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 THURSDAY: APRIL 14 , 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 24.7 17.0 145 27.7 22.9 121
COTTONWOOD CREEK 7670 32.5 23.9 136 39.3 29.6 133
GRAND TARGHEE 9260 54.1 -M * 40.9 -M *
GRANITE CREEK 6770 24.6 17.2 143 27.0 21.0 129
GRASSY LAKE 7265 44.5 37.1 120 46.1 38.4 120
GROS VENTRE SUMMIT 8750 17.5 14.6 120 17.6 14.0 126
GUNSIGHT PASS 9820 21.4 -M * 20.1 -M *
LEWIS LAKE DIVIDE 7850 47.2 36.7 129 -M 39.2 *
PHILLIPS BENCH 8200 37.1 30.6 121 36.8 31.1 118
SALT RIVER SUMMIT 7760 19.4 14.5 134 24.4 20.2 121
SNAKE RIVER STATION 6920 -M 17.7 * 29.7 23.9 124
SPRING CREEK DIVIDE 9000 39.4 28.4 139 36.0 28.4 127
THUMB DIVIDE 7980 25.4 18.8 135 23.2 20.4 114
TOGWOTEE PASS 9580 34.1 26.6 128 35.4 26.7 133
TWO OCEAN PLATEAU 9240 -M 30.4 * -M 29.8 *
WILLOW CREEK 8380 42.5 31.8 134 46.1 34.7 133
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Basin wide percent of average 131 125
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 30.4 25.4 120 29.1 21.7 134
BLACK BEAR 8170 52.2 40.9 128 50.3 43.2 116
CANYON 7870 19.7 14.0 141 21.2 16.5 128
FISHER CREEK 9100 -M 37.0 * -M 39.0 *
MADISON PLATEAU 7750 34.0 26.2 130 36.1 28.8 125
NORTHEAST ENTRANCE 7350 16.1 10.8 149 17.9 13.6 132
PARKER PEAK 9400 33.8 23.3 145 29.1 17.7 164
SYLVAN LAKE 8420 28.8 24.2 119 32.4 22.6 143
THUMB DIVIDE 7980 25.4 18.8 135 23.2 20.4 114
TWO OCEAN PLATEAU 9240 -M 30.4 * -M 29.8 *
WHISKEY CREEK 6800 23.1 17.8 130 26.2 22.5 116
WHITE MILL 8700 32.6 25.9 126 32.7 29.0 113
WOLVERINE 7650 16.6 11.1 150 16.7 13.8 121
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Basin wide percent of average 131 126
WIND RIVER
BURROUGHS CREEK 8750 19.2 15.1 127 20.0 17.6 114
CASTLE CREEK 8400 8.1 -M * 9.9 -M *
COLD SPRINGS 9630 9.9 7.4 134 10.9 12.0 91
DEER PARK 9700 20.8 16.7 125 24.3 24.0 101
HOBBS PARK 10100 18.2 16.7 109 16.0 14.5 110
LITTLE WARM 9370 14.5 12.5 116 15.0 14.8 101
SOUTH PASS 9040 18.4 17.7 104 16.2 20.2 80
ST. LAWRENCE ALT 8620 6.2 7.4 84 9.6 10.1 95
TOGWOTEE PASS 9580 34.1 26.6 128 35.4 26.7 133
TOWNSEND CREEK 8700 10.0 9.8 102 12.9 13.3 97
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Basin wide percent of average 116 105
BIGHORN BASIN
BALD MTN. 9380 26.9 21.7 124 21.8 19.0 115
BEAR TRAP MEADOW 8200 9.7 4.7 206 9.8 9.3 105
BLACKWATER 9780 31.6 26.7 118 30.1 22.5 134
BONE SPRINGS DIV 9350 23.1 17.6 131 18.9 16.2 117
EVENING STAR 9200 37.4 31.9 117 39.5 27.4 144
GRAVE SPRINGS 8550 10.4 10.5 99 10.6 11.3 94
KIRWIN 9550 15.6 12.3 127 16.5 12.4 133
MARQUETTE 8760 5.5 -M * 8.4 11.3 74
MIDDLE POWDER 7760 11.1 13.9 80 12.0 13.7 88
OWL CREEK 8975 7.9 5.2 152 8.2 6.8 121
POWDER RIVER PASS 9480 17.1 11.8 145 19.9 13.7 145
SHELL CREEK 9580 19.8 16.0 124 17.8 14.7 121
SYLVAN LAKE 8420 28.8 24.2 119 32.4 22.6 143
SYLVAN ROAD 7120 17.7 12.3 144 23.8 18.9 126
TIMBER CREEK 7950 6.4 5.6 114 7.6 8.5 89
YOUNTS PEAK 8350 21.4 18.0 119 18.8 17.4 108
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Basin wide percent of average 123 121
SHOSHONE RIVER
BLACKWATER 9780 31.6 26.7 118 30.1 22.5 134
EVENING STAR 9200 37.4 31.9 117 39.5 27.4 144
KIRWIN 9550 15.6 12.3 127 16.5 12.4 133
MARQUETTE 8760 5.5 -M * 8.4 11.3 74
SYLVAN LAKE 8420 28.8 24.2 119 32.4 22.6 143
SYLVAN ROAD 7120 17.7 12.3 144 23.8 18.9 126
YOUNTS PEAK 8350 21.4 18.0 119 18.8 17.4 108
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Basin wide percent of average 122 128
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.7 4.7 206 9.8 9.3 105
BIG GOOSE 7990 10.2 12.3 83 12.0 10.4 115
BONE SPRINGS DIV 9350 23.1 17.6 131 18.9 16.2 117
BURGESS JUNCTION 7880 12.8 13.2 97 13.7 13.5 101
CLOUD PEAK RESERVOIR 9860 18.8 15.1 125 17.6 14.5 121
DOME LAKE 8880 15.8 13.9 114 15.2 14.6 104
GRAVE SPRINGS 8550 10.4 10.5 99 10.6 11.3 94
HANSEN SAWMILL 8360 8.8 6.1 144 9.9 9.3 106
LITTLE GOOSE 8870 11.7 -M * 16.1 -M *
MIDDLE POWDER 7760 11.1 13.9 80 12.0 13.7 88
POWDER RIVER PASS 9480 17.1 11.8 145 19.9 13.7 145
SOLDIER PARK 8720 10.0 -M * 10.8 -M *
SUCKER CREEK 8880 15.2 13.4 113 16.8 15.1 111
TIE CREEK 6870 7.2 5.1 141 11.9 11.3 105
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Basin wide percent of average 116 110
BELLE FOURCHE
BLIND PARK 6890 8.9 7.7 116 17.8 12.2 146
COLE CANYON 5910 7.0 7.1 99 13.2 7.6 174
NORTH RAPID CREEK 6130 6.6 8.8 75 14.8 9.5 156
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Basin wide percent of average 95 156
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 27.2 17.7 154 35.4 21.4 165
COLUMBINE 9160 37.0 24.8 149 38.1 27.1 141
DIVIDE PEAK 8880 27.5 20.8 132 31.7 22.3 142
ELK RIVER 8700 26.9 19.8 136 29.2 21.1 138
JOE WRIGHT 10120 36.4 23.5 155 38.9 27.0 144
NORTH FRENCH CREEK 10130 51.6 32.4 159 -M 26.7 *
OLD BATTLE 10000 48.6 34.5 141 46.8 37.0 126
SAGE CREEK BASIN 7850 21.7 12.1 179 21.3 12.9 165
SOUTH BRUSH CREEK 8440 20.4 13.3 153 24.7 18.0 137
TOWER 10500 60.9 49.3 124 47.6 41.4 115
WEBBER SPRINGS 9250 34.2 26.2 131 39.6 28.8 138
WILLOW CREEK PASS 9540 22.3 13.5 165 19.8 14.0 141
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Basin wide percent of average 144 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.0 26.3 133 33.6 24.2 139
CASPER MTN. 7900 11.9 16.6 72 15.9 16.5 96
DEADMAN HILL 10220 23.2 18.2 127 24.2 18.6 130
DEER PARK 9700 20.8 16.7 125 24.3 24.0 101
LAPRELE CREEK 8375 13.6 10.4 131 15.7 14.1 111
RENO HILL 8400 15.8 15.8 100 19.0 17.1 111
ROACH 9700 22.2 18.4 121 25.5 20.3 126
SAND LAKE 10050 41.6 34.9 119 -M 26.4 *
SOUTH PASS 9040 18.4 17.7 104 16.2 20.2 80
WINDY PEAK 7900 10.7 8.1 132 14.7 11.7 126
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Basin wide percent of average 116 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 8.9 * 17.5 17.1 102
DIVIDE PEAK 8880 27.5 20.8 132 31.7 22.3 142
OLD BATTLE 10000 48.6 34.5 141 46.8 37.0 126
SANDSTONE RS 8150 20.4 13.6 150 -M 20.0 *
WHISKEY PARK 8950 -M 30.7 * -M 30.9 *
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Basin wide percent of average 140 126
UPPER GREEN RIVER
BIG SANDY OPENING 9080 17.6 15.3 115 17.9 14.4 124
BLIND BULL SUM 8650 38.6 28.9 134 26.2 23.7 111
EAST RIM DIVIDE 7930 17.5 13.9 126 15.5 12.9 120
ELKHART PARK G.S. 9400 16.3 14.0 116 16.0 14.5 110
GROS VENTRE SUMMIT 8750 17.5 14.6 120 17.6 14.0 126
GUNSIGHT PASS 9820 21.4 -M * 20.1 -M *
KENDALL R.S. 7740 14.5 13.7 106 17.5 15.5 113
LOOMIS PARK 8240 23.4 17.2 136 23.8 18.6 128
NEW FORK LAKE 8340 14.3 11.4 125 13.0 12.2 107
POCKET CREEK 9360 15.2 -M * 16.9 -M *
SNIDER BASIN 8060 22.3 15.0 149 21.0 17.4 121
SPRING CREEK DIVIDE 9000 39.4 28.4 139 36.0 28.4 127
TRIPLE PEAK 8500 37.7 25.9 146 38.1 26.6 143
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Basin wide percent of average 131 122
LOWER GREEN RIVER
HAMS FORK 7840 16.7 10.2 164 16.7 13.3 126
HEWINTA 9519 14.5 12.4 117 19.6 16.1 122
HICKERSON PARK 9145 7.9 8.3 95 11.9 8.9 134
HOLE-IN-ROCK 9150 9.7 7.3 133 13.3 8.4 158
INDIAN CREEK 9425 35.4 29.6 120 30.1 27.5 109
KELLEY R.S. 8180 23.8 17.3 138 26.7 22.0 121
STEEL CREEK PARK 10200 20.4 17.2 119 22.9 18.2 126
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Basin wide percent of average 126 123
UPPER BEAR RIVER
BUG LAKE 7950 33.6 21.7 155 32.9 20.7 159
HAYDEN FORK 9212 26.7 16.6 161 33.3 22.9 145
KELLEY R.S. 8180 23.8 17.3 138 26.7 22.0 121
LILY LAKE 9156 24.7 14.5 170 25.3 19.2 132
MONTE CRISTO 8960 43.3 30.6 142 41.2 27.7 149
SALT RIVER SUMMIT 7760 19.4 14.5 134 24.4 20.2 121
TRIAL LAKE 9992 41.3 26.3 157 37.9 27.0 140
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Basin wide percent of average 150 139
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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.