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 SUNDAY: FEBRUARY 17 , 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 14.6 99 21.1 16.9 125
COTTONWOOD CREEK 7670 18.4 16.3 113 20.2 21.0 96
GRAND TARGHEE 9260 37.7 -M * 25.7 -M *
GRANITE CREEK 6770 13.7 14.5 94 19.1 15.8 121
GRASSY LAKE 7265 24.7 26.7 93 32.2 28.3 114
GROS VENTRE SUMMIT 8750 10.8 10.5 103 11.9 9.7 123
GUNSIGHT PASS 9820 10.3 -M * 11.7 -M *
LEWIS LAKE DIVIDE 7850 25.0 26.8 93 29.9 28.4 105
PHILLIPS BENCH 8200 24.1 21.5 112 27.3 22.3 122
SALT RIVER SUMMIT 7760 10.5 11.0 95 12.6 14.3 88
SNAKE RIVER STATION 6920 13.4 14.9 90 21.5 17.8 121
SPRING CREEK DIVIDE 9000 17.9 20.0 89 18.2 20.6 88
THUMB DIVIDE 7980 13.0 13.7 95 15.6 14.5 108
TOGWOTEE PASS 9580 21.5 19.1 113 23.4 18.9 124
TWO OCEAN PLATEAU 9240 28.4 21.4 133 22.9 21.1 109
WILLOW CREEK 8380 24.0 23.1 104 29.3 24.6 119
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Basin wide percent of average 102 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.6 18.4 112 19.1 15.7 122
BLACK BEAR 8170 37.0 29.7 125 33.5 29.9 112
CANYON 7870 13.8 10.3 134 17.0 12.0 142
FISHER CREEK 9100 34.5 27.0 128 -M 27.8 *
MADISON PLATEAU 7750 23.9 18.9 126 26.4 20.0 132
NORTHEAST ENTRANCE 7350 7.4 8.9 83 10.9 9.9 110
PARKER PEAK 9400 20.1 16.6 121 -M 12.5 *
SYLVAN LAKE 8420 16.3 17.2 95 20.7 16.5 125
THUMB DIVIDE 7980 13.0 13.7 95 15.6 14.5 108
TWO OCEAN PLATEAU 9240 28.4 21.4 133 22.9 21.1 109
WHISKEY CREEK 6800 15.2 13.0 117 21.1 15.7 134
WHITE MILL 8700 21.9 18.5 118 -M 20.7 *
WOLVERINE 7650 8.4 9.8 86 10.7 10.3 104
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Basin wide percent of average 117 120
WIND RIVER
BURROUGHS CREEK 8750 12.8 11.4 112 15.6 12.6 124
COLD SPRINGS 9630 5.3 6.5 82 8.3 7.8 106
DEER PARK 9700 10.8 13.8 78 15.3 16.4 93
HOBBS PARK 10100 9.8 10.9 90 10.6 9.1 116
LITTLE WARM 9370 7.7 8.6 90 11.0 10.1 109
SOUTH PASS 9040 10.0 12.8 78 12.8 13.8 93
ST. LAWRENCE ALT 8620 4.8 5.3 91 6.4 6.4 100
TOGWOTEE PASS 9580 21.5 19.1 113 23.4 18.9 124
TOWNSEND CREEK 8700 5.7 6.4 89 8.8 8.1 109
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Basin wide percent of average 93 109
BIGHORN BASIN
BALD MTN. 9380 12.3 14.8 83 11.9 13.0 92
BEAR TRAP MEADOW 8200 6.1 3.9 156 6.6 6.0 110
BLACKWATER 9780 19.6 18.6 105 18.3 15.8 116
BONE SPRINGS DIV 9350 12.4 11.9 104 13.8 10.7 129
EVENING STAR 9200 23.5 22.8 103 -M 19.9 *
GRAVE SPRINGS 8550 6.6 6.5 102 7.7 7.0 110
KIRWIN 9550 9.7 8.4 115 11.8 8.4 140
MARQUETTE 8760 3.0 6.4 47 6.7 6.9 97
MIDDLE POWDER 7760 7.2 8.1 89 6.4 8.9 72
OWL CREEK 8975 4.0 3.7 108 5.4 4.1 132
POWDER RIVER PASS 9480 9.0 7.9 114 11.0 9.2 120
SHELL CREEK 9580 12.2 10.9 112 12.0 10.2 118
SYLVAN LAKE 8420 16.3 17.2 95 20.7 16.5 125
SYLVAN ROAD 7120 8.8 10.4 85 17.4 14.6 119
TIMBER CREEK 7950 2.5 3.9 64 6.0 5.0 120
YOUNTS PEAK 8350 13.8 13.4 103 14.9 12.6 118
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Basin wide percent of average 99 115
SHOSHONE RIVER
BLACKWATER 9780 19.6 18.6 105 18.3 15.8 116
EVENING STAR 9200 23.5 22.8 103 -M 19.9 *
KIRWIN 9550 9.7 8.4 115 11.8 8.4 140
MARQUETTE 8760 3.0 6.4 47 6.7 6.9 97
SYLVAN LAKE 8420 16.3 17.2 95 20.7 16.5 125
SYLVAN ROAD 7120 8.8 10.4 85 17.4 14.6 119
YOUNTS PEAK 8350 13.8 13.4 103 14.9 12.6 118
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Basin wide percent of average 97 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 3.9 156 6.6 6.0 110
BIG GOOSE 7990 6.0 6.9 87 8.8 6.3 140
BONE SPRINGS DIV 9350 12.4 11.9 104 13.8 10.7 129
BURGESS JUNCTION 7880 8.3 8.2 101 10.0 8.7 115
CLOUD PEAK RESERVOIR 9860 11.1 9.0 123 11.4 9.1 125
DOME LAKE 8880 7.8 8.9 88 11.2 9.5 118
GRAVE SPRINGS 8550 6.6 6.5 102 7.7 7.0 110
HANSEN SAWMILL 8360 4.9 4.7 104 7.1 5.8 122
MIDDLE POWDER 7760 7.2 8.1 89 6.4 8.9 72
POWDER RIVER PASS 9480 9.0 7.9 114 11.0 9.2 120
SUCKER CREEK 8880 9.6 8.2 117 11.5 9.7 119
TIE CREEK 6870 4.7 4.6 102 8.6 7.3 118
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Basin wide percent of average 106 116
BELLE FOURCHE
BLIND PARK 6890 5.3 6.1 87 7.7 8.6 90
COLE CANYON 5910 4.8 5.2 92 5.8 5.1 114
NORTH RAPID CREEK 6130 6.0 6.0 100 6.3 6.9 91
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Basin wide percent of average 93 96
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.2 19.6 103 22.2 18.9 117
DIVIDE PEAK 8880 19.1 14.3 134 19.2 15.4 125
ELK RIVER 8700 20.2 14.5 139 19.4 14.5 134
JOE WRIGHT 10120 18.2 15.8 115 21.2 18.3 116
NORTH FRENCH CREEK 10130 23.4 20.6 114 22.7 18.4 123
OLD BATTLE 10000 26.5 23.4 113 31.0 25.5 122
SAGE CREEK BASIN 7850 14.5 8.3 175 15.3 8.9 172
SOUTH BRUSH CREEK 8440 9.6 8.7 110 13.0 12.2 107
TOWER 10500 34.5 34.3 101 30.3 28.9 105
WEBBER SPRINGS 9250 20.6 18.8 110 24.1 20.1 120
WILLOW CREEK PASS 9540 12.3 8.7 141 12.7 9.4 135
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Basin wide percent of average 117 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.5 17.3 95 17.2 15.9 108
CASPER MTN. 7900 8.6 10.3 83 10.6 10.0 106
DEADMAN HILL 10220 13.1 11.9 110 13.5 11.9 113
DEER PARK 9700 10.8 13.8 78 15.3 16.4 93
LAPRELE CREEK 8375 -M 8.1 * -M 9.1 *
RENO HILL 8400 8.6 9.4 91 10.4 10.4 100
ROACH 9700 15.3 12.7 120 17.9 13.2 136
SAND LAKE 10050 21.0 22.6 93 21.1 17.6 120
SOUTH PASS 9040 10.0 12.8 78 12.8 13.8 93
WINDY PEAK 7900 6.1 5.4 113 7.6 7.7 99
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Basin wide percent of average 95 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.0 8.8 148 13.9 11.2 124
DIVIDE PEAK 8880 19.1 14.3 134 19.2 15.4 125
OLD BATTLE 10000 26.5 23.4 113 31.0 25.5 122
SANDSTONE RS 8150 14.2 11.2 127 17.7 14.2 125
WHISKEY PARK 8950 25.0 21.4 117 28.3 21.5 132
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Basin wide percent of average 124 125
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.4 11.0 95 10.5 10.3 102
BLIND BULL SUM 8650 19.3 20.9 92 14.9 17.4 86
EAST RIM DIVIDE 7930 7.0 9.9 71 9.2 9.2 100
ELKHART PARK G.S. 9400 9.1 10.1 90 10.0 9.9 101
GROS VENTRE SUMMIT 8750 10.8 10.5 103 11.9 9.7 123
GUNSIGHT PASS 9820 10.3 -M * 11.7 -M *
KENDALL R.S. 7740 9.4 11.2 84 11.2 11.2 100
LOOMIS PARK 8240 12.7 13.0 98 14.3 13.4 107
NEW FORK LAKE 8340 7.8 8.8 89 8.0 8.8 91
SNIDER BASIN 8060 10.2 11.3 90 11.2 12.5 90
SPRING CREEK DIVIDE 9000 17.9 20.0 89 18.2 20.6 88
TRIPLE PEAK 8500 18.4 18.9 97 21.6 18.6 116
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Basin wide percent of average 91 100
LOWER GREEN RIVER
HAMS FORK 7840 9.3 9.8 95 7.9 9.5 83
HEWINTA 9519 9.5 8.0 119 13.3 10.5 127
HICKERSON PARK 9145 5.5 5.2 106 7.8 5.7 137
HOLE-IN-ROCK 9150 4.6 5.0 92 7.9 5.3 149
INDIAN CREEK 9425 17.8 20.1 89 13.4 19.1 70
KELLEY R.S. 8180 -M 12.5 * -M 15.7 *
STEEL CREEK PARK 10200 10.9 11.2 97 14.5 11.6 125
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Basin wide percent of average 97 105
UPPER BEAR RIVER
BUG LAKE 7950 14.1 15.4 92 13.8 14.6 95
HAYDEN FORK 9212 14.3 11.6 123 18.4 15.4 119
KELLEY R.S. 8180 -M 12.5 * -M 15.7 *
LILY LAKE 9156 11.2 9.7 115 14.4 12.9 112
MONTE CRISTO 8960 22.4 21.8 103 21.5 19.1 113
SALT RIVER SUMMIT 7760 10.5 11.0 95 12.6 14.3 88
TRIAL LAKE 9992 16.0 18.4 87 19.1 18.3 104
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Basin wide percent of average 101 105
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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.