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: APRIL 4 , 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 30.0 17.4 172 35.0 23.0 152
COTTONWOOD CREEK 7600 31.8 24.2 131 33.0 26.0 127
GRANITE CREEK 6770 29.4 18.6 158 33.1 24.3 136
GRASSY LAKE 7265 47.4 36.6 130 53.1 38.5 138
GROS VENTRE SUMMIT 8775 23.1 15.8 146 21.6 16.5 131
LEWIS LAKE DIVIDE 7860 52.8 35.9 147 45.9 39.1 117
PHILLIPS BENCH 8200 43.4 29.7 146 46.2 30.9 150
SALT RIVER SUMMIT 7600 22.1 14.4 153 23.8 17.5 136
SNAKE RIVER STATION 6920 28.6 18.8 152 36.6 27.0 136
SPRING CREEK DIVIDE 9000 36.0 28.5 126 32.9 28.4 116
THUMB DIVIDE 7980 32.4 17.2 188 33.5 21.5 156
TOGWOTEE PASS 9580 35.1 25.6 137 34.0 29.3 116
TWO OCEAN PLATEAU 9360 45.5 26.8 170 -M 31.7 *
WILLOW CREEK 8450 40.3 30.8 131 43.0 33.2 130
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Basin wide percent of average 146 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.8 24.2 148 30.5 18.5 165
BLACK BEAR 7950 -M 38.9 * -M 41.8 *
CANYON 7940 23.5 13.2 178 26.4 14.6 181
FISHER CREEK 9100 55.9 36.5 153 -M 37.6 *
MADISON PLATEAU 7750 42.3 25.0 169 42.3 27.0 157
NORTHEAST ENTRANCE 7350 12.1 9.2 132 19.4 12.1 160
PARKER PEAK 9400 31.6 22.1 143 -M 16.0 *
SYLVAN LAKE 8420 32.7 22.6 145 33.2 19.6 169
THUMB DIVIDE 7980 32.4 17.2 188 33.5 21.5 156
TWO OCEAN PLATEAU 9360 45.5 26.8 170 -M 31.7 *
WHISKEY CREEK 6800 25.7 17.7 145 31.9 22.5 142
WHITE MILL 8700 38.4 25.3 152 -M 29.1 *
WOLVERINE 7650 14.0 11.7 120 15.5 13.0 119
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Basin wide percent of average 155 156
WIND RIVER
BURROUGHS CREEK 8750 24.0 15.1 159 25.9 17.0 152
CHRISTINA LAKE 9980 20.4 15.7 130 23.1 17.1 135
COLD SPRINGS 9630 10.2 8.5 120 12.2 10.9 112
HOBBS PARK 10100 17.9 15.4 116 14.1 14.5 97
LITTLE WARM 9620 18.3 12.0 153 20.4 13.6 150
SOUTH PASS 9040 25.0 16.7 150 25.3 17.5 145
ST. LAWRENCE ALT 8620 8.8 7.5 117 10.9 10.4 105
TOGWOTEE PASS 9580 35.1 25.6 137 34.0 29.3 116
TOWNSEND CREEK 8700 10.4 10.0 104 12.7 12.8 99
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Basin wide percent of average 134 125
BIGHORN BASIN
BALD MTN. 9375 22.7 20.9 109 18.9 17.7 107
BEAR TRAP MEADOW 7900 6.7 7.1 94 8.9 8.4 106
BLACKWATER 9780 38.3 22.9 167 29.2 18.4 159
BONE SPRINGS DIV 9350 19.6 16.8 117 17.1 15.4 111
EVENING STAR 9200 41.8 27.6 151 39.9 23.0 173
GRAVE SPRINGS 8550 12.8 -M * 11.4 9.9 115
KIRWIN 9550 14.8 10.2 145 16.1 11.1 145
LOST CREEK 8080 15.8 14.0 113 15.9 12.1 131
MARQUETTE 8760 11.4 8.2 139 11.7 9.9 118
MIDDLE POWDER 7760 17.4 12.5 139 15.2 12.1 126
OWL CREEK 8975 8.4 4.6 183 7.0 6.4 109
POWDER RIVER PASS 9480 -M 11.1 * 13.6 11.8 115
SHELL CREEK 9580 18.3 15.3 120 15.1 13.4 113
SYLVAN LAKE 8420 32.7 22.6 145 33.2 19.6 169
SYLVAN ROAD 8120 20.6 12.1 170 26.9 16.4 164
TIMBER CREEK 7950 7.1 6.4 111 8.2 7.3 112
YOUNTS PEAK 8350 24.4 17.5 139 27.3 17.0 161
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Basin wide percent of average 137 137
SHOSHONE RIVER
BLACKWATER 9780 38.3 22.9 167 29.2 18.4 159
EVENING STAR 9200 41.8 27.6 151 39.9 23.0 173
KIRWIN 9550 14.8 10.2 145 16.1 11.1 145
MARQUETTE 8760 11.4 8.2 139 11.7 9.9 118
SYLVAN LAKE 8420 32.7 22.6 145 33.2 19.6 169
SYLVAN ROAD 8120 20.6 12.1 170 26.9 16.4 164
YOUNTS PEAK 8350 24.4 17.5 139 27.3 17.0 161
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Basin wide percent of average 152 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.7 7.1 94 8.9 8.4 106
BONE SPRINGS DIV 9350 19.6 16.8 117 17.1 15.4 111
BURGESS JUNCTION 7880 14.4 12.0 120 14.1 11.8 119
CLOUD PEAK RESERVOIR 9860 18.4 15.3 120 15.5 13.7 113
DOME LAKE 8880 13.8 14.0 99 14.6 13.5 108
GRAVE SPRINGS 8550 12.8 -M * 11.4 9.9 115
HANSEN SAWMILL 8760 7.4 7.2 103 8.9 8.1 110
LOST CREEK 8080 15.8 14.0 113 15.9 12.1 131
MIDDLE POWDER 7760 17.4 12.5 139 15.2 12.1 126
POWDER RIVER PASS 9480 -M 11.1 * 13.6 11.8 115
SUCKER CREEK 8880 15.0 12.4 121 16.0 13.4 119
TIE CREEK 6870 7.3 -M * 12.6 11.3 112
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Basin wide percent of average 115 116
BELLE FOURCHE
BLIND PARK 6890 9.1 11.2 81 14.7 10.4 141
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 17.8 11.2 159 -M 8.2 *
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Basin wide percent of average 120 141*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.5 24.8 115 31.4 24.9 126
DIVIDE PEAK 8800 26.7 21.4 125 25.4 23.3 109
ELK RIVER 8700 26.9 20.1 134 25.1 19.5 129
JOE WRIGHT 10120 25.1 22.6 111 29.3 25.5 115
NORTH FRENCH CREEK 10100 35.9 26.2 137 27.6 24.0 115
OLD BATTLE 10000 41.1 33.0 125 38.9 30.8 126
SOUTH BRUSH CREEK 8400 13.5 13.3 102 17.8 16.7 107
TOWER 10500 54.6 46.2 118 47.7 36.9 129
WEBBER SPRINGS 9200 31.8 28.4 112 36.6 25.7 142
WILLOW CREEK PASS 9540 18.8 12.3 153 15.5 12.9 120
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Basin wide percent of average 122 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 36.2 27.0 134 28.0 19.8 141
CASPER MTN. 7900 22.1 17.1 129 20.8 14.5 143
CHRISTINA LAKE 9980 20.4 15.7 130 23.1 17.1 135
DEADMAN HILL 10220 16.8 16.9 99 18.8 17.1 110
LAPRELE CREEK 8320 15.1 10.5 144 15.0 12.1 124
RENO HILL 8400 23.4 14.6 160 20.5 19.5 105
ROACH 9700 22.7 17.6 129 22.0 21.6 102
SAND LAKE 10080 38.5 33.7 114 30.1 20.8 145
SOUTH PASS 9040 25.0 16.7 150 25.3 17.5 145
WINDY PEAK 7840 10.6 8.9 119 11.9 9.8 121
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Basin wide percent of average 129 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.1 11.2 126 28.7 15.6 184
DIVIDE PEAK 8800 26.7 21.4 125 25.4 23.3 109
OLD BATTLE 10000 41.1 33.0 125 38.9 30.8 126
SANDSTONE RS 8150 17.9 15.1 119 22.4 19.0 118
WHISKEY PARK 8950 37.9 29.4 129 33.6 28.8 117
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Basin wide percent of average 125 127
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.8 14.8 134 18.4 16.8 110
BLIND BULL SUM 8650 43.6 30.1 145 32.9 24.8 133
EAST RIM DIVIDE 7930 16.9 14.2 119 17.3 15.7 110
ELKHART PARK G.S. 9400 18.2 14.1 129 18.6 16.5 113
GROS VENTRE SUMMIT 8775 23.1 15.8 146 21.6 16.5 131
KENDALL R.S. 7740 23.7 14.4 165 24.0 16.1 149
LOOMIS PARK 8240 -M 17.5 * 27.5 19.5 141
NEW FORK LAKE 8340 15.4 11.2 138 13.5 15.0 90
SNIDER BASIN 8250 23.6 15.0 157 19.5 15.7 124
SPRING CREEK DIVIDE 9000 36.0 28.5 126 32.9 28.4 116
TRIPLE PEAK 8500 36.9 26.1 141 38.0 32.0 119
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Basin wide percent of average 140 122
LOWER GREEN RIVER
HAMS FORK 7840 15.8 10.9 145 14.9 13.8 108
HEWINTA 9500 12.1 11.0 110 14.5 13.4 108
HICKERSON PARK 9150 9.4 6.8 138 9.8 9.8 100
HOLE-IN-ROCK 9150 7.0 6.4 109 10.4 9.8 106
INDIAN CREEK 9425 41.2 29.3 141 31.9 26.9 119
KELLEY R.S. 8180 24.7 17.4 142 26.4 19.4 136
STEEL CREEK PARK 10100 16.7 16.9 99 16.2 13.1 124
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Basin wide percent of average 129 117
UPPER BEAR RIVER
BUG LAKE 7950 33.6 21.0 160 29.7 19.9 149
HAYDEN FORK 9400 18.0 15.3 118 25.6 19.5 131
KELLEY R.S. 8180 24.7 17.4 142 26.4 19.4 136
LILY LAKE 9050 16.9 13.3 127 19.7 15.1 130
MONTE CRISTO 8960 38.3 29.8 129 33.7 26.2 129
SALT RIVER SUMMIT 7600 22.1 14.4 153 23.8 17.5 136
TRIAL LAKE 9960 34.8 25.2 138 34.7 24.4 142
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Basin wide percent of average 138 136
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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.