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: JANUARY 30 , 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 12.4 114 16.9 14.6 116
COTTONWOOD CREEK 7670 18.7 14.0 134 24.2 18.4 132
GRAND TARGHEE 9260 33.7 -M * 24.6 -M *
GRANITE CREEK 6770 13.8 12.1 114 16.0 13.5 119
GRASSY LAKE 7265 24.6 22.5 109 27.4 24.6 111
GROS VENTRE SUMMIT 8750 10.2 9.3 110 10.0 8.5 118
GUNSIGHT PASS 9820 11.6 -M * 11.8 -M *
LEWIS LAKE DIVIDE 7850 23.9 22.6 106 24.5 24.5 100
PHILLIPS BENCH 8200 20.8 18.2 114 22.1 19.2 115
SALT RIVER SUMMIT 7760 11.5 9.0 128 15.6 12.4 126
SNAKE RIVER STATION 6920 -M 12.3 * 18.0 15.3 118
SPRING CREEK DIVIDE 9000 24.1 17.1 141 23.6 18.0 131
THUMB DIVIDE 7980 13.9 11.5 121 14.0 12.5 112
TOGWOTEE PASS 9580 19.9 16.6 120 21.2 16.6 128
TWO OCEAN PLATEAU 9240 23.1 18.6 124 19.1 18.2 105
WILLOW CREEK 8380 22.8 19.9 115 28.0 21.5 130
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Basin wide percent of average 118 118
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.1 16.0 107 16.7 13.8 121
BLACK BEAR 8170 29.3 25.2 116 29.0 25.6 113
CANYON 7870 10.8 8.8 123 12.4 10.6 117
FISHER CREEK 9100 26.3 23.4 112 25.4 24.2 105
MADISON PLATEAU 7750 18.5 15.9 116 20.2 17.2 117
NORTHEAST ENTRANCE 7350 8.6 7.5 115 10.7 8.8 122
PARKER PEAK 9400 19.4 14.5 134 17.9 10.9 164
SYLVAN LAKE 8420 16.1 14.8 109 19.3 14.6 132
THUMB DIVIDE 7980 13.9 11.5 121 14.0 12.5 112
TWO OCEAN PLATEAU 9240 23.1 18.6 124 19.1 18.2 105
WHISKEY CREEK 6800 13.2 10.9 121 15.6 13.6 115
WHITE MILL 8700 18.1 15.8 115 18.9 18.0 105
WOLVERINE 7650 11.2 8.6 130 10.1 9.1 111
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Basin wide percent of average 118 116
WIND RIVER
BURROUGHS CREEK 8750 10.0 10.0 100 10.6 11.1 95
CASTLE CREEK 8400 4.3 -M * 4.9 -M *
COLD SPRINGS 9630 5.7 5.9 97 5.7 7.0 81
DEER PARK 9700 14.1 11.6 122 15.3 14.3 107
HOBBS PARK 10100 9.4 9.7 97 8.4 8.1 104
LITTLE WARM 9370 8.0 7.7 104 8.4 9.0 93
SOUTH PASS 9040 11.5 11.2 103 10.2 12.0 85
ST. LAWRENCE ALT 8620 3.6 4.7 77 4.4 5.6 79
TOGWOTEE PASS 9580 19.9 16.6 120 21.2 16.6 128
TOWNSEND CREEK 8700 5.5 5.5 100 7.4 7.2 103
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Basin wide percent of average 106 101
BIGHORN BASIN
BALD MTN. 9380 15.9 13.2 120 13.1 11.6 113
BEAR TRAP MEADOW 8200 5.4 3.5 154 5.8 5.4 107
BLACKWATER 9780 17.8 16.3 109 17.3 14.0 124
BONE SPRINGS DIV 9350 12.8 10.5 122 10.9 9.5 115
EVENING STAR 9200 22.2 19.4 114 24.5 17.3 142
GRAVE SPRINGS 8550 5.0 5.6 89 5.4 6.3 86
KIRWIN 9550 7.8 7.6 103 8.6 7.5 115
MARQUETTE 8760 1.8 5.9 31 4.1 6.1 67
MIDDLE POWDER 7760 6.3 7.1 89 4.0 8.2 49
OWL CREEK 8975 3.1 3.4 91 3.3 3.6 92
POWDER RIVER PASS 9480 10.0 7.1 141 11.6 8.2 141
SHELL CREEK 9580 11.6 9.8 118 10.3 9.2 112
SYLVAN LAKE 8420 16.1 14.8 109 19.3 14.6 132
SYLVAN ROAD 7120 10.8 8.6 126 14.2 13.1 108
TIMBER CREEK 7950 2.5 3.6 69 3.2 4.4 73
YOUNTS PEAK 8350 11.8 11.8 100 10.5 11.2 94
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Basin wide percent of average 109 111
SHOSHONE RIVER
BLACKWATER 9780 17.8 16.3 109 17.3 14.0 124
EVENING STAR 9200 22.2 19.4 114 24.5 17.3 142
KIRWIN 9550 7.8 7.6 103 8.6 7.5 115
MARQUETTE 8760 1.8 5.9 31 4.1 6.1 67
SYLVAN LAKE 8420 16.1 14.8 109 19.3 14.6 132
SYLVAN ROAD 7120 10.8 8.6 126 14.2 13.1 108
YOUNTS PEAK 8350 11.8 11.8 100 10.5 11.2 94
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Basin wide percent of average 105 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.4 3.5 154 5.8 5.4 107
BIG GOOSE 7990 4.9 5.9 83 6.5 5.5 118
BONE SPRINGS DIV 9350 12.8 10.5 122 10.9 9.5 115
BURGESS JUNCTION 7880 6.6 7.3 90 7.7 7.8 99
CLOUD PEAK RESERVOIR 9860 10.1 7.9 128 9.5 8.1 117
DOME LAKE 8880 7.4 7.8 95 8.6 8.6 100
GRAVE SPRINGS 8550 5.0 5.6 89 5.4 6.3 86
HANSEN SAWMILL 8360 4.5 4.2 107 4.8 5.2 92
LITTLE GOOSE 8870 5.8 -M * 9.7 -M *
MIDDLE POWDER 7760 6.3 7.1 89 4.0 8.2 49
POWDER RIVER PASS 9480 10.0 7.1 141 11.6 8.2 141
SOLDIER PARK 8720 4.3 -M * 5.8 -M *
SUCKER CREEK 8880 8.5 7.1 120 9.3 8.7 107
TIE CREEK 6870 4.2 3.9 108 6.4 6.7 96
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Basin wide percent of average 110 103
BELLE FOURCHE
BLIND PARK 6890 5.9 5.2 113 11.7 7.7 152
COLE CANYON 5910 5.4 4.4 123 8.2 4.6 178
NORTH RAPID CREEK 6130 5.8 4.9 118 9.8 6.2 158
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Basin wide percent of average 118 161
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.0 13.0 138 21.3 14.2 150
COLUMBINE 9160 21.8 16.0 136 24.0 16.4 146
DIVIDE PEAK 8880 14.3 12.8 112 18.2 13.5 135
ELK RIVER 8700 15.9 11.9 134 18.1 12.5 145
JOE WRIGHT 10120 18.4 13.6 135 23.9 15.9 150
NORTH FRENCH CREEK 10130 29.1 18.1 161 27.8 16.1 173
OLD BATTLE 10000 28.9 19.7 147 26.8 22.0 122
SAGE CREEK BASIN 7850 12.4 7.4 168 13.0 7.8 167
SOUTH BRUSH CREEK 8440 11.4 7.3 156 14.8 10.7 138
TOWER 10500 37.1 29.5 126 35.5 25.0 142
WEBBER SPRINGS 9250 20.0 15.8 127 24.7 17.8 139
WILLOW CREEK PASS 9540 12.2 7.4 165 12.1 8.2 148
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Basin wide percent of average 139 144
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.4 15.1 135 21.3 14.0 152
CASPER MTN. 7900 7.5 8.9 84 10.0 8.8 114
DEADMAN HILL 10220 9.3 10.4 89 15.0 10.4 144
DEER PARK 9700 14.1 11.6 122 15.3 14.3 107
LAPRELE CREEK 8375 7.9 7.1 111 9.1 8.0 114
RENO HILL 8400 9.2 8.3 111 11.1 9.2 121
ROACH 9700 13.5 10.8 125 16.8 11.5 146
SAND LAKE 10050 24.2 19.6 123 23.0 15.7 146
SOUTH PASS 9040 11.5 11.2 103 10.2 12.0 85
WINDY PEAK 7900 6.2 4.4 141 8.6 6.9 125
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Basin wide percent of average 115 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.6 7.6 47 10.2 9.7 105
DIVIDE PEAK 8880 14.3 12.8 112 18.2 13.5 135
OLD BATTLE 10000 28.9 19.7 147 26.8 22.0 122
SANDSTONE RS 8150 -M 9.4 * -M 12.3 *
WHISKEY PARK 8950 -M 18.1 * 27.0 19.1 141
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Basin wide percent of average 117 128
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.9 9.4 105 10.3 8.9 116
BLIND BULL SUM 8650 20.3 18.1 112 14.8 15.2 97
EAST RIM DIVIDE 7930 9.8 8.3 118 8.9 8.0 111
ELKHART PARK G.S. 9400 8.8 8.6 102 9.0 8.8 102
GROS VENTRE SUMMIT 8750 10.2 9.3 110 10.0 8.5 118
GUNSIGHT PASS 9820 11.6 -M * 11.8 -M *
KENDALL R.S. 7740 8.8 9.6 92 10.5 9.6 109
LOOMIS PARK 8240 12.8 11.0 116 13.8 11.6 119
NEW FORK LAKE 8340 8.3 7.5 111 7.9 7.8 101
POCKET CREEK 9360 7.6 -M * 9.8 -M *
SNIDER BASIN 8060 14.1 9.6 147 14.0 10.9 128
SPRING CREEK DIVIDE 9000 24.1 17.1 141 23.6 18.0 131
TRIPLE PEAK 8500 21.4 16.4 130 22.8 15.9 143
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Basin wide percent of average 119 118
LOWER GREEN RIVER
HAMS FORK 7840 11.2 8.2 137 11.4 8.2 139
HEWINTA 9519 7.4 6.5 114 11.3 9.2 123
HICKERSON PARK 9145 3.9 4.3 91 5.6 5.1 110
HOLE-IN-ROCK 9150 4.5 4.0 113 6.1 4.7 130
INDIAN CREEK 9425 22.1 17.3 128 20.3 16.5 123
KELLEY R.S. 8180 14.5 10.4 139 17.3 13.7 126
STEEL CREEK PARK 10200 11.0 9.2 120 13.9 10.0 139
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Basin wide percent of average 125 127
UPPER BEAR RIVER
BUG LAKE 7950 18.6 12.9 144 20.3 12.7 160
HAYDEN FORK 9212 13.8 9.6 144 20.7 13.4 154
KELLEY R.S. 8180 14.5 10.4 139 17.3 13.7 126
LILY LAKE 9156 12.4 8.0 155 15.1 11.3 134
MONTE CRISTO 8960 22.7 17.7 128 24.8 16.4 151
SALT RIVER SUMMIT 7760 11.5 9.0 128 15.6 12.4 126
TRIAL LAKE 9992 23.8 15.3 156 24.6 15.6 158
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Basin wide percent of average 141 145
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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.