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 22 , 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 16.4 15.2 108 19.5 17.6 111
COTTONWOOD CREEK 7670 14.9 17.1 87 19.8 21.7 91
EAST RIM DIVIDE 7930 9.2 10.4 88 9.8 9.6 102
GRAND TARGHEE 9260 28.0 -M * 23.2 -M *
GRANITE CREEK 6770 12.5 15.1 83 13.1 16.4 80
GRASSY LAKE 7265 25.3 27.8 91 29.3 29.4 100
GROS VENTRE SUMMIT 8750 7.5 10.8 69 8.3 10.1 82
GUNSIGHT PASS 9820 9.3 -M * 10.3 -M *
LEWIS LAKE DIVIDE 7850 23.0 27.9 82 27.2 29.7 92
PHILLIPS BENCH 8200 18.4 22.4 82 20.0 23.2 86
SALT RIVER SUMMIT 7760 9.1 11.4 80 9.7 14.9 65
SNAKE RIVER STATION 6920 15.3 15.5 99 20.2 18.4 110
SPRING CREEK DIVIDE 9000 17.3 20.8 83 17.8 21.3 84
THUMB DIVIDE 7980 11.6 14.3 81 13.0 15.1 86
TOGWOTEE PASS 9580 16.5 19.7 84 18.3 19.6 93
TWO OCEAN PLATEAU 9240 25.6 22.2 115 21.0 22.0 95
WILLOW CREEK 8380 20.0 24.0 83 25.1 25.5 98
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Basin wide percent of average 88 92
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 18.4 19.0 97 18.0 16.3 110
BLACK BEAR 8170 26.3 31.2 84 27.4 31.2 88
CANYON 7870 9.4 10.9 86 10.9 12.4 88
FISHER CREEK 9100 25.4 28.2 90 25.0 28.9 87
MADISON PLATEAU 7750 16.0 19.8 81 19.7 20.8 95
NORTHEAST ENTRANCE 7350 7.4 9.3 80 -M 10.3 *
PARKER PEAK 9400 17.5 17.4 101 17.6 13.0 135
SYLVAN LAKE 8420 13.9 18.0 77 18.8 17.1 110
THUMB DIVIDE 7980 11.6 14.3 81 13.0 15.1 86
TWO OCEAN PLATEAU 9240 25.6 22.2 115 21.0 22.0 95
WHISKEY CREEK 6800 11.0 13.7 80 14.1 16.4 86
WHITE MILL 8700 16.2 19.4 84 17.5 21.5 81
WOLVERINE 7650 10.7 10.2 105 10.6 10.7 99
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Basin wide percent of average 90 95
WIND RIVER
BURROUGHS CREEK 8750 11.0 12.1 91 11.1 13.0 85
CASTLE CREEK 8400 5.8 -M * 6.9 -M *
COLD SPRINGS 9630 6.2 6.9 90 7.1 8.0 89
DEER PARK 9700 8.7 13.9 63 13.5 17.0 79
HOBBS PARK 10100 11.5 11.4 101 11.1 9.4 118
LITTLE WARM 9370 5.9 9.1 65 8.1 10.4 78
SOUTH PASS 9040 10.9 13.5 81 10.6 14.3 74
ST. LAWRENCE ALT 8620 4.5 5.6 80 6.5 6.6 98
TOGWOTEE PASS 9580 16.5 19.7 84 18.3 19.6 93
TOWNSEND CREEK 8700 7.1 6.6 108 9.5 8.4 113
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Basin wide percent of average 83 90
BIGHORN BASIN
BALD MTN. 9380 14.4 15.3 94 11.0 13.4 82
BEAR TRAP MEADOW 8200 5.6 4.1 137 6.2 6.2 100
BLACKWATER 9780 19.3 19.5 99 18.9 16.4 115
BONE SPRINGS DIV 9350 14.9 12.4 120 11.9 11.0 108
EVENING STAR 9200 22.1 23.8 93 23.8 20.7 115
GRAVE SPRINGS 8550 6.3 6.7 94 7.7 7.3 105
KIRWIN 9550 9.7 8.8 110 11.5 8.7 132
MARQUETTE 8760 7.5 -M * 10.5 7.1 148
MIDDLE POWDER 7760 7.7 8.4 92 8.5 9.2 92
OWL CREEK 8975 3.9 3.9 100 4.5 4.2 107
POWDER RIVER PASS 9480 8.1 8.3 98 9.8 9.5 103
SHELL CREEK 9580 12.8 11.2 114 11.0 10.4 106
SYLVAN LAKE 8420 13.9 18.0 77 18.8 17.1 110
SYLVAN ROAD 7120 10.6 10.8 98 14.1 15.0 94
TIMBER CREEK 7950 4.2 4.0 105 7.7 5.1 151
YOUNTS PEAK 8350 12.7 14.1 90 12.4 13.0 95
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Basin wide percent of average 98 108
SHOSHONE RIVER
BLACKWATER 9780 19.3 19.5 99 18.9 16.4 115
EVENING STAR 9200 22.1 23.8 93 23.8 20.7 115
KIRWIN 9550 9.7 8.8 110 11.5 8.7 132
MARQUETTE 8760 7.5 -M * 10.5 7.1 148
SYLVAN LAKE 8420 13.9 18.0 77 18.8 17.1 110
SYLVAN ROAD 7120 10.6 10.8 98 14.1 15.0 94
YOUNTS PEAK 8350 12.7 14.1 90 12.4 13.0 95
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Basin wide percent of average 93 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 4.1 137 6.2 6.2 100
BIG GOOSE 7990 8.0 7.2 111 11.8 6.4 184
BONE SPRINGS DIV 9350 14.9 12.4 120 11.9 11.0 108
BURGESS JUNCTION 7880 9.6 8.5 113 11.9 9.0 132
CLOUD PEAK RESERVOIR 9860 12.8 9.5 135 11.9 9.3 128
DOME LAKE 8880 11.2 9.2 122 12.0 9.8 122
GRAVE SPRINGS 8550 6.3 6.7 94 7.7 7.3 105
HANSEN SAWMILL 8360 4.7 4.9 96 6.7 6.0 112
LITTLE GOOSE 8870 8.9 -M * 13.5 -M *
MIDDLE POWDER 7760 7.7 8.4 92 8.5 9.2 92
POWDER RIVER PASS 9480 8.1 8.3 98 9.8 9.5 103
SOLDIER PARK 8720 10.1 -M * 8.1 -M *
SUCKER CREEK 8880 11.4 8.6 133 11.8 10.0 118
TIE CREEK 6870 5.7 4.6 124 11.7 7.5 156
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Basin wide percent of average 115 120
BELLE FOURCHE
BLIND PARK 6890 5.9 6.3 94 6.5 8.8 74
COLE CANYON 5910 4.4 5.4 81 5.8 5.2 112
NORTH RAPID CREEK 6130 5.8 6.3 92 5.6 7.1 79
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Basin wide percent of average 89 85
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 18.3 -M * 19.8 -M *
CINNABAR PARK 9574 14.2 15.3 93 17.4 16.5 105
COLUMBINE 9160 15.1 20.6 73 15.9 19.7 81
DIVIDE PEAK 8880 12.6 14.8 85 16.2 16.0 101
ELK RIVER 8700 12.1 15.1 80 12.8 15.1 85
JOE WRIGHT 10120 11.9 16.3 73 15.7 19.0 83
NORTH FRENCH CREEK 10130 17.0 21.3 80 17.1 19.1 90
OLD BATTLE 10000 18.8 24.5 77 22.2 26.6 83
SAGE CREEK BASIN 7850 12.5 8.6 145 8.8 9.3 95
SOUTH BRUSH CREEK 8440 7.0 9.2 76 10.1 12.7 80
TOWER 10500 24.5 35.6 69 25.1 30.1 83
WEBBER SPRINGS 9250 14.4 19.7 73 18.1 20.8 87
WILLOW CREEK PASS 9540 -M 9.0 * 7.5 9.8 77
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Basin wide percent of average 80 87
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.8 18.0 77 15.1 16.5 92
CASPER MTN. 7900 15.9 10.6 150 15.7 10.4 151
DEADMAN HILL 10220 14.1 12.3 115 13.2 12.4 106
DEER PARK 9700 8.7 13.9 63 13.5 17.0 79
LAPRELE CREEK 8375 7.8 8.4 93 10.3 9.4 110
RENO HILL 8400 13.3 9.7 137 14.8 10.8 137
ROACH 9700 11.3 13.2 86 14.2 13.8 103
SAND LAKE 10050 19.9 23.5 85 19.6 18.2 108
SOUTH PASS 9040 10.9 13.5 81 10.6 14.3 74
WINDY PEAK 7900 6.3 5.6 112 8.0 8.0 100
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Basin wide percent of average 95 103
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.0 9.1 110 10.3 11.6 89
DIVIDE PEAK 8880 12.6 14.8 85 16.2 16.0 101
OLD BATTLE 10000 18.8 24.5 77 22.2 26.6 83
SANDSTONE RS 8150 9.5 11.7 81 10.6 14.8 72
WHISKEY PARK 8950 17.5 22.3 78 20.8 22.2 94
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Basin wide percent of average 83 88
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.2 11.4 89 10.5 10.7 98
BLIND BULL SUM 8650 16.9 21.7 78 14.1 18.0 78
EAST RIM DIVIDE 7930 9.2 10.4 88 9.8 9.6 102
ELKHART PARK G.S. 9400 9.6 10.5 91 11.0 10.3 107
GROS VENTRE SUMMIT 8750 7.5 10.8 69 8.3 10.1 82
GUNSIGHT PASS 9820 9.3 -M * 10.3 -M *
KENDALL R.S. 7740 11.4 11.6 98 12.5 11.7 107
LOOMIS PARK 8240 11.1 13.5 82 13.2 14.0 94
NEW FORK LAKE 8340 9.0 9.1 99 8.4 9.1 92
POCKET CREEK 9360 7.7 -M * 10.1 -M *
SNIDER BASIN 8060 9.7 11.7 83 10.1 13.0 78
SPRING CREEK DIVIDE 9000 17.3 20.8 83 17.8 21.3 84
TRIPLE PEAK 8500 16.7 19.7 85 19.4 19.4 100
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Basin wide percent of average 85 92
LOWER GREEN RIVER
HAMS FORK 7840 8.0 10.2 78 8.0 9.8 82
HEWINTA 9519 6.5 8.4 77 9.9 10.9 91
HICKERSON PARK 9145 7.6 5.5 138 10.4 5.9 176
HOLE-IN-ROCK 9150 6.6 5.3 125 9.6 5.5 175
INDIAN CREEK 9425 15.6 20.9 75 14.3 19.9 72
KELLEY R.S. 8180 10.8 13.0 83 12.9 16.3 79
STEEL CREEK PARK 10200 9.7 11.7 83 11.1 12.1 92
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Basin wide percent of average 86 95
UPPER BEAR RIVER
BUG LAKE 7950 11.0 16.0 69 12.6 15.2 83
HAYDEN FORK 9212 7.9 12.2 65 13.0 16.1 81
KELLEY R.S. 8180 10.8 13.0 83 12.9 16.3 79
LILY LAKE 9156 6.8 10.1 67 9.1 13.5 67
MONTE CRISTO 8960 14.3 22.9 62 14.7 19.9 74
SALT RIVER SUMMIT 7760 9.1 11.4 80 9.7 14.9 65
TRIAL LAKE 9992 10.0 19.3 52 10.4 19.2 54
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Basin wide percent of average 67 72
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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.