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: JANUARY 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 10.3 11.2 92 16.8 13.4 125
COTTONWOOD CREEK 7670 11.6 12.7 91 14.4 17.1 84
GRAND TARGHEE 9260 28.3 -M * 21.1 -M *
GRANITE CREEK 6770 9.0 10.7 84 14.7 12.4 119
GRASSY LAKE 7265 17.2 20.1 86 25.3 22.6 112
GROS VENTRE SUMMIT 8750 8.0 8.7 92 9.4 7.9 119
GUNSIGHT PASS 9820 5.2 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 18.1 20.2 90 23.7 22.5 105
PHILLIPS BENCH 8200 16.2 16.5 98 19.9 17.6 113
SALT RIVER SUMMIT 7760 5.8 7.9 73 8.0 11.5 70
SNAKE RIVER STATION 6920 9.0 10.9 83 17.0 14.1 121
SPRING CREEK DIVIDE 9000 11.5 15.7 73 12.3 16.7 74
THUMB DIVIDE 7980 8.7 10.3 84 12.2 11.6 105
TOGWOTEE PASS 9580 16.5 15.1 109 18.3 15.3 120
TWO OCEAN PLATEAU 9240 22.1 17.1 129 19.3 16.8 115
WILLOW CREEK 8380 15.6 18.2 86 21.2 19.8 107
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Basin wide percent of average 92 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.2 14.8 103 14.5 12.6 115
BLACK BEAR 8170 26.5 23.1 115 26.8 23.3 115
CANYON 7870 9.9 8.0 124 13.0 9.8 133
FISHER CREEK 9100 25.6 21.5 119 -M 22.2 *
MADISON PLATEAU 7750 16.4 14.7 112 19.9 15.7 127
NORTHEAST ENTRANCE 7350 4.5 6.9 65 8.7 8.1 107
PARKER PEAK 9400 15.3 13.5 113 13.5 10.1 134
SYLVAN LAKE 8420 12.5 13.6 92 17.0 13.4 127
THUMB DIVIDE 7980 8.7 10.3 84 12.2 11.6 105
TWO OCEAN PLATEAU 9240 22.1 17.1 129 19.3 16.8 115
WHISKEY CREEK 6800 10.3 9.9 104 15.6 12.5 125
WHITE MILL 8700 15.9 14.6 109 -M 16.4 *
WOLVERINE 7650 5.1 7.7 66 8.1 8.4 96
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Basin wide percent of average 107 118
WIND RIVER
BURROUGHS CREEK 8750 9.7 9.2 105 12.4 10.3 120
COLD SPRINGS 9630 3.1 5.6 55 6.1 6.7 91
DEER PARK 9700 8.4 10.9 77 11.9 13.3 89
HOBBS PARK 10100 6.8 9.2 74 7.8 7.6 103
LITTLE WARM 9370 5.6 7.1 79 8.3 8.4 99
SOUTH PASS 9040 7.1 10.3 69 10.1 11.1 91
ST. LAWRENCE ALT 8620 3.0 4.5 67 4.9 5.3 92
TOGWOTEE PASS 9580 16.5 15.1 109 18.3 15.3 120
TOWNSEND CREEK 8700 3.9 5.2 75 7.2 6.8 106
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Basin wide percent of average 83 103
BIGHORN BASIN
BALD MTN. 9380 9.8 12.3 80 9.9 10.8 92
BEAR TRAP MEADOW 8200 5.1 3.2 159 6.1 5.1 120
BLACKWATER 9780 14.3 14.9 96 13.6 13.0 105
BONE SPRINGS DIV 9350 9.3 9.8 95 11.7 8.8 133
EVENING STAR 9200 16.8 17.9 94 19.5 16.1 121
GRAVE SPRINGS 8550 4.9 5.3 92 5.9 6.0 98
KIRWIN 9550 7.6 7.2 106 8.9 7.1 125
MARQUETTE 8760 2.0 5.6 36 5.8 5.9 98
MIDDLE POWDER 7760 5.7 6.7 85 5.7 7.8 73
OWL CREEK 8975 3.2 3.2 100 4.9 3.4 144
POWDER RIVER PASS 9480 7.1 6.6 108 8.9 7.5 119
SHELL CREEK 9580 9.9 9.1 109 10.1 8.4 120
SYLVAN LAKE 8420 12.5 13.6 92 17.0 13.4 127
SYLVAN ROAD 7120 6.3 8.0 79 14.4 12.3 117
TIMBER CREEK 7950 1.7 3.4 50 5.7 4.2 136
YOUNTS PEAK 8350 10.0 10.7 93 11.6 10.4 112
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Basin wide percent of average 92 114
SHOSHONE RIVER
BLACKWATER 9780 14.3 14.9 96 13.6 13.0 105
EVENING STAR 9200 16.8 17.9 94 19.5 16.1 121
KIRWIN 9550 7.6 7.2 106 8.9 7.1 125
MARQUETTE 8760 2.0 5.6 36 5.8 5.9 98
SYLVAN LAKE 8420 12.5 13.6 92 17.0 13.4 127
SYLVAN ROAD 7120 6.3 8.0 79 14.4 12.3 117
YOUNTS PEAK 8350 10.0 10.7 93 11.6 10.4 112
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Basin wide percent of average 89 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.1 3.2 159 6.1 5.1 120
BIG GOOSE 7990 4.7 5.5 85 7.6 5.0 152
BONE SPRINGS DIV 9350 9.3 9.8 95 11.7 8.8 133
BURGESS JUNCTION 7880 6.6 6.8 97 8.4 7.3 115
CLOUD PEAK RESERVOIR 9860 8.3 7.3 114 9.0 7.6 118
DOME LAKE 8880 5.9 7.4 80 9.4 8.1 116
GRAVE SPRINGS 8550 4.9 5.3 92 5.9 6.0 98
HANSEN SAWMILL 8360 3.7 3.9 95 5.8 4.9 118
MIDDLE POWDER 7760 5.7 6.7 85 5.7 7.8 73
POWDER RIVER PASS 9480 7.1 6.6 108 8.9 7.5 119
SUCKER CREEK 8880 7.5 6.6 114 8.9 8.1 110
TIE CREEK 6870 3.3 3.7 89 7.7 6.2 124
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Basin wide percent of average 99 115
BELLE FOURCHE
BLIND PARK 6890 3.5 4.8 73 5.7 7.3 78
COLE CANYON 5910 2.7 4.1 66 4.2 4.4 95
NORTH RAPID CREEK 6130 -M 4.4 * 4.2 5.9 71
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Basin wide percent of average 70 80
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.0 14.1 92 15.7 15.0 105
DIVIDE PEAK 8880 13.8 11.8 117 14.1 12.5 113
ELK RIVER 8700 12.3 10.5 117 13.8 11.5 120
JOE WRIGHT 10120 13.0 12.4 105 15.6 14.8 105
NORTH FRENCH CREEK 10130 18.5 16.7 111 18.8 14.9 126
OLD BATTLE 10000 17.9 18.0 99 21.8 20.3 107
SAGE CREEK BASIN 7850 9.9 6.8 146 11.2 7.3 153
SOUTH BRUSH CREEK 8440 7.7 6.6 117 11.1 9.8 113
TOWER 10500 22.0 26.7 82 22.7 22.9 99
WEBBER SPRINGS 9250 13.6 14.4 94 16.6 16.5 101
WILLOW CREEK PASS 9540 9.1 6.8 134 9.8 7.6 129
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Basin wide percent of average 104 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 11.6 13.8 84 12.6 13.0 97
CASPER MTN. 7900 6.0 8.3 72 8.4 8.3 101
DEADMAN HILL 10220 9.6 9.6 100 9.9 9.7 102
DEER PARK 9700 8.4 10.9 77 11.9 13.3 89
LAPRELE CREEK 8375 -M 6.6 * -M 7.5 *
RENO HILL 8400 6.5 7.8 83 8.3 8.7 95
ROACH 9700 11.4 9.7 118 13.6 10.6 128
SAND LAKE 10050 15.7 18.2 86 16.0 14.6 110
SOUTH PASS 9040 7.1 10.3 69 10.1 11.1 91
WINDY PEAK 7900 3.9 4.1 95 5.7 6.5 88
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Basin wide percent of average 87 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.1 6.6 138 10.9 9.0 121
DIVIDE PEAK 8880 13.8 11.8 117 14.1 12.5 113
OLD BATTLE 10000 17.9 18.0 99 21.8 20.3 107
SANDSTONE RS 8150 9.7 8.2 118 13.0 11.4 114
WHISKEY PARK 8950 16.4 15.9 103 20.4 17.6 116
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Basin wide percent of average 111 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.3 8.6 85 7.9 8.2 96
BLIND BULL SUM 8650 12.9 16.7 77 10.9 14.0 78
EAST RIM DIVIDE 7930 3.8 7.6 50 6.4 7.4 86
ELKHART PARK G.S. 9400 5.9 7.9 75 7.0 8.2 85
GROS VENTRE SUMMIT 8750 8.0 8.7 92 9.4 7.9 119
GUNSIGHT PASS 9820 5.2 -M * 9.1 -M *
KENDALL R.S. 7740 5.6 8.8 64 7.6 8.8 86
LOOMIS PARK 8240 8.2 10.1 81 9.8 10.7 92
NEW FORK LAKE 8340 4.7 6.9 68 5.5 7.3 75
SNIDER BASIN 8060 5.6 8.8 64 7.1 10.1 70
SPRING CREEK DIVIDE 9000 11.5 15.7 73 12.3 16.7 74
TRIPLE PEAK 8500 11.8 15.0 79 14.9 14.6 102
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Basin wide percent of average 74 87
LOWER GREEN RIVER
HAMS FORK 7840 5.1 7.4 69 5.5 7.6 72
HEWINTA 9519 5.2 5.7 91 10.1 8.5 119
HICKERSON PARK 9145 3.1 3.9 79 5.7 4.8 119
HOLE-IN-ROCK 9150 2.5 3.6 69 5.9 4.4 134
INDIAN CREEK 9425 11.2 15.9 70 10.8 15.3 71
KELLEY R.S. 8180 7.0 9.5 74 9.5 12.7 75
STEEL CREEK PARK 10200 7.4 8.4 88 11.2 9.2 122
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Basin wide percent of average 76 94
UPPER BEAR RIVER
BUG LAKE 7950 8.1 11.5 70 9.1 11.7 78
HAYDEN FORK 9212 9.2 8.6 107 12.6 12.4 102
KELLEY R.S. 8180 7.0 9.5 74 9.5 12.7 75
LILY LAKE 9156 6.9 7.2 96 10.4 10.5 99
MONTE CRISTO 8960 14.2 15.6 91 14.8 15.2 97
SALT RIVER SUMMIT 7760 5.8 7.9 73 8.0 11.5 70
TRIAL LAKE 9992 -M 13.8 * -M 14.3 *
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Basin wide percent of average 85 87
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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.