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 23 , 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 28.7 13.3 216 37.6 24.6 153
COTTONWOOD CREEK 7600 30.6 21.7 141 35.6 27.5 129
GRANITE CREEK 6770 26.8 15.4 174 34.4 26.1 132
GRASSY LAKE 7265 47.6 35.9 133 58.1 40.9 142
GROS VENTRE SUMMIT 8775 23.1 15.0 154 22.3 17.6 127
LEWIS LAKE DIVIDE 7860 52.6 35.6 148 60.4 41.6 145
PHILLIPS BENCH 8200 40.4 30.2 134 48.9 32.8 149
SALT RIVER SUMMIT 7600 20.6 12.3 167 25.2 18.7 135
SNAKE RIVER STATION 6920 25.3 17.5 145 38.8 28.7 135
SPRING CREEK DIVIDE 9000 38.8 29.5 132 34.6 30.1 115
THUMB DIVIDE 7980 31.4 16.2 194 35.2 23.0 153
TOGWOTEE PASS 9580 36.3 27.7 131 36.5 31.1 117
TWO OCEAN PLATEAU 9360 48.4 27.1 179 -M 33.8 *
WILLOW CREEK 8450 41.0 31.8 129 46.9 35.3 133
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Basin wide percent of average 149 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.8 25.8 139 32.2 20.4 158
BLACK BEAR 7950 -M 40.0 * -M 45.1 *
CANYON 7940 22.8 12.2 187 -M 15.8 *
FISHER CREEK 9100 58.7 38.3 153 -M 40.8 *
MADISON PLATEAU 7750 45.0 24.7 182 44.3 29.0 153
NORTHEAST ENTRANCE 7350 10.3 7.5 137 21.2 13.4 158
PARKER PEAK 9400 34.3 23.4 147 -M 17.5 *
SYLVAN LAKE 8420 31.9 23.9 133 34.9 21.5 162
THUMB DIVIDE 7980 31.4 16.2 194 35.2 23.0 153
TWO OCEAN PLATEAU 9360 48.4 27.1 179 -M 33.8 *
WHISKEY CREEK 6800 24.4 16.7 146 33.5 24.2 138
WHITE MILL 8700 40.8 26.1 156 -M 31.6 *
WOLVERINE 7650 12.9 10.0 129 17.0 14.6 116
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Basin wide percent of average 157 149
WIND RIVER
BURROUGHS CREEK 8750 24.5 14.1 174 27.6 18.7 148
CHRISTINA LAKE 9980 20.8 17.4 120 24.8 19.2 129
COLD SPRINGS 9630 8.5 7.8 109 13.7 12.4 110
HOBBS PARK 10100 19.3 17.2 112 15.8 16.5 96
LITTLE WARM 9620 18.2 12.0 152 21.7 15.5 140
SOUTH PASS 9040 25.5 17.9 142 26.3 19.7 134
ST. LAWRENCE ALT 8620 8.5 6.2 137 12.8 11.9 108
TOGWOTEE PASS 9580 36.3 27.7 131 36.5 31.1 117
TOWNSEND CREEK 8700 10.0 10.0 100 13.9 14.7 95
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Basin wide percent of average 132 121
BIGHORN BASIN
BALD MTN. 9375 24.7 23.2 106 20.7 19.9 104
BEAR TRAP MEADOW 7900 6.2 5.6 111 11.2 10.0 112
BLACKWATER 9780 41.0 25.2 163 31.5 19.9 158
BONE SPRINGS DIV 9350 20.6 18.2 113 19.5 17.3 113
EVENING STAR 9200 43.5 30.0 145 42.8 25.0 171
GRAVE SPRINGS 8550 12.9 -M * 13.0 11.7 111
KIRWIN 9550 16.3 11.4 143 17.7 12.6 140
LOST CREEK 8080 18.8 15.5 121 18.0 14.1 128
MARQUETTE 8760 13.0 8.7 149 13.7 12.4 110
MIDDLE POWDER 7760 18.6 14.2 131 16.7 14.0 119
OWL CREEK 8975 6.6 4.1 161 7.3 7.6 96
POWDER RIVER PASS 9480 -M 11.1 * 15.5 13.8 112
SHELL CREEK 9580 19.8 16.6 119 16.9 15.2 111
SYLVAN LAKE 8420 31.9 23.9 133 34.9 21.5 162
SYLVAN ROAD 8120 18.6 9.4 198 28.6 18.0 159
TIMBER CREEK 7950 6.5 6.3 103 9.2 9.2 100
YOUNTS PEAK 8350 24.6 18.3 134 -M 18.6 *
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Basin wide percent of average 135 131
SHOSHONE RIVER
BLACKWATER 9780 41.0 25.2 163 31.5 19.9 158
EVENING STAR 9200 43.5 30.0 145 42.8 25.0 171
KIRWIN 9550 16.3 11.4 143 17.7 12.6 140
MARQUETTE 8760 13.0 8.7 149 13.7 12.4 110
SYLVAN LAKE 8420 31.9 23.9 133 34.9 21.5 162
SYLVAN ROAD 8120 18.6 9.4 198 28.6 18.0 159
YOUNTS PEAK 8350 24.6 18.3 134 -M 18.6 *
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Basin wide percent of average 149 155
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.2 5.6 111 11.2 10.0 112
BONE SPRINGS DIV 9350 20.6 18.2 113 19.5 17.3 113
BURGESS JUNCTION 7880 16.2 13.2 123 15.8 13.6 116
CLOUD PEAK RESERVOIR 9860 20.0 17.2 116 17.7 16.1 110
DOME LAKE 8880 15.3 14.9 103 16.9 15.5 109
GRAVE SPRINGS 8550 12.9 -M * 13.0 11.7 111
HANSEN SAWMILL 8760 5.6 7.2 78 9.8 9.7 101
LOST CREEK 8080 18.8 15.5 121 18.0 14.1 128
MIDDLE POWDER 7760 18.6 14.2 131 16.7 14.0 119
POWDER RIVER PASS 9480 -M 11.1 * 15.5 13.8 112
SUCKER CREEK 8880 17.6 13.6 129 18.3 15.6 117
TIE CREEK 6870 7.0 -M * 14.9 13.1 114
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Basin wide percent of average 116 114
BELLE FOURCHE
BLIND PARK 6890 8.6 10.6 81 17.8 12.8 139
NORTH RAPID CREEK 6130 10.6 -M * 16.3 -M *
WARREN PEAK 6520 20.3 10.6 192 -M 9.7 *
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Basin wide percent of average 136 139*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.7 23.2 124 34.9 27.1 129
DIVIDE PEAK 8800 27.5 20.6 133 27.2 26.1 104
ELK RIVER 8700 27.8 18.3 152 28.2 21.3 132
JOE WRIGHT 10120 31.1 24.4 127 33.5 28.9 116
NORTH FRENCH CREEK 10100 37.5 28.8 130 32.0 26.8 119
OLD BATTLE 10000 44.1 37.0 119 41.6 34.2 122
SOUTH BRUSH CREEK 8400 12.2 11.8 103 19.3 19.5 99
TOWER 10500 58.6 50.1 117 53.7 41.3 130
WEBBER SPRINGS 9200 32.2 27.3 118 38.9 29.2 133
WILLOW CREEK PASS 9540 22.6 13.5 167 18.3 14.7 124
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Basin wide percent of average 126 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 39.4 28.9 136 31.3 22.6 138
CASPER MTN. 7900 23.6 18.4 128 23.1 17.5 132
CHRISTINA LAKE 9980 20.8 17.4 120 24.8 19.2 129
DEADMAN HILL 10220 19.8 18.5 107 21.3 19.9 107
LAPRELE CREEK 8320 14.4 8.2 176 16.3 13.9 117
RENO HILL 8400 24.7 14.5 170 23.2 21.5 108
ROACH 9700 25.8 18.1 143 25.0 24.5 102
SAND LAKE 10080 41.5 36.5 114 32.7 23.6 139
SOUTH PASS 9040 25.5 17.9 142 26.3 19.7 134
WINDY PEAK 7840 8.9 8.6 103 13.1 11.5 114
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Basin wide percent of average 131 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.8 7.9 124 30.3 17.6 172
DIVIDE PEAK 8800 27.5 20.6 133 27.2 26.1 104
OLD BATTLE 10000 44.1 37.0 119 41.6 34.2 122
SANDSTONE RS 8150 15.4 12.6 122 23.4 21.8 107
WHISKEY PARK 8950 40.8 30.2 135 36.6 32.5 113
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Basin wide percent of average 127 120
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.1 14.7 130 18.2 18.0 101
BLIND BULL SUM 8650 42.6 26.9 158 34.8 26.3 132
EAST RIM DIVIDE 7930 17.0 14.9 114 18.1 16.8 108
ELKHART PARK G.S. 9400 18.8 14.5 130 19.4 17.7 110
GROS VENTRE SUMMIT 8775 23.1 15.0 154 22.3 17.6 127
KENDALL R.S. 7740 20.9 11.8 177 24.5 17.1 143
LOOMIS PARK 8240 -M 16.0 * 28.5 20.8 137
NEW FORK LAKE 8340 13.6 9.9 137 14.0 16.0 88
SNIDER BASIN 8250 21.1 14.2 149 20.5 16.7 123
SPRING CREEK DIVIDE 9000 38.8 29.5 132 34.6 30.1 115
TRIPLE PEAK 8500 33.9 25.9 131 40.8 34.1 120
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Basin wide percent of average 140 119
LOWER GREEN RIVER
HAMS FORK 7840 12.7 5.7 223 16.1 14.8 109
HEWINTA 9500 9.7 7.2 135 15.8 15.4 103
HICKERSON PARK 9150 11.5 4.8 240 11.6 11.6 100
HOLE-IN-ROCK 9150 9.3 4.2 221 12.1 11.6 104
INDIAN CREEK 9425 40.8 29.6 138 33.4 28.5 117
KELLEY R.S. 8180 22.7 16.3 139 31.8 20.7 154
STEEL CREEK PARK 10100 18.2 18.4 99 18.0 15.2 118
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Basin wide percent of average 145 118
UPPER BEAR RIVER
BUG LAKE 7950 31.8 18.0 177 30.9 21.8 142
HAYDEN FORK 9400 15.1 8.7 174 27.0 22.0 123
KELLEY R.S. 8180 22.7 16.3 139 31.8 20.7 154
LILY LAKE 9050 16.8 10.8 156 21.1 17.1 123
MONTE CRISTO 8960 37.8 27.8 136 34.9 29.1 120
SALT RIVER SUMMIT 7600 20.6 12.3 167 25.2 18.7 135
TRIAL LAKE 9960 35.6 25.0 142 36.0 27.2 132
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Basin wide percent of average 152 132
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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.