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: MAY 10 , 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 20.3 6.9 294 39.1 26.0 150
COTTONWOOD CREEK 7600 28.8 16.1 179 39.6 29.0 137
GRANITE CREEK 6770 21.5 9.3 231 35.7 27.7 129
GRASSY LAKE 7265 44.1 29.6 149 61.3 43.2 142
GROS VENTRE SUMMIT 8775 20.6 11.5 179 23.2 18.7 124
LEWIS LAKE DIVIDE 7860 53.3 31.3 170 63.8 43.9 145
PHILLIPS BENCH 8200 41.5 26.8 155 51.0 34.6 147
SALT RIVER SUMMIT 7600 14.6 3.9 374 26.7 19.8 135
SNAKE RIVER STATION 6920 15.4 13.2 117 40.9 30.3 135
SPRING CREEK DIVIDE 9000 35.0 27.3 128 37.3 31.7 118
THUMB DIVIDE 7980 24.4 12.6 194 37.1 24.3 153
TOGWOTEE PASS 9580 37.7 26.8 141 39.8 32.9 121
TWO OCEAN PLATEAU 9360 46.2 26.8 172 -M 35.8 *
WILLOW CREEK 8450 42.5 29.3 145 53.4 37.3 143
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Basin wide percent of average 164 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.3 * 35.3 22.3 158
BLACK BEAR 7950 -M 38.0 * -M 47.7 *
CANYON 7940 18.3 8.1 226 29.6 17.1 173
FISHER CREEK 9100 60.7 37.9 160 -M 43.6 *
MADISON PLATEAU 7750 37.7 20.7 182 46.2 30.9 150
NORTHEAST ENTRANCE 7350 4.7 3.8 124 23.4 14.7 159
PARKER PEAK 9400 39.3 23.1 170 -M 19.2 *
SYLVAN LAKE 8420 30.0 21.7 138 37.2 23.5 158
THUMB DIVIDE 7980 24.4 12.6 194 37.1 24.3 153
TWO OCEAN PLATEAU 9360 46.2 26.8 172 -M 35.8 *
WHISKEY CREEK 6800 19.7 11.5 171 35.3 25.7 137
WHITE MILL 8700 42.4 25.4 167 -M 33.8 *
WOLVERINE 7650 8.2 4.8 171 19.1 16.0 119
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Basin wide percent of average 169 151
WIND RIVER
BURROUGHS CREEK 8750 21.3 9.0 237 28.9 20.3 142
CHRISTINA LAKE 9980 21.4 17.4 123 27.8 21.1 132
COLD SPRINGS 9630 6.7 4.2 160 16.6 14.0 119
HOBBS PARK 10100 21.6 17.3 125 19.6 18.3 107
LITTLE WARM 9620 15.9 7.2 221 24.4 17.2 142
SOUTH PASS 9040 25.0 17.1 146 30.2 21.6 140
ST. LAWRENCE ALT 8620 8.6 3.5 246 16.4 13.2 124
TOGWOTEE PASS 9580 37.7 26.8 141 39.8 32.9 121
TOWNSEND CREEK 8700 10.6 7.3 145 18.3 16.4 112
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Basin wide percent of average 154 127
BIGHORN BASIN
BALD MTN. 9375 26.1 24.3 107 23.0 22.1 104
BEAR TRAP MEADOW 7900 -M 2.4 * 13.0 11.6 112
BLACKWATER 9780 42.8 25.1 171 34.3 21.6 159
BONE SPRINGS DIV 9350 21.7 17.2 126 21.4 19.3 111
EVENING STAR 9200 44.8 30.5 147 46.5 27.1 172
GRAVE SPRINGS 8550 11.2 -M * 14.8 13.5 110
KIRWIN 9550 16.0 10.7 150 20.3 14.1 144
LOST CREEK 8080 21.2 14.4 147 20.5 16.1 127
MARQUETTE 8760 13.2 8.0 165 16.3 14.6 112
MIDDLE POWDER 7760 16.8 14.3 117 18.9 15.8 120
OWL CREEK 8975 -M 1.9 * 9.6 8.9 108
POWDER RIVER PASS 9480 15.6 7.7 203 17.9 15.7 114
SHELL CREEK 9580 19.9 17.0 117 19.3 17.0 114
SYLVAN LAKE 8420 30.0 21.7 138 37.2 23.5 158
SYLVAN ROAD 8120 -M 5.4 * 30.4 19.5 156
TIMBER CREEK 7950 3.5 3.8 92 11.5 11.1 104
YOUNTS PEAK 8350 23.8 16.7 143 -M 20.2 *
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Basin wide percent of average 140 131
SHOSHONE RIVER
BLACKWATER 9780 42.8 25.1 171 34.3 21.6 159
EVENING STAR 9200 44.8 30.5 147 46.5 27.1 172
KIRWIN 9550 16.0 10.7 150 20.3 14.1 144
MARQUETTE 8760 13.2 8.0 165 16.3 14.6 112
SYLVAN LAKE 8420 30.0 21.7 138 37.2 23.5 158
SYLVAN ROAD 8120 -M 5.4 * 30.4 19.5 156
YOUNTS PEAK 8350 23.8 16.7 143 -M 20.2 *
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Basin wide percent of average 151 154
POWDER-TONGUE
BEAR TRAP MEADOW 7900 -M 2.4 * 13.0 11.6 112
BONE SPRINGS DIV 9350 21.7 17.2 126 21.4 19.3 111
BURGESS JUNCTION 7880 15.5 12.0 129 17.9 15.4 116
CLOUD PEAK RESERVOIR 9860 22.6 16.7 135 20.9 18.3 114
DOME LAKE 8880 15.4 12.0 128 19.8 17.5 113
GRAVE SPRINGS 8550 11.2 -M * 14.8 13.5 110
HANSEN SAWMILL 8760 3.5 5.0 70 12.1 11.1 109
LOST CREEK 8080 21.2 14.4 147 20.5 16.1 127
MIDDLE POWDER 7760 16.8 14.3 117 18.9 15.8 120
POWDER RIVER PASS 9480 15.6 7.7 203 17.9 15.7 114
SUCKER CREEK 8880 19.2 11.7 164 21.8 17.7 123
TIE CREEK 6870 4.9 -M * 17.9 14.7 122
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Basin wide percent of average 136 116
BELLE FOURCHE
BLIND PARK 6890 3.6 6.4 56 19.6 15.1 130
NORTH RAPID CREEK 6130 6.9 -M * 18.5 -M *
WARREN PEAK 6520 17.1 6.4 267 -M 11.2 *
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Basin wide percent of average 162 130*
UPPER N. PLATTE RIVER
COLUMBINE 9400 23.2 17.0 136 38.4 28.9 133
DIVIDE PEAK 8800 23.0 14.9 154 29.9 28.3 106
ELK RIVER 8700 19.7 11.2 176 30.9 22.8 136
JOE WRIGHT 10120 34.8 24.1 144 37.5 31.6 119
NORTH FRENCH CREEK 10100 38.8 27.7 140 36.3 29.2 124
OLD BATTLE 10000 48.0 37.4 128 46.5 36.8 126
SOUTH BRUSH CREEK 8400 5.5 7.6 72 21.8 21.4 102
TOWER 10500 30.8 50.9 61 59.7 45.0 133
WEBBER SPRINGS 9200 30.8 22.5 137 42.6 31.5 135
WILLOW CREEK PASS 9540 -M 11.7 * 20.3 16.2 125
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Basin wide percent of average 119 125
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 38.3 26.3 146 34.8 24.8 140
CASPER MTN. 7900 23.0 13.6 169 27.5 20.0 138
CHRISTINA LAKE 9980 21.4 17.4 123 27.8 21.1 132
DEADMAN HILL 10220 22.3 18.8 119 24.6 22.1 111
LAPRELE CREEK 8320 7.9 4.4 180 18.2 15.7 116
RENO HILL 8400 21.6 10.3 210 26.8 23.0 117
ROACH 9700 26.2 16.8 156 27.8 27.1 103
SAND LAKE 10080 45.2 36.0 126 35.1 25.8 136
SOUTH PASS 9040 25.0 17.1 146 30.2 21.6 140
WINDY PEAK 7840 .9 5.1 18 14.3 13.2 108
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Basin wide percent of average 140 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 1.7 6 32.9 19.2 171
DIVIDE PEAK 8800 23.0 14.9 154 29.9 28.3 106
OLD BATTLE 10000 48.0 37.4 128 46.5 36.8 126
SANDSTONE RS 8150 6.1 5.0 122 26.2 23.9 110
WHISKEY PARK 8950 43.7 26.8 163 41.0 35.2 116
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Basin wide percent of average 141 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 13.8 11.3 122 19.7 19.1 103
BLIND BULL SUM 8650 44.3 22.5 197 37.0 27.7 134
EAST RIM DIVIDE 7930 13.9 13.5 103 18.8 17.9 105
ELKHART PARK G.S. 9400 16.0 11.3 142 21.0 18.8 112
GROS VENTRE SUMMIT 8775 20.6 11.5 179 23.2 18.7 124
KENDALL R.S. 7740 13.8 3.8 363 25.0 18.2 137
LOOMIS PARK 8240 -M 12.7 * 29.8 22.1 135
NEW FORK LAKE 8340 7.7 7.2 107 15.5 17.0 91
SNIDER BASIN 8250 16.1 10.1 159 22.0 17.8 124
SPRING CREEK DIVIDE 9000 35.0 27.3 128 37.3 31.7 118
TRIPLE PEAK 8500 30.6 22.6 135 43.9 36.1 122
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Basin wide percent of average 150 120
LOWER GREEN RIVER
HAMS FORK 7840 6.9 2.0 345 18.9 15.7 120
HEWINTA 9500 2.4 1.9 126 17.2 17.1 101
HICKERSON PARK 9150 3.7 1.4 264 12.4 13.1 95
HOLE-IN-ROCK 9150 .7 1.1 64 12.8 13.1 98
INDIAN CREEK 9425 40.7 26.3 155 37.0 30.1 123
KELLEY R.S. 8180 18.1 11.8 153 35.2 22.0 160
STEEL CREEK PARK 10100 20.2 17.4 116 19.9 17.2 116
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Basin wide percent of average 150 120
UPPER BEAR RIVER
BUG LAKE 7950 28.7 12.2 235 34.3 23.3 147
HAYDEN FORK 9400 10.2 2.8 364 30.0 23.9 126
KELLEY R.S. 8180 18.1 11.8 153 35.2 22.0 160
LILY LAKE 9050 9.3 6.8 137 23.7 18.9 125
MONTE CRISTO 8960 38.0 23.4 162 39.4 31.3 126
SALT RIVER SUMMIT 7600 14.6 3.9 374 26.7 19.8 135
TRIAL LAKE 9960 34.5 22.1 156 38.9 29.3 133
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Basin wide percent of average 185 135
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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.