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 MONDAY: MARCH 31 , 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 30.1 17.7 170 34.7 22.7 153
COTTONWOOD CREEK 7600 31.5 24.3 130 32.5 25.6 127
GRANITE CREEK 6770 29.2 18.7 156 33.0 23.9 138
GRASSY LAKE 7265 46.0 36.1 127 53.1 37.9 140
GROS VENTRE SUMMIT 8775 22.8 15.7 145 21.5 16.2 133
LEWIS LAKE DIVIDE 7860 52.4 35.5 148 45.9 38.5 119
PHILLIPS BENCH 8200 42.7 29.3 146 45.8 30.5 150
SALT RIVER SUMMIT 7600 22.0 14.4 153 23.6 17.2 137
SNAKE RIVER STATION 6920 29.1 18.7 156 36.4 26.6 137
SPRING CREEK DIVIDE 9000 35.3 28.2 125 32.6 28.0 116
THUMB DIVIDE 7980 31.9 17.1 187 -M 21.2 *
TOGWOTEE PASS 9580 34.2 25.1 136 -M 28.9 *
TWO OCEAN PLATEAU 9360 45.0 26.7 169 -M 31.3 *
WILLOW CREEK 8450 41.2 30.4 136 41.3 32.8 126
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Basin wide percent of average 146 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 35.1 23.7 148 30.1 18.1 166
BLACK BEAR 7950 -M 38.3 * -M 41.1 *
CANYON 7940 23.5 13.0 181 26.2 14.3 183
FISHER CREEK 9100 55.7 35.9 155 -M 36.9 *
MADISON PLATEAU 7750 41.6 24.7 168 42.2 26.5 159
NORTHEAST ENTRANCE 7350 12.1 9.2 132 19.3 11.8 164
PARKER PEAK 9400 31.2 21.7 144 -M 15.6 *
SYLVAN LAKE 8420 32.3 22.2 145 32.6 19.2 170
THUMB DIVIDE 7980 31.9 17.1 187 -M 21.2 *
TWO OCEAN PLATEAU 9360 45.0 26.7 169 -M 31.3 *
WHISKEY CREEK 6800 25.5 17.4 147 31.5 22.1 143
WHITE MILL 8700 38.2 25.0 153 -M 28.5 *
WOLVERINE 7650 14.2 11.7 121 15.4 12.7 121
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Basin wide percent of average 156 158
WIND RIVER
BURROUGHS CREEK 8750 23.9 15.0 159 25.7 16.6 155
CHRISTINA LAKE 9980 19.4 15.3 127 23.1 16.7 138
COLD SPRINGS 9630 10.1 8.4 120 11.9 10.5 113
HOBBS PARK 10100 17.1 15.0 114 13.3 14.1 94
LITTLE WARM 9620 18.0 11.5 157 20.0 13.2 152
SOUTH PASS 9040 25.2 16.3 155 24.5 17.0 144
ST. LAWRENCE ALT 8620 8.4 7.6 111 10.6 10.1 105
TOGWOTEE PASS 9580 34.2 25.1 136 -M 28.9 *
TOWNSEND CREEK 8700 9.8 9.8 100 11.8 12.4 95
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Basin wide percent of average 134 127
BIGHORN BASIN
BALD MTN. 9375 22.0 20.4 108 18.3 17.3 106
BEAR TRAP MEADOW 7900 7.3 7.2 101 8.7 8.1 107
BLACKWATER 9780 37.9 22.3 170 28.8 18.0 160
BONE SPRINGS DIV 9350 18.9 16.4 115 16.3 15.0 109
EVENING STAR 9200 41.4 27.1 153 39.6 22.6 175
GRAVE SPRINGS 8550 12.5 -M * 11.1 9.5 117
KIRWIN 9550 14.6 9.9 147 15.8 10.7 148
LOST CREEK 8080 -M 13.6 * -M 11.7 *
MARQUETTE 8760 11.3 8.1 140 11.6 9.4 123
MIDDLE POWDER 7760 17.3 12.1 143 14.9 11.7 127
OWL CREEK 8975 8.2 4.6 178 6.7 6.2 108
POWDER RIVER PASS 9480 9.7 10.8 90 13.3 11.4 117
SHELL CREEK 9580 17.5 14.9 117 14.6 13.0 112
SYLVAN LAKE 8420 32.3 22.2 145 32.6 19.2 170
SYLVAN ROAD 8120 20.5 12.5 164 26.7 16.1 166
TIMBER CREEK 7950 7.4 6.3 117 8.0 6.9 116
YOUNTS PEAK 8350 24.1 17.2 140 -M 16.6 *
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Basin wide percent of average 137 137
SHOSHONE RIVER
BLACKWATER 9780 37.9 22.3 170 28.8 18.0 160
EVENING STAR 9200 41.4 27.1 153 39.6 22.6 175
KIRWIN 9550 14.6 9.9 147 15.8 10.7 148
MARQUETTE 8760 11.3 8.1 140 11.6 9.4 123
SYLVAN LAKE 8420 32.3 22.2 145 32.6 19.2 170
SYLVAN ROAD 8120 20.5 12.5 164 26.7 16.1 166
YOUNTS PEAK 8350 24.1 17.2 140 -M 16.6 *
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Basin wide percent of average 153 162
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 7.2 101 8.7 8.1 107
BONE SPRINGS DIV 9350 18.9 16.4 115 16.3 15.0 109
BURGESS JUNCTION 7880 13.7 11.7 117 13.4 11.4 118
CLOUD PEAK RESERVOIR 9860 17.8 14.8 120 15.0 13.2 114
DOME LAKE 8880 13.1 13.7 96 14.1 13.1 108
GRAVE SPRINGS 8550 12.5 -M * 11.1 9.5 117
HANSEN SAWMILL 8760 7.0 7.1 99 8.4 7.8 108
LOST CREEK 8080 -M 13.6 * -M 11.7 *
MIDDLE POWDER 7760 17.3 12.1 143 14.9 11.7 127
POWDER RIVER PASS 9480 9.7 10.8 90 13.3 11.4 117
SUCKER CREEK 8880 14.5 12.1 120 15.1 13.0 116
TIE CREEK 6870 7.5 -M * 12.4 10.9 114
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Basin wide percent of average 113 114
BELLE FOURCHE
BLIND PARK 6890 9.8 11.0 89 14.6 9.9 147
NORTH RAPID CREEK 6130 9.4 -M * 12.9 -M *
WARREN PEAK 6520 18.3 11.0 166 -M 7.9 *
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Basin wide percent of average 128 147*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.2 24.8 114 30.3 24.4 124
DIVIDE PEAK 8800 25.5 21.1 121 24.1 22.7 106
ELK RIVER 8700 26.2 19.9 132 24.2 19.1 127
JOE WRIGHT 10120 24.4 22.0 111 28.4 24.8 115
NORTH FRENCH CREEK 10100 35.1 25.4 138 27.6 23.4 118
OLD BATTLE 10000 39.1 32.0 122 36.8 30.0 123
SOUTH BRUSH CREEK 8400 13.6 13.3 102 17.3 16.2 107
TOWER 10500 53.4 45.2 118 46.9 36.0 130
WEBBER SPRINGS 9200 30.9 28.1 110 35.1 25.1 140
WILLOW CREEK PASS 9540 17.5 11.9 147 14.3 12.5 114
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Basin wide percent of average 121 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.1 26.2 134 27.0 19.3 140
CASPER MTN. 7900 21.2 16.4 129 20.1 13.9 145
CHRISTINA LAKE 9980 19.4 15.3 127 23.1 16.7 138
DEADMAN HILL 10220 15.8 16.5 96 17.9 16.6 108
LAPRELE CREEK 8320 14.6 10.5 139 14.1 11.7 121
RENO HILL 8400 22.4 14.3 157 19.5 19.1 102
ROACH 9700 22.8 17.3 132 21.2 21.0 101
SAND LAKE 10080 37.1 32.9 113 28.9 20.2 143
SOUTH PASS 9040 25.2 16.3 155 24.5 17.0 144
WINDY PEAK 7840 10.6 8.7 122 11.4 9.4 121
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Basin wide percent of average 129 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.4 11.3 127 27.8 15.2 183
DIVIDE PEAK 8800 25.5 21.1 121 24.1 22.7 106
OLD BATTLE 10000 39.1 32.0 122 36.8 30.0 123
SANDSTONE RS 8150 18.1 14.9 121 21.7 18.5 117
WHISKEY PARK 8950 36.6 28.8 127 32.7 28.0 117
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Basin wide percent of average 124 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 19.4 14.6 133 18.4 16.5 112
BLIND BULL SUM 8650 42.4 29.6 143 32.8 24.5 134
EAST RIM DIVIDE 7930 16.9 14.0 121 17.3 15.4 112
ELKHART PARK G.S. 9400 18.2 13.8 132 18.5 16.2 114
GROS VENTRE SUMMIT 8775 22.8 15.7 145 21.5 16.2 133
KENDALL R.S. 7740 24.3 14.7 165 23.9 15.8 151
LOOMIS PARK 8240 -M 17.5 * 27.4 19.2 143
NEW FORK LAKE 8340 15.4 11.3 136 13.5 14.7 92
SNIDER BASIN 8250 23.6 14.8 159 19.3 15.4 125
SPRING CREEK DIVIDE 9000 35.3 28.2 125 32.6 28.0 116
TRIPLE PEAK 8500 37.2 25.8 144 37.6 31.6 119
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Basin wide percent of average 140 123
LOWER GREEN RIVER
HAMS FORK 7840 15.9 12.3 129 14.8 13.6 109
HEWINTA 9500 10.9 11.4 96 14.0 13.0 108
HICKERSON PARK 9150 8.3 6.8 122 9.3 9.4 99
HOLE-IN-ROCK 9150 6.0 6.4 94 9.7 9.4 103
INDIAN CREEK 9425 40.3 28.8 140 31.6 26.5 119
KELLEY R.S. 8180 24.2 17.2 141 26.1 19.1 137
STEEL CREEK PARK 10100 16.1 16.5 98 15.7 12.7 124
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Basin wide percent of average 122 117
UPPER BEAR RIVER
BUG LAKE 7950 33.2 21.2 157 29.4 19.5 151
HAYDEN FORK 9400 17.2 16.4 105 25.1 19.0 132
KELLEY R.S. 8180 24.2 17.2 141 26.1 19.1 137
LILY LAKE 9050 16.9 13.3 127 19.3 14.7 131
MONTE CRISTO 8960 40.0 29.7 135 32.9 25.5 129
SALT RIVER SUMMIT 7600 22.0 14.4 153 23.6 17.2 137
TRIAL LAKE 9960 34.2 24.9 137 34.4 23.9 144
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Basin wide percent of average 137 137
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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.