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 15 , 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 14.4 14.4 100 21.1 16.6 127
COTTONWOOD CREEK 7670 18.1 16.0 113 20.1 20.7 97
GRAND TARGHEE 9260 37.2 -M * 25.4 -M *
GRANITE CREEK 6770 13.6 14.2 96 19.1 15.5 123
GRASSY LAKE 7265 24.3 26.2 93 32.1 27.9 115
GROS VENTRE SUMMIT 8750 10.8 10.4 104 11.9 9.6 124
GUNSIGHT PASS 9820 10.2 -M * 11.6 -M *
LEWIS LAKE DIVIDE 7850 24.7 26.4 94 29.7 28.0 106
PHILLIPS BENCH 8200 23.9 21.1 113 27.1 21.9 124
SALT RIVER SUMMIT 7760 10.4 10.8 96 12.5 14.1 89
SNAKE RIVER STATION 6920 13.2 14.6 90 21.5 17.5 123
SPRING CREEK DIVIDE 9000 17.8 19.7 90 18.1 20.3 89
THUMB DIVIDE 7980 12.9 13.5 96 15.6 14.2 110
TOGWOTEE PASS 9580 21.3 18.8 113 23.2 18.6 125
TWO OCEAN PLATEAU 9240 28.0 21.1 133 22.4 20.8 108
WILLOW CREEK 8380 23.6 22.7 104 29.1 24.2 120
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Basin wide percent of average 103 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.2 18.2 111 19.0 15.5 123
BLACK BEAR 8170 36.8 29.1 126 33.5 29.4 114
CANYON 7870 13.7 10.1 136 17.0 11.8 144
FISHER CREEK 9100 34.1 26.6 128 31.1 27.4 114
MADISON PLATEAU 7750 23.7 18.5 128 26.3 19.6 134
NORTHEAST ENTRANCE 7350 7.3 8.8 83 10.8 9.8 110
PARKER PEAK 9400 19.8 16.4 121 18.6 12.3 151
SYLVAN LAKE 8420 16.0 16.7 96 20.6 16.3 126
THUMB DIVIDE 7980 12.9 13.5 96 15.6 14.2 110
TWO OCEAN PLATEAU 9240 28.0 21.1 133 22.4 20.8 108
WHISKEY CREEK 6800 15.1 12.7 119 21.3 15.4 138
WHITE MILL 8700 21.6 18.1 119 22.3 20.4 109
WOLVERINE 7650 8.2 9.7 85 10.9 10.1 108
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Basin wide percent of average 117 121
WIND RIVER
BURROUGHS CREEK 8750 12.8 11.3 113 15.6 12.4 126
COLD SPRINGS 9630 5.3 6.4 83 8.3 7.7 108
DEER PARK 9700 10.8 13.7 79 15.3 16.2 94
HOBBS PARK 10100 9.8 10.7 92 10.5 9.0 117
LITTLE WARM 9370 7.7 8.5 91 11.0 9.9 111
SOUTH PASS 9040 10.0 12.5 80 12.9 13.6 95
ST. LAWRENCE ALT 8620 4.7 5.2 90 6.3 6.3 100
TOGWOTEE PASS 9580 21.3 18.8 113 23.2 18.6 125
TOWNSEND CREEK 8700 5.8 6.3 92 8.8 8.0 110
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Basin wide percent of average 94 110
BIGHORN BASIN
BALD MTN. 9380 12.0 14.5 83 12.0 12.9 93
BEAR TRAP MEADOW 8200 6.0 3.9 154 6.6 5.9 112
BLACKWATER 9780 19.5 18.3 107 18.3 15.6 117
BONE SPRINGS DIV 9350 12.2 11.7 104 14.0 10.6 132
EVENING STAR 9200 23.5 22.3 105 26.1 19.6 133
GRAVE SPRINGS 8550 6.3 6.5 97 7.5 6.9 109
KIRWIN 9550 9.6 8.3 116 11.7 8.3 141
MARQUETTE 8760 3.0 6.3 48 6.9 6.8 101
MIDDLE POWDER 7760 6.9 8.1 85 6.6 8.9 74
OWL CREEK 8975 3.9 3.7 105 5.3 4.0 132
POWDER RIVER PASS 9480 8.9 7.9 113 10.9 9.1 120
SHELL CREEK 9580 12.1 10.7 113 11.9 10.1 118
SYLVAN LAKE 8420 16.0 16.7 96 20.6 16.3 126
SYLVAN ROAD 7120 8.7 10.2 85 17.3 14.5 119
TIMBER CREEK 7950 2.3 3.9 59 6.3 4.9 129
YOUNTS PEAK 8350 13.6 13.2 103 15.0 12.4 121
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Basin wide percent of average 99 118
SHOSHONE RIVER
BLACKWATER 9780 19.5 18.3 107 18.3 15.6 117
EVENING STAR 9200 23.5 22.3 105 26.1 19.6 133
KIRWIN 9550 9.6 8.3 116 11.7 8.3 141
MARQUETTE 8760 3.0 6.3 48 6.9 6.8 101
SYLVAN LAKE 8420 16.0 16.7 96 20.6 16.3 126
SYLVAN ROAD 7120 8.7 10.2 85 17.3 14.5 119
YOUNTS PEAK 8350 13.6 13.2 103 15.0 12.4 121
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Basin wide percent of average 99 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.0 3.9 154 6.6 5.9 112
BIG GOOSE 7990 5.8 6.8 85 8.6 6.2 139
BONE SPRINGS DIV 9350 12.2 11.7 104 14.0 10.6 132
BURGESS JUNCTION 7880 8.1 8.1 100 9.8 8.6 114
CLOUD PEAK RESERVOIR 9860 10.9 8.9 122 11.3 8.9 127
DOME LAKE 8880 7.7 8.7 89 10.9 9.4 116
GRAVE SPRINGS 8550 6.3 6.5 97 7.5 6.9 109
HANSEN SAWMILL 8360 4.8 4.6 104 7.1 5.7 125
MIDDLE POWDER 7760 6.9 8.1 85 6.6 8.9 74
POWDER RIVER PASS 9480 8.9 7.9 113 10.9 9.1 120
SUCKER CREEK 8880 9.3 8.1 115 11.1 9.6 116
TIE CREEK 6870 4.4 4.5 98 8.3 7.3 114
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Basin wide percent of average 104 116
BELLE FOURCHE
BLIND PARK 6890 5.1 5.9 86 8.0 8.5 94
COLE CANYON 5910 4.6 5.1 90 5.7 5.1 112
NORTH RAPID CREEK 6130 5.6 5.9 95 6.1 6.9 88
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Basin wide percent of average 91 97
UPPER N. PLATTE RIVER
COLUMBINE 9160 19.9 19.3 103 22.2 18.6 119
DIVIDE PEAK 8880 18.8 14.1 133 19.0 15.2 125
ELK RIVER 8700 19.9 14.2 140 19.3 14.3 135
JOE WRIGHT 10120 17.9 15.5 115 21.3 18.0 118
NORTH FRENCH CREEK 10130 22.8 20.3 112 22.5 18.1 124
OLD BATTLE 10000 26.2 23.0 114 30.9 25.1 123
SAGE CREEK BASIN 7850 14.3 8.2 174 15.2 8.8 173
SOUTH BRUSH CREEK 8440 9.1 8.6 106 12.7 12.1 105
TOWER 10500 33.9 33.8 100 30.3 28.5 106
WEBBER SPRINGS 9250 20.4 18.4 111 24.0 19.9 121
WILLOW CREEK PASS 9540 12.4 8.5 146 12.7 9.3 137
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Basin wide percent of average 117 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.4 17.1 96 17.1 15.7 109
CASPER MTN. 7900 8.4 10.1 83 10.3 9.9 104
DEADMAN HILL 10220 13.0 11.7 111 13.5 11.8 114
DEER PARK 9700 10.8 13.7 79 15.3 16.2 94
LAPRELE CREEK 8375 -M 8.0 * -M 9.0 *
RENO HILL 8400 8.4 9.3 90 10.2 10.3 99
ROACH 9700 15.2 12.5 122 17.8 13.0 137
SAND LAKE 10050 20.6 22.2 93 20.8 17.4 120
SOUTH PASS 9040 10.0 12.5 80 12.9 13.6 95
WINDY PEAK 7900 5.9 5.3 111 7.5 7.6 99
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Basin wide percent of average 95 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.6 8.7 145 13.8 11.0 125
DIVIDE PEAK 8880 18.8 14.1 133 19.0 15.2 125
OLD BATTLE 10000 26.2 23.0 114 30.9 25.1 123
SANDSTONE RS 8150 14.1 11.1 127 17.5 14.0 125
WHISKEY PARK 8950 24.7 21.1 117 27.9 21.3 131
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Basin wide percent of average 124 126
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.4 10.8 96 10.5 10.1 104
BLIND BULL SUM 8650 19.1 20.6 93 14.8 17.1 87
EAST RIM DIVIDE 7930 6.9 9.7 71 9.1 9.1 100
ELKHART PARK G.S. 9400 9.0 9.9 91 9.8 9.8 100
GROS VENTRE SUMMIT 8750 10.8 10.4 104 11.9 9.6 124
GUNSIGHT PASS 9820 10.2 -M * 11.6 -M *
KENDALL R.S. 7740 9.5 11.0 86 11.3 11.0 103
LOOMIS PARK 8240 12.5 12.7 98 14.3 13.2 108
NEW FORK LAKE 8340 7.8 8.6 91 7.9 8.7 91
SNIDER BASIN 8060 10.1 11.1 91 11.2 12.3 91
SPRING CREEK DIVIDE 9000 17.8 19.7 90 18.1 20.3 89
TRIPLE PEAK 8500 18.2 18.6 98 21.4 18.3 117
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Basin wide percent of average 92 101
LOWER GREEN RIVER
HAMS FORK 7840 9.1 9.6 95 7.9 9.3 85
HEWINTA 9519 9.3 7.8 119 13.2 10.3 128
HICKERSON PARK 9145 5.1 5.1 100 7.4 5.6 132
HOLE-IN-ROCK 9150 4.5 4.9 92 7.8 5.2 150
INDIAN CREEK 9425 17.7 19.7 90 13.3 18.8 71
KELLEY R.S. 8180 -M 12.2 * -M 15.4 *
STEEL CREEK PARK 10200 10.7 10.9 98 14.5 11.4 127
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Basin wide percent of average 97 106
UPPER BEAR RIVER
BUG LAKE 7950 14.0 15.1 93 13.6 14.4 94
HAYDEN FORK 9212 14.3 11.4 125 18.3 15.2 120
KELLEY R.S. 8180 -M 12.2 * -M 15.4 *
LILY LAKE 9156 11.2 9.5 118 14.3 12.8 112
MONTE CRISTO 8960 22.2 21.4 104 21.4 18.8 114
SALT RIVER SUMMIT 7760 10.4 10.8 96 12.5 14.1 89
TRIAL LAKE 9992 15.7 18.0 87 18.8 18.0 104
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Basin wide percent of average 102 106
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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.