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 23 , 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 15.3 95 21.2 17.7 120
COTTONWOOD CREEK 7670 18.6 17.2 108 20.2 21.9 92
GRAND TARGHEE 9260 37.7 -M * 25.8 -M *
GRANITE CREEK 6770 13.8 15.2 91 19.2 16.5 116
GRASSY LAKE 7265 24.7 28.0 88 32.5 29.6 110
GROS VENTRE SUMMIT 8750 10.9 10.9 100 12.1 10.2 119
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
LEWIS LAKE DIVIDE 7850 25.2 28.1 90 29.8 29.9 100
PHILLIPS BENCH 8200 24.3 22.6 108 27.4 23.4 117
SALT RIVER SUMMIT 7760 10.7 11.5 93 12.7 15.0 85
SNAKE RIVER STATION 6920 13.4 15.6 86 21.7 18.6 117
SPRING CREEK DIVIDE 9000 18.0 21.0 86 18.4 21.5 86
THUMB DIVIDE 7980 13.0 14.4 90 15.7 15.2 103
TOGWOTEE PASS 9580 21.5 19.8 109 23.6 19.7 120
TWO OCEAN PLATEAU 9240 28.4 22.3 127 23.3 22.2 105
WILLOW CREEK 8380 24.0 24.1 100 29.6 25.7 115
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Basin wide percent of average 98 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.7 19.1 108 19.4 16.4 118
BLACK BEAR 8170 37.1 31.5 118 33.5 31.5 106
CANYON 7870 13.8 10.9 127 17.3 12.5 138
FISHER CREEK 9100 34.5 28.4 121 -M 29.1 *
MADISON PLATEAU 7750 24.0 19.9 121 26.9 21.0 128
NORTHEAST ENTRANCE 7350 7.3 9.4 78 10.9 10.4 105
PARKER PEAK 9400 20.3 17.5 116 -M 13.1 *
SYLVAN LAKE 8420 16.3 18.1 90 21.0 17.2 122
THUMB DIVIDE 7980 13.0 14.4 90 15.7 15.2 103
TWO OCEAN PLATEAU 9240 28.4 22.3 127 23.3 22.2 105
WHISKEY CREEK 6800 15.2 13.8 110 21.2 16.5 128
WHITE MILL 8700 22.0 19.5 113 -M 21.6 *
WOLVERINE 7650 8.3 10.3 81 10.7 10.7 100
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Basin wide percent of average 111 115
WIND RIVER
BURROUGHS CREEK 8750 12.8 12.2 105 15.6 13.1 119
COLD SPRINGS 9630 5.3 6.9 77 8.3 8.1 102
DEER PARK 9700 11.0 13.9 79 15.5 17.1 91
HOBBS PARK 10100 10.0 11.5 87 10.7 9.5 113
LITTLE WARM 9370 7.8 9.2 85 11.1 10.4 107
SOUTH PASS 9040 10.3 13.5 76 13.0 14.4 90
ST. LAWRENCE ALT 8620 5.0 5.6 89 6.5 6.7 97
TOGWOTEE PASS 9580 21.5 19.8 109 23.6 19.7 120
TOWNSEND CREEK 8700 6.1 6.7 91 9.1 8.5 107
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Basin wide percent of average 90 105
BIGHORN BASIN
BALD MTN. 9380 12.7 15.4 82 12.2 13.5 90
BEAR TRAP MEADOW 8200 6.2 4.1 151 6.7 6.2 108
BLACKWATER 9780 19.7 19.7 100 18.5 16.5 112
BONE SPRINGS DIV 9350 12.7 12.5 102 13.9 11.1 125
EVENING STAR 9200 23.6 24.0 98 -M 20.8 *
GRAVE SPRINGS 8550 6.8 6.8 100 7.7 7.4 104
KIRWIN 9550 9.8 8.8 111 11.9 8.8 135
MARQUETTE 8760 3.3 6.6 50 7.0 7.2 97
MIDDLE POWDER 7760 7.4 8.6 86 6.5 9.2 71
OWL CREEK 8975 4.1 3.9 105 5.4 4.2 129
POWDER RIVER PASS 9480 9.1 8.3 110 11.1 9.6 116
SHELL CREEK 9580 12.4 11.3 110 12.1 10.5 115
SYLVAN LAKE 8420 16.3 18.1 90 21.0 17.2 122
SYLVAN ROAD 7120 8.8 10.9 81 17.5 15.1 116
TIMBER CREEK 7950 2.5 4.0 62 6.1 5.2 117
YOUNTS PEAK 8350 13.7 14.2 96 15.1 13.1 115
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Basin wide percent of average 95 112
SHOSHONE RIVER
BLACKWATER 9780 19.7 19.7 100 18.5 16.5 112
EVENING STAR 9200 23.6 24.0 98 -M 20.8 *
KIRWIN 9550 9.8 8.8 111 11.9 8.8 135
MARQUETTE 8760 3.3 6.6 50 7.0 7.2 97
SYLVAN LAKE 8420 16.3 18.1 90 21.0 17.2 122
SYLVAN ROAD 7120 8.8 10.9 81 17.5 15.1 116
YOUNTS PEAK 8350 13.7 14.2 96 15.1 13.1 115
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Basin wide percent of average 93 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.2 4.1 151 6.7 6.2 108
BIG GOOSE 7990 6.0 7.3 82 8.9 6.5 137
BONE SPRINGS DIV 9350 12.7 12.5 102 13.9 11.1 125
BURGESS JUNCTION 7880 8.5 8.6 99 10.1 9.1 111
CLOUD PEAK RESERVOIR 9860 11.5 9.5 121 11.3 9.4 120
DOME LAKE 8880 7.8 9.2 85 11.3 9.8 115
GRAVE SPRINGS 8550 6.8 6.8 100 7.7 7.4 104
HANSEN SAWMILL 8360 4.8 4.9 98 7.1 6.0 118
MIDDLE POWDER 7760 7.4 8.6 86 6.5 9.2 71
POWDER RIVER PASS 9480 9.1 8.3 110 11.1 9.6 116
SUCKER CREEK 8880 10.0 8.7 115 11.9 10.1 118
TIE CREEK 6870 4.8 4.6 104 8.7 7.6 114
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Basin wide percent of average 103 113
BELLE FOURCHE
BLIND PARK 6890 5.6 6.4 87 8.4 8.9 94
COLE CANYON 5910 4.9 5.4 91 6.0 5.3 113
NORTH RAPID CREEK 6130 6.3 6.4 98 6.5 7.2 90
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Basin wide percent of average 92 98
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.5 20.7 99 22.9 19.8 116
DIVIDE PEAK 8880 19.3 14.9 130 19.6 16.2 121
ELK RIVER 8700 20.4 15.2 134 19.8 15.3 129
JOE WRIGHT 10120 18.5 16.4 113 22.0 19.1 115
NORTH FRENCH CREEK 10130 24.0 21.5 112 23.8 19.2 124
OLD BATTLE 10000 27.0 24.7 109 31.8 26.9 118
SAGE CREEK BASIN 7850 14.7 8.6 171 15.6 9.4 166
SOUTH BRUSH CREEK 8440 10.0 9.3 108 13.6 12.7 107
TOWER 10500 35.1 35.8 98 -M 30.4 *
WEBBER SPRINGS 9250 20.9 19.9 105 24.5 21.0 117
WILLOW CREEK PASS 9540 12.5 9.1 137 12.9 9.8 132
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Basin wide percent of average 114 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.8 18.1 93 17.5 16.6 105
CASPER MTN. 7900 8.9 10.7 83 10.7 10.5 102
DEADMAN HILL 10220 13.5 12.4 109 13.9 12.5 111
DEER PARK 9700 11.0 13.9 79 15.5 17.1 91
LAPRELE CREEK 8375 5.6 8.5 66 8.2 9.5 86
RENO HILL 8400 9.2 9.8 94 10.9 10.9 100
ROACH 9700 15.6 13.3 117 18.2 14.0 130
SAND LAKE 10050 21.6 23.7 91 21.6 18.4 117
SOUTH PASS 9040 10.3 13.5 76 13.0 14.4 90
WINDY PEAK 7900 6.2 5.7 109 7.7 8.1 95
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Basin wide percent of average 92 104
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.4 9.1 147 14.1 11.7 121
DIVIDE PEAK 8880 19.3 14.9 130 19.6 16.2 121
OLD BATTLE 10000 27.0 24.7 109 31.8 26.9 118
SANDSTONE RS 8150 14.3 11.8 121 17.9 14.9 120
WHISKEY PARK 8950 25.3 22.4 113 29.0 22.4 129
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Basin wide percent of average 120 122
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.4 11.5 90 10.6 10.8 98
BLIND BULL SUM 8650 19.5 21.8 89 14.9 18.2 82
EAST RIM DIVIDE 7930 7.0 10.4 67 9.3 9.7 96
ELKHART PARK G.S. 9400 9.1 10.5 87 10.0 10.4 96
GROS VENTRE SUMMIT 8750 10.9 10.9 100 12.1 10.2 119
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
KENDALL R.S. 7740 9.5 11.7 81 11.3 11.9 95
LOOMIS PARK 8240 12.7 13.7 93 14.4 14.1 102
NEW FORK LAKE 8340 7.8 9.2 85 8.0 9.2 87
SNIDER BASIN 8060 10.3 11.8 87 11.3 13.1 86
SPRING CREEK DIVIDE 9000 18.0 21.0 86 18.4 21.5 86
TRIPLE PEAK 8500 18.5 19.8 93 21.7 19.6 111
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Basin wide percent of average 88 95
LOWER GREEN RIVER
HAMS FORK 7840 9.3 10.3 90 8.0 9.9 81
HEWINTA 9519 9.8 8.5 115 13.5 11.0 123
HICKERSON PARK 9145 5.7 5.5 104 8.0 5.9 136
HOLE-IN-ROCK 9150 4.7 5.3 89 7.9 5.5 144
INDIAN CREEK 9425 18.1 21.0 86 13.7 20.1 68
KELLEY R.S. 8180 11.3 13.2 86 13.9 16.4 85
STEEL CREEK PARK 10200 11.3 11.9 95 14.8 12.2 121
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Basin wide percent of average 93 99
UPPER BEAR RIVER
BUG LAKE 7950 14.3 16.2 88 13.9 15.3 91
HAYDEN FORK 9212 14.8 12.3 120 18.8 16.2 116
KELLEY R.S. 8180 11.3 13.2 86 13.9 16.4 85
LILY LAKE 9156 11.6 10.2 114 14.5 13.6 107
MONTE CRISTO 8960 22.5 23.2 97 21.6 20.0 108
SALT RIVER SUMMIT 7760 10.7 11.5 93 12.7 15.0 85
TRIAL LAKE 9992 16.3 19.4 84 19.4 19.3 101
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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.