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: APRIL 11 , 2011
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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 25.5 17.5 146 27.5 22.6 122
COTTONWOOD CREEK 7670 31.8 24.2 131 39.0 29.2 134
GRAND TARGHEE 9260 52.8 -M * 40.1 -M *
GRANITE CREEK 6770 24.7 17.7 140 26.8 20.8 129
GRASSY LAKE 7265 44.0 37.1 119 45.3 37.9 120
GROS VENTRE SUMMIT 8750 17.3 14.6 118 17.4 13.8 126
GUNSIGHT PASS 9820 21.0 -M * 19.5 -M *
LEWIS LAKE DIVIDE 7850 46.2 36.7 126 -M 38.8 *
PHILLIPS BENCH 8200 37.0 30.4 122 36.7 30.7 120
SALT RIVER SUMMIT 7760 19.5 14.7 133 24.2 19.9 122
SNAKE RIVER STATION 6920 -M 18.3 * 29.4 23.6 125
SPRING CREEK DIVIDE 9000 39.1 28.2 139 35.9 28.0 128
THUMB DIVIDE 7980 25.3 19.1 132 22.8 20.1 113
TOGWOTEE PASS 9580 33.6 26.3 128 34.9 26.3 133
TWO OCEAN PLATEAU 9240 -M 30.0 * -M 29.4 *
WILLOW CREEK 8380 42.0 31.6 133 43.6 34.2 127
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Basin wide percent of average 129 125
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 30.1 25.1 120 27.8 21.4 130
BLACK BEAR 8170 52.3 40.7 129 47.7 42.7 112
CANYON 7870 19.7 14.1 140 21.1 16.3 129
FISHER CREEK 9100 46.2 36.7 126 43.9 38.5 114
MADISON PLATEAU 7750 33.2 26.1 127 34.7 28.4 122
NORTHEAST ENTRANCE 7350 16.1 11.0 146 17.7 13.4 132
PARKER PEAK 9400 33.3 23.1 144 28.8 17.4 166
SYLVAN LAKE 8420 28.3 23.9 118 31.7 22.3 142
THUMB DIVIDE 7980 25.3 19.1 132 22.8 20.1 113
TWO OCEAN PLATEAU 9240 -M 30.0 * -M 29.4 *
WHISKEY CREEK 6800 22.5 17.8 126 25.8 22.3 116
WHITE MILL 8700 32.3 25.6 126 32.4 28.6 113
WOLVERINE 7650 16.8 11.5 146 16.6 13.6 122
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Basin wide percent of average 130 123
WIND RIVER
BURROUGHS CREEK 8750 18.8 15.2 124 19.6 17.3 113
CASTLE CREEK 8400 7.9 -M * 9.5 -M *
COLD SPRINGS 9630 9.9 8.0 124 10.7 11.7 91
DEER PARK 9700 20.5 17.1 120 24.1 23.5 103
HOBBS PARK 10100 17.8 16.4 109 15.7 14.1 111
LITTLE WARM 9370 14.3 12.5 114 14.8 14.4 103
SOUTH PASS 9040 18.3 17.6 104 15.9 19.8 80
ST. LAWRENCE ALT 8620 5.9 7.4 80 9.3 9.8 95
TOGWOTEE PASS 9580 33.6 26.3 128 34.9 26.3 133
TOWNSEND CREEK 8700 9.9 9.6 103 12.8 12.9 99
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Basin wide percent of average 115 105
BIGHORN BASIN
BALD MTN. 9380 26.1 21.3 123 21.1 18.7 113
BEAR TRAP MEADOW 8200 9.4 5.0 188 9.4 9.1 103
BLACKWATER 9780 31.2 26.3 119 29.7 22.1 134
BONE SPRINGS DIV 9350 22.4 17.3 129 18.5 15.8 117
EVENING STAR 9200 36.9 31.6 117 39.0 27.0 144
GRAVE SPRINGS 8550 9.6 10.4 92 9.9 10.9 91
KIRWIN 9550 14.9 12.1 123 15.8 12.1 131
MARQUETTE 8760 5.0 -M * 8.0 10.9 73
MIDDLE POWDER 7760 11.0 13.4 82 11.8 13.4 88
OWL CREEK 8975 7.0 5.6 125 7.5 6.6 114
POWDER RIVER PASS 9480 16.9 11.7 144 19.4 13.4 145
SHELL CREEK 9580 19.3 15.8 122 17.5 14.4 122
SYLVAN LAKE 8420 28.3 23.9 118 31.7 22.3 142
SYLVAN ROAD 7120 18.3 12.8 143 23.6 18.7 126
TIMBER CREEK 7950 6.0 5.8 103 7.2 8.2 88
YOUNTS PEAK 8350 21.2 18.0 118 18.6 17.2 108
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Basin wide percent of average 121 120
SHOSHONE RIVER
BLACKWATER 9780 31.2 26.3 119 29.7 22.1 134
EVENING STAR 9200 36.9 31.6 117 39.0 27.0 144
KIRWIN 9550 14.9 12.1 123 15.8 12.1 131
MARQUETTE 8760 5.0 -M * 8.0 10.9 73
SYLVAN LAKE 8420 28.3 23.9 118 31.7 22.3 142
SYLVAN ROAD 7120 18.3 12.8 143 23.6 18.7 126
YOUNTS PEAK 8350 21.2 18.0 118 18.6 17.2 108
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Basin wide percent of average 121 128
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.4 5.0 188 9.4 9.1 103
BIG GOOSE 7990 9.9 12.0 83 11.6 9.9 117
BONE SPRINGS DIV 9350 22.4 17.3 129 18.5 15.8 117
BURGESS JUNCTION 7880 12.4 12.8 97 13.3 13.2 101
CLOUD PEAK RESERVOIR 9860 18.5 14.8 125 17.0 14.1 121
DOME LAKE 8880 15.6 13.6 115 14.9 14.3 104
GRAVE SPRINGS 8550 9.6 10.4 92 9.9 10.9 91
HANSEN SAWMILL 8360 8.0 6.4 125 9.1 9.0 101
LITTLE GOOSE 8870 11.4 -M * 15.9 -M *
MIDDLE POWDER 7760 11.0 13.4 82 11.8 13.4 88
POWDER RIVER PASS 9480 16.9 11.7 144 19.4 13.4 145
SOLDIER PARK 8720 9.6 -M * 10.4 -M *
SUCKER CREEK 8880 15.0 13.1 115 16.5 14.7 112
TIE CREEK 6870 7.2 5.6 129 11.6 10.9 106
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Basin wide percent of average 115 110
BELLE FOURCHE
BLIND PARK 6890 9.4 8.0 118 17.5 11.9 147
COLE CANYON 5910 7.3 7.2 101 12.7 7.3 174
NORTH RAPID CREEK 6130 7.4 8.9 83 14.8 9.2 161
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Basin wide percent of average 100 158
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 27.3 17.9 153 35.1 21.1 166
COLUMBINE 9160 35.7 25.0 143 37.7 26.7 141
DIVIDE PEAK 8880 26.9 20.7 130 31.7 22.0 144
ELK RIVER 8700 27.2 20.0 136 29.1 20.8 140
JOE WRIGHT 10120 36.0 23.0 157 38.7 26.5 146
NORTH FRENCH CREEK 10130 51.3 31.8 161 -M 26.3 *
OLD BATTLE 10000 46.7 34.1 137 46.4 36.5 127
SAGE CREEK BASIN 7850 22.1 12.0 184 21.2 12.7 167
SOUTH BRUSH CREEK 8440 20.5 13.4 153 24.7 17.6 140
TOWER 10500 59.8 48.6 123 47.5 40.8 116
WEBBER SPRINGS 9250 33.8 26.3 129 39.5 28.3 140
WILLOW CREEK PASS 9540 21.9 13.2 166 19.7 13.8 143
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Basin wide percent of average 143 139
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 34.3 25.8 133 33.1 23.7 140
CASPER MTN. 7900 11.9 16.2 73 15.7 16.0 98
DEADMAN HILL 10220 22.5 17.8 126 23.7 18.2 130
DEER PARK 9700 20.5 17.1 120 24.1 23.5 103
LAPRELE CREEK 8375 13.9 10.7 130 15.6 13.8 113
RENO HILL 8400 16.1 15.6 103 18.9 16.6 114
ROACH 9700 21.8 18.2 120 25.4 19.9 128
SAND LAKE 10050 41.2 34.4 120 -M 25.9 *
SOUTH PASS 9040 18.3 17.6 104 15.9 19.8 80
WINDY PEAK 7900 10.9 8.3 131 14.6 11.4 128
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Basin wide percent of average 116 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 9.5 * 17.4 16.8 104
DIVIDE PEAK 8880 26.9 20.7 130 31.7 22.0 144
OLD BATTLE 10000 46.7 34.1 137 46.4 36.5 127
SANDSTONE RS 8150 20.6 14.0 147 -M 19.8 *
WHISKEY PARK 8950 -M 30.7 * -M 30.4 *
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Basin wide percent of average 137 127
UPPER GREEN RIVER
BIG SANDY OPENING 9080 17.4 15.3 114 17.5 14.2 123
BLIND BULL SUM 8650 38.0 28.9 131 26.0 23.5 111
EAST RIM DIVIDE 7930 17.5 13.8 127 15.4 12.7 121
ELKHART PARK G.S. 9400 15.9 14.0 114 15.6 14.2 110
GROS VENTRE SUMMIT 8750 17.3 14.6 118 17.4 13.8 126
GUNSIGHT PASS 9820 21.0 -M * 19.5 -M *
KENDALL R.S. 7740 15.1 14.0 108 17.3 15.3 113
LOOMIS PARK 8240 23.4 17.4 134 23.6 18.4 128
NEW FORK LAKE 8340 14.1 11.5 123 12.8 12.0 107
POCKET CREEK 9360 14.6 -M * 16.4 -M *
SNIDER BASIN 8060 22.4 15.0 149 21.0 17.1 123
SPRING CREEK DIVIDE 9000 39.1 28.2 139 35.9 28.0 128
TRIPLE PEAK 8500 37.7 25.9 146 37.9 26.3 144
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Basin wide percent of average 130 123
LOWER GREEN RIVER
HAMS FORK 7840 17.3 10.7 162 16.6 13.0 128
HEWINTA 9519 13.8 12.5 110 19.1 15.8 121
HICKERSON PARK 9145 7.9 8.4 94 11.7 8.6 136
HOLE-IN-ROCK 9150 9.6 7.5 128 13.1 8.2 160
INDIAN CREEK 9425 35.1 29.4 119 29.9 27.1 110
KELLEY R.S. 8180 23.6 17.4 136 26.3 21.6 122
STEEL CREEK PARK 10200 19.9 16.9 118 22.5 17.8 126
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Basin wide percent of average 124 124
UPPER BEAR RIVER
BUG LAKE 7950 33.5 21.8 154 32.1 20.4 157
HAYDEN FORK 9212 26.6 16.8 158 32.9 22.5 146
KELLEY R.S. 8180 23.6 17.4 136 26.3 21.6 122
LILY LAKE 9156 24.4 14.6 167 25.1 18.9 133
MONTE CRISTO 8960 42.9 30.6 140 40.5 27.2 149
SALT RIVER SUMMIT 7760 19.5 14.7 133 24.2 19.9 122
TRIAL LAKE 9992 40.4 26.2 154 36.6 26.6 138
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Basin wide percent of average 148 139
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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 1971-2000.
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.