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 23 , 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 15.7 15.3 103 18.7 17.7 106
COTTONWOOD CREEK 7670 21.0 17.2 122 28.1 21.9 128
GRAND TARGHEE 9260 37.9 -M * 26.1 -M *
GRANITE CREEK 6770 15.6 15.2 103 17.7 16.5 107
GRASSY LAKE 7265 28.3 28.0 101 30.9 29.6 104
GROS VENTRE SUMMIT 8750 11.9 10.9 109 11.6 10.2 114
GUNSIGHT PASS 9820 13.3 -M * 13.3 -M *
LEWIS LAKE DIVIDE 7850 26.9 28.1 96 26.9 29.9 90
PHILLIPS BENCH 8200 23.8 22.6 105 24.6 23.4 105
SALT RIVER SUMMIT 7760 13.4 11.5 117 17.4 15.0 116
SNAKE RIVER STATION 6920 -M 15.6 * -M 18.6 *
SPRING CREEK DIVIDE 9000 27.0 21.0 129 26.3 21.5 122
THUMB DIVIDE 7980 15.5 14.4 108 15.6 15.2 103
TOGWOTEE PASS 9580 22.6 19.8 114 24.0 19.7 122
TWO OCEAN PLATEAU 9240 -M 22.3 * -M 22.2 *
WILLOW CREEK 8380 26.4 24.1 110 31.4 25.7 122
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Basin wide percent of average 109 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 19.8 19.1 104 19.1 16.4 116
BLACK BEAR 8170 34.2 31.5 109 33.2 31.5 105
CANYON 7870 13.1 10.9 120 14.1 12.5 113
FISHER CREEK 9100 31.6 28.4 111 30.3 29.1 104
MADISON PLATEAU 7750 21.7 19.9 109 23.6 21.0 112
NORTHEAST ENTRANCE 7350 10.7 9.4 114 12.3 10.4 118
PARKER PEAK 9400 22.4 17.5 128 20.3 13.1 155
SYLVAN LAKE 8420 18.6 18.1 103 21.8 17.2 127
THUMB DIVIDE 7980 15.5 14.4 108 15.6 15.2 103
TWO OCEAN PLATEAU 9240 -M 22.3 * -M 22.2 *
WHISKEY CREEK 6800 15.4 13.8 112 18.3 16.5 111
WHITE MILL 8700 21.6 19.5 111 22.0 21.6 102
WOLVERINE 7650 12.1 10.3 117 11.5 10.7 107
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Basin wide percent of average 111 113
WIND RIVER
BURROUGHS CREEK 8750 11.6 12.2 95 12.1 13.1 92
CASTLE CREEK 8400 5.1 -M * 5.9 -M *
COLD SPRINGS 9630 6.6 6.9 96 6.7 8.1 83
DEER PARK 9700 15.5 13.9 112 17.2 17.1 101
HOBBS PARK 10100 11.2 11.5 97 10.0 9.5 105
LITTLE WARM 9370 9.2 9.2 100 9.3 10.4 89
SOUTH PASS 9040 13.8 13.5 102 11.8 14.4 82
ST. LAWRENCE ALT 8620 4.4 5.6 79 5.6 6.7 84
TOGWOTEE PASS 9580 22.6 19.8 114 24.0 19.7 122
TOWNSEND CREEK 8700 6.9 6.7 103 9.0 8.5 106
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Basin wide percent of average 103 98
BIGHORN BASIN
BALD MTN. 9380 19.0 15.4 123 15.6 13.5 116
BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108
BLACKWATER 9780 19.8 19.7 101 19.2 16.5 116
BONE SPRINGS DIV 9350 15.3 12.5 122 12.6 11.1 114
EVENING STAR 9200 25.0 24.0 104 27.5 20.8 132
GRAVE SPRINGS 8550 6.4 6.8 94 6.7 7.4 91
KIRWIN 9550 8.7 8.8 99 9.6 8.8 109
MARQUETTE 8760 1.7 6.6 26 5.1 7.2 71
MIDDLE POWDER 7760 7.4 8.6 86 9.1 9.2 99
OWL CREEK 8975 4.3 3.9 110 4.2 4.2 100
POWDER RIVER PASS 9480 11.4 8.3 137 13.1 9.6 136
SHELL CREEK 9580 13.4 11.3 119 12.1 10.5 115
SYLVAN LAKE 8420 18.6 18.1 103 21.8 17.2 127
SYLVAN ROAD 7120 12.7 10.9 117 16.3 15.1 108
TIMBER CREEK 7950 2.8 4.0 70 3.6 5.2 69
YOUNTS PEAK 8350 13.2 14.2 93 11.5 13.1 88
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Basin wide percent of average 105 111
SHOSHONE RIVER
BLACKWATER 9780 19.8 19.7 101 19.2 16.5 116
EVENING STAR 9200 25.0 24.0 104 27.5 20.8 132
KIRWIN 9550 8.7 8.8 99 9.6 8.8 109
MARQUETTE 8760 1.7 6.6 26 5.1 7.2 71
SYLVAN LAKE 8420 18.6 18.1 103 21.8 17.2 127
SYLVAN ROAD 7120 12.7 10.9 117 16.3 15.1 108
YOUNTS PEAK 8350 13.2 14.2 93 11.5 13.1 88
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Basin wide percent of average 97 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108
BIG GOOSE 7990 5.9 7.3 81 7.8 6.5 120
BONE SPRINGS DIV 9350 15.3 12.5 122 12.6 11.1 114
BURGESS JUNCTION 7880 8.6 8.6 100 9.5 9.1 104
CLOUD PEAK RESERVOIR 9860 12.4 9.5 131 11.8 9.4 126
DOME LAKE 8880 9.3 9.2 101 10.1 9.8 103
GRAVE SPRINGS 8550 6.4 6.8 94 6.7 7.4 91
HANSEN SAWMILL 8360 5.2 4.9 106 5.8 6.0 97
LITTLE GOOSE 8870 6.8 -M * 10.8 -M *
MIDDLE POWDER 7760 7.4 8.6 86 9.1 9.2 99
POWDER RIVER PASS 9480 11.4 8.3 137 13.1 9.6 136
SOLDIER PARK 8720 5.3 -M * 6.8 -M *
SUCKER CREEK 8880 10.1 8.7 116 11.1 10.1 110
TIE CREEK 6870 5.5 4.6 120 7.9 7.6 104
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Basin wide percent of average 111 110
BELLE FOURCHE
BLIND PARK 6890 8.3 6.4 130 14.0 8.9 157
COLE CANYON 5910 6.8 5.4 126 10.1 5.3 191
NORTH RAPID CREEK 6130 7.8 6.4 122 12.1 7.2 168
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Basin wide percent of average 126 169
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 20.5 15.4 133 21.9 16.6 132
COLUMBINE 9160 26.8 20.7 129 28.3 19.8 143
DIVIDE PEAK 8880 17.2 14.9 115 21.3 16.2 131
ELK RIVER 8700 19.8 15.2 130 21.4 15.3 140
JOE WRIGHT 10120 22.3 16.4 136 28.2 19.1 148
NORTH FRENCH CREEK 10130 34.2 21.5 159 32.2 19.2 168
OLD BATTLE 10000 33.1 24.7 134 27.8 26.9 103
SAGE CREEK BASIN 7850 16.2 8.6 188 15.0 9.4 160
SOUTH BRUSH CREEK 8440 14.1 9.3 152 17.3 12.7 136
TOWER 10500 43.6 35.8 122 44.0 30.4 145
WEBBER SPRINGS 9250 23.9 19.9 120 28.7 21.0 137
WILLOW CREEK PASS 9540 14.2 9.1 156 13.7 9.8 140
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Basin wide percent of average 135 139
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 23.7 18.1 131 24.3 16.6 146
CASPER MTN. 7900 9.0 10.7 84 11.6 10.5 110
DEADMAN HILL 10220 16.6 12.4 134 17.5 12.5 140
DEER PARK 9700 15.5 13.9 112 17.2 17.1 101
LAPRELE CREEK 8375 9.9 8.5 116 11.2 9.5 118
RENO HILL 8400 11.5 9.8 117 13.4 10.9 123
ROACH 9700 16.5 13.3 124 20.0 14.0 143
SAND LAKE 10050 28.5 23.7 120 27.1 18.4 147
SOUTH PASS 9040 13.8 13.5 102 11.8 14.4 82
WINDY PEAK 7900 8.2 5.7 144 10.5 8.1 130
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Basin wide percent of average 118 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 9.1 * 10.7 11.7 91
DIVIDE PEAK 8880 17.2 14.9 115 21.3 16.2 131
OLD BATTLE 10000 33.1 24.7 134 27.8 26.9 103
SANDSTONE RS 8150 11.4 11.8 97 -M 14.9 *
WHISKEY PARK 8950 -M 22.4 * 31.7 22.4 142
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Basin wide percent of average 120 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.6 11.5 101 11.9 10.8 110
BLIND BULL SUM 8650 22.5 21.8 103 16.0 18.2 88
EAST RIM DIVIDE 7930 11.8 10.4 113 10.3 9.7 106
ELKHART PARK G.S. 9400 10.2 10.5 97 10.2 10.4 98
GROS VENTRE SUMMIT 8750 11.9 10.9 109 11.6 10.2 114
GUNSIGHT PASS 9820 13.3 -M * 13.3 -M *
KENDALL R.S. 7740 10.1 11.7 86 11.8 11.9 99
LOOMIS PARK 8240 15.2 13.7 111 16.0 14.1 113
NEW FORK LAKE 8340 9.9 9.2 108 9.2 9.2 100
POCKET CREEK 9360 8.9 -M * 11.4 -M *
SNIDER BASIN 8060 15.8 11.8 134 15.6 13.1 119
SPRING CREEK DIVIDE 9000 27.0 21.0 129 26.3 21.5 122
TRIPLE PEAK 8500 23.8 19.8 120 25.7 19.6 131
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Basin wide percent of average 111 111
LOWER GREEN RIVER
HAMS FORK 7840 12.9 10.3 125 12.2 9.9 123
HEWINTA 9519 10.0 8.5 118 13.5 11.0 123
HICKERSON PARK 9145 6.0 5.5 109 7.7 5.9 131
HOLE-IN-ROCK 9150 6.6 5.3 125 8.2 5.5 149
INDIAN CREEK 9425 24.5 21.0 117 22.3 20.1 111
KELLEY R.S. 8180 16.3 13.2 123 19.1 16.4 116
STEEL CREEK PARK 10200 13.6 11.9 114 16.3 12.2 134
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Basin wide percent of average 119 123
UPPER BEAR RIVER
BUG LAKE 7950 22.3 16.2 138 22.2 15.3 145
HAYDEN FORK 9212 17.7 12.3 144 23.7 16.2 146
KELLEY R.S. 8180 16.3 13.2 123 19.1 16.4 116
LILY LAKE 9156 15.1 10.2 148 17.3 13.6 127
MONTE CRISTO 8960 27.4 23.2 118 27.5 20.0 138
SALT RIVER SUMMIT 7760 13.4 11.5 117 17.4 15.0 116
TRIAL LAKE 9992 27.8 19.4 143 26.8 19.3 139
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Basin wide percent of average 132 133
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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.