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 2 , 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 25.9 10.3 251 38.8 25.3 153
COTTONWOOD CREEK 7600 33.0 19.6 168 39.5 28.3 140
GRANITE CREEK 6770 25.3 12.5 202 35.6 26.9 132
GRASSY LAKE 7265 47.9 33.4 143 61.0 42.0 145
GROS VENTRE SUMMIT 8775 23.4 13.6 172 23.1 18.2 127
LEWIS LAKE DIVIDE 7860 54.6 34.1 160 63.5 42.7 149
PHILLIPS BENCH 8200 43.3 29.2 148 50.7 33.7 150
SALT RIVER SUMMIT 7600 20.2 10.0 202 26.7 19.3 138
SNAKE RIVER STATION 6920 22.3 16.1 139 40.7 29.5 138
SPRING CREEK DIVIDE 9000 41.7 29.3 142 37.3 30.9 121
THUMB DIVIDE 7980 29.8 14.8 201 36.8 23.7 155
TOGWOTEE PASS 9580 38.4 28.1 137 39.2 32.0 123
TWO OCEAN PLATEAU 9360 50.8 27.5 185 -M 34.8 *
WILLOW CREEK 8450 45.5 31.6 144 53.3 36.3 147
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Basin wide percent of average 162 140
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.9 * 34.3 21.3 161
BLACK BEAR 7950 -M 39.6 * -M 46.6 *
CANYON 7940 22.0 10.6 208 -M 16.4 *
FISHER CREEK 9100 60.7 38.6 157 -M 42.4 *
MADISON PLATEAU 7750 42.6 23.5 181 45.9 30.0 153
NORTHEAST ENTRANCE 7350 8.8 5.7 154 22.7 14.0 162
PARKER PEAK 9400 -M 23.6 * -M 18.3 *
SYLVAN LAKE 8420 32.3 23.6 137 36.8 22.4 164
THUMB DIVIDE 7980 29.8 14.8 201 36.8 23.7 155
TWO OCEAN PLATEAU 9360 50.8 27.5 185 -M 34.8 *
WHISKEY CREEK 6800 22.8 14.8 154 34.9 25.0 140
WHITE MILL 8700 42.7 26.2 163 -M 32.7 *
WOLVERINE 7650 12.7 7.7 165 18.1 15.3 118
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Basin wide percent of average 168 151
WIND RIVER
BURROUGHS CREEK 8750 24.2 12.5 194 28.6 19.5 147
CHRISTINA LAKE 9980 22.7 17.9 127 27.2 20.2 135
COLD SPRINGS 9630 9.2 6.5 142 16.4 13.2 124
HOBBS PARK 10100 22.9 17.9 128 19.2 17.4 110
LITTLE WARM 9620 19.7 10.0 197 24.3 16.4 148
SOUTH PASS 9040 28.1 18.0 156 29.6 20.7 143
ST. LAWRENCE ALT 8620 11.4 5.2 219 16.0 12.6 127
TOGWOTEE PASS 9580 38.4 28.1 137 39.2 32.0 123
TOWNSEND CREEK 8700 13.3 9.3 143 18.1 15.6 116
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Basin wide percent of average 151 130
BIGHORN BASIN
BALD MTN. 9375 26.4 24.1 110 22.4 20.9 107
BEAR TRAP MEADOW 7900 -M 4.0 * 12.6 10.7 118
BLACKWATER 9780 43.1 25.6 168 33.7 20.7 163
BONE SPRINGS DIV 9350 -M 18.3 * 20.8 18.2 114
EVENING STAR 9200 45.4 30.8 147 45.8 26.0 176
GRAVE SPRINGS 8550 13.5 -M * 14.7 12.5 118
KIRWIN 9550 17.6 11.6 152 19.5 13.4 146
LOST CREEK 8080 -M 15.6 * 20.2 15.1 134
MARQUETTE 8760 -M 8.5 * 15.9 13.6 117
MIDDLE POWDER 7760 -M 14.7 * 18.6 14.9 125
OWL CREEK 8975 7.0 3.2 219 9.0 8.2 110
POWDER RIVER PASS 9480 -M 10.2 * 17.2 14.8 116
SHELL CREEK 9580 21.1 17.0 124 18.9 16.0 118
SYLVAN LAKE 8420 32.3 23.6 137 36.8 22.4 164
SYLVAN ROAD 8120 16.7 7.6 220 30.2 18.7 161
TIMBER CREEK 7950 7.3 5.8 126 11.3 10.1 112
YOUNTS PEAK 8350 25.0 18.1 138 -M 19.4 *
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Basin wide percent of average 145 136
SHOSHONE RIVER
BLACKWATER 9780 43.1 25.6 168 33.7 20.7 163
EVENING STAR 9200 45.4 30.8 147 45.8 26.0 176
KIRWIN 9550 17.6 11.6 152 19.5 13.4 146
MARQUETTE 8760 -M 8.5 * 15.9 13.6 117
SYLVAN LAKE 8420 32.3 23.6 137 36.8 22.4 164
SYLVAN ROAD 8120 16.7 7.6 220 30.2 18.7 161
YOUNTS PEAK 8350 25.0 18.1 138 -M 19.4 *
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Basin wide percent of average 154 158
POWDER-TONGUE
BEAR TRAP MEADOW 7900 -M 4.0 * 12.6 10.7 118
BONE SPRINGS DIV 9350 -M 18.3 * 20.8 18.2 114
BURGESS JUNCTION 7880 17.3 13.3 130 17.5 14.5 121
CLOUD PEAK RESERVOIR 9860 -M 17.6 * -M 17.2 *
DOME LAKE 8880 -M 14.7 * -M 16.5 *
GRAVE SPRINGS 8550 13.5 -M * 14.7 12.5 118
HANSEN SAWMILL 8760 -M 6.7 * 11.7 10.4 112
LOST CREEK 8080 -M 15.6 * 20.2 15.1 134
MIDDLE POWDER 7760 -M 14.7 * 18.6 14.9 125
POWDER RIVER PASS 9480 -M 10.2 * 17.2 14.8 116
SUCKER CREEK 8880 -M 13.6 * -M 16.6 *
TIE CREEK 6870 8.1 -M * 17.4 13.9 125
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Basin wide percent of average 130* 121
BELLE FOURCHE
BLIND PARK 6890 8.0 9.2 87 19.2 13.9 138
NORTH RAPID CREEK 6130 10.6 -M * 18.1 -M *
WARREN PEAK 6520 20.8 9.2 226 -M 10.4 *
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Basin wide percent of average 157 138*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.6 21.5 138 37.7 28.2 134
DIVIDE PEAK 8800 27.8 18.8 148 29.4 27.4 107
ELK RIVER 8700 26.0 15.7 166 30.3 22.2 136
JOE WRIGHT 10120 35.5 24.6 144 36.8 30.4 121
NORTH FRENCH CREEK 10100 40.6 29.2 139 35.6 28.1 127
OLD BATTLE 10000 49.3 38.1 129 44.7 35.8 125
SOUTH BRUSH CREEK 8400 10.8 10.3 105 21.3 20.7 103
TOWER 10500 31.2 51.1 61 57.4 43.4 132
WEBBER SPRINGS 9200 34.7 25.6 136 42.0 30.7 137
WILLOW CREEK PASS 9540 -M 13.3 * 19.7 15.5 127
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Basin wide percent of average 122 126
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 42.4 28.6 148 34.3 23.9 144
CASPER MTN. 7900 26.6 17.3 154 26.9 18.9 142
CHRISTINA LAKE 9980 22.7 17.9 127 27.2 20.2 135
DEADMAN HILL 10220 23.7 19.1 124 24.1 21.2 114
LAPRELE CREEK 8320 12.7 6.1 208 17.6 14.8 119
RENO HILL 8400 25.5 13.1 195 26.2 22.5 116
ROACH 9700 26.5 18.0 147 27.5 25.9 106
SAND LAKE 10080 45.2 37.1 122 34.6 24.9 139
SOUTH PASS 9040 28.1 18.0 156 29.6 20.7 143
WINDY PEAK 7840 6.7 7.6 88 13.9 12.3 113
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Basin wide percent of average 142 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.7 4.5 127 31.6 18.6 170
DIVIDE PEAK 8800 27.8 18.8 148 29.4 27.4 107
OLD BATTLE 10000 49.3 38.1 129 44.7 35.8 125
SANDSTONE RS 8150 13.3 9.3 143 25.9 23.1 112
WHISKEY PARK 8950 45.2 29.3 154 40.2 34.1 118
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Basin wide percent of average 141 124
UPPER GREEN RIVER
BIG SANDY OPENING 9100 17.9 13.6 132 19.2 18.6 103
BLIND BULL SUM 8650 44.5 22.7 196 36.8 27.0 136
EAST RIM DIVIDE 7930 16.5 14.7 112 18.8 17.4 108
ELKHART PARK G.S. 9400 18.7 13.7 136 20.8 18.3 114
GROS VENTRE SUMMIT 8775 23.4 13.6 172 23.1 18.2 127
KENDALL R.S. 7740 19.1 9.8 195 25.0 17.7 141
LOOMIS PARK 8240 -M 14.8 * 29.7 21.5 138
NEW FORK LAKE 8340 12.4 8.9 139 14.6 16.5 88
SNIDER BASIN 8250 21.1 12.7 166 21.9 17.3 127
SPRING CREEK DIVIDE 9000 41.7 29.3 142 37.3 30.9 121
TRIPLE PEAK 8500 35.1 24.7 142 43.7 35.1 125
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Basin wide percent of average 153 122
LOWER GREEN RIVER
HAMS FORK 7840 13.0 5.3 245 18.8 15.3 123
HEWINTA 9500 9.0 4.9 184 17.2 16.4 105
HICKERSON PARK 9150 9.6 2.7 356 12.5 12.4 101
HOLE-IN-ROCK 9150 8.1 2.2 368 12.9 12.4 104
INDIAN CREEK 9425 43.7 28.6 153 36.8 29.3 126
KELLEY R.S. 8180 23.1 14.6 158 35.1 21.4 164
STEEL CREEK PARK 10100 20.9 18.7 112 19.8 16.2 122
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Basin wide percent of average 165 124
UPPER BEAR RIVER
BUG LAKE 7950 34.6 15.6 222 34.4 22.7 152
HAYDEN FORK 9400 15.4 6.2 248 29.9 23.1 129
KELLEY R.S. 8180 23.1 14.6 158 35.1 21.4 164
LILY LAKE 9050 16.5 8.5 194 23.7 18.1 131
MONTE CRISTO 8960 43.0 25.9 166 39.2 30.4 129
SALT RIVER SUMMIT 7600 20.2 10.0 202 26.7 19.3 138
TRIAL LAKE 9960 36.9 23.8 155 37.0 28.4 130
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Basin wide percent of average 181 138
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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.