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 THURSDAY: FEBRUARY 21 , 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 15.1 96 21.2 17.4 122
COTTONWOOD CREEK 7670 18.6 16.9 110 20.3 21.6 94
GRAND TARGHEE 9260 37.6 -M * 25.7 -M *
GRANITE CREEK 6770 13.8 15.0 92 19.2 16.3 118
GRASSY LAKE 7265 24.7 27.5 90 32.5 29.2 111
GROS VENTRE SUMMIT 8750 10.9 10.8 101 12.0 10.0 120
GUNSIGHT PASS 9820 10.2 -M * 11.8 -M *
LEWIS LAKE DIVIDE 7850 25.1 27.7 91 29.7 29.4 101
PHILLIPS BENCH 8200 24.2 22.3 109 27.4 23.0 119
SALT RIVER SUMMIT 7760 10.7 11.4 94 12.6 14.8 85
SNAKE RIVER STATION 6920 13.4 15.4 87 21.7 18.3 119
SPRING CREEK DIVIDE 9000 18.0 20.7 87 18.4 21.2 87
THUMB DIVIDE 7980 13.0 14.2 92 15.7 14.9 105
TOGWOTEE PASS 9580 21.5 19.6 110 23.6 19.4 122
TWO OCEAN PLATEAU 9240 28.4 22.0 129 23.3 21.8 107
WILLOW CREEK 8380 24.0 23.8 101 29.6 25.3 117
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Basin wide percent of average 99 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.7 18.9 110 19.5 16.1 121
BLACK BEAR 8170 37.1 31.0 120 33.5 31.0 108
CANYON 7870 13.8 10.8 128 17.2 12.3 140
FISHER CREEK 9100 34.5 28.0 123 31.5 28.7 110
MADISON PLATEAU 7750 24.0 19.6 122 26.6 20.6 129
NORTHEAST ENTRANCE 7350 7.3 9.2 79 10.9 10.2 107
PARKER PEAK 9400 20.3 17.2 118 19.0 12.9 147
SYLVAN LAKE 8420 16.3 17.9 91 20.9 17.0 123
THUMB DIVIDE 7980 13.0 14.2 92 15.7 14.9 105
TWO OCEAN PLATEAU 9240 28.4 22.0 129 23.3 21.8 107
WHISKEY CREEK 6800 15.1 13.6 111 21.2 16.2 131
WHITE MILL 8700 22.0 19.2 115 22.6 21.3 106
WOLVERINE 7650 8.4 10.2 82 10.9 10.6 103
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Basin wide percent of average 113 117
WIND RIVER
BURROUGHS CREEK 8750 12.8 12.0 107 15.6 12.9 121
COLD SPRINGS 9630 5.4 6.9 78 8.3 8.0 104
DEER PARK 9700 11.1 13.9 80 15.5 16.9 92
HOBBS PARK 10100 10.0 11.3 88 10.8 9.3 116
LITTLE WARM 9370 7.8 9.0 87 11.1 10.3 108
SOUTH PASS 9040 10.2 13.4 76 13.0 14.2 92
ST. LAWRENCE ALT 8620 5.0 5.6 89 6.6 6.6 100
TOGWOTEE PASS 9580 21.5 19.6 110 23.6 19.4 122
TOWNSEND CREEK 8700 6.1 6.6 92 9.1 8.4 108
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Basin wide percent of average 91 107
BIGHORN BASIN
BALD MTN. 9380 12.7 15.2 84 12.3 13.4 92
BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111
BLACKWATER 9780 19.7 19.3 102 18.5 16.3 113
BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 11.0 128
EVENING STAR 9200 23.7 23.6 100 26.2 20.5 128
GRAVE SPRINGS 8550 6.8 6.7 101 7.8 7.2 108
KIRWIN 9550 9.9 8.7 114 11.9 8.7 137
MARQUETTE 8760 3.2 6.6 48 7.2 7.1 101
MIDDLE POWDER 7760 7.4 8.4 88 7.0 9.1 77
OWL CREEK 8975 4.1 3.9 105 5.4 4.2 129
POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.5 117
SHELL CREEK 9580 12.4 11.2 111 12.1 10.4 116
SYLVAN LAKE 8420 16.3 17.9 91 20.9 17.0 123
SYLVAN ROAD 7120 8.8 10.7 82 17.4 15.0 116
TIMBER CREEK 7950 2.6 4.0 65 6.6 5.1 129
YOUNTS PEAK 8350 13.8 14.0 99 15.1 12.9 117
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Basin wide percent of average 97 116
SHOSHONE RIVER
BLACKWATER 9780 19.7 19.3 102 18.5 16.3 113
EVENING STAR 9200 23.7 23.6 100 26.2 20.5 128
KIRWIN 9550 9.9 8.7 114 11.9 8.7 137
MARQUETTE 8760 3.2 6.6 48 7.2 7.1 101
SYLVAN LAKE 8420 16.3 17.9 91 20.9 17.0 123
SYLVAN ROAD 7120 8.8 10.7 82 17.4 15.0 116
YOUNTS PEAK 8350 13.8 14.0 99 15.1 12.9 117
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Basin wide percent of average 95 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111
BIG GOOSE 7990 6.1 7.1 86 9.0 6.4 141
BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 11.0 128
BURGESS JUNCTION 7880 8.6 8.5 101 10.2 9.0 113
CLOUD PEAK RESERVOIR 9860 11.6 9.4 123 11.7 9.3 126
DOME LAKE 8880 8.0 9.1 88 11.3 9.7 116
GRAVE SPRINGS 8550 6.8 6.7 101 7.8 7.2 108
HANSEN SAWMILL 8360 4.9 4.9 100 7.2 5.9 122
MIDDLE POWDER 7760 7.4 8.4 88 7.0 9.1 77
POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.5 117
SUCKER CREEK 8880 10.0 8.5 118 11.9 9.9 120
TIE CREEK 6870 4.8 4.6 104 8.8 7.5 117
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Basin wide percent of average 105 116
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 6.4 6.3 102 6.6 7.1 93
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Basin wide percent of average 94 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.6 20.4 101 22.9 19.5 117
DIVIDE PEAK 8880 19.3 14.7 131 19.5 15.9 123
ELK RIVER 8700 20.4 15.0 136 19.8 15.0 132
JOE WRIGHT 10120 18.6 16.2 115 21.9 18.8 116
NORTH FRENCH CREEK 10130 23.8 21.2 112 23.7 18.9 125
OLD BATTLE 10000 26.9 24.3 111 31.8 26.4 120
SAGE CREEK BASIN 7850 14.7 8.5 173 15.5 9.2 168
SOUTH BRUSH CREEK 8440 9.9 9.1 109 13.5 12.6 107
TOWER 10500 35.2 35.3 100 30.3 29.9 101
WEBBER SPRINGS 9250 20.9 19.6 107 24.4 20.7 118
WILLOW CREEK PASS 9540 12.5 9.0 139 12.9 9.7 133
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Basin wide percent of average 115 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.7 17.8 94 17.5 16.4 107
CASPER MTN. 7900 9.0 10.6 85 10.8 10.3 105
DEADMAN HILL 10220 13.5 12.2 111 13.9 12.3 113
DEER PARK 9700 11.1 13.9 80 15.5 16.9 92
LAPRELE CREEK 8375 -M 8.3 * -M 9.3 *
RENO HILL 8400 9.2 9.7 95 11.0 10.7 103
ROACH 9700 15.6 13.1 119 18.2 13.7 133
SAND LAKE 10050 21.6 23.3 93 21.7 18.1 120
SOUTH PASS 9040 10.2 13.4 76 13.0 14.2 92
WINDY PEAK 7900 6.2 5.6 111 7.8 7.9 99
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Basin wide percent of average 95 107
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.3 9.0 148 14.1 11.5 123
DIVIDE PEAK 8880 19.3 14.7 131 19.5 15.9 123
OLD BATTLE 10000 26.9 24.3 111 31.8 26.4 120
SANDSTONE RS 8150 14.3 11.6 123 17.8 14.6 122
WHISKEY PARK 8950 25.3 22.1 114 28.8 22.1 130
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Basin wide percent of average 121 124
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.5 11.3 93 10.6 10.6 100
BLIND BULL SUM 8650 19.5 21.5 91 14.9 17.9 83
EAST RIM DIVIDE 7930 7.1 10.3 69 9.2 9.5 97
ELKHART PARK G.S. 9400 9.1 10.4 87 10.0 10.3 97
GROS VENTRE SUMMIT 8750 10.9 10.8 101 12.0 10.0 120
GUNSIGHT PASS 9820 10.2 -M * 11.8 -M *
KENDALL R.S. 7740 9.5 11.5 83 11.3 11.6 97
LOOMIS PARK 8240 12.7 13.4 95 14.5 13.9 104
NEW FORK LAKE 8340 7.8 9.0 87 8.1 9.1 89
SNIDER BASIN 8060 10.2 11.6 88 11.4 12.9 88
SPRING CREEK DIVIDE 9000 18.0 20.7 87 18.4 21.2 87
TRIPLE PEAK 8500 18.5 19.5 95 21.6 19.2 113
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Basin wide percent of average 89 97
LOWER GREEN RIVER
HAMS FORK 7840 9.3 10.1 92 8.0 9.8 82
HEWINTA 9519 9.8 8.3 118 13.5 10.8 125
HICKERSON PARK 9145 5.6 5.4 104 7.8 5.9 132
HOLE-IN-ROCK 9150 4.7 5.2 90 7.9 5.4 146
INDIAN CREEK 9425 18.1 20.7 87 13.6 19.7 69
KELLEY R.S. 8180 11.3 12.9 88 13.8 16.2 85
STEEL CREEK PARK 10200 11.2 11.6 97 14.7 12.0 122
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Basin wide percent of average 94 99
UPPER BEAR RIVER
BUG LAKE 7950 14.2 15.9 89 13.8 15.1 91
HAYDEN FORK 9212 14.6 12.1 121 18.6 15.9 117
KELLEY R.S. 8180 11.3 12.9 88 13.8 16.2 85
LILY LAKE 9156 11.5 10.0 115 14.5 13.3 109
MONTE CRISTO 8960 22.3 22.7 98 21.6 19.7 110
SALT RIVER SUMMIT 7760 10.7 11.4 94 12.6 14.8 85
TRIAL LAKE 9992 16.2 19.1 85 19.3 19.0 102
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Basin wide percent of average 97 100
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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.