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: MARCH 28 , 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 29.8 17.5 170 34.5 22.5 153
COTTONWOOD CREEK 7600 30.7 23.8 129 32.3 25.3 128
GRANITE CREEK 6770 28.7 18.4 156 32.9 23.6 139
GRASSY LAKE 7265 44.3 35.5 125 52.9 37.4 141
GROS VENTRE SUMMIT 8775 21.9 15.5 141 21.3 16.0 133
LEWIS LAKE DIVIDE 7860 51.7 35.0 148 46.0 38.0 121
PHILLIPS BENCH 8200 42.3 28.8 147 45.5 30.0 152
SALT RIVER SUMMIT 7600 21.7 14.2 153 23.4 17.0 138
SNAKE RIVER STATION 6920 27.9 18.5 151 36.3 26.2 139
SPRING CREEK DIVIDE 9000 34.7 27.7 125 32.4 27.6 117
THUMB DIVIDE 7980 31.7 16.9 188 -M 21.0 *
TOGWOTEE PASS 9580 34.4 24.7 139 -M 28.4 *
TWO OCEAN PLATEAU 9360 44.8 26.3 170 -M 30.9 *
WILLOW CREEK 8450 41.1 30.0 137 40.5 32.3 125
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Basin wide percent of average 146 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 33.9 23.3 145 30.0 17.8 169
BLACK BEAR 7950 -M 37.7 * -M 40.3 *
CANYON 7940 23.4 12.8 183 26.1 14.1 185
FISHER CREEK 9100 55.6 35.4 157 -M 36.3 *
MADISON PLATEAU 7750 41.3 24.3 170 42.0 26.1 161
NORTHEAST ENTRANCE 7350 12.0 9.1 132 19.2 11.7 164
PARKER PEAK 9400 31.1 21.4 145 -M 15.4 *
SYLVAN LAKE 8420 32.2 21.9 147 32.4 18.9 171
THUMB DIVIDE 7980 31.7 16.9 188 -M 21.0 *
TWO OCEAN PLATEAU 9360 44.8 26.3 170 -M 30.9 *
WHISKEY CREEK 6800 25.2 17.1 147 31.4 21.7 145
WHITE MILL 8700 38.1 24.7 154 -M 28.1 *
WOLVERINE 7650 14.2 11.5 123 15.2 12.6 121
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Basin wide percent of average 157 160
WIND RIVER
BURROUGHS CREEK 8750 23.8 14.8 161 25.7 16.4 157
CHRISTINA LAKE 9980 19.3 15.1 128 23.0 16.3 141
COLD SPRINGS 9630 10.1 8.2 123 11.8 10.3 115
HOBBS PARK 10100 17.0 14.7 116 13.2 13.8 96
LITTLE WARM 9620 17.7 11.3 157 19.6 13.0 151
SOUTH PASS 9040 25.4 16.1 158 24.4 16.7 146
ST. LAWRENCE ALT 8620 9.0 7.5 120 10.6 9.9 107
TOGWOTEE PASS 9580 34.4 24.7 139 -M 28.4 *
TOWNSEND CREEK 8700 9.9 9.7 102 11.6 12.2 95
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Basin wide percent of average 136 129
BIGHORN BASIN
BALD MTN. 9375 21.6 20.1 107 18.0 17.0 106
BEAR TRAP MEADOW 7900 7.3 7.0 104 8.4 8.0 105
BLACKWATER 9780 37.5 21.9 171 28.6 17.7 162
BONE SPRINGS DIV 9350 18.5 16.1 115 16.2 14.7 110
EVENING STAR 9200 40.7 26.6 153 39.5 22.2 178
GRAVE SPRINGS 8550 12.2 -M * 11.0 9.3 118
KIRWIN 9550 14.4 9.8 147 15.7 10.5 150
LOST CREEK 8080 15.2 13.3 114 15.5 11.5 135
MARQUETTE 8760 11.1 7.9 141 11.4 9.2 124
MIDDLE POWDER 7760 17.0 11.9 143 14.5 11.5 126
OWL CREEK 8975 8.0 4.5 178 6.5 6.0 108
POWDER RIVER PASS 9480 12.2 10.7 114 13.3 11.2 119
SHELL CREEK 9580 17.3 14.7 118 14.4 12.8 112
SYLVAN LAKE 8420 32.2 21.9 147 32.4 18.9 171
SYLVAN ROAD 8120 20.1 12.5 161 26.7 15.9 168
TIMBER CREEK 7950 7.2 6.1 118 8.0 6.8 118
YOUNTS PEAK 8350 23.8 17.0 140 -M 16.3 *
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Basin wide percent of average 137 138
SHOSHONE RIVER
BLACKWATER 9780 37.5 21.9 171 28.6 17.7 162
EVENING STAR 9200 40.7 26.6 153 39.5 22.2 178
KIRWIN 9550 14.4 9.8 147 15.7 10.5 150
MARQUETTE 8760 11.1 7.9 141 11.4 9.2 124
SYLVAN LAKE 8420 32.2 21.9 147 32.4 18.9 171
SYLVAN ROAD 8120 20.1 12.5 161 26.7 15.9 168
YOUNTS PEAK 8350 23.8 17.0 140 -M 16.3 *
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Basin wide percent of average 153 163
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 7.0 104 8.4 8.0 105
BONE SPRINGS DIV 9350 18.5 16.1 115 16.2 14.7 110
BURGESS JUNCTION 7880 13.5 11.5 117 12.9 11.1 116
CLOUD PEAK RESERVOIR 9860 17.6 14.5 121 15.0 12.9 116
DOME LAKE 8880 12.7 13.5 94 13.9 12.8 109
GRAVE SPRINGS 8550 12.2 -M * 11.0 9.3 118
HANSEN SAWMILL 8760 7.2 7.0 103 8.1 7.7 105
LOST CREEK 8080 15.2 13.3 114 15.5 11.5 135
MIDDLE POWDER 7760 17.0 11.9 143 14.5 11.5 126
POWDER RIVER PASS 9480 12.2 10.7 114 13.3 11.2 119
SUCKER CREEK 8880 14.4 11.9 121 14.7 12.8 115
TIE CREEK 6870 7.5 -M * 12.0 10.6 113
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Basin wide percent of average 116 116
BELLE FOURCHE
BLIND PARK 6890 9.6 10.9 88 14.4 9.7 148
NORTH RAPID CREEK 6130 9.2 -M * 12.6 -M *
WARREN PEAK 6520 17.7 10.9 162 -M 7.8 *
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Basin wide percent of average 125 148*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.2 24.5 115 29.9 24.0 125
DIVIDE PEAK 8800 25.4 20.7 123 23.8 22.3 107
ELK RIVER 8700 26.0 19.6 133 24.1 18.7 129
JOE WRIGHT 10120 23.7 21.5 110 27.7 24.4 114
NORTH FRENCH CREEK 10100 34.9 25.0 140 27.6 22.9 121
OLD BATTLE 10000 38.8 31.4 124 36.7 29.5 124
SOUTH BRUSH CREEK 8400 13.5 12.9 105 17.1 15.9 108
TOWER 10500 52.8 44.4 119 46.4 35.4 131
WEBBER SPRINGS 9200 30.4 27.5 111 34.9 24.6 142
WILLOW CREEK PASS 9540 17.0 11.6 147 14.1 12.3 115
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Basin wide percent of average 122 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.0 25.5 137 26.4 18.9 140
CASPER MTN. 7900 21.0 16.0 131 19.6 13.6 144
CHRISTINA LAKE 9980 19.3 15.1 128 23.0 16.3 141
DEADMAN HILL 10220 15.6 16.2 96 17.6 16.2 109
LAPRELE CREEK 8320 14.4 10.3 140 14.0 11.5 122
RENO HILL 8400 22.1 13.9 159 19.1 18.6 103
ROACH 9700 23.0 17.0 135 21.1 20.6 102
SAND LAKE 10080 36.5 32.3 113 28.6 19.8 144
SOUTH PASS 9040 25.4 16.1 158 24.4 16.7 146
WINDY PEAK 7840 10.1 8.5 119 11.1 9.2 121
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Basin wide percent of average 130 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.6 11.2 130 27.1 15.0 181
DIVIDE PEAK 8800 25.4 20.7 123 23.8 22.3 107
OLD BATTLE 10000 38.8 31.4 124 36.7 29.5 124
SANDSTONE RS 8150 17.8 14.7 121 21.7 18.2 119
WHISKEY PARK 8950 36.4 28.4 128 32.4 27.5 118
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Basin wide percent of average 125 126
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.9 14.4 131 21.4 16.3 131
BLIND BULL SUM 8650 41.8 29.2 143 32.7 24.1 136
EAST RIM DIVIDE 7930 16.8 13.8 122 17.2 15.3 112
ELKHART PARK G.S. 9400 18.1 13.6 133 18.4 16.0 115
GROS VENTRE SUMMIT 8775 21.9 15.5 141 21.3 16.0 133
KENDALL R.S. 7740 24.1 14.6 165 23.8 15.6 153
LOOMIS PARK 8240 -M 17.3 * 27.3 19.0 144
NEW FORK LAKE 8340 15.0 11.2 134 13.2 14.6 90
SNIDER BASIN 8250 23.3 14.7 159 19.2 15.3 125
SPRING CREEK DIVIDE 9000 34.7 27.7 125 32.4 27.6 117
TRIPLE PEAK 8500 37.1 25.4 146 37.2 31.2 119
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Basin wide percent of average 140 125
LOWER GREEN RIVER
HAMS FORK 7840 15.9 12.2 130 14.6 13.5 108
HEWINTA 9500 10.5 11.1 95 14.0 12.7 110
HICKERSON PARK 9150 8.0 6.6 121 9.2 9.2 100
HOLE-IN-ROCK 9150 7.5 6.3 119 9.7 9.2 105
INDIAN CREEK 9425 39.3 28.3 139 31.3 26.1 120
KELLEY R.S. 8180 23.8 17.0 140 25.8 18.9 137
STEEL CREEK PARK 10100 16.0 16.1 99 15.5 12.5 124
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Basin wide percent of average 124 118
UPPER BEAR RIVER
BUG LAKE 7950 33.4 20.7 161 29.2 19.1 153
HAYDEN FORK 9400 18.1 16.2 112 25.1 18.6 135
KELLEY R.S. 8180 23.8 17.0 140 25.8 18.9 137
LILY LAKE 9050 16.6 13.0 128 19.3 14.4 134
MONTE CRISTO 8960 38.1 29.1 131 32.7 25.1 130
SALT RIVER SUMMIT 7600 21.7 14.2 153 23.4 17.0 138
TRIAL LAKE 9960 34.0 24.7 138 34.4 23.4 147
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Basin wide percent of average 138 139
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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.