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: APRIL 10 , 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 17.6 145 27.4 22.5 122
COTTONWOOD CREEK 7670 31.6 24.3 130 38.7 29.0 133
GRAND TARGHEE 9260 52.6 -M * 39.8 -M *
GRANITE CREEK 6770 24.7 17.8 139 26.7 20.7 129
GRASSY LAKE 7265 43.9 37.1 118 45.2 37.8 120
GROS VENTRE SUMMIT 8750 17.2 14.6 118 17.3 13.7 126
GUNSIGHT PASS 9820 20.9 -M * 19.5 -M *
LEWIS LAKE DIVIDE 7850 46.0 36.6 126 -M 38.6 *
PHILLIPS BENCH 8200 36.9 30.3 122 36.6 30.6 120
SALT RIVER SUMMIT 7760 19.4 14.8 131 24.0 19.9 121
SNAKE RIVER STATION 6920 -M 18.5 * 29.3 23.5 125
SPRING CREEK DIVIDE 9000 38.8 28.1 138 35.6 27.9 128
THUMB DIVIDE 7980 25.3 19.2 132 22.8 20.0 114
TOGWOTEE PASS 9580 33.5 26.2 128 34.7 26.1 133
TWO OCEAN PLATEAU 9240 -M 29.9 * -M 29.2 *
WILLOW CREEK 8380 41.6 31.6 132 43.5 34.1 128
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Basin wide percent of average 129 125
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 30.1 24.9 121 27.8 21.3 131
BLACK BEAR 8170 52.3 40.6 129 -M 42.5 *
CANYON 7870 19.7 14.1 140 21.1 16.2 130
FISHER CREEK 9100 46.2 36.6 126 -M 38.3 *
MADISON PLATEAU 7750 33.2 26.0 128 34.7 28.3 123
NORTHEAST ENTRANCE 7350 16.1 11.0 146 17.7 13.4 132
PARKER PEAK 9400 33.3 23.0 145 -M 17.3 *
SYLVAN LAKE 8420 28.2 23.8 118 31.6 22.2 142
THUMB DIVIDE 7980 25.3 19.2 132 22.8 20.0 114
TWO OCEAN PLATEAU 9240 -M 29.9 * -M 29.2 *
WHISKEY CREEK 6800 22.5 17.8 126 25.8 22.2 116
WHITE MILL 8700 32.4 25.5 127 32.4 28.5 114
WOLVERINE 7650 16.9 11.6 146 16.6 13.5 123
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Basin wide percent of average 130 124
WIND RIVER
BURROUGHS CREEK 8750 18.9 15.1 125 19.6 17.2 114
CASTLE CREEK 8400 7.8 -M * 9.4 -M *
COLD SPRINGS 9630 9.8 8.2 120 10.3 11.6 89
DEER PARK 9700 20.3 17.3 117 23.8 23.4 102
HOBBS PARK 10100 17.4 16.2 107 15.3 14.0 109
LITTLE WARM 9370 14.3 12.4 115 14.7 14.3 103
SOUTH PASS 9040 18.2 17.5 104 15.6 19.7 79
ST. LAWRENCE ALT 8620 5.9 7.5 79 9.2 9.7 95
TOGWOTEE PASS 9580 33.5 26.2 128 34.7 26.1 133
TOWNSEND CREEK 8700 9.8 9.6 102 12.4 12.7 98
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Basin wide percent of average 114 105
BIGHORN BASIN
BALD MTN. 9380 26.0 21.1 123 21.0 18.5 114
BEAR TRAP MEADOW 8200 9.4 5.0 188 9.2 9.0 102
BLACKWATER 9780 31.2 26.1 120 29.7 21.9 136
BONE SPRINGS DIV 9350 22.0 17.2 128 18.0 15.7 115
EVENING STAR 9200 36.9 31.6 117 -M 26.8 *
GRAVE SPRINGS 8550 9.5 10.3 92 9.8 10.7 92
KIRWIN 9550 14.8 12.1 122 15.8 12.1 131
MARQUETTE 8760 5.0 -M * 7.8 10.8 72
MIDDLE POWDER 7760 10.8 13.2 82 11.7 13.3 88
OWL CREEK 8975 6.9 5.6 123 7.2 6.5 111
POWDER RIVER PASS 9480 16.7 11.6 144 19.2 13.3 144
SHELL CREEK 9580 19.1 15.7 122 17.2 14.3 120
SYLVAN LAKE 8420 28.2 23.8 118 31.6 22.2 142
SYLVAN ROAD 7120 18.3 12.7 144 23.6 18.6 127
TIMBER CREEK 7950 5.9 5.8 102 7.0 8.1 86
YOUNTS PEAK 8350 21.2 17.9 118 18.6 17.1 109
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Basin wide percent of average 121 117
SHOSHONE RIVER
BLACKWATER 9780 31.2 26.1 120 29.7 21.9 136
EVENING STAR 9200 36.9 31.6 117 -M 26.8 *
KIRWIN 9550 14.8 12.1 122 15.8 12.1 131
MARQUETTE 8760 5.0 -M * 7.8 10.8 72
SYLVAN LAKE 8420 28.2 23.8 118 31.6 22.2 142
SYLVAN ROAD 7120 18.3 12.7 144 23.6 18.6 127
YOUNTS PEAK 8350 21.2 17.9 118 18.6 17.1 109
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Basin wide percent of average 121 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.4 5.0 188 9.2 9.0 102
BIG GOOSE 7990 9.6 11.9 81 11.3 9.8 115
BONE SPRINGS DIV 9350 22.0 17.2 128 18.0 15.7 115
BURGESS JUNCTION 7880 12.2 12.7 96 13.1 13.1 100
CLOUD PEAK RESERVOIR 9860 18.4 14.6 126 16.9 14.0 121
DOME LAKE 8880 15.3 13.4 114 14.5 14.2 102
GRAVE SPRINGS 8550 9.5 10.3 92 9.8 10.7 92
HANSEN SAWMILL 8360 7.9 6.4 123 8.9 8.9 100
LITTLE GOOSE 8870 10.9 -M * 15.4 -M *
MIDDLE POWDER 7760 10.8 13.2 82 11.7 13.3 88
POWDER RIVER PASS 9480 16.7 11.6 144 19.2 13.3 144
SOLDIER PARK 8720 9.5 -M * 10.3 -M *
SUCKER CREEK 8880 14.6 12.9 113 16.1 14.6 110
TIE CREEK 6870 7.1 5.8 122 11.4 10.8 106
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Basin wide percent of average 114 109
BELLE FOURCHE
BLIND PARK 6890 9.4 7.9 119 17.5 11.8 148
COLE CANYON 5910 7.4 7.2 103 12.7 7.2 176
NORTH RAPID CREEK 6130 7.6 8.9 85 14.8 9.1 163
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Basin wide percent of average 102 160
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 26.6 17.9 149 34.5 21.0 164
COLUMBINE 9160 35.5 25.0 142 37.0 26.5 140
DIVIDE PEAK 8880 25.9 20.7 125 30.6 21.8 140
ELK RIVER 8700 26.4 20.1 131 28.6 20.7 138
JOE WRIGHT 10120 35.8 22.9 156 38.3 26.4 145
NORTH FRENCH CREEK 10130 50.3 31.6 159 -M 26.1 *
OLD BATTLE 10000 46.6 33.9 137 46.4 36.3 128
SAGE CREEK BASIN 7850 21.6 12.0 180 20.6 12.7 162
SOUTH BRUSH CREEK 8440 20.1 13.4 150 24.1 17.5 138
TOWER 10500 59.3 48.3 123 47.5 40.5 117
WEBBER SPRINGS 9250 33.0 26.3 125 38.5 28.2 137
WILLOW CREEK PASS 9540 21.7 13.1 166 19.6 13.7 143
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Basin wide percent of average 141 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 34.1 25.6 133 32.7 23.6 139
CASPER MTN. 7900 11.7 16.0 73 15.5 15.8 98
DEADMAN HILL 10220 22.3 17.7 126 23.6 18.1 130
DEER PARK 9700 20.3 17.3 117 23.8 23.4 102
LAPRELE CREEK 8375 14.0 10.8 130 15.6 13.6 115
RENO HILL 8400 15.9 15.5 103 18.8 16.5 114
ROACH 9700 21.6 18.2 119 25.1 19.8 127
SAND LAKE 10050 40.6 34.2 119 -M 25.7 *
SOUTH PASS 9040 18.2 17.5 104 15.6 19.7 79
WINDY PEAK 7900 10.9 8.4 130 14.6 11.3 129
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Basin wide percent of average 116 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 9.7 * 16.6 16.8 99
DIVIDE PEAK 8880 25.9 20.7 125 30.6 21.8 140
OLD BATTLE 10000 46.6 33.9 137 46.4 36.3 128
SANDSTONE RS 8150 19.6 14.1 139 -M 19.7 *
WHISKEY PARK 8950 -M 30.7 * 43.7 30.2 145
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Basin wide percent of average 134 131
UPPER GREEN RIVER
BIG SANDY OPENING 9080 17.5 15.2 115 17.5 14.1 124
BLIND BULL SUM 8650 37.9 28.9 131 26.0 23.4 111
EAST RIM DIVIDE 7930 17.4 13.8 126 15.3 12.7 120
ELKHART PARK G.S. 9400 15.9 14.0 114 15.6 14.2 110
GROS VENTRE SUMMIT 8750 17.2 14.6 118 17.3 13.7 126
GUNSIGHT PASS 9820 20.9 -M * 19.5 -M *
KENDALL R.S. 7740 15.1 14.1 107 17.3 15.2 114
LOOMIS PARK 8240 23.3 17.4 134 23.5 18.3 128
NEW FORK LAKE 8340 14.1 11.5 123 12.7 12.0 106
POCKET CREEK 9360 14.7 -M * 16.5 -M *
SNIDER BASIN 8060 22.3 15.0 149 20.9 17.1 122
SPRING CREEK DIVIDE 9000 38.8 28.1 138 35.6 27.9 128
TRIPLE PEAK 8500 37.5 25.8 145 37.7 26.1 144
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Basin wide percent of average 130 123
LOWER GREEN RIVER
HAMS FORK 7840 17.3 10.8 160 16.4 13.0 126
HEWINTA 9519 13.7 12.5 110 19.1 15.6 122
HICKERSON PARK 9145 7.9 8.4 94 11.7 8.6 136
HOLE-IN-ROCK 9150 9.6 7.5 128 13.1 8.1 162
INDIAN CREEK 9425 34.7 29.3 118 29.7 27.0 110
KELLEY R.S. 8180 23.5 17.4 135 26.2 21.5 122
STEEL CREEK PARK 10200 19.8 16.8 118 22.4 17.6 127
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Basin wide percent of average 123 124
UPPER BEAR RIVER
BUG LAKE 7950 33.4 21.8 153 31.3 20.3 154
HAYDEN FORK 9212 26.3 16.8 157 32.6 22.4 146
KELLEY R.S. 8180 23.5 17.4 135 26.2 21.5 122
LILY LAKE 9156 24.3 14.6 166 24.8 18.8 132
MONTE CRISTO 8960 42.8 30.6 140 40.4 27.0 150
SALT RIVER SUMMIT 7760 19.4 14.8 131 24.0 19.9 121
TRIAL LAKE 9992 40.2 26.1 154 36.5 26.4 138
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Basin wide percent of average 148 138
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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.