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 SATURDAY: FEBRUARY 25 , 2012
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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 16.8 15.5 108 20.1 18.0 112
COTTONWOOD CREEK 7670 16.4 17.6 93 21.3 22.2 96
EAST RIM DIVIDE 7930 9.8 10.6 92 10.3 9.8 105
GRAND TARGHEE 9260 28.5 -M * 23.2 -M *
GRANITE CREEK 6770 14.1 15.5 91 14.6 16.8 87
GRASSY LAKE 7265 25.6 28.4 90 29.3 30.0 98
GROS VENTRE SUMMIT 8750 8.0 11.1 72 8.5 10.4 82
GUNSIGHT PASS 9820 10.0 -M * 10.8 -M *
LEWIS LAKE DIVIDE 7850 23.8 28.6 83 27.9 30.4 92
PHILLIPS BENCH 8200 19.1 23.0 83 20.8 23.8 87
SALT RIVER SUMMIT 7760 9.5 11.7 81 10.2 15.3 67
SNAKE RIVER STATION 6920 15.6 15.9 98 20.3 18.9 107
SPRING CREEK DIVIDE 9000 19.8 21.3 93 19.8 21.8 91
THUMB DIVIDE 7980 12.1 14.7 82 13.3 15.4 86
TOGWOTEE PASS 9580 17.7 20.1 88 19.5 20.0 98
TWO OCEAN PLATEAU 9240 26.7 22.6 118 21.3 22.5 95
WILLOW CREEK 8380 21.5 24.5 88 26.6 26.1 102
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Basin wide percent of average 91 94
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.2 19.4 104 19.6 16.6 118
BLACK BEAR 8170 26.8 32.0 84 27.6 32.0 86
CANYON 7870 9.9 11.1 89 11.4 12.6 90
FISHER CREEK 9100 27.1 28.8 94 26.6 29.5 90
MADISON PLATEAU 7750 16.3 20.2 81 20.0 21.3 94
NORTHEAST ENTRANCE 7350 8.7 9.5 92 -M 10.5 *
PARKER PEAK 9400 18.4 17.8 103 18.3 13.3 138
SYLVAN LAKE 8420 14.8 18.4 80 19.7 17.4 113
THUMB DIVIDE 7980 12.1 14.7 82 13.3 15.4 86
TWO OCEAN PLATEAU 9240 26.7 22.6 118 21.3 22.5 95
WHISKEY CREEK 6800 11.4 14.0 81 14.5 16.7 87
WHITE MILL 8700 17.8 19.7 90 18.8 22.0 85
WOLVERINE 7650 11.7 10.4 112 11.0 10.9 101
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Basin wide percent of average 93 96
WIND RIVER
BURROUGHS CREEK 8750 12.4 12.4 100 12.7 13.3 95
CASTLE CREEK 8400 6.6 -M * 7.5 -M *
COLD SPRINGS 9630 7.0 7.1 99 8.0 8.2 98
DEER PARK 9700 9.9 14.3 69 14.9 17.3 86
HOBBS PARK 10100 12.2 11.7 104 11.5 9.6 120
LITTLE WARM 9370 6.8 9.3 73 8.9 10.6 84
SOUTH PASS 9040 12.0 13.8 87 11.8 14.6 81
ST. LAWRENCE ALT 8620 4.4 5.8 76 6.4 6.8 94
TOGWOTEE PASS 9580 17.7 20.1 88 19.5 20.0 98
TOWNSEND CREEK 8700 7.5 6.8 110 10.1 8.6 117
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Basin wide percent of average 89 95
BIGHORN BASIN
BALD MTN. 9380 17.2 15.6 110 12.7 13.7 93
BEAR TRAP MEADOW 8200 6.7 4.2 160 7.1 6.2 115
BLACKWATER 9780 20.5 20.1 102 20.2 16.7 121
BONE SPRINGS DIV 9350 17.5 12.8 137 13.5 11.2 121
EVENING STAR 9200 23.5 24.4 96 25.5 21.1 121
GRAVE SPRINGS 8550 7.1 6.9 103 8.4 7.5 112
KIRWIN 9550 10.4 9.0 116 12.3 8.9 138
MARQUETTE 8760 8.0 -M * 10.7 7.3 147
MIDDLE POWDER 7760 8.8 8.7 101 8.9 9.3 96
OWL CREEK 8975 3.9 4.0 98 4.6 4.3 107
POWDER RIVER PASS 9480 10.2 8.5 120 12.1 9.7 125
SHELL CREEK 9580 15.5 11.6 134 13.6 10.6 128
SYLVAN LAKE 8420 14.8 18.4 80 19.7 17.4 113
SYLVAN ROAD 7120 11.3 11.0 103 15.1 15.3 99
TIMBER CREEK 7950 4.3 4.1 105 7.9 5.2 152
YOUNTS PEAK 8350 14.0 14.4 97 13.4 13.2 102
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Basin wide percent of average 107 116
SHOSHONE RIVER
BLACKWATER 9780 20.5 20.1 102 20.2 16.7 121
EVENING STAR 9200 23.5 24.4 96 25.5 21.1 121
KIRWIN 9550 10.4 9.0 116 12.3 8.9 138
MARQUETTE 8760 8.0 -M * 10.7 7.3 147
SYLVAN LAKE 8420 14.8 18.4 80 19.7 17.4 113
SYLVAN ROAD 7120 11.3 11.0 103 15.1 15.3 99
YOUNTS PEAK 8350 14.0 14.4 97 13.4 13.2 102
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Basin wide percent of average 97 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.7 4.2 160 7.1 6.2 115
BIG GOOSE 7990 8.7 7.4 118 12.3 6.6 186
BONE SPRINGS DIV 9350 17.5 12.8 137 13.5 11.2 121
BURGESS JUNCTION 7880 11.1 8.7 128 13.0 9.2 141
CLOUD PEAK RESERVOIR 9860 14.2 9.7 146 12.9 9.5 136
DOME LAKE 8880 12.6 9.3 135 13.2 9.9 133
GRAVE SPRINGS 8550 7.1 6.9 103 8.4 7.5 112
HANSEN SAWMILL 8360 5.2 5.0 104 7.1 6.1 116
LITTLE GOOSE 8870 9.8 -M * 14.3 -M *
MIDDLE POWDER 7760 8.8 8.7 101 8.9 9.3 96
POWDER RIVER PASS 9480 10.2 8.5 120 12.1 9.7 125
SOLDIER PARK 8720 10.6 -M * 8.6 -M *
SUCKER CREEK 8880 13.1 8.8 149 13.5 10.2 132
TIE CREEK 6870 6.6 4.7 140 12.5 7.7 162
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Basin wide percent of average 129 130
BELLE FOURCHE
BLIND PARK 6890 7.4 6.5 114 8.3 9.0 92
COLE CANYON 5910 5.5 5.5 100 6.9 5.3 130
NORTH RAPID CREEK 6130 6.8 6.5 105 6.5 7.2 90
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Basin wide percent of average 106 101
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 19.2 -M * 20.6 -M *
CINNABAR PARK 9574 15.0 15.6 96 18.4 16.8 110
COLUMBINE 9160 16.3 21.1 77 16.7 20.1 83
DIVIDE PEAK 8880 12.7 15.1 84 16.6 16.4 101
ELK RIVER 8700 12.7 15.5 82 13.1 15.5 85
JOE WRIGHT 10120 12.3 16.7 74 16.9 19.4 87
NORTH FRENCH CREEK 10130 17.9 21.8 82 17.7 19.5 91
OLD BATTLE 10000 19.6 25.2 78 22.8 27.3 84
SAGE CREEK BASIN 7850 12.8 8.8 145 9.1 9.5 96
SOUTH BRUSH CREEK 8440 7.4 9.5 78 10.3 12.9 80
TOWER 10500 25.8 36.3 71 26.4 30.8 86
WEBBER SPRINGS 9250 15.0 20.3 74 18.6 21.3 87
WILLOW CREEK PASS 9540 -M 9.3 * 8.1 10.0 81
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Basin wide percent of average 81 89
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.9 18.3 87 17.2 16.9 102
CASPER MTN. 7900 17.3 10.9 159 16.8 10.7 157
DEADMAN HILL 10220 15.1 12.5 121 14.2 12.7 112
DEER PARK 9700 9.9 14.3 69 14.9 17.3 86
LAPRELE CREEK 8375 8.6 8.6 100 11.2 9.6 117
RENO HILL 8400 14.6 10.0 146 16.1 11.1 145
ROACH 9700 12.0 13.4 90 14.8 14.2 104
SAND LAKE 10050 21.1 24.1 88 20.7 18.6 111
SOUTH PASS 9040 12.0 13.8 87 11.8 14.6 81
WINDY PEAK 7900 6.8 5.8 117 8.5 8.2 104
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Basin wide percent of average 101 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.1 9.3 109 10.1 11.9 85
DIVIDE PEAK 8880 12.7 15.1 84 16.6 16.4 101
OLD BATTLE 10000 19.6 25.2 78 22.8 27.3 84
SANDSTONE RS 8150 9.6 12.0 80 10.7 15.1 71
WHISKEY PARK 8950 17.9 22.8 79 21.1 22.7 93
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Basin wide percent of average 83 87
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.2 11.7 96 11.3 10.9 104
BLIND BULL SUM 8650 19.2 22.2 86 15.2 18.4 83
EAST RIM DIVIDE 7930 9.8 10.6 92 10.3 9.8 105
ELKHART PARK G.S. 9400 11.2 10.7 105 12.2 10.6 115
GROS VENTRE SUMMIT 8750 8.0 11.1 72 8.5 10.4 82
GUNSIGHT PASS 9820 10.0 -M * 10.8 -M *
KENDALL R.S. 7740 13.0 11.9 109 13.8 12.1 114
LOOMIS PARK 8240 12.2 13.9 88 14.4 14.3 101
NEW FORK LAKE 8340 10.0 9.3 108 9.4 9.3 101
POCKET CREEK 9360 8.5 -M * 10.5 -M *
SNIDER BASIN 8060 11.2 12.0 93 11.4 13.3 86
SPRING CREEK DIVIDE 9000 19.8 21.3 93 19.8 21.8 91
TRIPLE PEAK 8500 19.7 20.1 98 22.1 19.9 111
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Basin wide percent of average 94 98
LOWER GREEN RIVER
HAMS FORK 7840 8.7 10.5 83 8.1 10.0 81
HEWINTA 9519 7.1 8.7 82 10.2 11.2 91
HICKERSON PARK 9145 7.8 5.6 139 10.4 6.0 173
HOLE-IN-ROCK 9150 6.9 5.4 128 9.9 5.6 177
INDIAN CREEK 9425 16.9 21.4 79 15.2 20.4 75
KELLEY R.S. 8180 11.3 13.4 84 13.2 16.6 80
STEEL CREEK PARK 10200 -M 12.1 * 11.4 12.4 92
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Basin wide percent of average 90 95
UPPER BEAR RIVER
BUG LAKE 7950 11.5 16.4 70 12.9 15.6 83
HAYDEN FORK 9212 9.0 12.6 71 13.8 16.5 84
KELLEY R.S. 8180 11.3 13.4 84 13.2 16.6 80
LILY LAKE 9156 7.6 10.4 73 9.5 13.8 69
MONTE CRISTO 8960 15.2 23.6 64 15.5 20.4 76
SALT RIVER SUMMIT 7760 9.5 11.7 81 10.2 15.3 67
TRIAL LAKE 9992 11.0 19.8 56 11.1 19.7 56
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Basin wide percent of average 70 73
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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.