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 MONDAY: FEBRUARY 18 , 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 14.7 99 21.1 17.0 124
COTTONWOOD CREEK 7670 18.4 16.5 112 20.3 21.1 96
GRAND TARGHEE 9260 37.5 -M * 25.6 -M *
GRANITE CREEK 6770 13.7 14.6 94 19.1 15.9 120
GRASSY LAKE 7265 24.7 26.9 92 32.4 28.5 114
GROS VENTRE SUMMIT 8750 10.8 10.6 102 12.0 9.8 122
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
LEWIS LAKE DIVIDE 7850 24.9 27.0 92 29.9 28.7 104
PHILLIPS BENCH 8200 24.1 21.7 111 27.3 22.5 121
SALT RIVER SUMMIT 7760 10.5 11.1 95 12.5 14.5 86
SNAKE RIVER STATION 6920 13.4 15.0 89 21.6 17.9 121
SPRING CREEK DIVIDE 9000 17.9 20.2 89 18.2 20.7 88
THUMB DIVIDE 7980 13.0 13.8 94 15.6 14.6 107
TOGWOTEE PASS 9580 21.5 19.2 112 23.5 19.0 124
TWO OCEAN PLATEAU 9240 28.3 21.6 131 23.0 21.3 108
WILLOW CREEK 8380 24.0 23.3 103 29.4 24.8 119
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Basin wide percent of average 101 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.6 18.6 111 19.1 15.8 121
BLACK BEAR 8170 37.0 30.1 123 33.5 30.2 111
CANYON 7870 13.8 10.4 133 17.1 12.1 141
FISHER CREEK 9100 34.6 27.3 127 -M 28.0 *
MADISON PLATEAU 7750 23.9 19.1 125 26.4 20.1 131
NORTHEAST ENTRANCE 7350 7.4 9.0 82 10.9 10.0 109
PARKER PEAK 9400 20.2 16.8 120 -M 12.6 *
SYLVAN LAKE 8420 16.3 17.3 94 20.8 16.6 125
THUMB DIVIDE 7980 13.0 13.8 94 15.6 14.6 107
TWO OCEAN PLATEAU 9240 28.3 21.6 131 23.0 21.3 108
WHISKEY CREEK 6800 15.2 13.1 116 21.2 15.8 134
WHITE MILL 8700 22.0 18.6 118 -M 20.8 *
WOLVERINE 7650 8.4 9.9 85 10.7 10.4 103
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Basin wide percent of average 116 119
WIND RIVER
BURROUGHS CREEK 8750 12.7 11.6 109 15.5 12.7 122
COLD SPRINGS 9630 5.3 6.6 80 8.3 7.8 106
DEER PARK 9700 11.0 13.9 79 15.5 16.5 94
HOBBS PARK 10100 10.0 11.0 91 10.7 9.1 118
LITTLE WARM 9370 7.7 8.8 88 11.0 10.1 109
SOUTH PASS 9040 10.2 13.0 78 13.1 13.9 94
ST. LAWRENCE ALT 8620 5.0 5.4 93 6.6 6.5 102
TOGWOTEE PASS 9580 21.5 19.2 112 23.5 19.0 124
TOWNSEND CREEK 8700 5.9 6.5 91 9.1 8.2 111
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Basin wide percent of average 93 109
BIGHORN BASIN
BALD MTN. 9380 12.4 14.8 84 11.9 13.1 91
BEAR TRAP MEADOW 8200 6.1 4.0 152 6.6 6.0 110
BLACKWATER 9780 19.7 18.8 105 18.4 15.9 116
BONE SPRINGS DIV 9350 12.6 12.0 105 13.9 10.8 129
EVENING STAR 9200 23.6 23.0 103 -M 20.1 *
GRAVE SPRINGS 8550 6.7 6.5 103 7.8 7.1 110
KIRWIN 9550 9.8 8.5 115 11.9 8.5 140
MARQUETTE 8760 3.3 6.4 52 6.9 6.9 100
MIDDLE POWDER 7760 7.4 8.2 90 6.5 9.0 72
OWL CREEK 8975 4.0 3.8 105 5.4 4.1 132
POWDER RIVER PASS 9480 9.0 8.0 112 10.9 9.3 117
SHELL CREEK 9580 12.3 10.9 113 12.1 10.2 119
SYLVAN LAKE 8420 16.3 17.3 94 20.8 16.6 125
SYLVAN ROAD 7120 8.8 10.5 84 17.4 14.7 118
TIMBER CREEK 7950 2.5 4.0 62 6.2 5.0 124
YOUNTS PEAK 8350 13.7 13.6 101 15.0 12.6 119
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Basin wide percent of average 99 115
SHOSHONE RIVER
BLACKWATER 9780 19.7 18.8 105 18.4 15.9 116
EVENING STAR 9200 23.6 23.0 103 -M 20.1 *
KIRWIN 9550 9.8 8.5 115 11.9 8.5 140
MARQUETTE 8760 3.3 6.4 52 6.9 6.9 100
SYLVAN LAKE 8420 16.3 17.3 94 20.8 16.6 125
SYLVAN ROAD 7120 8.8 10.5 84 17.4 14.7 118
YOUNTS PEAK 8350 13.7 13.6 101 15.0 12.6 119
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Basin wide percent of average 97 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 4.0 152 6.6 6.0 110
BIG GOOSE 7990 5.9 7.0 84 8.8 6.3 140
BONE SPRINGS DIV 9350 12.6 12.0 105 13.9 10.8 129
BURGESS JUNCTION 7880 8.4 8.3 101 10.1 8.8 115
CLOUD PEAK RESERVOIR 9860 11.3 9.1 124 11.3 9.1 124
DOME LAKE 8880 7.8 8.9 88 11.1 9.6 116
GRAVE SPRINGS 8550 6.7 6.5 103 7.8 7.1 110
HANSEN SAWMILL 8360 4.9 4.7 104 7.1 5.8 122
MIDDLE POWDER 7760 7.4 8.2 90 6.5 9.0 72
POWDER RIVER PASS 9480 9.0 8.0 112 10.9 9.3 117
SUCKER CREEK 8880 9.7 8.3 117 11.5 9.8 117
TIE CREEK 6870 4.7 4.6 102 8.7 7.4 118
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Basin wide percent of average 105 115
BELLE FOURCHE
BLIND PARK 6890 5.5 6.2 89 7.9 8.6 92
COLE CANYON 5910 4.7 5.2 90 5.7 5.2 110
NORTH RAPID CREEK 6130 6.1 6.1 100 6.2 7.0 89
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Basin wide percent of average 93 95
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.6 19.8 104 22.6 19.1 118
DIVIDE PEAK 8880 19.2 14.4 133 19.4 15.5 125
ELK RIVER 8700 20.4 14.6 140 19.5 14.6 134
JOE WRIGHT 10120 18.4 15.9 116 21.6 18.4 117
NORTH FRENCH CREEK 10130 23.7 20.7 114 23.5 18.5 127
OLD BATTLE 10000 26.8 23.6 114 31.3 25.8 121
SAGE CREEK BASIN 7850 14.6 8.4 174 15.5 9.0 172
SOUTH BRUSH CREEK 8440 9.8 8.8 111 13.3 12.3 108
TOWER 10500 34.9 34.6 101 30.3 29.2 104
WEBBER SPRINGS 9250 20.8 19.0 109 24.3 20.3 120
WILLOW CREEK PASS 9540 12.5 8.7 144 12.8 9.5 135
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Basin wide percent of average 118 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.5 17.5 94 17.4 16.0 109
CASPER MTN. 7900 8.8 10.3 85 10.7 10.1 106
DEADMAN HILL 10220 13.4 12.0 112 13.9 12.0 116
DEER PARK 9700 11.0 13.9 79 15.5 16.5 94
LAPRELE CREEK 8375 -M 8.2 * -M 9.1 *
RENO HILL 8400 9.1 9.5 96 10.8 10.5 103
ROACH 9700 15.5 12.8 121 18.0 13.3 135
SAND LAKE 10050 21.4 22.8 94 21.4 17.7 121
SOUTH PASS 9040 10.2 13.0 78 13.1 13.9 94
WINDY PEAK 7900 6.1 5.4 113 7.7 7.8 99
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Basin wide percent of average 96 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.0 8.8 148 14.0 11.2 125
DIVIDE PEAK 8880 19.2 14.4 133 19.4 15.5 125
OLD BATTLE 10000 26.8 23.6 114 31.3 25.8 121
SANDSTONE RS 8150 14.3 11.3 127 17.8 14.3 124
WHISKEY PARK 8950 25.2 21.6 117 28.4 21.6 131
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Basin wide percent of average 124 125
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.3 11.0 94 10.4 10.3 101
BLIND BULL SUM 8650 19.3 21.0 92 14.8 17.5 85
EAST RIM DIVIDE 7930 7.0 10.0 70 9.2 9.3 99
ELKHART PARK G.S. 9400 9.1 10.1 90 9.8 10.0 98
GROS VENTRE SUMMIT 8750 10.8 10.6 102 12.0 9.8 122
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
KENDALL R.S. 7740 9.4 11.3 83 11.2 11.3 99
LOOMIS PARK 8240 12.6 13.1 96 14.4 13.5 107
NEW FORK LAKE 8340 7.8 8.8 89 7.9 8.9 89
SNIDER BASIN 8060 10.2 11.4 89 11.3 12.6 90
SPRING CREEK DIVIDE 9000 17.9 20.2 89 18.2 20.7 88
TRIPLE PEAK 8500 18.4 19.1 96 21.6 18.7 116
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Basin wide percent of average 91 99
LOWER GREEN RIVER
HAMS FORK 7840 9.2 9.9 93 7.9 9.5 83
HEWINTA 9519 9.5 8.1 117 13.4 10.6 126
HICKERSON PARK 9145 5.5 5.3 104 7.8 5.7 137
HOLE-IN-ROCK 9150 4.7 5.1 92 7.9 5.3 149
INDIAN CREEK 9425 17.8 20.2 88 13.3 19.3 69
KELLEY R.S. 8180 -M 12.6 * -M 15.8 *
STEEL CREEK PARK 10200 10.9 11.3 96 14.6 11.7 125
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Basin wide percent of average 96 105
UPPER BEAR RIVER
BUG LAKE 7950 14.2 15.5 92 13.8 14.7 94
HAYDEN FORK 9212 14.3 11.7 122 18.5 15.6 119
KELLEY R.S. 8180 -M 12.6 * -M 15.8 *
LILY LAKE 9156 11.3 9.8 115 14.4 13.0 111
MONTE CRISTO 8960 22.4 22.1 101 21.5 19.2 112
SALT RIVER SUMMIT 7760 10.5 11.1 95 12.5 14.5 86
TRIAL LAKE 9992 16.0 18.6 86 19.2 18.5 104
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Basin wide percent of average 100 105
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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.