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 SUNDAY: MARCH 30 , 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 34.6 22.6 153
COTTONWOOD CREEK 7600 31.0 24.2 128 32.4 25.5 127
GRANITE CREEK 6770 29.1 18.6 156 33.0 23.8 139
GRASSY LAKE 7265 45.4 35.9 126 52.9 37.7 140
GROS VENTRE SUMMIT 8775 22.6 15.6 145 21.4 16.2 132
LEWIS LAKE DIVIDE 7860 51.8 35.4 146 45.9 38.3 120
PHILLIPS BENCH 8200 42.6 29.1 146 45.7 30.3 151
SALT RIVER SUMMIT 7600 21.8 14.4 151 23.5 17.2 137
SNAKE RIVER STATION 6920 28.7 18.7 153 36.4 26.4 138
SPRING CREEK DIVIDE 9000 35.1 28.0 125 32.5 27.8 117
THUMB DIVIDE 7980 31.8 17.0 187 -M 21.1 *
TOGWOTEE PASS 9580 33.7 24.9 135 -M 28.7 *
TWO OCEAN PLATEAU 9360 44.9 26.6 169 -M 31.2 *
WILLOW CREEK 8450 41.7 30.3 138 41.0 32.6 126
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Basin wide percent of average 146 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.1 23.6 128 30.0 18.0 167
BLACK BEAR 7950 -M 38.1 * -M 40.8 *
CANYON 7940 23.3 13.0 179 26.3 14.3 184
FISHER CREEK 9100 55.8 35.7 156 -M 36.7 *
MADISON PLATEAU 7750 41.6 24.6 169 42.0 26.4 159
NORTHEAST ENTRANCE 7350 12.1 9.2 132 19.3 11.8 164
PARKER PEAK 9400 31.2 21.6 144 -M 15.5 *
SYLVAN LAKE 8420 32.3 22.1 146 32.5 19.1 170
THUMB DIVIDE 7980 31.8 17.0 187 -M 21.1 *
TWO OCEAN PLATEAU 9360 44.9 26.6 169 -M 31.2 *
WHISKEY CREEK 6800 25.5 17.3 147 31.6 21.9 144
WHITE MILL 8700 38.2 24.9 153 -M 28.4 *
WOLVERINE 7650 14.0 11.6 121 15.4 12.7 121
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Basin wide percent of average 154 159
WIND RIVER
BURROUGHS CREEK 8750 23.7 14.9 159 25.7 16.5 156
CHRISTINA LAKE 9980 19.4 15.2 128 23.0 16.6 139
COLD SPRINGS 9630 10.0 8.3 120 11.9 10.5 113
HOBBS PARK 10100 17.0 14.9 114 13.3 14.0 95
LITTLE WARM 9620 17.9 11.5 156 19.9 13.1 152
SOUTH PASS 9040 24.5 16.3 150 24.5 16.9 145
ST. LAWRENCE ALT 8620 8.8 7.5 117 10.6 10.1 105
TOGWOTEE PASS 9580 33.7 24.9 135 -M 28.7 *
TOWNSEND CREEK 8700 9.8 9.8 100 11.7 12.3 95
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Basin wide percent of average 134 128
BIGHORN BASIN
BALD MTN. 9375 21.9 20.3 108 18.3 17.2 106
BEAR TRAP MEADOW 7900 7.3 7.1 103 8.4 8.1 104
BLACKWATER 9780 37.6 22.1 170 28.7 17.9 160
BONE SPRINGS DIV 9350 18.6 16.3 114 16.2 14.9 109
EVENING STAR 9200 40.9 26.9 152 39.6 22.5 176
GRAVE SPRINGS 8550 12.4 -M * 11.1 9.5 117
KIRWIN 9550 14.4 9.9 145 15.8 10.7 148
LOST CREEK 8080 15.7 13.5 116 15.7 11.6 135
MARQUETTE 8760 11.1 8.0 139 11.3 9.3 122
MIDDLE POWDER 7760 17.2 12.0 143 14.9 11.6 128
OWL CREEK 8975 8.1 4.5 180 6.6 6.1 108
POWDER RIVER PASS 9480 8.6 10.8 80 13.3 11.4 117
SHELL CREEK 9580 17.4 14.9 117 14.5 12.9 112
SYLVAN LAKE 8420 32.3 22.1 146 32.5 19.1 170
SYLVAN ROAD 8120 20.4 12.5 163 26.8 16.0 168
TIMBER CREEK 7950 7.3 6.2 118 8.0 6.9 116
YOUNTS PEAK 8350 24.0 17.1 140 -M 16.5 *
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Basin wide percent of average 135 137
SHOSHONE RIVER
BLACKWATER 9780 37.6 22.1 170 28.7 17.9 160
EVENING STAR 9200 40.9 26.9 152 39.6 22.5 176
KIRWIN 9550 14.4 9.9 145 15.8 10.7 148
MARQUETTE 8760 11.1 8.0 139 11.3 9.3 122
SYLVAN LAKE 8420 32.3 22.1 146 32.5 19.1 170
SYLVAN ROAD 8120 20.4 12.5 163 26.8 16.0 168
YOUNTS PEAK 8350 24.0 17.1 140 -M 16.5 *
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Basin wide percent of average 152 162
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 7.1 103 8.4 8.1 104
BONE SPRINGS DIV 9350 18.6 16.3 114 16.2 14.9 109
BURGESS JUNCTION 7880 13.5 11.7 115 13.0 11.3 115
CLOUD PEAK RESERVOIR 9860 17.8 14.7 121 15.1 13.1 115
DOME LAKE 8880 12.9 13.6 95 14.2 13.0 109
GRAVE SPRINGS 8550 12.4 -M * 11.1 9.5 117
HANSEN SAWMILL 8760 7.2 7.0 103 8.4 7.8 108
LOST CREEK 8080 15.7 13.5 116 15.7 11.6 135
MIDDLE POWDER 7760 17.2 12.0 143 14.9 11.6 128
POWDER RIVER PASS 9480 8.6 10.8 80 13.3 11.4 117
SUCKER CREEK 8880 14.5 12.0 121 14.9 12.9 116
TIE CREEK 6870 7.5 -M * 12.2 10.8 113
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Basin wide percent of average 112 116
BELLE FOURCHE
BLIND PARK 6890 9.7 11.0 88 14.6 9.8 149
NORTH RAPID CREEK 6130 9.3 -M * 12.7 -M *
WARREN PEAK 6520 18.0 11.0 164 -M 7.9 *
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Basin wide percent of average 126 149*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.1 24.7 114 30.1 24.2 124
DIVIDE PEAK 8800 25.6 21.0 122 23.9 22.5 106
ELK RIVER 8700 26.3 19.8 133 24.0 19.0 126
JOE WRIGHT 10120 24.3 21.8 111 28.4 24.7 115
NORTH FRENCH CREEK 10100 35.0 25.3 138 27.6 23.2 119
OLD BATTLE 10000 39.0 31.8 123 36.7 29.8 123
SOUTH BRUSH CREEK 8400 13.9 13.1 106 17.2 16.1 107
TOWER 10500 53.5 44.9 119 46.9 35.8 131
WEBBER SPRINGS 9200 30.7 27.9 110 35.1 24.9 141
WILLOW CREEK PASS 9540 17.4 11.8 147 14.0 12.4 113
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Basin wide percent of average 121 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.0 26.0 135 26.9 19.1 141
CASPER MTN. 7900 21.3 16.3 131 20.0 13.8 145
CHRISTINA LAKE 9980 19.4 15.2 128 23.0 16.6 139
DEADMAN HILL 10220 15.7 16.4 96 17.8 16.5 108
LAPRELE CREEK 8320 14.9 10.5 142 14.0 11.6 121
RENO HILL 8400 22.3 14.2 157 19.4 18.9 103
ROACH 9700 22.9 17.2 133 21.1 20.9 101
SAND LAKE 10080 36.9 32.7 113 28.8 20.1 143
SOUTH PASS 9040 24.5 16.3 150 24.5 16.9 145
WINDY PEAK 7840 10.5 8.7 121 11.1 9.3 119
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Basin wide percent of average 129 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.5 11.2 129 27.7 15.1 183
DIVIDE PEAK 8800 25.6 21.0 122 23.9 22.5 106
OLD BATTLE 10000 39.0 31.8 123 36.7 29.8 123
SANDSTONE RS 8150 18.0 14.8 122 21.6 18.4 117
WHISKEY PARK 8950 36.5 28.7 127 32.5 27.8 117
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Basin wide percent of average 124 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.9 14.5 130 19.9 16.5 121
BLIND BULL SUM 8650 42.1 29.5 143 32.8 24.4 134
EAST RIM DIVIDE 7930 16.9 13.9 122 17.2 15.4 112
ELKHART PARK G.S. 9400 18.1 13.8 131 18.5 16.2 114
GROS VENTRE SUMMIT 8775 22.6 15.6 145 21.4 16.2 132
KENDALL R.S. 7740 24.3 14.7 165 23.8 15.8 151
LOOMIS PARK 8240 -M 17.5 * 27.3 19.1 143
NEW FORK LAKE 8340 15.1 11.2 135 13.3 14.7 90
SNIDER BASIN 8250 23.4 14.8 158 19.3 15.4 125
SPRING CREEK DIVIDE 9000 35.1 28.0 125 32.5 27.8 117
TRIPLE PEAK 8500 37.0 25.7 144 37.5 31.5 119
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Basin wide percent of average 140 124
LOWER GREEN RIVER
HAMS FORK 7840 16.1 12.3 131 14.7 13.6 108
HEWINTA 9500 10.7 11.3 95 14.0 12.9 109
HICKERSON PARK 9150 8.1 6.8 119 9.2 9.4 98
HOLE-IN-ROCK 9150 6.5 6.4 102 9.6 9.4 102
INDIAN CREEK 9425 39.2 28.7 137 31.5 26.3 120
KELLEY R.S. 8180 24.1 17.1 141 25.9 19.0 136
STEEL CREEK PARK 10100 16.0 16.3 98 15.6 12.6 124
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Basin wide percent of average 122 117
UPPER BEAR RIVER
BUG LAKE 7950 33.3 21.0 159 29.3 19.4 151
HAYDEN FORK 9400 18.0 16.4 110 25.1 18.8 134
KELLEY R.S. 8180 24.1 17.1 141 25.9 19.0 136
LILY LAKE 9050 17.1 13.2 130 19.3 14.6 132
MONTE CRISTO 8960 39.6 29.5 134 32.9 25.4 130
SALT RIVER SUMMIT 7600 21.8 14.4 151 23.5 17.2 137
TRIAL LAKE 9960 34.1 24.8 138 34.5 23.7 146
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Basin wide percent of average 138 138
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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.