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: JANUARY 13 , 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 10.9 10.0 109 14.0 12.2 115
COTTONWOOD CREEK 7670 15.1 11.5 131 19.6 15.8 124
GRAND TARGHEE 9260 26.6 -M * 19.3 -M *
GRANITE CREEK 6770 11.1 9.5 117 13.5 11.3 119
GRASSY LAKE 7265 18.6 17.9 104 21.9 20.7 106
GROS VENTRE SUMMIT 8750 8.9 8.0 111 9.0 7.3 123
GUNSIGHT PASS 9820 9.7 -M * 10.0 -M *
LEWIS LAKE DIVIDE 7850 19.7 17.9 110 21.2 20.6 103
PHILLIPS BENCH 8200 17.4 15.0 116 18.9 16.0 118
SALT RIVER SUMMIT 7760 8.6 6.8 126 12.6 10.6 119
SNAKE RIVER STATION 6920 8.1 9.6 84 14.9 12.9 116
SPRING CREEK DIVIDE 9000 17.0 14.4 118 17.6 15.4 114
THUMB DIVIDE 7980 12.4 9.2 135 12.7 10.7 119
TOGWOTEE PASS 9580 15.8 13.7 115 17.1 14.0 122
TWO OCEAN PLATEAU 9240 19.9 15.6 128 16.0 15.5 103
WILLOW CREEK 8380 17.2 16.7 103 22.6 18.2 124
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Basin wide percent of average 114 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 13.4 13.6 99 13.2 11.6 114
BLACK BEAR 8170 24.7 20.8 119 24.9 21.1 118
CANYON 7870 9.0 7.4 122 10.6 9.0 118
FISHER CREEK 9100 20.5 19.6 105 20.3 20.3 100
MADISON PLATEAU 7750 15.9 13.4 119 17.6 14.4 122
NORTHEAST ENTRANCE 7350 6.5 6.2 105 8.5 7.4 115
PARKER PEAK 9400 15.9 12.4 128 15.4 9.3 166
SYLVAN LAKE 8420 13.0 12.5 104 16.2 12.5 130
THUMB DIVIDE 7980 12.4 9.2 135 12.7 10.7 119
TWO OCEAN PLATEAU 9240 19.9 15.6 128 16.0 15.5 103
WHISKEY CREEK 6800 10.9 9.0 121 13.4 11.6 116
WHITE MILL 8700 14.1 13.3 106 15.1 15.0 101
WOLVERINE 7650 8.4 7.0 120 8.2 7.9 104
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Basin wide percent of average 115 116
WIND RIVER
BURROUGHS CREEK 8750 8.2 8.4 98 8.7 9.4 93
CASTLE CREEK 8400 3.8 -M * 4.6 -M *
COLD SPRINGS 9630 5.2 5.2 100 5.4 6.3 86
DEER PARK 9700 13.0 9.1 143 13.9 12.4 112
HOBBS PARK 10100 8.9 8.6 103 8.1 7.1 114
LITTLE WARM 9370 6.7 6.5 103 7.0 7.8 90
SOUTH PASS 9040 10.6 9.5 112 9.5 10.3 92
ST. LAWRENCE ALT 8620 3.6 4.2 86 4.4 5.0 88
TOGWOTEE PASS 9580 15.8 13.7 115 17.1 14.0 122
TOWNSEND CREEK 8700 5.1 4.9 104 7.0 6.5 108
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Basin wide percent of average 110 103
BIGHORN BASIN
BALD MTN. 9380 11.7 11.4 103 10.5 9.9 106
BEAR TRAP MEADOW 8200 4.2 2.9 145 5.2 4.9 106
BLACKWATER 9780 15.0 13.8 109 14.5 12.1 120
BONE SPRINGS DIV 9350 9.2 9.0 102 8.3 8.2 101
EVENING STAR 9200 17.2 16.4 105 18.9 15.0 126
GRAVE SPRINGS 8550 4.0 4.8 83 4.5 5.6 80
KIRWIN 9550 7.0 6.8 103 7.6 6.7 113
MARQUETTE 8760 2.0 5.3 38 4.3 5.7 75
MIDDLE POWDER 7760 5.6 6.2 90 3.8 7.4 51
OWL CREEK 8975 2.8 2.9 97 3.2 3.2 100
POWDER RIVER PASS 9480 7.1 6.1 116 8.2 6.9 119
SHELL CREEK 9580 8.2 8.4 98 7.3 7.7 95
SYLVAN LAKE 8420 13.0 12.5 104 16.2 12.5 130
SYLVAN ROAD 7120 8.5 7.4 115 11.7 11.5 102
TIMBER CREEK 7950 2.5 3.3 76 2.9 4.0 73
YOUNTS PEAK 8350 9.8 9.6 102 9.0 9.6 94
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Basin wide percent of average 101 104
SHOSHONE RIVER
BLACKWATER 9780 15.0 13.8 109 14.5 12.1 120
EVENING STAR 9200 17.2 16.4 105 18.9 15.0 126
KIRWIN 9550 7.0 6.8 103 7.6 6.7 113
MARQUETTE 8760 2.0 5.3 38 4.3 5.7 75
SYLVAN LAKE 8420 13.0 12.5 104 16.2 12.5 130
SYLVAN ROAD 7120 8.5 7.4 115 11.7 11.5 102
YOUNTS PEAK 8350 9.8 9.6 102 9.0 9.6 94
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Basin wide percent of average 101 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.2 2.9 145 5.2 4.9 106
BIG GOOSE 7990 3.6 5.1 71 5.2 4.8 108
BONE SPRINGS DIV 9350 9.2 9.0 102 8.3 8.2 101
BURGESS JUNCTION 7880 4.4 6.2 71 5.7 6.8 84
CLOUD PEAK RESERVOIR 9860 7.8 6.7 116 8.2 7.1 115
DOME LAKE 8880 4.7 6.8 69 6.8 7.6 89
GRAVE SPRINGS 8550 4.0 4.8 83 4.5 5.6 80
HANSEN SAWMILL 8360 3.9 3.6 108 4.2 4.7 89
LITTLE GOOSE 8870 4.3 -M * 8.0 -M *
MIDDLE POWDER 7760 5.6 6.2 90 3.8 7.4 51
POWDER RIVER PASS 9480 7.1 6.1 116 8.2 6.9 119
SOLDIER PARK 8720 3.5 -M * 5.0 -M *
SUCKER CREEK 8880 6.1 6.0 102 6.8 7.5 91
TIE CREEK 6870 2.8 3.4 82 4.7 5.8 81
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Basin wide percent of average 95 93
BELLE FOURCHE
BLIND PARK 6890 3.6 4.4 82 9.1 6.9 132
COLE CANYON 5910 3.9 3.7 105 6.5 4.2 155
NORTH RAPID CREEK 6130 4.1 3.9 105 8.0 5.7 140
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Basin wide percent of average 97 140
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 14.0 11.7 120 16.6 12.8 130
COLUMBINE 9160 16.6 12.4 134 19.6 13.6 144
DIVIDE PEAK 8880 12.5 10.8 116 16.0 11.6 138
ELK RIVER 8700 12.6 9.2 137 15.4 10.5 147
JOE WRIGHT 10120 14.7 11.3 130 20.4 13.6 150
NORTH FRENCH CREEK 10130 22.4 15.4 145 21.9 13.8 159
OLD BATTLE 10000 24.7 16.6 149 25.3 18.7 135
SAGE CREEK BASIN 7850 11.0 6.3 175 11.7 6.7 175
SOUTH BRUSH CREEK 8440 9.8 6.0 163 13.1 9.0 146
TOWER 10500 29.2 24.2 121 31.7 20.9 152
WEBBER SPRINGS 9250 16.7 13.2 127 21.6 15.2 142
WILLOW CREEK PASS 9540 10.9 6.3 173 11.0 7.1 155
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Basin wide percent of average 136 146
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.6 12.6 124 16.9 11.9 142
CASPER MTN. 7900 6.1 7.7 79 8.9 7.9 113
DEADMAN HILL 10220 4.6 8.8 52 13.9 8.9 156
DEER PARK 9700 13.0 9.1 143 13.9 12.4 112
LAPRELE CREEK 8375 6.0 6.1 98 7.4 7.0 106
RENO HILL 8400 7.6 7.3 104 9.4 8.1 116
ROACH 9700 11.6 8.7 133 14.7 9.8 150
SAND LAKE 10050 20.1 16.9 119 19.1 13.4 143
SOUTH PASS 9040 10.6 9.5 112 9.5 10.3 92
WINDY PEAK 7900 4.8 3.8 126 7.4 6.1 121
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Basin wide percent of average 110 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.8 5.6 104 9.3 8.3 112
DIVIDE PEAK 8880 12.5 10.8 116 16.0 11.6 138
OLD BATTLE 10000 24.7 16.6 149 25.3 18.7 135
SANDSTONE RS 8150 7.7 7.0 110 15.6 10.4 150
WHISKEY PARK 8950 -M 13.9 * 22.1 15.9 139
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Basin wide percent of average 127 136
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.5 7.9 108 9.1 7.5 121
BLIND BULL SUM 8650 15.1 15.3 99 11.5 12.9 89
EAST RIM DIVIDE 7930 7.3 6.9 106 7.2 6.7 107
ELKHART PARK G.S. 9400 6.9 7.3 95 7.5 7.6 99
GROS VENTRE SUMMIT 8750 8.9 8.0 111 9.0 7.3 123
GUNSIGHT PASS 9820 9.7 -M * 10.0 -M *
KENDALL R.S. 7740 6.9 8.0 86 8.7 8.1 107
LOOMIS PARK 8240 9.8 9.3 105 11.0 9.8 112
NEW FORK LAKE 8340 6.6 6.3 105 6.4 6.8 94
POCKET CREEK 9360 6.6 -M * 8.5 -M *
SNIDER BASIN 8060 10.5 8.0 131 11.1 9.3 119
SPRING CREEK DIVIDE 9000 17.0 14.4 118 17.6 15.4 114
TRIPLE PEAK 8500 15.1 13.8 109 17.4 13.3 131
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Basin wide percent of average 107 111
LOWER GREEN RIVER
HAMS FORK 7840 7.8 6.6 118 9.1 6.9 132
HEWINTA 9519 5.1 5.1 100 10.2 7.9 129
HICKERSON PARK 9145 3.4 3.5 97 5.3 4.6 115
HOLE-IN-ROCK 9150 4.2 3.2 131 5.6 4.2 133
INDIAN CREEK 9425 17.2 14.5 119 16.5 14.2 116
KELLEY R.S. 8180 11.4 8.8 130 14.3 11.8 121
STEEL CREEK PARK 10200 9.0 7.7 117 12.0 8.5 141
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Basin wide percent of average 118 126
UPPER BEAR RIVER
BUG LAKE 7950 16.0 10.2 157 17.4 10.7 163
HAYDEN FORK 9212 10.9 7.6 143 18.3 11.5 159
KELLEY R.S. 8180 11.4 8.8 130 14.3 11.8 121
LILY LAKE 9156 10.2 6.5 157 13.6 9.8 139
MONTE CRISTO 8960 18.7 13.7 136 21.3 14.0 152
SALT RIVER SUMMIT 7760 8.6 6.8 126 12.6 10.6 119
TRIAL LAKE 9992 21.1 12.5 169 22.6 13.1 173
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Basin wide percent of average 147 147
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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.