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 20 , 2008
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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 14.5 14.9 97 21.2 17.3 123
COTTONWOOD CREEK 7670 18.5 16.8 110 20.3 21.4 95
GRAND TARGHEE 9260 37.7 -M * 25.7 -M *
GRANITE CREEK 6770 13.7 14.8 93 19.1 16.1 119
GRASSY LAKE 7265 24.7 27.3 90 32.5 29.0 112
GROS VENTRE SUMMIT 8750 10.9 10.7 102 12.0 10.0 120
GUNSIGHT PASS 9820 10.2 -M * 11.8 -M *
LEWIS LAKE DIVIDE 7850 25.1 27.5 91 29.8 29.2 102
PHILLIPS BENCH 8200 24.2 22.1 110 27.4 22.9 120
SALT RIVER SUMMIT 7760 10.6 11.3 94 12.6 14.7 86
SNAKE RIVER STATION 6920 13.4 15.3 88 21.6 18.2 119
SPRING CREEK DIVIDE 9000 18.0 20.5 88 18.3 21.0 87
THUMB DIVIDE 7980 13.0 14.1 92 15.6 14.8 105
TOGWOTEE PASS 9580 21.5 19.4 111 23.6 19.3 122
TWO OCEAN PLATEAU 9240 28.4 21.9 130 23.2 21.6 107
WILLOW CREEK 8380 24.0 23.6 102 29.6 25.1 118
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Basin wide percent of average 100 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.7 18.9 110 19.5 16.0 122
BLACK BEAR 8170 37.1 30.7 121 33.5 30.7 109
CANYON 7870 13.8 10.7 129 17.2 12.2 141
FISHER CREEK 9100 34.6 27.9 124 31.5 28.4 111
MADISON PLATEAU 7750 24.0 19.5 123 26.4 20.5 129
NORTHEAST ENTRANCE 7350 -M 9.2 * -M 10.1 *
PARKER PEAK 9400 20.2 17.1 118 18.9 12.8 148
SYLVAN LAKE 8420 16.3 17.7 92 20.9 16.9 124
THUMB DIVIDE 7980 13.0 14.1 92 15.6 14.8 105
TWO OCEAN PLATEAU 9240 28.4 21.9 130 23.2 21.6 107
WHISKEY CREEK 6800 15.1 13.5 112 21.2 16.1 132
WHITE MILL 8700 22.0 19.1 115 22.6 21.2 107
WOLVERINE 7650 8.4 10.1 83 10.9 10.5 104
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Basin wide percent of average 115 118
WIND RIVER
BURROUGHS CREEK 8750 12.8 11.9 108 15.6 12.9 121
COLD SPRINGS 9630 5.4 6.8 79 8.3 7.9 105
DEER PARK 9700 11.0 13.9 79 15.5 16.7 93
HOBBS PARK 10100 10.0 11.3 88 10.8 9.3 116
LITTLE WARM 9370 7.8 8.9 88 11.1 10.2 109
SOUTH PASS 9040 10.3 13.4 77 13.1 14.1 93
ST. LAWRENCE ALT 8620 5.0 5.5 91 6.6 6.6 100
TOGWOTEE PASS 9580 21.5 19.4 111 23.6 19.3 122
TOWNSEND CREEK 8700 6.1 6.6 92 9.1 8.3 110
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Basin wide percent of average 92 108
BIGHORN BASIN
BALD MTN. 9380 12.7 15.1 84 12.3 13.3 92
BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111
BLACKWATER 9780 19.7 19.2 103 18.5 16.1 115
BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 10.9 129
EVENING STAR 9200 23.6 23.4 101 26.2 20.4 128
GRAVE SPRINGS 8550 6.8 6.6 103 7.8 7.2 108
KIRWIN 9550 9.9 8.7 114 11.9 8.6 138
MARQUETTE 8760 3.4 6.6 52 7.2 7.0 103
MIDDLE POWDER 7760 7.5 8.3 90 7.0 9.1 77
OWL CREEK 8975 4.1 3.9 105 5.4 4.2 129
POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.4 118
SHELL CREEK 9580 12.4 11.1 112 12.1 10.3 117
SYLVAN LAKE 8420 16.3 17.7 92 20.9 16.9 124
SYLVAN ROAD 7120 8.8 10.6 83 17.4 14.9 117
TIMBER CREEK 7950 2.6 4.0 65 6.6 5.1 129
YOUNTS PEAK 8350 13.8 13.9 99 15.1 12.8 118
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Basin wide percent of average 98 116
SHOSHONE RIVER
BLACKWATER 9780 19.7 19.2 103 18.5 16.1 115
EVENING STAR 9200 23.6 23.4 101 26.2 20.4 128
KIRWIN 9550 9.9 8.7 114 11.9 8.6 138
MARQUETTE 8760 3.4 6.6 52 7.2 7.0 103
SYLVAN LAKE 8420 16.3 17.7 92 20.9 16.9 124
SYLVAN ROAD 7120 8.8 10.6 83 17.4 14.9 117
YOUNTS PEAK 8350 13.8 13.9 99 15.1 12.8 118
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Basin wide percent of average 95 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111
BIG GOOSE 7990 6.2 7.1 87 9.0 6.4 141
BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 10.9 129
BURGESS JUNCTION 7880 8.6 8.4 102 10.2 8.9 115
CLOUD PEAK RESERVOIR 9860 11.6 9.3 125 11.7 9.2 127
DOME LAKE 8880 8.0 9.1 88 11.3 9.7 116
GRAVE SPRINGS 8550 6.8 6.6 103 7.8 7.2 108
HANSEN SAWMILL 8360 4.9 4.8 102 7.2 5.9 122
MIDDLE POWDER 7760 7.5 8.3 90 7.0 9.1 77
POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.4 118
SUCKER CREEK 8880 10.0 8.5 118 11.9 9.9 120
TIE CREEK 6870 4.9 4.6 107 8.8 7.5 117
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Basin wide percent of average 106 117
BELLE FOURCHE
BLIND PARK 6890 5.6 6.2 90 8.5 8.7 98
COLE CANYON 5910 4.9 5.3 92 5.9 5.2 113
NORTH RAPID CREEK 6130 6.4 6.2 103 6.6 7.0 94
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Basin wide percent of average 95 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.6 20.2 102 22.8 19.4 118
DIVIDE PEAK 8880 19.3 14.6 132 19.5 15.8 123
ELK RIVER 8700 20.3 14.9 136 19.7 14.9 132
JOE WRIGHT 10120 18.5 16.1 115 21.9 18.7 117
NORTH FRENCH CREEK 10130 23.7 21.0 113 23.6 18.8 126
OLD BATTLE 10000 26.9 24.1 112 31.5 26.2 120
SAGE CREEK BASIN 7850 14.6 8.5 172 15.5 9.2 168
SOUTH BRUSH CREEK 8440 9.8 9.0 109 13.4 12.5 107
TOWER 10500 35.1 35.1 100 30.3 29.6 102
WEBBER SPRINGS 9250 20.8 19.4 107 24.4 20.5 119
WILLOW CREEK PASS 9540 12.5 8.9 140 13.0 9.6 135
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Basin wide percent of average 116 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.7 17.7 94 17.5 16.2 108
CASPER MTN. 7900 8.9 10.5 85 10.7 10.3 104
DEADMAN HILL 10220 13.4 12.1 111 13.9 12.2 114
DEER PARK 9700 11.0 13.9 79 15.5 16.7 93
LAPRELE CREEK 8375 -M 8.3 * -M 9.3 *
RENO HILL 8400 9.1 9.6 95 11.0 10.6 104
ROACH 9700 15.6 13.0 120 18.2 13.6 134
SAND LAKE 10050 21.5 23.1 93 21.6 18.0 120
SOUTH PASS 9040 10.3 13.4 77 13.1 14.1 93
WINDY PEAK 7900 6.2 5.5 113 7.7 7.9 97
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Basin wide percent of average 95 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.1 8.9 147 14.0 11.4 123
DIVIDE PEAK 8880 19.3 14.6 132 19.5 15.8 123
OLD BATTLE 10000 26.9 24.1 112 31.5 26.2 120
SANDSTONE RS 8150 14.3 11.5 124 17.8 14.5 123
WHISKEY PARK 8950 25.2 21.9 115 28.7 21.9 131
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Basin wide percent of average 122 124
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.4 11.2 93 10.6 10.5 101
BLIND BULL SUM 8650 19.5 21.4 91 14.9 17.8 84
EAST RIM DIVIDE 7930 7.1 10.2 70 9.2 9.4 98
ELKHART PARK G.S. 9400 9.2 10.3 89 10.0 10.2 98
GROS VENTRE SUMMIT 8750 10.9 10.7 102 12.0 10.0 120
GUNSIGHT PASS 9820 10.2 -M * 11.8 -M *
KENDALL R.S. 7740 9.5 11.4 83 11.3 11.5 98
LOOMIS PARK 8240 12.6 13.3 95 14.5 13.7 106
NEW FORK LAKE 8340 7.8 9.0 87 8.0 9.0 89
SNIDER BASIN 8060 10.2 11.5 89 11.4 12.8 89
SPRING CREEK DIVIDE 9000 18.0 20.5 88 18.3 21.0 87
TRIPLE PEAK 8500 18.4 19.4 95 21.6 19.1 113
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Basin wide percent of average 90 98
LOWER GREEN RIVER
HAMS FORK 7840 9.2 10.0 92 8.0 9.7 82
HEWINTA 9519 9.7 8.3 117 13.4 10.7 125
HICKERSON PARK 9145 5.3 5.4 98 7.6 5.8 131
HOLE-IN-ROCK 9150 4.6 5.2 88 7.9 5.4 146
INDIAN CREEK 9425 18.1 20.5 88 13.5 19.6 69
KELLEY R.S. 8180 -M 12.8 * -M 16.0 *
STEEL CREEK PARK 10200 11.1 11.5 97 14.6 11.9 123
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Basin wide percent of average 95 103
UPPER BEAR RIVER
BUG LAKE 7950 14.2 15.8 90 13.8 15.0 92
HAYDEN FORK 9212 14.5 12.0 121 18.5 15.8 117
KELLEY R.S. 8180 -M 12.8 * -M 16.0 *
LILY LAKE 9156 11.3 9.9 114 14.3 13.2 108
MONTE CRISTO 8960 22.3 22.5 99 21.6 19.5 111
SALT RIVER SUMMIT 7760 10.6 11.3 94 12.6 14.7 86
TRIAL LAKE 9992 16.1 18.9 85 19.4 18.8 103
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Basin wide percent of average 98 103
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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 1961-90.
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.