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 FRIDAY: MAY 9 , 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 21.6 7.3 296 39.0 25.9 151
COTTONWOOD CREEK 7600 29.9 16.6 180 39.6 28.9 137
GRANITE CREEK 6770 22.1 9.7 228 35.7 27.6 129
GRASSY LAKE 7265 46.0 30.1 153 61.3 43.0 143
GROS VENTRE SUMMIT 8775 21.2 11.7 181 23.1 18.6 124
LEWIS LAKE DIVIDE 7860 53.7 31.7 169 63.7 43.8 145
PHILLIPS BENCH 8200 42.2 27.1 156 51.0 34.5 148
SALT RIVER SUMMIT 7600 15.7 4.6 341 26.7 19.8 135
SNAKE RIVER STATION 6920 17.2 13.6 126 40.9 30.2 135
SPRING CREEK DIVIDE 9000 35.9 27.5 131 37.3 31.6 118
THUMB DIVIDE 7980 25.4 12.9 197 37.1 24.2 153
TOGWOTEE PASS 9580 38.2 27.0 141 39.8 32.8 121
TWO OCEAN PLATEAU 9360 47.7 26.9 177 -M 35.7 *
WILLOW CREEK 8450 43.3 29.6 146 53.5 37.2 144
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Basin wide percent of average 167 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.4 * 35.3 22.2 159
BLACK BEAR 7950 -M 38.2 * -M 47.6 *
CANYON 7940 19.2 8.4 229 29.6 17.0 174
FISHER CREEK 9100 60.8 38.0 160 -M 43.4 *
MADISON PLATEAU 7750 38.9 21.0 185 46.1 30.8 150
NORTHEAST ENTRANCE 7350 5.8 4.0 145 23.4 14.6 160
PARKER PEAK 9400 38.7 23.1 168 -M 19.1 *
SYLVAN LAKE 8420 30.7 22.0 140 37.2 23.3 160
THUMB DIVIDE 7980 25.4 12.9 197 37.1 24.2 153
TWO OCEAN PLATEAU 9360 47.7 26.9 177 -M 35.7 *
WHISKEY CREEK 6800 20.5 11.9 172 35.3 25.6 138
WHITE MILL 8700 43.1 25.5 169 -M 33.6 *
WOLVERINE 7650 9.3 5.2 179 19.1 15.9 120
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Basin wide percent of average 171 152
WIND RIVER
BURROUGHS CREEK 8750 22.0 9.5 232 28.9 20.2 143
CHRISTINA LAKE 9980 21.7 17.5 124 27.9 21.0 133
COLD SPRINGS 9630 7.4 4.5 164 16.6 13.9 119
HOBBS PARK 10100 21.7 17.4 125 19.6 18.2 108
LITTLE WARM 9620 16.9 7.5 225 24.3 17.1 142
SOUTH PASS 9040 25.7 17.2 149 30.1 21.5 140
ST. LAWRENCE ALT 8620 9.5 3.7 257 16.4 13.1 125
TOGWOTEE PASS 9580 38.2 27.0 141 39.8 32.8 121
TOWNSEND CREEK 8700 11.2 7.6 147 18.3 16.3 112
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Basin wide percent of average 156 127
BIGHORN BASIN
BALD MTN. 9375 26.4 24.3 109 22.9 22.0 104
BEAR TRAP MEADOW 7900 2.1 2.6 81 12.9 11.5 112
BLACKWATER 9780 43.1 25.2 171 34.3 21.5 160
BONE SPRINGS DIV 9350 21.7 17.4 125 21.4 19.2 111
EVENING STAR 9200 45.2 30.5 148 46.6 26.9 173
GRAVE SPRINGS 8550 11.8 -M * 14.7 13.4 110
KIRWIN 9550 16.5 10.8 153 20.2 14.0 144
LOST CREEK 8080 21.3 14.5 147 20.5 16.0 128
MARQUETTE 8760 13.7 8.0 171 16.3 14.5 112
MIDDLE POWDER 7760 17.5 14.3 122 18.8 15.7 120
OWL CREEK 8975 3.1 2.0 155 9.5 8.8 108
POWDER RIVER PASS 9480 -M 8.0 * 17.9 15.6 115
SHELL CREEK 9580 20.2 17.0 119 19.4 16.9 115
SYLVAN LAKE 8420 30.7 22.0 140 37.2 23.3 160
SYLVAN ROAD 8120 12.8 5.7 225 30.4 19.4 157
TIMBER CREEK 7950 4.5 4.0 112 11.6 11.0 105
YOUNTS PEAK 8350 24.0 16.9 142 -M 20.1 *
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Basin wide percent of average 141 131
SHOSHONE RIVER
BLACKWATER 9780 43.1 25.2 171 34.3 21.5 160
EVENING STAR 9200 45.2 30.5 148 46.6 26.9 173
KIRWIN 9550 16.5 10.8 153 20.2 14.0 144
MARQUETTE 8760 13.7 8.0 171 16.3 14.5 112
SYLVAN LAKE 8420 30.7 22.0 140 37.2 23.3 160
SYLVAN ROAD 8120 12.8 5.7 225 30.4 19.4 157
YOUNTS PEAK 8350 24.0 16.9 142 -M 20.1 *
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Basin wide percent of average 156 155
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.1 2.6 81 12.9 11.5 112
BONE SPRINGS DIV 9350 21.7 17.4 125 21.4 19.2 111
BURGESS JUNCTION 7880 15.9 12.1 131 17.9 15.3 117
CLOUD PEAK RESERVOIR 9860 22.8 16.8 136 20.9 18.2 115
DOME LAKE 8880 16.1 12.3 131 19.8 17.4 114
GRAVE SPRINGS 8550 11.8 -M * 14.7 13.4 110
HANSEN SAWMILL 8760 4.6 5.2 88 12.1 11.0 110
LOST CREEK 8080 21.3 14.5 147 20.5 16.0 128
MIDDLE POWDER 7760 17.5 14.3 122 18.8 15.7 120
POWDER RIVER PASS 9480 -M 8.0 * 17.9 15.6 115
SUCKER CREEK 8880 19.7 11.9 166 21.7 17.5 124
TIE CREEK 6870 5.7 -M * 17.9 14.6 123
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Basin wide percent of average 132 117
BELLE FOURCHE
BLIND PARK 6890 4.7 6.7 70 19.5 14.9 131
NORTH RAPID CREEK 6130 7.6 -M * 18.4 -M *
WARREN PEAK 6520 17.7 6.7 264 -M 11.1 *
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Basin wide percent of average 167 131*
UPPER N. PLATTE RIVER
COLUMBINE 9400 24.6 17.5 141 38.3 28.8 133
DIVIDE PEAK 8800 23.8 15.4 155 29.7 28.2 105
ELK RIVER 8700 20.8 11.8 176 31.0 22.7 137
JOE WRIGHT 10120 35.4 24.1 147 37.5 31.5 119
NORTH FRENCH CREEK 10100 39.1 27.9 140 36.3 29.1 125
OLD BATTLE 10000 48.4 37.5 129 46.5 36.7 127
SOUTH BRUSH CREEK 8400 6.7 7.9 85 21.7 21.3 102
TOWER 10500 31.0 50.9 61 59.7 44.8 133
WEBBER SPRINGS 9200 31.7 22.9 138 42.6 31.4 136
WILLOW CREEK PASS 9540 -M 11.9 * 20.3 16.1 126
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Basin wide percent of average 121 125
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 39.5 26.6 148 34.9 24.7 141
CASPER MTN. 7900 23.6 14.0 169 27.4 19.9 138
CHRISTINA LAKE 9980 21.7 17.5 124 27.9 21.0 133
DEADMAN HILL 10220 22.5 18.8 120 24.6 22.0 112
LAPRELE CREEK 8320 9.0 4.6 196 18.2 15.6 117
RENO HILL 8400 22.5 10.7 210 26.7 22.9 117
ROACH 9700 26.9 16.9 159 27.8 26.9 103
SAND LAKE 10080 45.2 36.2 125 35.2 25.7 137
SOUTH PASS 9040 25.7 17.2 149 30.1 21.5 140
WINDY PEAK 7840 2.1 5.4 39 14.1 13.1 108
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Basin wide percent of average 142 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 2.1 5 32.9 19.1 172
DIVIDE PEAK 8800 23.8 15.4 155 29.7 28.2 105
OLD BATTLE 10000 48.4 37.5 129 46.5 36.7 127
SANDSTONE RS 8150 7.7 5.5 140 26.1 23.8 110
WHISKEY PARK 8950 44.2 27.1 163 41.0 35.1 117
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Basin wide percent of average 142 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 14.8 11.6 128 19.6 19.0 103
BLIND BULL SUM 8650 44.5 22.5 198 37.0 27.6 134
EAST RIM DIVIDE 7930 14.4 13.6 106 18.8 17.8 106
ELKHART PARK G.S. 9400 16.7 11.6 144 21.0 18.7 112
GROS VENTRE SUMMIT 8775 21.2 11.7 181 23.1 18.6 124
KENDALL R.S. 7740 14.8 4.5 329 25.0 18.1 138
LOOMIS PARK 8240 -M 12.9 * 29.7 22.0 135
NEW FORK LAKE 8340 8.5 7.4 115 15.3 16.9 91
SNIDER BASIN 8250 16.9 10.4 162 22.0 17.7 124
SPRING CREEK DIVIDE 9000 35.9 27.5 131 37.3 31.6 118
TRIPLE PEAK 8500 31.6 22.8 139 43.8 36.0 122
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Basin wide percent of average 153 120
LOWER GREEN RIVER
HAMS FORK 7840 8.1 2.4 338 18.9 15.6 121
HEWINTA 9500 3.6 2.3 157 17.2 17.0 101
HICKERSON PARK 9150 4.6 1.6 288 12.4 13.0 95
HOLE-IN-ROCK 9150 1.8 1.3 138 12.8 13.0 98
INDIAN CREEK 9425 41.8 26.6 157 37.0 30.0 123
KELLEY R.S. 8180 19.1 12.1 158 35.2 21.9 161
STEEL CREEK PARK 10100 20.5 17.6 116 19.9 17.1 116
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Basin wide percent of average 156 120
UPPER BEAR RIVER
BUG LAKE 7950 29.6 12.6 235 34.4 23.2 148
HAYDEN FORK 9400 11.3 3.2 353 30.0 23.8 126
KELLEY R.S. 8180 19.1 12.1 158 35.2 21.9 161
LILY LAKE 9050 11.1 7.0 159 23.7 18.8 126
MONTE CRISTO 8960 38.6 23.7 163 39.3 31.2 126
SALT RIVER SUMMIT 7600 15.7 4.6 341 26.7 19.8 135
TRIAL LAKE 9960 35.3 22.3 158 38.9 29.2 133
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Basin wide percent of average 188 136
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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.