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: JANUARY 31 , 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 14.1 12.6 112 16.8 14.7 114
COTTONWOOD CREEK 7670 18.6 14.1 132 24.2 18.5 131
GRAND TARGHEE 9260 33.6 -M * 24.5 -M *
GRANITE CREEK 6770 13.7 12.2 112 16.0 13.6 118
GRASSY LAKE 7265 24.6 22.7 108 27.5 24.8 111
GROS VENTRE SUMMIT 8750 10.2 9.4 109 10.1 8.6 117
GUNSIGHT PASS 9820 11.6 -M * 11.8 -M *
LEWIS LAKE DIVIDE 7850 23.9 22.8 105 24.5 24.7 99
PHILLIPS BENCH 8200 20.8 18.4 113 22.1 19.4 114
SALT RIVER SUMMIT 7760 11.5 9.1 126 15.6 12.5 125
SNAKE RIVER STATION 6920 -M 12.5 * 18.0 15.4 117
SPRING CREEK DIVIDE 9000 24.1 17.2 140 23.6 18.2 130
THUMB DIVIDE 7980 13.9 11.6 120 14.0 12.6 111
TOGWOTEE PASS 9580 20.0 16.7 120 21.3 16.7 128
TWO OCEAN PLATEAU 9240 23.0 18.8 122 19.2 18.3 105
WILLOW CREEK 8380 22.8 20.1 113 28.0 21.6 130
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Basin wide percent of average 117 117
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.3 16.1 107 16.9 13.9 122
BLACK BEAR 8170 29.3 25.4 115 29.0 25.9 112
CANYON 7870 10.9 8.9 122 12.4 10.7 116
FISHER CREEK 9100 26.5 23.6 112 25.6 24.4 105
MADISON PLATEAU 7750 18.4 16.1 114 20.2 17.3 117
NORTHEAST ENTRANCE 7350 8.7 7.7 113 10.7 8.8 122
PARKER PEAK 9400 19.6 14.7 133 18.1 11.0 165
SYLVAN LAKE 8420 16.1 15.0 107 19.4 14.7 132
THUMB DIVIDE 7980 13.9 11.6 120 14.0 12.6 111
TWO OCEAN PLATEAU 9240 23.0 18.8 122 19.2 18.3 105
WHISKEY CREEK 6800 13.2 11.0 120 15.6 13.7 114
WHITE MILL 8700 18.3 15.9 115 19.1 18.1 106
WOLVERINE 7650 11.4 8.6 133 10.4 9.1 114
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Basin wide percent of average 117 116
WIND RIVER
BURROUGHS CREEK 8750 10.1 10.1 100 10.6 11.2 95
CASTLE CREEK 8400 4.3 -M * 5.0 -M *
COLD SPRINGS 9630 5.8 6.0 97 5.7 7.1 80
DEER PARK 9700 14.1 11.7 121 15.3 14.4 106
HOBBS PARK 10100 9.5 9.8 97 8.6 8.1 106
LITTLE WARM 9370 8.1 7.7 105 8.5 9.0 94
SOUTH PASS 9040 11.6 11.3 103 10.2 12.1 84
ST. LAWRENCE ALT 8620 3.7 4.7 79 4.5 5.7 79
TOGWOTEE PASS 9580 20.0 16.7 120 21.3 16.7 128
TOWNSEND CREEK 8700 5.5 5.6 98 7.4 7.3 101
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Basin wide percent of average 106 101
BIGHORN BASIN
BALD MTN. 9380 16.0 13.4 119 13.4 11.7 115
BEAR TRAP MEADOW 8200 5.5 3.5 157 5.9 5.5 107
BLACKWATER 9780 17.9 16.4 109 17.4 14.1 123
BONE SPRINGS DIV 9350 12.9 10.5 123 11.1 9.5 117
EVENING STAR 9200 22.5 19.5 115 24.9 17.5 142
GRAVE SPRINGS 8550 5.0 5.6 89 5.4 6.4 84
KIRWIN 9550 7.8 7.6 103 8.6 7.6 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.2 74
MIDDLE POWDER 7760 6.4 7.1 90 4.3 8.3 52
OWL CREEK 8975 3.2 3.4 94 3.3 3.7 89
POWDER RIVER PASS 9480 10.0 7.2 139 11.7 8.2 143
SHELL CREEK 9580 11.7 9.9 118 10.4 9.2 113
SYLVAN LAKE 8420 16.1 15.0 107 19.4 14.7 132
SYLVAN ROAD 7120 10.8 8.6 126 14.3 13.2 108
TIMBER CREEK 7950 2.7 3.6 75 3.2 4.5 71
YOUNTS PEAK 8350 11.8 11.9 99 10.5 11.3 93
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Basin wide percent of average 109 111
SHOSHONE RIVER
BLACKWATER 9780 17.9 16.4 109 17.4 14.1 123
EVENING STAR 9200 22.5 19.5 115 24.9 17.5 142
KIRWIN 9550 7.8 7.6 103 8.6 7.6 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.2 74
SYLVAN LAKE 8420 16.1 15.0 107 19.4 14.7 132
SYLVAN ROAD 7120 10.8 8.6 126 14.3 13.2 108
YOUNTS PEAK 8350 11.8 11.9 99 10.5 11.3 93
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Basin wide percent of average 105 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.5 3.5 157 5.9 5.5 107
BIG GOOSE 7990 5.2 5.9 88 6.7 5.6 120
BONE SPRINGS DIV 9350 12.9 10.5 123 11.1 9.5 117
BURGESS JUNCTION 7880 6.7 7.4 91 7.8 7.9 99
CLOUD PEAK RESERVOIR 9860 10.2 8.0 128 9.9 8.2 121
DOME LAKE 8880 7.4 7.9 94 8.6 8.6 100
GRAVE SPRINGS 8550 5.0 5.6 89 5.4 6.4 84
HANSEN SAWMILL 8360 4.7 4.2 112 5.0 5.3 94
LITTLE GOOSE 8870 5.9 -M * 9.8 -M *
MIDDLE POWDER 7760 6.4 7.1 90 4.3 8.3 52
POWDER RIVER PASS 9480 10.0 7.2 139 11.7 8.2 143
SOLDIER PARK 8720 4.5 -M * 5.9 -M *
SUCKER CREEK 8880 8.6 7.1 121 9.4 8.7 108
TIE CREEK 6870 4.3 4.0 108 6.4 6.8 94
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Basin wide percent of average 111 104
BELLE FOURCHE
BLIND PARK 6890 6.0 5.2 115 11.8 7.8 151
COLE CANYON 5910 5.5 4.4 125 8.2 4.7 174
NORTH RAPID CREEK 6130 5.8 4.9 118 9.6 6.3 152
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Basin wide percent of average 119 157
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.0 13.1 137 21.3 14.3 149
COLUMBINE 9160 21.8 16.2 135 24.0 16.5 145
DIVIDE PEAK 8880 14.3 12.9 111 18.1 13.6 133
ELK RIVER 8700 15.9 12.1 131 18.1 12.6 144
JOE WRIGHT 10120 18.5 13.7 135 23.9 16.1 148
NORTH FRENCH CREEK 10130 29.3 18.3 160 27.8 16.2 172
OLD BATTLE 10000 28.9 19.9 145 26.8 22.2 121
SAGE CREEK BASIN 7850 12.4 7.5 165 13.1 7.9 166
SOUTH BRUSH CREEK 8440 11.4 7.3 156 14.8 10.8 137
TOWER 10500 37.2 29.8 125 35.5 25.2 141
WEBBER SPRINGS 9250 20.0 15.9 126 24.7 17.9 138
WILLOW CREEK PASS 9540 12.2 7.5 163 12.1 8.3 146
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Basin wide percent of average 138 143
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.5 15.2 135 21.3 14.1 151
CASPER MTN. 7900 7.6 9.0 84 10.1 8.9 113
DEADMAN HILL 10220 -M 10.5 * -M 10.5 *
DEER PARK 9700 14.1 11.7 121 15.3 14.4 106
LAPRELE CREEK 8375 8.1 7.2 113 9.2 8.1 114
RENO HILL 8400 9.2 8.4 110 11.1 9.3 119
ROACH 9700 13.5 10.9 124 16.8 11.6 145
SAND LAKE 10050 24.3 19.8 123 23.0 15.8 146
SOUTH PASS 9040 11.6 11.3 103 10.2 12.1 84
WINDY PEAK 7900 6.2 4.5 138 8.6 6.9 125
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Basin wide percent of average 117 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.0 7.7 39 10.2 9.8 104
DIVIDE PEAK 8880 14.3 12.9 111 18.1 13.6 133
OLD BATTLE 10000 28.9 19.9 145 26.8 22.2 121
SANDSTONE RS 8150 -M 9.6 * -M 12.4 *
WHISKEY PARK 8950 -M 18.3 * 27.0 19.2 141
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Basin wide percent of average 114 127
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.8 9.4 104 10.3 8.9 116
BLIND BULL SUM 8650 20.3 18.3 111 14.8 15.3 97
EAST RIM DIVIDE 7930 9.8 8.4 117 8.9 8.0 111
ELKHART PARK G.S. 9400 8.7 8.7 100 9.0 8.8 102
GROS VENTRE SUMMIT 8750 10.2 9.4 109 10.1 8.6 117
GUNSIGHT PASS 9820 11.6 -M * 11.8 -M *
KENDALL R.S. 7740 8.8 9.7 91 10.5 9.7 108
LOOMIS PARK 8240 12.8 11.1 115 13.8 11.7 118
NEW FORK LAKE 8340 8.3 7.6 109 7.9 7.8 101
POCKET CREEK 9360 7.6 -M * 9.8 -M *
SNIDER BASIN 8060 14.1 9.7 145 14.0 11.0 127
SPRING CREEK DIVIDE 9000 24.1 17.2 140 23.6 18.2 130
TRIPLE PEAK 8500 21.4 16.5 130 22.8 16.0 143
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Basin wide percent of average 118 118
LOWER GREEN RIVER
HAMS FORK 7840 11.2 8.3 135 11.4 8.3 137
HEWINTA 9519 7.6 6.6 115 11.5 9.2 125
HICKERSON PARK 9145 4.2 4.4 95 6.0 5.2 115
HOLE-IN-ROCK 9150 4.8 4.1 117 6.4 4.7 136
INDIAN CREEK 9425 22.1 17.4 127 20.4 16.7 122
KELLEY R.S. 8180 14.5 10.6 137 17.3 13.8 125
STEEL CREEK PARK 10200 11.1 9.3 119 13.9 10.1 138
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Basin wide percent of average 124 128
UPPER BEAR RIVER
BUG LAKE 7950 18.7 13.0 144 20.3 12.8 159
HAYDEN FORK 9212 13.8 9.7 142 20.6 13.5 153
KELLEY R.S. 8180 14.5 10.6 137 17.3 13.8 125
LILY LAKE 9156 12.4 8.1 153 14.9 11.4 131
MONTE CRISTO 8960 22.8 18.0 127 24.7 16.6 149
SALT RIVER SUMMIT 7760 11.5 9.1 126 15.6 12.5 125
TRIAL LAKE 9992 23.8 15.5 154 24.5 15.7 156
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Basin wide percent of average 140 143
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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.