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 TUESDAY: APRIL 1 , 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 17.8 167 34.8 22.8 153
COTTONWOOD CREEK 7600 31.3 24.5 128 32.9 25.7 128
GRANITE CREEK 6770 29.1 18.8 155 33.1 24.0 138
GRASSY LAKE 7265 46.1 36.3 127 53.1 38.1 139
GROS VENTRE SUMMIT 8775 22.7 15.8 144 21.5 16.3 132
LEWIS LAKE DIVIDE 7860 52.1 35.7 146 45.8 38.7 118
PHILLIPS BENCH 8200 43.0 29.4 146 45.8 30.6 150
SALT RIVER SUMMIT 7600 21.6 14.5 149 23.6 17.3 136
SNAKE RIVER STATION 6920 28.2 18.8 150 36.4 26.7 136
SPRING CREEK DIVIDE 9000 35.6 28.3 126 32.8 28.1 117
THUMB DIVIDE 7980 31.9 17.2 185 -M 21.3 *
TOGWOTEE PASS 9580 34.8 25.2 138 -M 29.0 *
TWO OCEAN PLATEAU 9360 45.2 26.8 169 -M 31.4 *
WILLOW CREEK 8450 40.8 30.5 134 41.8 32.9 127
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Basin wide percent of average 145 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.4 23.8 149 30.4 18.2 167
BLACK BEAR 7950 -M 38.5 * -M 41.3 *
CANYON 7940 23.1 13.1 176 26.3 14.4 183
FISHER CREEK 9100 56.0 36.1 155 -M 37.1 *
MADISON PLATEAU 7750 42.0 24.8 169 42.2 26.7 158
NORTHEAST ENTRANCE 7350 12.0 9.2 130 19.4 11.9 163
PARKER PEAK 9400 31.6 21.8 145 -M 15.7 *
SYLVAN LAKE 8420 32.6 22.3 146 33.1 19.3 172
THUMB DIVIDE 7980 31.9 17.2 185 -M 21.3 *
TWO OCEAN PLATEAU 9360 45.2 26.8 169 -M 31.4 *
WHISKEY CREEK 6800 25.6 17.5 146 31.7 22.2 143
WHITE MILL 8700 38.4 25.1 153 -M 28.7 *
WOLVERINE 7650 13.9 11.7 119 15.3 12.8 120
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Basin wide percent of average 155 158
WIND RIVER
BURROUGHS CREEK 8750 23.8 15.0 159 25.8 16.7 154
CHRISTINA LAKE 9980 19.5 15.4 127 23.1 16.8 138
COLD SPRINGS 9630 9.8 8.4 117 12.0 10.6 113
HOBBS PARK 10100 17.1 15.1 113 13.3 14.2 94
LITTLE WARM 9620 17.9 11.6 154 20.1 13.3 151
SOUTH PASS 9040 24.9 16.4 152 24.7 17.1 144
ST. LAWRENCE ALT 8620 8.6 7.6 113 10.6 10.2 104
TOGWOTEE PASS 9580 34.8 25.2 138 -M 29.0 *
TOWNSEND CREEK 8700 9.7 9.9 98 11.8 12.5 94
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Basin wide percent of average 133 127
BIGHORN BASIN
BALD MTN. 9375 22.3 20.5 109 18.5 17.4 106
BEAR TRAP MEADOW 7900 6.9 7.2 96 8.7 8.2 106
BLACKWATER 9780 37.9 22.4 169 28.9 18.1 160
BONE SPRINGS DIV 9350 19.1 16.5 116 16.5 15.1 109
EVENING STAR 9200 41.0 27.2 151 39.8 22.7 175
GRAVE SPRINGS 8550 12.4 -M * 11.3 9.6 118
KIRWIN 9550 14.6 10.0 146 15.8 10.8 146
LOST CREEK 8080 15.8 13.7 115 15.8 11.8 134
MARQUETTE 8760 11.1 8.1 137 11.6 9.5 122
MIDDLE POWDER 7760 17.3 12.2 142 15.0 11.8 127
OWL CREEK 8975 7.9 4.6 172 6.6 6.2 106
POWDER RIVER PASS 9480 13.2 10.9 121 13.4 11.5 117
SHELL CREEK 9580 17.9 15.0 119 14.7 13.1 112
SYLVAN LAKE 8420 32.6 22.3 146 33.1 19.3 172
SYLVAN ROAD 8120 20.3 12.5 162 26.9 16.2 166
TIMBER CREEK 7950 7.0 6.3 111 8.1 7.0 116
YOUNTS PEAK 8350 24.2 17.3 140 -M 16.7 *
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Basin wide percent of average 136 137
SHOSHONE RIVER
BLACKWATER 9780 37.9 22.4 169 28.9 18.1 160
EVENING STAR 9200 41.0 27.2 151 39.8 22.7 175
KIRWIN 9550 14.6 10.0 146 15.8 10.8 146
MARQUETTE 8760 11.1 8.1 137 11.6 9.5 122
SYLVAN LAKE 8420 32.6 22.3 146 33.1 19.3 172
SYLVAN ROAD 8120 20.3 12.5 162 26.9 16.2 166
YOUNTS PEAK 8350 24.2 17.3 140 -M 16.7 *
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Basin wide percent of average 152 162
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.9 7.2 96 8.7 8.2 106
BONE SPRINGS DIV 9350 19.1 16.5 116 16.5 15.1 109
BURGESS JUNCTION 7880 14.0 11.8 119 13.6 11.5 118
CLOUD PEAK RESERVOIR 9860 17.5 14.9 117 15.2 13.3 114
DOME LAKE 8880 13.4 13.8 97 14.4 13.2 109
GRAVE SPRINGS 8550 12.4 -M * 11.3 9.6 118
HANSEN SAWMILL 8760 6.7 7.1 94 8.4 7.9 106
LOST CREEK 8080 15.8 13.7 115 15.8 11.8 134
MIDDLE POWDER 7760 17.3 12.2 142 15.0 11.8 127
POWDER RIVER PASS 9480 13.2 10.9 121 13.4 11.5 117
SUCKER CREEK 8880 14.7 12.2 120 15.5 13.1 118
TIE CREEK 6870 7.4 -M * 12.4 11.0 113
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Basin wide percent of average 115 116
BELLE FOURCHE
BLIND PARK 6890 9.5 11.1 86 14.7 10.0 147
NORTH RAPID CREEK 6130 9.4 -M * 13.0 -M *
WARREN PEAK 6520 18.1 11.1 163 -M 8.0 *
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Basin wide percent of average 124 147*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.3 24.9 114 30.9 24.5 126
DIVIDE PEAK 8800 25.6 21.3 120 24.2 22.8 106
ELK RIVER 8700 26.2 20.0 131 24.4 19.2 127
JOE WRIGHT 10120 24.5 22.1 111 28.7 25.0 115
NORTH FRENCH CREEK 10100 35.3 25.6 138 27.6 23.5 117
OLD BATTLE 10000 39.7 32.2 123 36.8 30.2 122
SOUTH BRUSH CREEK 8400 13.6 13.4 101 17.4 16.3 107
TOWER 10500 53.9 45.4 119 47.1 36.2 130
WEBBER SPRINGS 9200 31.0 28.3 110 35.6 25.2 141
WILLOW CREEK PASS 9540 17.9 12.0 149 14.7 12.6 117
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Basin wide percent of average 121 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.2 26.4 133 27.1 19.4 140
CASPER MTN. 7900 21.2 16.6 128 20.2 14.0 144
CHRISTINA LAKE 9980 19.5 15.4 127 23.1 16.8 138
DEADMAN HILL 10220 16.2 16.6 98 18.1 16.7 108
LAPRELE CREEK 8320 13.8 10.6 130 14.1 11.8 119
RENO HILL 8400 22.4 14.4 156 19.5 19.2 102
ROACH 9700 22.5 17.4 129 21.3 21.1 101
SAND LAKE 10080 37.4 33.1 113 29.1 20.3 143
SOUTH PASS 9040 24.9 16.4 152 24.7 17.1 144
WINDY PEAK 7840 10.3 8.8 117 11.3 9.5 119
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Basin wide percent of average 127 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.8 11.3 122 28.0 15.3 183
DIVIDE PEAK 8800 25.6 21.3 120 24.2 22.8 106
OLD BATTLE 10000 39.7 32.2 123 36.8 30.2 122
SANDSTONE RS 8150 17.8 15.0 119 21.9 18.6 118
WHISKEY PARK 8950 37.2 29.0 128 32.8 28.2 116
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Basin wide percent of average 123 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.1 14.7 130 20.8 16.6 125
BLIND BULL SUM 8650 42.5 29.8 143 32.7 24.6 133
EAST RIM DIVIDE 7930 16.9 14.0 121 17.3 15.5 112
ELKHART PARK G.S. 9400 18.1 13.9 130 18.5 16.3 113
GROS VENTRE SUMMIT 8775 22.7 15.8 144 21.5 16.3 132
KENDALL R.S. 7740 23.7 14.7 161 23.9 15.9 150
LOOMIS PARK 8240 -M 17.6 * 27.5 19.3 142
NEW FORK LAKE 8340 15.6 11.3 138 13.4 14.8 91
SNIDER BASIN 8250 23.5 14.9 158 19.4 15.5 125
SPRING CREEK DIVIDE 9000 35.6 28.3 126 32.8 28.1 117
TRIPLE PEAK 8500 36.9 25.9 142 37.7 31.7 119
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Basin wide percent of average 139 124
LOWER GREEN RIVER
HAMS FORK 7840 15.8 12.3 128 14.7 13.7 107
HEWINTA 9500 11.0 11.5 96 14.2 13.1 108
HICKERSON PARK 9150 8.5 6.9 123 9.3 9.5 98
HOLE-IN-ROCK 9150 6.2 6.5 95 9.8 9.5 103
INDIAN CREEK 9425 39.6 29.0 137 31.7 26.6 119
KELLEY R.S. 8180 24.1 17.3 139 26.1 19.2 136
STEEL CREEK PARK 10100 16.2 16.6 98 15.9 12.8 124
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Basin wide percent of average 121 117
UPPER BEAR RIVER
BUG LAKE 7950 33.4 21.3 157 29.5 19.6 151
HAYDEN FORK 9400 17.2 16.5 104 25.6 19.1 134
KELLEY R.S. 8180 24.1 17.3 139 26.1 19.2 136
LILY LAKE 9050 17.0 13.4 127 19.6 14.8 132
MONTE CRISTO 8960 40.8 29.9 136 33.3 25.7 130
SALT RIVER SUMMIT 7600 21.6 14.5 149 23.6 17.3 136
TRIAL LAKE 9960 34.2 25.0 137 34.7 24.0 145
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Basin wide percent of average 137 138
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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.