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 FRIDAY: FEBRUARY 22 , 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 15.2 95 21.2 17.6 120
COTTONWOOD CREEK 7670 18.5 17.1 108 20.2 21.7 93
GRAND TARGHEE 9260 37.7 -M * 25.7 -M *
GRANITE CREEK 6770 13.8 15.1 91 19.2 16.4 117
GRASSY LAKE 7265 24.7 27.8 89 32.5 29.4 111
GROS VENTRE SUMMIT 8750 10.9 10.8 101 12.1 10.1 120
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
LEWIS LAKE DIVIDE 7850 25.1 27.9 90 29.8 29.7 100
PHILLIPS BENCH 8200 24.2 22.4 108 27.4 23.2 118
SALT RIVER SUMMIT 7760 10.6 11.4 93 12.6 14.9 85
SNAKE RIVER STATION 6920 13.4 15.5 86 21.7 18.4 118
SPRING CREEK DIVIDE 9000 17.9 20.8 86 18.3 21.3 86
THUMB DIVIDE 7980 13.0 14.3 91 15.6 15.1 103
TOGWOTEE PASS 9580 21.5 19.7 109 23.6 19.6 120
TWO OCEAN PLATEAU 9240 28.4 22.2 128 23.3 22.0 106
WILLOW CREEK 8380 24.0 24.0 100 29.6 25.5 116
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Basin wide percent of average 99 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.7 19.0 109 19.5 16.3 120
BLACK BEAR 8170 37.1 31.2 119 33.5 31.2 107
CANYON 7870 13.8 10.9 127 17.2 12.4 139
FISHER CREEK 9100 34.5 28.2 122 31.5 28.9 109
MADISON PLATEAU 7750 24.1 19.8 122 26.9 20.8 129
NORTHEAST ENTRANCE 7350 7.3 9.3 78 10.9 10.3 106
PARKER PEAK 9400 20.3 17.4 117 19.0 13.0 146
SYLVAN LAKE 8420 16.3 18.0 91 21.0 17.1 123
THUMB DIVIDE 7980 13.0 14.3 91 15.6 15.1 103
TWO OCEAN PLATEAU 9240 28.4 22.2 128 23.3 22.0 106
WHISKEY CREEK 6800 15.1 13.7 110 21.2 16.4 129
WHITE MILL 8700 22.0 19.4 113 -M 21.5 *
WOLVERINE 7650 8.3 10.2 81 10.8 10.7 101
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Basin wide percent of average 112 117
WIND RIVER
BURROUGHS CREEK 8750 12.8 12.1 106 15.6 13.0 120
COLD SPRINGS 9630 5.3 6.9 77 8.3 8.0 104
DEER PARK 9700 11.0 13.9 79 15.5 17.0 91
HOBBS PARK 10100 10.0 11.4 88 10.7 9.4 114
LITTLE WARM 9370 7.7 9.1 85 11.1 10.4 107
SOUTH PASS 9040 10.2 13.5 76 13.0 14.3 91
ST. LAWRENCE ALT 8620 4.9 5.6 88 6.5 6.7 97
TOGWOTEE PASS 9580 21.5 19.7 109 23.6 19.6 120
TOWNSEND CREEK 8700 6.0 6.6 91 9.1 8.4 108
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Basin wide percent of average 90 106
BIGHORN BASIN
BALD MTN. 9380 12.7 15.3 83 12.3 13.4 92
BEAR TRAP MEADOW 8200 6.1 4.1 149 6.8 6.2 110
BLACKWATER 9780 19.7 19.5 101 18.5 16.4 113
BONE SPRINGS DIV 9350 12.7 12.4 102 14.1 11.0 128
EVENING STAR 9200 23.7 23.8 100 26.2 20.7 127
GRAVE SPRINGS 8550 6.8 6.7 101 7.8 7.3 107
KIRWIN 9550 9.8 8.8 111 11.9 8.7 137
MARQUETTE 8760 3.3 6.6 50 7.2 7.1 101
MIDDLE POWDER 7760 7.4 8.4 88 7.0 9.2 76
OWL CREEK 8975 4.1 3.9 105 5.4 4.2 129
POWDER RIVER PASS 9480 9.1 8.3 110 11.1 9.5 117
SHELL CREEK 9580 12.4 11.2 111 12.1 10.4 116
SYLVAN LAKE 8420 16.3 18.0 91 21.0 17.1 123
SYLVAN ROAD 7120 8.8 10.8 81 17.5 15.1 116
TIMBER CREEK 7950 2.5 4.0 62 6.1 5.1 120
YOUNTS PEAK 8350 13.8 14.1 98 15.1 13.0 116
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Basin wide percent of average 96 115
SHOSHONE RIVER
BLACKWATER 9780 19.7 19.5 101 18.5 16.4 113
EVENING STAR 9200 23.7 23.8 100 26.2 20.7 127
KIRWIN 9550 9.8 8.8 111 11.9 8.7 137
MARQUETTE 8760 3.3 6.6 50 7.2 7.1 101
SYLVAN LAKE 8420 16.3 18.0 91 21.0 17.1 123
SYLVAN ROAD 7120 8.8 10.8 81 17.5 15.1 116
YOUNTS PEAK 8350 13.8 14.1 98 15.1 13.0 116
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Basin wide percent of average 94 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 4.1 149 6.8 6.2 110
BIG GOOSE 7990 6.1 7.2 85 9.0 6.4 141
BONE SPRINGS DIV 9350 12.7 12.4 102 14.1 11.0 128
BURGESS JUNCTION 7880 8.6 8.5 101 10.2 9.0 113
CLOUD PEAK RESERVOIR 9860 11.6 9.5 122 11.7 9.3 126
DOME LAKE 8880 7.9 9.2 86 11.3 9.8 115
GRAVE SPRINGS 8550 6.8 6.7 101 7.8 7.3 107
HANSEN SAWMILL 8360 4.8 4.9 98 7.2 6.0 120
MIDDLE POWDER 7760 7.4 8.4 88 7.0 9.2 76
POWDER RIVER PASS 9480 9.1 8.3 110 11.1 9.5 117
SUCKER CREEK 8880 10.0 8.6 116 11.9 10.0 119
TIE CREEK 6870 4.8 4.6 104 8.7 7.5 116
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Basin wide percent of average 104 115
BELLE FOURCHE
BLIND PARK 6890 5.6 6.3 89 8.5 8.8 97
COLE CANYON 5910 4.9 5.4 91 5.9 5.2 113
NORTH RAPID CREEK 6130 6.3 6.3 100 6.6 7.1 93
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Basin wide percent of average 93 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.5 20.6 100 22.9 19.7 116
DIVIDE PEAK 8880 19.2 14.8 130 19.5 16.0 122
ELK RIVER 8700 20.4 15.1 135 19.8 15.1 131
JOE WRIGHT 10120 18.5 16.3 113 22.0 19.0 116
NORTH FRENCH CREEK 10130 23.8 21.3 112 23.7 19.1 124
OLD BATTLE 10000 26.9 24.5 110 31.8 26.6 120
SAGE CREEK BASIN 7850 14.6 8.6 170 15.5 9.3 167
SOUTH BRUSH CREEK 8440 9.9 9.2 108 13.6 12.7 107
TOWER 10500 35.1 35.6 99 -M 30.1 *
WEBBER SPRINGS 9250 20.8 19.7 106 24.4 20.8 117
WILLOW CREEK PASS 9540 12.4 9.0 138 12.9 9.8 132
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Basin wide percent of average 114 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.7 18.0 93 17.5 16.5 106
CASPER MTN. 7900 9.0 10.6 85 10.7 10.4 103
DEADMAN HILL 10220 13.5 12.3 110 14.0 12.4 113
DEER PARK 9700 11.0 13.9 79 15.5 17.0 91
LAPRELE CREEK 8375 5.6 8.4 67 8.1 9.4 86
RENO HILL 8400 9.1 9.7 94 10.9 10.8 101
ROACH 9700 15.6 13.2 118 18.1 13.8 131
SAND LAKE 10050 21.5 23.5 91 21.6 18.2 119
SOUTH PASS 9040 10.2 13.5 76 13.0 14.3 91
WINDY PEAK 7900 6.1 5.6 109 7.7 8.0 96
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Basin wide percent of average 92 105
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.4 9.1 147 14.1 11.6 122
DIVIDE PEAK 8880 19.2 14.8 130 19.5 16.0 122
OLD BATTLE 10000 26.9 24.5 110 31.8 26.6 120
SANDSTONE RS 8150 14.3 11.7 122 17.8 14.8 120
WHISKEY PARK 8950 25.3 22.3 113 28.9 22.2 130
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Basin wide percent of average 120 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.4 11.4 91 10.5 10.7 98
BLIND BULL SUM 8650 19.5 21.7 90 14.9 18.0 83
EAST RIM DIVIDE 7930 7.0 10.4 67 9.2 9.6 96
ELKHART PARK G.S. 9400 9.1 10.5 87 9.9 10.3 96
GROS VENTRE SUMMIT 8750 10.9 10.8 101 12.1 10.1 120
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
KENDALL R.S. 7740 9.4 11.6 81 11.3 11.7 97
LOOMIS PARK 8240 12.7 13.5 94 14.4 14.0 103
NEW FORK LAKE 8340 7.8 9.1 86 8.0 9.1 88
SNIDER BASIN 8060 10.2 11.7 87 11.3 13.0 87
SPRING CREEK DIVIDE 9000 17.9 20.8 86 18.3 21.3 86
TRIPLE PEAK 8500 18.4 19.7 93 21.6 19.4 111
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Basin wide percent of average 88 96
LOWER GREEN RIVER
HAMS FORK 7840 9.2 10.2 90 8.0 9.8 82
HEWINTA 9519 9.7 8.4 115 13.4 10.9 123
HICKERSON PARK 9145 5.4 5.5 98 7.7 5.9 131
HOLE-IN-ROCK 9150 4.6 5.3 87 7.9 5.5 144
INDIAN CREEK 9425 18.0 20.9 86 13.6 19.9 68
KELLEY R.S. 8180 11.2 13.0 86 13.7 16.3 84
STEEL CREEK PARK 10200 11.3 11.7 97 14.8 12.1 122
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Basin wide percent of average 93 98
UPPER BEAR RIVER
BUG LAKE 7950 14.2 16.0 89 13.8 15.2 91
HAYDEN FORK 9212 14.7 12.2 120 18.8 16.1 117
KELLEY R.S. 8180 11.2 13.0 86 13.7 16.3 84
LILY LAKE 9156 11.6 10.1 115 14.5 13.5 107
MONTE CRISTO 8960 22.4 22.9 98 21.6 19.9 109
SALT RIVER SUMMIT 7760 10.6 11.4 93 12.6 14.9 85
TRIAL LAKE 9992 16.2 19.3 84 19.4 19.2 101
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Basin wide percent of average 96 99
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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.