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 WEDNESDAY: FEBRUARY 16 , 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 14.6 14.5 101 17.5 16.8 104
COTTONWOOD CREEK 7670 19.1 16.2 118 26.2 20.8 126
GRAND TARGHEE 9260 35.5 -M * 25.7 -M *
GRANITE CREEK 6770 14.3 14.3 100 16.8 15.6 108
GRASSY LAKE 7265 25.5 26.4 97 28.5 28.1 101
GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.1 9.7 114
GUNSIGHT PASS 9820 12.7 -M * 12.8 -M *
LEWIS LAKE DIVIDE 7850 24.2 26.6 91 25.4 28.2 90
PHILLIPS BENCH 8200 21.9 21.3 103 23.2 22.1 105
SALT RIVER SUMMIT 7760 12.1 10.9 111 16.3 14.2 115
SNAKE RIVER STATION 6920 -M 14.7 * -M 17.6 *
SPRING CREEK DIVIDE 9000 25.5 19.8 129 25.2 20.4 124
THUMB DIVIDE 7980 14.2 13.6 104 14.5 14.3 101
TOGWOTEE PASS 9580 21.6 18.9 114 23.0 18.8 122
TWO OCEAN PLATEAU 9240 24.1 21.3 113 20.4 20.9 98
WILLOW CREEK 8380 24.1 22.9 105 29.3 24.4 120
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Basin wide percent of average 106 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 18.7 18.3 102 18.3 15.6 117
BLACK BEAR 8170 30.8 29.5 104 30.2 29.7 102
CANYON 7870 11.7 10.2 115 13.4 11.9 113
FISHER CREEK 9100 29.1 26.9 108 28.6 27.6 104
MADISON PLATEAU 7750 19.1 18.7 102 21.0 19.8 106
NORTHEAST ENTRANCE 7350 9.7 8.9 109 11.6 9.9 117
PARKER PEAK 9400 21.0 16.6 127 19.0 12.4 153
SYLVAN LAKE 8420 17.3 17.0 102 20.6 16.4 126
THUMB DIVIDE 7980 14.2 13.6 104 14.5 14.3 101
TWO OCEAN PLATEAU 9240 24.1 21.3 113 20.4 20.9 98
WHISKEY CREEK 6800 13.3 12.8 104 16.3 15.6 104
WHITE MILL 8700 20.1 18.3 110 20.8 20.5 101
WOLVERINE 7650 11.4 9.7 118 11.1 10.2 109
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Basin wide percent of average 108 109
WIND RIVER
BURROUGHS CREEK 8750 10.8 11.4 95 11.3 12.5 90
CASTLE CREEK 8400 4.6 -M * 5.4 -M *
COLD SPRINGS 9630 6.3 6.5 97 6.5 7.7 84
DEER PARK 9700 14.5 13.8 105 15.8 16.3 97
HOBBS PARK 10100 10.0 10.8 93 9.1 9.0 101
LITTLE WARM 9370 8.6 8.6 100 9.0 10.0 90
SOUTH PASS 9040 12.2 12.6 97 10.7 13.7 78
ST. LAWRENCE ALT 8620 3.8 5.3 72 5.0 6.4 78
TOGWOTEE PASS 9580 21.6 18.9 114 23.0 18.8 122
TOWNSEND CREEK 8700 -M 6.3 * -M 8.1 *
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Basin wide percent of average 100 96
BIGHORN BASIN
BALD MTN. 9380 17.7 14.6 121 14.3 13.0 110
BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 6.0 108
BLACKWATER 9780 18.9 18.5 102 18.5 15.7 118
BONE SPRINGS DIV 9350 14.1 11.8 119 11.8 10.6 111
EVENING STAR 9200 23.4 22.6 104 26.3 19.8 133
GRAVE SPRINGS 8550 6.1 6.5 94 6.3 7.0 90
KIRWIN 9550 8.3 8.4 99 9.3 8.4 111
MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76
MIDDLE POWDER 7760 7.1 8.1 88 8.9 8.9 100
OWL CREEK 8975 3.9 3.7 105 4.1 4.1 100
POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.2 135
SHELL CREEK 9580 12.5 10.8 116 11.1 10.1 110
SYLVAN LAKE 8420 17.3 17.0 102 20.6 16.4 126
SYLVAN ROAD 7120 11.5 10.3 112 15.4 14.6 105
TIMBER CREEK 7950 2.8 3.9 72 3.5 4.9 71
YOUNTS PEAK 8350 12.6 13.3 95 11.1 12.5 89
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Basin wide percent of average 104 110
SHOSHONE RIVER
BLACKWATER 9780 18.9 18.5 102 18.5 15.7 118
EVENING STAR 9200 23.4 22.6 104 26.3 19.8 133
KIRWIN 9550 8.3 8.4 99 9.3 8.4 111
MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76
SYLVAN LAKE 8420 17.3 17.0 102 20.6 16.4 126
SYLVAN ROAD 7120 11.5 10.3 112 15.4 14.6 105
YOUNTS PEAK 8350 12.6 13.3 95 11.1 12.5 89
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Basin wide percent of average 97 113
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 6.0 108
BIG GOOSE 7990 5.8 6.8 85 7.5 6.2 121
BONE SPRINGS DIV 9350 14.1 11.8 119 11.8 10.6 111
BURGESS JUNCTION 7880 8.0 8.1 99 8.9 8.7 102
CLOUD PEAK RESERVOIR 9860 11.4 9.0 127 11.0 9.0 122
DOME LAKE 8880 8.5 8.8 97 9.6 9.5 101
GRAVE SPRINGS 8550 6.1 6.5 94 6.3 7.0 90
HANSEN SAWMILL 8360 4.6 4.6 100 5.2 5.8 90
LITTLE GOOSE 8870 6.4 -M * 10.6 -M *
MIDDLE POWDER 7760 7.1 8.1 88 8.9 8.9 100
POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.2 135
SOLDIER PARK 8720 4.9 -M * 6.3 -M *
SUCKER CREEK 8880 9.7 8.1 120 10.7 9.6 111
TIE CREEK 6870 5.2 4.5 116 7.5 7.3 103
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Basin wide percent of average 110 109
BELLE FOURCHE
BLIND PARK 6890 7.9 6.0 132 13.6 8.5 160
COLE CANYON 5910 6.7 5.2 129 9.5 5.1 186
NORTH RAPID CREEK 6130 7.5 6.0 125 11.6 6.9 168
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Basin wide percent of average 128 169
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 20.2 14.7 137 21.9 15.9 138
COLUMBINE 9160 25.3 19.5 130 27.1 18.8 144
DIVIDE PEAK 8880 15.7 14.2 111 19.7 15.3 129
ELK RIVER 8700 18.3 14.3 128 20.3 14.4 141
JOE WRIGHT 10120 21.6 15.7 138 27.1 18.2 149
NORTH FRENCH CREEK 10130 33.5 20.5 163 -M 18.3 *
OLD BATTLE 10000 31.5 23.2 136 28.0 25.3 111
SAGE CREEK BASIN 7850 14.9 8.2 182 13.9 8.9 156
SOUTH BRUSH CREEK 8440 13.5 8.6 157 16.8 12.2 138
TOWER 10500 41.3 34.1 121 42.1 28.7 147
WEBBER SPRINGS 9250 22.1 18.6 119 26.9 20.0 135
WILLOW CREEK PASS 9540 13.4 8.6 156 13.2 9.3 142
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Basin wide percent of average 136 137
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.7 17.2 132 23.6 15.8 149
CASPER MTN. 7900 8.7 10.2 85 11.0 10.0 110
DEADMAN HILL 10220 15.5 11.8 131 16.8 11.9 141
DEER PARK 9700 14.5 13.8 105 15.8 16.3 97
LAPRELE CREEK 8375 9.4 8.1 116 10.7 9.0 119
RENO HILL 8400 11.0 9.3 118 13.0 10.3 126
ROACH 9700 15.8 12.6 125 19.1 13.1 146
SAND LAKE 10050 27.4 22.4 122 26.0 17.5 149
SOUTH PASS 9040 12.2 12.6 97 10.7 13.7 78
WINDY PEAK 7900 7.5 5.3 142 9.9 7.7 129
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Basin wide percent of average 117 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 8.7 * 10.7 11.1 96
DIVIDE PEAK 8880 15.7 14.2 111 19.7 15.3 129
OLD BATTLE 10000 31.5 23.2 136 28.0 25.3 111
SANDSTONE RS 8150 10.7 11.1 96 -M 14.1 *
WHISKEY PARK 8950 -M 21.2 * 30.0 21.4 140
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Basin wide percent of average 119 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.1 10.9 93 10.5 10.2 103
BLIND BULL SUM 8650 21.6 20.7 104 15.5 17.2 90
EAST RIM DIVIDE 7930 11.0 9.8 112 9.5 9.1 104
ELKHART PARK G.S. 9400 9.3 10.0 93 9.3 9.9 94
GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.1 9.7 114
GUNSIGHT PASS 9820 12.7 -M * 12.8 -M *
KENDALL R.S. 7740 9.2 11.1 83 10.9 11.1 98
LOOMIS PARK 8240 13.8 12.9 107 15.0 13.3 113
NEW FORK LAKE 8340 9.1 8.7 105 8.7 8.7 100
POCKET CREEK 9360 7.5 -M * 10.1 -M *
SNIDER BASIN 8060 14.8 11.2 132 14.8 12.4 119
SPRING CREEK DIVIDE 9000 25.5 19.8 129 25.2 20.4 124
TRIPLE PEAK 8500 22.7 18.8 121 24.4 18.4 133
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Basin wide percent of average 110 110
LOWER GREEN RIVER
HAMS FORK 7840 11.7 9.7 121 11.9 9.4 127
HEWINTA 9519 9.1 7.9 115 12.7 10.4 122
HICKERSON PARK 9145 5.2 5.2 100 7.0 5.7 123
HOLE-IN-ROCK 9150 6.0 5.0 120 7.5 5.3 142
INDIAN CREEK 9425 23.0 19.9 116 21.2 19.0 112
KELLEY R.S. 8180 15.1 12.3 123 17.9 15.6 115
STEEL CREEK PARK 10200 12.6 11.0 115 15.4 11.5 134
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Basin wide percent of average 116 122
UPPER BEAR RIVER
BUG LAKE 7950 20.2 15.2 133 21.2 14.5 146
HAYDEN FORK 9212 16.4 11.5 143 22.5 15.3 147
KELLEY R.S. 8180 15.1 12.3 123 17.9 15.6 115
LILY LAKE 9156 13.9 9.6 145 16.5 12.8 129
MONTE CRISTO 8960 24.6 21.6 114 26.0 18.9 138
SALT RIVER SUMMIT 7760 12.1 10.9 111 16.3 14.2 115
TRIAL LAKE 9992 25.8 18.2 142 26.3 18.1 145
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Basin wide percent of average 129 134
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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.