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: APRIL 19 , 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 29.6 14.7 201 36.2 24.2 150
COTTONWOOD CREEK 7600 30.8 22.5 137 34.0 27.2 125
GRANITE CREEK 6770 27.3 16.6 164 33.5 25.7 130
GRASSY LAKE 7265 48.2 36.8 131 56.3 40.4 139
GROS VENTRE SUMMIT 8775 22.8 15.5 147 22.0 17.4 126
LEWIS LAKE DIVIDE 7860 52.9 36.2 146 -M 41.0 *
PHILLIPS BENCH 8200 -M 30.6 * 47.2 32.4 146
SALT RIVER SUMMIT 7600 21.5 13.1 164 24.7 18.4 134
SNAKE RIVER STATION 6920 26.7 18.1 148 37.6 28.3 133
SPRING CREEK DIVIDE 9000 38.2 29.4 130 33.8 29.7 114
THUMB DIVIDE 7980 32.8 16.8 195 34.1 22.7 150
TOGWOTEE PASS 9580 35.2 27.3 129 35.7 30.7 116
TWO OCEAN PLATEAU 9360 47.1 26.9 175 -M 33.4 *
WILLOW CREEK 8450 40.1 31.8 126 45.6 34.9 131
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Basin wide percent of average 148 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 37.2 25.6 145 32.0 20.0 160
BLACK BEAR 7950 -M 40.1 * -M 44.4 *
CANYON 7940 22.8 12.9 177 -M 15.5 *
FISHER CREEK 9100 56.9 38.1 149 -M 40.2 *
MADISON PLATEAU 7750 43.9 25.2 174 43.2 28.6 151
NORTHEAST ENTRANCE 7350 11.4 8.2 139 20.0 13.1 153
PARKER PEAK 9400 32.7 23.3 140 -M 17.2 *
SYLVAN LAKE 8420 32.4 23.9 136 33.9 21.1 161
THUMB DIVIDE 7980 32.8 16.8 195 34.1 22.7 150
TWO OCEAN PLATEAU 9360 47.1 26.9 175 -M 33.4 *
WHISKEY CREEK 6800 25.9 17.4 149 32.2 23.8 135
WHITE MILL 8700 39.6 25.9 153 -M 31.0 *
WOLVERINE 7650 14.2 10.9 130 16.2 14.2 114
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Basin wide percent of average 156 147
WIND RIVER
BURROUGHS CREEK 8750 23.9 14.7 163 27.0 18.3 148
CHRISTINA LAKE 9980 20.8 17.0 122 24.2 18.8 129
COLD SPRINGS 9630 9.6 8.2 117 13.5 12.1 112
HOBBS PARK 10100 18.7 16.9 111 15.5 16.1 96
LITTLE WARM 9620 18.4 12.7 145 21.3 15.1 141
SOUTH PASS 9040 25.6 17.7 145 26.2 19.2 136
ST. LAWRENCE ALT 8620 9.7 6.7 145 12.7 11.6 109
TOGWOTEE PASS 9580 35.2 27.3 129 35.7 30.7 116
TOWNSEND CREEK 8700 11.0 10.2 108 14.0 14.3 98
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Basin wide percent of average 132 122
BIGHORN BASIN
BALD MTN. 9375 23.9 22.8 105 20.2 19.4 104
BEAR TRAP MEADOW 7900 7.2 6.2 116 10.8 9.6 113
BLACKWATER 9780 40.4 24.9 162 31.3 19.6 160
BONE SPRINGS DIV 9350 19.6 18.2 108 19.4 16.9 115
EVENING STAR 9200 42.5 29.6 144 41.7 24.6 170
GRAVE SPRINGS 8550 13.2 -M * 12.7 11.3 112
KIRWIN 9550 15.8 11.2 141 17.2 12.3 140
LOST CREEK 8080 18.6 15.3 122 17.6 13.7 128
MARQUETTE 8760 12.8 8.7 147 13.7 11.9 115
MIDDLE POWDER 7760 18.7 13.9 135 16.4 13.6 121
OWL CREEK 8975 8.0 4.4 182 7.5 7.3 103
POWDER RIVER PASS 9480 -M 11.3 * 15.2 13.4 113
SHELL CREEK 9580 19.4 16.4 118 16.6 14.8 112
SYLVAN LAKE 8420 32.4 23.9 136 33.9 21.1 161
SYLVAN ROAD 8120 19.7 10.1 195 27.7 17.6 157
TIMBER CREEK 7950 7.9 6.5 122 9.1 8.8 103
YOUNTS PEAK 8350 25.0 18.3 137 -M 18.3 *
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Basin wide percent of average 135 132
SHOSHONE RIVER
BLACKWATER 9780 40.4 24.9 162 31.3 19.6 160
EVENING STAR 9200 42.5 29.6 144 41.7 24.6 170
KIRWIN 9550 15.8 11.2 141 17.2 12.3 140
MARQUETTE 8760 12.8 8.7 147 13.7 11.9 115
SYLVAN LAKE 8420 32.4 23.9 136 33.9 21.1 161
SYLVAN ROAD 8120 19.7 10.1 195 27.7 17.6 157
YOUNTS PEAK 8350 25.0 18.3 137 -M 18.3 *
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Basin wide percent of average 149 155
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.2 6.2 116 10.8 9.6 113
BONE SPRINGS DIV 9350 19.6 18.2 108 19.4 16.9 115
BURGESS JUNCTION 7880 16.1 13.1 123 15.9 13.2 120
CLOUD PEAK RESERVOIR 9860 18.8 17.0 111 17.3 15.6 111
DOME LAKE 8880 15.5 14.9 104 16.6 15.1 110
GRAVE SPRINGS 8550 13.2 -M * 12.7 11.3 112
HANSEN SAWMILL 8760 6.7 7.4 91 9.7 9.3 104
LOST CREEK 8080 18.6 15.3 122 17.6 13.7 128
MIDDLE POWDER 7760 18.7 13.9 135 16.4 13.6 121
POWDER RIVER PASS 9480 -M 11.3 * 15.2 13.4 113
SUCKER CREEK 8880 17.4 13.4 130 18.3 15.1 121
TIE CREEK 6870 7.6 -M * 14.7 12.7 116
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Basin wide percent of average 116 116
BELLE FOURCHE
BLIND PARK 6890 9.8 11.1 88 17.1 12.3 139
NORTH RAPID CREEK 6130 11.9 -M * 15.3 -M *
WARREN PEAK 6520 21.1 11.1 190 -M 9.4 *
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Basin wide percent of average 139 139*
UPPER N. PLATTE RIVER
COLUMBINE 9400 29.8 23.8 125 34.0 26.7 127
DIVIDE PEAK 8800 28.7 21.2 135 27.4 25.5 107
ELK RIVER 8700 28.7 19.4 148 27.7 20.9 133
JOE WRIGHT 10120 29.2 24.3 120 32.2 28.2 114
NORTH FRENCH CREEK 10100 38.1 28.5 134 31.6 26.2 121
OLD BATTLE 10000 44.0 36.4 121 41.3 33.5 123
SOUTH BRUSH CREEK 8400 13.8 12.4 111 19.2 18.9 102
TOWER 10500 57.7 49.5 117 52.7 40.4 130
WEBBER SPRINGS 9200 31.2 28.0 111 38.7 28.4 136
WILLOW CREEK PASS 9540 22.2 13.5 164 18.0 14.3 126
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Basin wide percent of average 126 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 39.0 29.0 134 30.4 22.0 138
CASPER MTN. 7900 25.0 18.7 134 23.0 16.9 136
CHRISTINA LAKE 9980 20.8 17.0 122 24.2 18.8 129
DEADMAN HILL 10220 17.7 18.1 98 20.8 19.3 108
LAPRELE CREEK 8320 15.8 9.1 174 16.3 13.5 121
RENO HILL 8400 24.9 15.0 166 23.2 21.1 110
ROACH 9700 24.6 18.1 136 24.3 23.9 102
SAND LAKE 10080 41.4 36.1 115 32.4 23.0 141
SOUTH PASS 9040 25.6 17.7 145 26.2 19.2 136
WINDY PEAK 7840 10.4 9.0 116 13.4 11.1 121
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Basin wide percent of average 131 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.2 9.4 140 30.1 17.2 175
DIVIDE PEAK 8800 28.7 21.2 135 27.4 25.5 107
OLD BATTLE 10000 44.0 36.4 121 41.3 33.5 123
SANDSTONE RS 8150 17.3 13.9 124 23.4 21.2 110
WHISKEY PARK 8950 41.5 30.4 137 36.0 31.7 114
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Basin wide percent of average 130 123
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.2 15.0 128 17.9 17.7 101
BLIND BULL SUM 8650 44.1 28.9 153 34.0 26.0 131
EAST RIM DIVIDE 7930 17.5 15.0 117 17.8 16.6 107
ELKHART PARK G.S. 9400 19.3 14.8 130 19.4 17.4 111
GROS VENTRE SUMMIT 8775 22.8 15.5 147 22.0 17.4 126
KENDALL R.S. 7740 22.1 12.5 177 24.1 16.9 143
LOOMIS PARK 8240 -M 16.4 * 28.1 20.6 136
NEW FORK LAKE 8340 14.2 10.3 138 13.9 15.8 88
SNIDER BASIN 8250 23.6 14.9 158 20.0 16.5 121
SPRING CREEK DIVIDE 9000 38.2 29.4 130 33.8 29.7 114
TRIPLE PEAK 8500 34.3 26.4 130 39.0 33.7 116
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Basin wide percent of average 140 118
LOWER GREEN RIVER
HAMS FORK 7840 14.0 5.7 246 15.5 14.6 106
HEWINTA 9500 10.3 8.1 127 15.2 15.0 101
HICKERSON PARK 9150 11.5 5.7 202 11.4 11.2 102
HOLE-IN-ROCK 9150 10.9 5.2 210 11.7 11.2 104
INDIAN CREEK 9425 42.0 30.0 140 32.8 28.2 116
KELLEY R.S. 8180 23.7 17.0 139 27.7 20.5 135
STEEL CREEK PARK 10100 17.5 18.1 97 17.2 14.8 116
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Basin wide percent of average 145 114
UPPER BEAR RIVER
BUG LAKE 7950 33.0 19.0 174 30.5 21.4 143
HAYDEN FORK 9400 16.0 9.8 163 26.2 21.4 122
KELLEY R.S. 8180 23.7 17.0 139 27.7 20.5 135
LILY LAKE 9050 16.6 11.9 139 20.5 16.7 123
MONTE CRISTO 8960 37.8 28.5 133 34.4 28.5 121
SALT RIVER SUMMIT 7600 21.5 13.1 164 24.7 18.4 134
TRIAL LAKE 9960 35.0 25.5 137 35.3 26.6 133
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Basin wide percent of average 147 130
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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.