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: APRIL 3 , 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 30.3 17.5 173 35.0 23.0 152
COTTONWOOD CREEK 7600 31.5 24.3 130 33.0 25.9 127
GRANITE CREEK 6770 29.3 18.7 157 33.1 24.2 137
GRASSY LAKE 7265 47.0 36.5 129 53.0 38.4 138
GROS VENTRE SUMMIT 8775 22.9 15.8 145 21.3 16.4 130
LEWIS LAKE DIVIDE 7860 52.2 35.9 145 45.8 39.0 117
PHILLIPS BENCH 8200 43.2 29.6 146 46.1 30.8 150
SALT RIVER SUMMIT 7600 21.8 14.4 151 23.7 17.4 136
SNAKE RIVER STATION 6920 29.2 18.8 155 36.6 26.9 136
SPRING CREEK DIVIDE 9000 35.9 28.5 126 32.8 28.3 116
THUMB DIVIDE 7980 32.3 17.2 188 33.4 21.5 155
TOGWOTEE PASS 9580 35.0 25.5 137 34.0 29.2 116
TWO OCEAN PLATEAU 9360 45.3 26.8 169 -M 31.6 *
WILLOW CREEK 8450 39.9 30.7 130 41.9 33.1 127
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Basin wide percent of average 146 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.6 24.0 148 30.4 18.4 165
BLACK BEAR 7950 -M 38.7 * -M 41.6 *
CANYON 7940 23.7 13.2 180 26.4 14.5 182
FISHER CREEK 9100 56.0 36.4 154 -M 37.4 *
MADISON PLATEAU 7750 42.2 24.9 169 42.2 26.9 157
NORTHEAST ENTRANCE 7350 12.0 9.2 130 19.4 12.0 162
PARKER PEAK 9400 31.5 22.0 143 -M 15.9 *
SYLVAN LAKE 8420 32.8 22.5 146 33.1 19.5 170
THUMB DIVIDE 7980 32.3 17.2 188 33.4 21.5 155
TWO OCEAN PLATEAU 9360 45.3 26.8 169 -M 31.6 *
WHISKEY CREEK 6800 25.7 17.6 146 32.0 22.4 143
WHITE MILL 8700 38.2 25.2 152 -M 29.0 *
WOLVERINE 7650 14.1 11.7 121 15.5 13.0 119
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Basin wide percent of average 155 157
WIND RIVER
BURROUGHS CREEK 8750 23.9 15.0 159 25.8 16.9 153
CHRISTINA LAKE 9980 20.1 15.6 129 23.1 17.0 136
COLD SPRINGS 9630 9.8 8.4 117 12.2 10.8 113
HOBBS PARK 10100 17.6 15.3 115 14.0 14.4 97
LITTLE WARM 9620 18.0 11.9 151 20.1 13.5 149
SOUTH PASS 9040 25.2 16.6 152 25.3 17.3 146
ST. LAWRENCE ALT 8620 8.7 7.5 116 10.9 10.4 105
TOGWOTEE PASS 9580 35.0 25.5 137 34.0 29.2 116
TOWNSEND CREEK 8700 10.3 10.0 103 12.4 12.7 98
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Basin wide percent of average 134 125
BIGHORN BASIN
BALD MTN. 9375 22.6 20.8 109 18.9 17.6 107
BEAR TRAP MEADOW 7900 6.9 7.2 96 8.8 8.4 105
BLACKWATER 9780 38.1 22.7 168 29.0 18.3 158
BONE SPRINGS DIV 9350 19.4 16.7 116 17.0 15.3 111
EVENING STAR 9200 41.7 27.5 152 39.9 22.9 174
GRAVE SPRINGS 8550 12.7 -M * 11.3 9.8 115
KIRWIN 9550 14.7 10.2 144 16.0 11.0 145
LOST CREEK 8080 15.8 13.9 114 15.9 12.0 133
MARQUETTE 8760 11.4 8.2 139 11.6 9.8 118
MIDDLE POWDER 7760 17.4 12.4 140 15.1 12.0 126
OWL CREEK 8975 8.4 4.6 183 6.7 6.3 106
POWDER RIVER PASS 9480 7.5 11.0 68 13.6 11.7 116
SHELL CREEK 9580 18.2 15.2 120 15.1 13.3 114
SYLVAN LAKE 8420 32.8 22.5 146 33.1 19.5 170
SYLVAN ROAD 8120 20.9 12.3 170 27.0 16.4 165
TIMBER CREEK 7950 7.2 6.3 114 8.2 7.2 114
YOUNTS PEAK 8350 24.2 17.4 139 -M 16.9 *
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Basin wide percent of average 134 136
SHOSHONE RIVER
BLACKWATER 9780 38.1 22.7 168 29.0 18.3 158
EVENING STAR 9200 41.7 27.5 152 39.9 22.9 174
KIRWIN 9550 14.7 10.2 144 16.0 11.0 145
MARQUETTE 8760 11.4 8.2 139 11.6 9.8 118
SYLVAN LAKE 8420 32.8 22.5 146 33.1 19.5 170
SYLVAN ROAD 8120 20.9 12.3 170 27.0 16.4 165
YOUNTS PEAK 8350 24.2 17.4 139 -M 16.9 *
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Basin wide percent of average 152 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.9 7.2 96 8.8 8.4 105
BONE SPRINGS DIV 9350 19.4 16.7 116 17.0 15.3 111
BURGESS JUNCTION 7880 14.2 12.0 118 13.7 11.7 117
CLOUD PEAK RESERVOIR 9860 18.3 15.2 120 15.4 13.6 113
DOME LAKE 8880 13.6 13.9 98 14.6 13.4 109
GRAVE SPRINGS 8550 12.7 -M * 11.3 9.8 115
HANSEN SAWMILL 8760 7.3 7.2 101 8.5 8.1 105
LOST CREEK 8080 15.8 13.9 114 15.9 12.0 133
MIDDLE POWDER 7760 17.4 12.4 140 15.1 12.0 126
POWDER RIVER PASS 9480 7.5 11.0 68 13.6 11.7 116
SUCKER CREEK 8880 15.2 12.4 123 15.7 13.3 118
TIE CREEK 6870 -M -M * -M 11.2 *
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Basin wide percent of average 111 116
BELLE FOURCHE
BLIND PARK 6890 9.4 11.2 84 14.6 10.3 142
NORTH RAPID CREEK 6130 9.4 -M * 12.8 -M *
WARREN PEAK 6520 17.8 11.2 159 -M 8.2 *
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Basin wide percent of average 121 142*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.6 24.8 115 31.2 24.7 126
DIVIDE PEAK 8800 26.7 21.4 125 25.3 23.1 110
ELK RIVER 8700 26.8 20.1 133 24.9 19.4 128
JOE WRIGHT 10120 25.0 22.4 112 29.3 25.4 115
NORTH FRENCH CREEK 10100 35.7 26.0 137 27.6 23.8 116
OLD BATTLE 10000 40.9 32.7 125 38.9 30.6 127
SOUTH BRUSH CREEK 8400 13.7 13.3 103 17.8 16.6 107
TOWER 10500 54.6 45.9 119 47.6 36.7 130
WEBBER SPRINGS 9200 31.9 28.3 113 36.5 25.6 143
WILLOW CREEK PASS 9540 18.8 12.2 154 15.3 12.8 120
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Basin wide percent of average 123 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 36.0 26.8 134 27.2 19.7 138
CASPER MTN. 7900 22.1 16.9 131 20.7 14.3 145
CHRISTINA LAKE 9980 20.1 15.6 129 23.1 17.0 136
DEADMAN HILL 10220 16.7 16.8 99 18.6 17.0 109
LAPRELE CREEK 8320 14.8 10.5 141 14.9 12.0 124
RENO HILL 8400 23.4 14.6 160 20.4 19.4 105
ROACH 9700 22.9 17.5 131 21.9 21.4 102
SAND LAKE 10080 38.5 33.5 115 30.0 20.6 146
SOUTH PASS 9040 25.2 16.6 152 25.3 17.3 146
WINDY PEAK 7840 10.6 8.9 119 11.5 9.7 119
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Basin wide percent of average 130 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.2 11.2 127 28.5 15.5 184
DIVIDE PEAK 8800 26.7 21.4 125 25.3 23.1 110
OLD BATTLE 10000 40.9 32.7 125 38.9 30.6 127
SANDSTONE RS 8150 18.2 15.0 121 22.3 18.9 118
WHISKEY PARK 8950 38.0 29.2 130 33.2 28.6 116
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Basin wide percent of average 126 127
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.2 14.8 130 21.9 16.7 131
BLIND BULL SUM 8650 42.7 30.0 142 32.9 24.8 133
EAST RIM DIVIDE 7930 16.9 14.1 120 17.3 15.6 111
ELKHART PARK G.S. 9400 18.2 14.1 129 18.7 16.4 114
GROS VENTRE SUMMIT 8775 22.9 15.8 145 21.3 16.4 130
KENDALL R.S. 7740 24.3 14.5 168 24.0 16.0 150
LOOMIS PARK 8240 -M 17.5 * 27.5 19.4 142
NEW FORK LAKE 8340 15.5 11.2 138 13.4 14.9 90
SNIDER BASIN 8250 23.6 15.0 157 19.4 15.6 124
SPRING CREEK DIVIDE 9000 35.9 28.5 126 32.8 28.3 116
TRIPLE PEAK 8500 36.8 26.0 142 37.7 31.9 118
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Basin wide percent of average 139 124
LOWER GREEN RIVER
HAMS FORK 7840 16.1 11.4 141 14.8 13.8 107
HEWINTA 9500 11.6 11.1 105 14.4 13.3 108
HICKERSON PARK 9150 9.7 6.9 141 9.7 9.7 100
HOLE-IN-ROCK 9150 6.3 6.5 97 10.3 9.7 106
INDIAN CREEK 9425 39.5 29.2 135 31.7 26.8 118
KELLEY R.S. 8180 24.4 17.3 141 26.1 19.3 135
STEEL CREEK PARK 10100 16.5 16.8 98 16.1 13.0 124
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Basin wide percent of average 125 117
UPPER BEAR RIVER
BUG LAKE 7950 33.4 21.1 158 29.6 19.8 149
HAYDEN FORK 9400 17.8 15.7 113 25.7 19.4 132
KELLEY R.S. 8180 24.4 17.3 141 26.1 19.3 135
LILY LAKE 9050 17.4 13.3 131 19.7 15.0 131
MONTE CRISTO 8960 41.1 29.8 138 33.6 26.0 129
SALT RIVER SUMMIT 7600 21.8 14.4 151 23.7 17.4 136
TRIAL LAKE 9960 34.3 25.1 137 34.8 24.3 143
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Basin wide percent of average 139 137
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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.