.2 123 17.6 13.4 131
MARQUETTE 8760 13.1 8.7 151 13.5 11.5 117
MIDDLE POWDER 7760 19.1 13.7 139 16.3 13.3 123
OWL CREEK 8975 9.2 4.6 200 7.3 7.2 101
POWDER RIVER PASS 9480 -M 11.5 * 15.0 13.1 115
SHELL CREEK 9580 19.7 16.2 122 16.6 14.5 114
SYLVAN LAKE 8420 32.0 23.9 134 33.8 20.8 162
SYLVAN ROAD 8120 20.0 10.6 189 27.7 17.4 159
TIMBER CREEK 7950 7.9 6.6 120 9.1 8.5 107
YOUNTS PEAK 8350 25.1 18.3 137 -M 18.0 *
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Basin wide percent of average 137 133
SHOSHONE RIVER
BLACKWATER 9780 40.2 24.8 162 31.1 19.4 160
EVENING STAR 9200 42.6 29.3 145 41.5 24.3 171
KIRWIN 9550 15.7 11.1 141 17.1 12.1 141
MARQUETTE 8760 13.1 8.7 151 13.5 11.5 117
SYLVAN LAKE 8420 32.0 23.9 134 33.8 20.8 162
SYLVAN ROAD 8120 20.0 10.6 189 27.7 17.4 159
YOUNTS PEAK 8350 25.1 18.3 137 -M 18.0 *
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Basin wide percent of average 149 156
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.8 6.7 116 10.6 9.4 113
BONE SPRINGS DIV 9350 20.6 18.1 114 18.6 16.6 112
BURGESS JUNCTION 7880 16.0 12.9 124 15.7 13.0 121
CLOUD PEAK RESERVOIR 9860 19.9 16.9 118 17.1 15.2 113
DOME LAKE 8880 15.1 14.8 102 16.6 14.8 112
GRAVE SPRINGS 8550 13.5 -M * 12.6 11.0 115
HANSEN SAWMILL 8760 -M 7.6 * 9.7 9.1 107
LOST CREEK 8080 18.7 15.2 123 17.6 13.4 131
MIDDLE POWDER 7760 19.1 13.7 139 16.3 13.3 123
POWDER RIVER PASS 9480 -M 11.5 * 15.0 13.1 115
SUCKER CREEK 8880 17.5 13.3 132 18.1 14.8 122
TIE CREEK 6870 7.6 -M * 14.5 12.4 117
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Basin wide percent of average 121 117
BELLE FOURCHE
BLIND PARK 6890 11.1 11.5 97 17.0 11.9 143
NORTH RAPID CREEK 6130 12.5 -M * 15.1 -M *
WARREN PEAK 6520 21.3 11.5 185 -M 9.2 *
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Basin wide percent of average 141 143*
UPPER N. PLATTE RIVER
COLUMBINE 9400 30.7 24.3 126 34.0 26.3 129
DIVIDE PEAK 8800 29.4 21.6 136 27.3 25.1 109
ELK RIVER 8700 30.2 20.1 150 27.6 20.7 133
JOE WRIGHT 10120 29.1 24.2 120 32.5 27.7 117
NORTH FRENCH CREEK 10100 37.4 28.3 132 31.3 25.8 121
OLD BATTLE 10000 44.1 36.0 123 41.1 33.0 125
SOUTH BRUSH CREEK 8400 13.3 12.9 103 19.2 18.5 104
TOWER 10500 58.2 49.1 119 48.4 39.7 122
WEBBER SPRINGS 9200 33.2 28.4 117 38.6 27.9 138
WILLOW CREEK PASS 9540 22.3 13.5 165 17.8 14.0 127
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Basin wide percent of average 127 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 38.3 29.0 132 29.2 21.6 135
CASPER MTN. 7900 25.3 18.9 134 22.9 16.4 140
CHRISTINA LAKE 9980 20.7 16.8 123 24.0 18.5 130
DEADMAN HILL 10220 18.7 17.9 104 20.7 18.9 110
LAPRELE CREEK 8320 14.9 9.8 152 16.2 13.3 122
RENO HILL 8400 26.2 15.4 170 23.1 20.8 111
ROACH 9700 24.7 18.1 136 24.3 23.5 103
SAND LAKE 10080 41.7 35.8 116 31.8 22.6 141
SOUTH PASS 9040 26.6 17.6 151 26.2 18.9 139
WINDY PEAK 7840 10.9 9.2 118 13.2 10.9 121
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Basin wide percent of average 132 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 17.2 10.5 164 29.9 16.9 177
DIVIDE PEAK 8800 29.4 21.6 136 27.3 25.1 109
OLD BATTLE 10000 44.1 36.0 123 41.1 33.0 125
SANDSTONE RS 8150 19.8 15.0 132 23.3 20.8 112
WHISKEY PARK 8950 41.7 30.6 136 34.0 31.1 109
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Basin wide percent of average 134 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.5 15.3 127 17.8 17.6 101
BLIND BULL SUM 8650 44.4 30.5 146 34.0 25.8 132
EAST RIM DIVIDE 7930 17.5 15.0 117 17.8 16.4 109
ELKHART PARK G.S. 9400 19.1 14.9 128 19.4 17.3 112
GROS VENTRE SUMMIT 8775 23.3 15.9 147 21.9 17.2 127
KENDALL R.S. 7740 23.7 12.9 184 24.1 16.8 143
LOOMIS PARK 8240 -M 16.8 * 28.0 20.4 137
NEW FORK LAKE 8340 15.7 10.6 148 13.8 15.6 88
SNIDER BASIN 8250 23.4 15.3 153 19.9 16.4 121
SPRING CREEK DIVIDE 9000 38.0 29.4 129 33.7 29.5 114
TRIPLE PEAK 8500 36.4 26.8 136 38.8 33.4 116
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Basin wide percent of average 140 119
LOWER GREEN RIVER
HAMS FORK 7840 15.9 5.7 279 15.4 14.5 106
HEWINTA 9500 13.9 8.8 158 15.2 14.7 103
HICKERSON PARK 9150 10.5 6.4 164 11.3 10.9 104
HOLE-IN-ROCK 9150 10.5 6.0 175 11.7 10.9 107
INDIAN CREEK 9425 41.5 30.3 137 32.7 27.9 117
KELLEY R.S. 8180 25.2 17.4 145 26.6 20.3 131
STEEL CREEK PARK 10100 17.5 18.0 97 17.1 14.5 118
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Basin wide percent of average 146 114
UPPER BEAR RIVER
BUG LAKE 7950 34.4 19.8 174 30.5 21.1 145
HAYDEN FORK 9400 18.5 10.5 176 26.2 21.1 124
KELLEY R.S. 8180 25.2 17.4 145 26.6 20.3 131
LILY LAKE 9050 20.3 12.6 161 20.5 16.4 125
MONTE CRISTO 8960 42.6 29.1 146 34.4 28.0 123
SALT RIVER SUMMIT 7600 21.8 13.6 160 24.6 18.3 134
TRIAL LAKE 9960 36.6 25.9 141 35.3 26.2 135
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Basin wide percent of average 155 131
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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.