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 THURSDAY: MARCH 27 , 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 29.9 17.5 171 34.0 22.4 152
COTTONWOOD CREEK 7600 30.4 23.6 129 31.9 25.2 127
GRANITE CREEK 6770 28.4 18.3 155 32.6 23.5 139
GRASSY LAKE 7265 44.9 35.3 127 52.7 37.2 142
GROS VENTRE SUMMIT 8775 20.8 15.4 135 21.1 16.0 132
LEWIS LAKE DIVIDE 7860 52.1 34.8 150 46.0 37.8 122
PHILLIPS BENCH 8200 41.5 28.7 145 44.9 29.9 150
SALT RIVER SUMMIT 7600 21.8 14.1 155 23.4 16.9 138
SNAKE RIVER STATION 6920 27.7 18.5 150 35.7 26.1 137
SPRING CREEK DIVIDE 9000 34.4 27.6 125 32.3 27.5 117
THUMB DIVIDE 7980 31.5 16.8 188 -M 20.9 *
TOGWOTEE PASS 9580 34.0 24.5 139 -M 28.3 *
TWO OCEAN PLATEAU 9360 44.0 26.2 168 -M 30.8 *
WILLOW CREEK 8450 40.9 29.9 137 40.4 32.2 125
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Basin wide percent of average 146 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.4 23.2 153 30.1 17.7 170
BLACK BEAR 7950 -M 37.5 * -M 40.1 *
CANYON 7940 23.2 12.7 183 26.0 14.0 186
FISHER CREEK 9100 55.1 35.2 157 -M 36.1 *
MADISON PLATEAU 7750 41.0 24.2 169 41.8 25.9 161
NORTHEAST ENTRANCE 7350 12.0 9.1 132 19.1 11.6 165
PARKER PEAK 9400 30.9 21.3 145 -M 15.3 *
SYLVAN LAKE 8420 31.8 21.7 147 32.0 18.8 170
THUMB DIVIDE 7980 31.5 16.8 188 -M 20.9 *
TWO OCEAN PLATEAU 9360 44.0 26.2 168 -M 30.8 *
WHISKEY CREEK 6800 24.9 17.1 146 31.1 21.5 145
WHITE MILL 8700 38.2 24.6 155 -M 27.9 *
WOLVERINE 7650 14.2 11.5 123 15.1 12.5 121
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Basin wide percent of average 157 160
WIND RIVER
BURROUGHS CREEK 8750 23.9 14.8 161 25.5 16.3 156
CHRISTINA LAKE 9980 19.6 15.0 131 22.2 16.2 137
COLD SPRINGS 9630 10.2 8.2 124 11.7 10.2 115
HOBBS PARK 10100 17.0 14.6 116 13.2 13.7 96
LITTLE WARM 9620 18.0 11.2 161 19.5 12.9 151
SOUTH PASS 9040 25.3 16.0 158 24.3 16.6 146
ST. LAWRENCE ALT 8620 8.7 7.4 118 10.6 9.8 108
TOGWOTEE PASS 9580 34.0 24.5 139 -M 28.3 *
TOWNSEND CREEK 8700 10.0 9.6 104 11.7 12.1 97
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Basin wide percent of average 137 129
BIGHORN BASIN
BALD MTN. 9375 21.5 20.0 108 17.9 16.9 106
BEAR TRAP MEADOW 7900 7.4 7.0 106 8.5 7.9 108
BLACKWATER 9780 37.5 21.8 172 28.4 17.6 161
BONE SPRINGS DIV 9350 18.4 16.0 115 16.0 14.6 110
EVENING STAR 9200 41.2 26.5 155 39.0 22.1 176
GRAVE SPRINGS 8550 11.8 -M * 10.6 9.2 115
KIRWIN 9550 14.2 9.7 146 15.5 10.4 149
LOST CREEK 8080 14.5 13.2 110 15.0 11.4 132
MARQUETTE 8760 11.1 7.9 141 11.4 9.1 125
MIDDLE POWDER 7760 16.0 11.8 136 14.1 11.4 124
OWL CREEK 8975 7.8 4.5 173 6.6 6.0 110
POWDER RIVER PASS 9480 15.1 10.6 142 13.2 11.2 118
SHELL CREEK 9580 17.1 14.6 117 14.2 12.7 112
SYLVAN LAKE 8420 31.8 21.7 147 32.0 18.8 170
SYLVAN ROAD 8120 19.8 12.4 160 26.2 15.8 166
TIMBER CREEK 7950 7.1 6.1 116 7.9 6.7 118
YOUNTS PEAK 8350 23.6 16.9 140 -M 16.2 *
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Basin wide percent of average 138 137
SHOSHONE RIVER
BLACKWATER 9780 37.5 21.8 172 28.4 17.6 161
EVENING STAR 9200 41.2 26.5 155 39.0 22.1 176
KIRWIN 9550 14.2 9.7 146 15.5 10.4 149
MARQUETTE 8760 11.1 7.9 141 11.4 9.1 125
SYLVAN LAKE 8420 31.8 21.7 147 32.0 18.8 170
SYLVAN ROAD 8120 19.8 12.4 160 26.2 15.8 166
YOUNTS PEAK 8350 23.6 16.9 140 -M 16.2 *
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Basin wide percent of average 153 163
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.4 7.0 106 8.5 7.9 108
BONE SPRINGS DIV 9350 18.4 16.0 115 16.0 14.6 110
BURGESS JUNCTION 7880 13.1 11.5 114 12.9 11.0 117
CLOUD PEAK RESERVOIR 9860 17.3 14.3 121 14.5 12.8 113
DOME LAKE 8880 12.5 13.4 93 13.7 12.7 108
GRAVE SPRINGS 8550 11.8 -M * 10.6 9.2 115
HANSEN SAWMILL 8760 7.2 6.9 104 8.0 7.6 105
LOST CREEK 8080 14.5 13.2 110 15.0 11.4 132
MIDDLE POWDER 7760 16.0 11.8 136 14.1 11.4 124
POWDER RIVER PASS 9480 15.1 10.6 142 13.2 11.2 118
SUCKER CREEK 8880 13.9 11.8 118 14.3 12.7 113
TIE CREEK 6870 7.2 -M * 11.7 10.5 111
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Basin wide percent of average 116 115
BELLE FOURCHE
BLIND PARK 6890 9.5 10.8 88 14.2 9.6 148
NORTH RAPID CREEK 6130 9.2 -M * 12.6 -M *
WARREN PEAK 6520 16.7 10.8 155 -M 7.7 *
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Basin wide percent of average 121 148*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.8 24.5 118 29.9 23.9 125
DIVIDE PEAK 8800 25.4 20.5 124 24.0 22.1 109
ELK RIVER 8700 26.4 19.5 135 24.2 18.6 130
JOE WRIGHT 10120 23.5 21.4 110 27.5 24.2 114
NORTH FRENCH CREEK 10100 34.9 24.8 141 27.6 22.8 121
OLD BATTLE 10000 38.6 31.2 124 36.6 29.3 125
SOUTH BRUSH CREEK 8400 13.4 12.8 105 16.9 15.8 107
TOWER 10500 52.8 44.2 119 46.4 35.2 132
WEBBER SPRINGS 9200 30.4 27.3 111 34.7 24.5 142
WILLOW CREEK PASS 9540 16.9 11.6 146 14.1 12.2 116
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Basin wide percent of average 122 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.1 25.3 139 26.3 18.8 140
CASPER MTN. 7900 20.4 15.8 129 19.1 13.5 141
CHRISTINA LAKE 9980 19.6 15.0 131 22.2 16.2 137
DEADMAN HILL 10220 15.5 16.1 96 17.5 16.1 109
LAPRELE CREEK 8320 14.8 10.2 145 14.0 11.4 123
RENO HILL 8400 21.7 13.8 157 18.8 18.5 102
ROACH 9700 23.2 16.9 137 21.0 20.5 102
SAND LAKE 10080 35.6 32.1 111 28.2 19.7 143
SOUTH PASS 9040 25.3 16.0 158 24.3 16.6 146
WINDY PEAK 7840 10.1 8.4 120 11.5 9.1 126
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Basin wide percent of average 130 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.7 11.2 131 26.8 14.9 180
DIVIDE PEAK 8800 25.4 20.5 124 24.0 22.1 109
OLD BATTLE 10000 38.6 31.2 124 36.6 29.3 125
SANDSTONE RS 8150 18.0 14.6 123 21.7 18.1 120
WHISKEY PARK 8950 35.9 28.2 127 32.5 27.3 119
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Basin wide percent of average 125 127
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.8 14.3 138 17.2 16.3 106
BLIND BULL SUM 8650 41.7 29.0 144 32.6 24.0 136
EAST RIM DIVIDE 7930 16.7 13.8 121 17.1 15.2 113
ELKHART PARK G.S. 9400 18.4 13.6 135 18.2 16.0 114
GROS VENTRE SUMMIT 8775 20.8 15.4 135 21.1 16.0 132
KENDALL R.S. 7740 24.0 14.6 164 23.8 15.6 153
LOOMIS PARK 8240 -M 17.3 * 26.9 18.9 142
NEW FORK LAKE 8340 14.9 11.1 134 13.2 14.5 91
SNIDER BASIN 8250 23.0 14.6 158 19.1 15.2 126
SPRING CREEK DIVIDE 9000 34.4 27.6 125 32.3 27.5 117
TRIPLE PEAK 8500 37.3 25.3 147 36.9 31.1 119
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Basin wide percent of average 140 123
LOWER GREEN RIVER
HAMS FORK 7840 15.9 12.2 130 14.8 13.4 110
HEWINTA 9500 10.5 11.1 95 13.9 12.6 110
HICKERSON PARK 9150 8.1 6.6 123 9.2 9.1 101
HOLE-IN-ROCK 9150 7.7 6.2 124 9.6 9.1 105
INDIAN CREEK 9425 40.2 28.1 143 31.3 25.9 121
KELLEY R.S. 8180 23.7 16.9 140 26.0 18.8 138
STEEL CREEK PARK 10100 15.9 15.9 100 15.5 12.4 125
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Basin wide percent of average 126 119
UPPER BEAR RIVER
BUG LAKE 7950 33.2 20.6 161 29.4 19.0 155
HAYDEN FORK 9400 17.6 16.2 109 25.0 18.5 135
KELLEY R.S. 8180 23.7 16.9 140 26.0 18.8 138
LILY LAKE 9050 16.5 12.9 128 19.2 14.3 134
MONTE CRISTO 8960 38.1 28.9 132 32.7 24.9 131
SALT RIVER SUMMIT 7600 21.8 14.1 155 23.4 16.9 138
TRIAL LAKE 9960 34.4 24.6 140 34.4 23.3 148
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Basin wide percent of average 138 140
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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.