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: JANUARY 16 , 2009
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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 9.9 10.4 95 12.6 12.7 99
COTTONWOOD CREEK 7670 15.5 12.0 129 19.0 16.3 117
GRAND TARGHEE 9260 22.3 -M * 20.1 -M *
GRANITE CREEK 6770 9.7 9.9 98 14.3 11.7 122
GRASSY LAKE 7265 17.9 18.7 96 21.2 21.4 99
GROS VENTRE SUMMIT 8750 8.4 8.3 101 9.4 7.5 125
GUNSIGHT PASS 9820 8.4 -M * 9.4 -M *
LEWIS LAKE DIVIDE 7850 15.8 18.8 84 20.1 21.3 94
PHILLIPS BENCH 8200 16.0 15.5 103 18.3 16.6 110
SALT RIVER SUMMIT 7760 7.2 7.2 100 8.9 10.9 82
SNAKE RIVER STATION 6920 9.6 10.1 95 13.7 13.3 103
SPRING CREEK DIVIDE 9000 15.7 14.9 105 16.5 15.9 104
THUMB DIVIDE 7980 10.3 9.6 107 12.1 11.0 110
TOGWOTEE PASS 9580 18.0 14.2 127 19.6 14.5 135
TWO OCEAN PLATEAU 9240 22.9 16.2 141 17.7 16.0 111
WILLOW CREEK 8380 18.7 17.2 109 23.0 18.8 122
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Basin wide percent of average 107 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.6 14.1 104 13.4 12.0 112
BLACK BEAR 8170 19.0 21.7 88 20.8 21.9 95
CANYON 7870 7.6 7.6 100 8.5 9.3 91
FISHER CREEK 9100 22.7 20.5 111 21.7 21.0 103
MADISON PLATEAU 7750 11.1 14.0 79 13.2 14.9 89
NORTHEAST ENTRANCE 7350 6.3 6.5 97 8.8 7.7 114
PARKER PEAK 9400 15.9 12.8 124 12.6 9.6 131
SYLVAN LAKE 8420 11.4 12.9 88 13.8 12.8 108
THUMB DIVIDE 7980 10.3 9.6 107 12.1 11.0 110
TWO OCEAN PLATEAU 9240 22.9 16.2 141 17.7 16.0 111
WHISKEY CREEK 6800 7.9 9.4 84 11.0 11.9 92
WHITE MILL 8700 14.8 13.9 106 14.9 15.5 96
WOLVERINE 7650 7.3 7.3 100 7.5 8.1 93
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Basin wide percent of average 103 103
WIND RIVER
BURROUGHS CREEK 8750 11.1 8.8 126 12.0 9.7 124
COLD SPRINGS 9630 4.6 5.4 85 6.3 6.4 98
DEER PARK 9700 5.9 9.2 64 9.6 12.7 76
HOBBS PARK 10100 6.8 8.9 76 7.1 7.3 97
LITTLE WARM 9370 6.6 6.7 99 8.6 8.0 108
SOUTH PASS 9040 6.5 9.8 66 8.8 10.6 83
ST. LAWRENCE ALT 8620 1.9 4.3 44 4.8 5.1 94
TOGWOTEE PASS 9580 18.0 14.2 127 19.6 14.5 135
TOWNSEND CREEK 8700 4.1 5.1 80 6.1 6.6 92
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Basin wide percent of average 90 102
BIGHORN BASIN
BALD MTN. 9380 13.3 11.8 113 11.1 10.2 109
BEAR TRAP MEADOW 8200 5.6 3.0 187 6.2 5.0 124
BLACKWATER 9780 15.5 14.3 108 14.1 12.5 113
BONE SPRINGS DIV 9350 13.2 9.4 140 10.4 8.4 124
EVENING STAR 9200 19.0 17.0 112 20.0 15.4 130
GRAVE SPRINGS 8550 4.6 4.9 94 5.8 5.8 100
KIRWIN 9550 8.4 7.0 120 9.5 6.8 140
MARQUETTE 8760 2.7 5.4 50 5.6 5.8 97
MIDDLE POWDER 7760 6.1 6.4 95 6.1 7.5 81
OWL CREEK 8975 3.6 3.1 116 3.6 3.3 109
POWDER RIVER PASS 9480 8.8 6.3 140 10.0 7.1 141
SHELL CREEK 9580 11.8 8.7 136 11.5 7.9 146
SYLVAN LAKE 8420 11.4 12.9 88 13.8 12.8 108
SYLVAN ROAD 7120 9.4 7.6 124 12.3 11.8 104
TIMBER CREEK 7950 2.8 3.3 85 5.8 4.1 141
YOUNTS PEAK 8350 12.8 10.0 128 11.6 9.9 117
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Basin wide percent of average 114 117
SHOSHONE RIVER
BLACKWATER 9780 15.5 14.3 108 14.1 12.5 113
EVENING STAR 9200 19.0 17.0 112 20.0 15.4 130
KIRWIN 9550 8.4 7.0 120 9.5 6.8 140
MARQUETTE 8760 2.7 5.4 50 5.6 5.8 97
SYLVAN LAKE 8420 11.4 12.9 88 13.8 12.8 108
SYLVAN ROAD 7120 9.4 7.6 124 12.3 11.8 104
YOUNTS PEAK 8350 12.8 10.0 128 11.6 9.9 117
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Basin wide percent of average 107 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 3.0 187 6.2 5.0 124
BIG GOOSE 7990 5.5 5.2 106 7.7 4.9 157
BONE SPRINGS DIV 9350 13.2 9.4 140 10.4 8.4 124
BURGESS JUNCTION 7880 8.2 6.5 126 8.9 7.0 127
CLOUD PEAK RESERVOIR 9860 11.4 7.0 163 11.1 7.3 152
DOME LAKE 8880 8.2 7.1 115 10.1 7.8 129
GRAVE SPRINGS 8550 4.6 4.9 94 5.8 5.8 100
HANSEN SAWMILL 8360 4.2 3.7 114 6.7 4.8 140
MIDDLE POWDER 7760 6.1 6.4 95 6.1 7.5 81
POWDER RIVER PASS 9480 8.8 6.3 140 10.0 7.1 141
SUCKER CREEK 8880 9.8 6.3 156 11.5 7.7 149
TIE CREEK 6870 3.3 3.6 92 9.5 5.9 161
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Basin wide percent of average 128 131
BELLE FOURCHE
BLIND PARK 6890 6.6 4.5 147 10.9 7.0 156
COLE CANYON 5910 4.3 3.9 110 8.4 4.3 195
NORTH RAPID CREEK 6130 6.7 4.1 163 9.6 5.8 166
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Basin wide percent of average 141 169
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.3 13.0 102 13.0 14.2 92
DIVIDE PEAK 8880 10.0 11.2 89 12.2 11.9 103
ELK RIVER 8700 12.2 9.7 126 12.3 10.8 114
JOE WRIGHT 10120 12.9 11.7 110 16.3 14.1 116
NORTH FRENCH CREEK 10130 16.0 15.9 101 15.6 14.2 110
OLD BATTLE 10000 15.6 17.1 91 19.6 19.3 102
SAGE CREEK BASIN 7850 5.0 6.5 77 6.8 6.9 99
SOUTH BRUSH CREEK 8440 7.2 6.2 116 8.9 9.3 96
TOWER 10500 21.0 25.1 84 22.6 21.7 104
WEBBER SPRINGS 9250 12.1 13.6 89 15.0 15.8 95
WILLOW CREEK PASS 9540 6.8 6.5 105 7.2 7.3 99
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Basin wide percent of average 97 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 11.2 13.1 85 10.8 12.3 88
CASPER MTN. 7900 4.9 7.9 62 7.4 8.0 92
DEADMAN HILL 10220 8.7 9.1 96 9.4 9.2 102
DEER PARK 9700 5.9 9.2 64 9.6 12.7 76
LAPRELE CREEK 8375 3.6 6.3 57 4.5 7.2 62
RENO HILL 8400 5.7 7.5 76 7.0 8.3 84
ROACH 9700 9.0 9.1 99 10.4 10.1 103
SAND LAKE 10050 14.1 17.4 81 12.9 13.9 93
SOUTH PASS 9040 6.5 9.8 66 8.8 10.6 83
WINDY PEAK 7900 3.3 3.9 85 3.9 6.3 62
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Basin wide percent of average 78 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.3 6.0 105 8.9 8.6 103
DIVIDE PEAK 8880 10.0 11.2 89 12.2 11.9 103
OLD BATTLE 10000 15.6 17.1 91 19.6 19.3 102
SANDSTONE RS 8150 7.5 7.4 101 10.0 10.8 93
WHISKEY PARK 8950 15.0 14.7 102 17.1 16.6 103
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Basin wide percent of average 96 101
UPPER GREEN RIVER
BIG SANDY OPENING 9080 6.9 8.2 84 7.1 7.8 91
BLIND BULL SUM 8650 15.3 15.8 97 12.8 13.3 96
EAST RIM DIVIDE 7930 5.3 7.1 75 8.2 7.0 117
ELKHART PARK G.S. 9400 8.1 7.5 108 9.4 7.8 121
GROS VENTRE SUMMIT 8750 8.4 8.3 101 9.4 7.5 125
GUNSIGHT PASS 9820 8.4 -M * 9.4 -M *
KENDALL R.S. 7740 6.9 8.3 83 9.2 8.4 110
LOOMIS PARK 8240 10.3 9.6 107 12.6 10.1 125
NEW FORK LAKE 8340 7.6 6.5 117 7.4 7.0 106
SNIDER BASIN 8060 8.7 8.3 105 9.5 9.6 99
SPRING CREEK DIVIDE 9000 15.7 14.9 105 16.5 15.9 104
TRIPLE PEAK 8500 15.5 14.3 108 17.2 13.8 125
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Basin wide percent of average 100 110
LOWER GREEN RIVER
HAMS FORK 7840 5.1 6.9 74 6.1 7.2 85
HEWINTA 9519 3.9 5.3 74 6.7 8.1 83
HICKERSON PARK 9145 1.5 3.6 42 4.1 4.7 87
HOLE-IN-ROCK 9150 1.9 3.3 58 4.1 4.3 95
INDIAN CREEK 9425 12.3 15.0 82 12.0 14.6 82
KELLEY R.S. 8180 7.3 9.1 80 9.1 12.1 75
STEEL CREEK PARK 10200 5.3 7.9 67 8.4 8.8 95
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Basin wide percent of average 73 84
UPPER BEAR RIVER
BUG LAKE 7950 6.1 10.7 57 9.2 11.1 83
HAYDEN FORK 9212 8.3 8.0 104 11.1 11.8 94
KELLEY R.S. 8180 7.3 9.1 80 9.1 12.1 75
LILY LAKE 9156 6.7 6.8 99 8.6 10.0 86
MONTE CRISTO 8960 12.8 14.4 89 13.7 14.4 95
SALT RIVER SUMMIT 7760 7.2 7.2 100 8.9 10.9 82
TRIAL LAKE 9992 11.2 13.0 86 11.3 13.6 83
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Basin wide percent of average 86 86
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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.