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: DECEMBER 27 , 2007
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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 6.5 7.4 88 12.9 9.6 134
COTTONWOOD CREEK 7670 6.7 8.7 77 9.9 12.4 80
GRAND TARGHEE 9260 20.2 -M * 15.7 -M *
GRANITE CREEK 6770 4.3 6.8 63 10.0 8.7 115
GRASSY LAKE 7265 10.9 13.3 82 18.7 15.7 119
GROS VENTRE SUMMIT 8750 5.9 6.3 94 7.3 6.0 122
GUNSIGHT PASS 9820 3.7 -M * 7.0 -M *
LEWIS LAKE DIVIDE 7850 12.4 13.3 93 18.2 16.0 114
PHILLIPS BENCH 8200 8.9 11.5 77 13.4 12.3 109
SALT RIVER SUMMIT 7760 2.6 4.8 54 5.0 8.1 62
SNAKE RIVER STATION 6920 5.2 7.1 73 13.1 10.2 128
SPRING CREEK DIVIDE 9000 6.4 11.5 56 7.6 11.8 64
THUMB DIVIDE 7980 5.6 6.9 81 9.4 8.4 112
TOGWOTEE PASS 9580 12.1 10.7 113 13.8 11.1 124
TWO OCEAN PLATEAU 9240 17.5 12.5 140 16.1 12.5 129
WILLOW CREEK 8380 8.8 13.0 68 14.6 14.3 102
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Basin wide percent of average 85 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.2 10.5 116 11.7 9.2 127
BLACK BEAR 8170 18.5 15.7 118 20.2 16.2 125
CANYON 7870 6.7 5.4 124 9.8 7.2 136
FISHER CREEK 9100 20.0 15.0 133 18.4 15.7 117
MADISON PLATEAU 7750 11.2 10.2 110 15.0 11.5 130
NORTHEAST ENTRANCE 7350 2.5 4.5 56 6.7 6.0 112
PARKER PEAK 9400 12.2 9.7 126 12.2 7.7 158
SYLVAN LAKE 8420 8.9 9.6 93 13.5 10.3 131
THUMB DIVIDE 7980 5.6 6.9 81 9.4 8.4 112
TWO OCEAN PLATEAU 9240 17.5 12.5 140 16.1 12.5 129
WHISKEY CREEK 6800 6.5 6.7 97 12.1 9.1 133
WHITE MILL 8700 12.4 10.3 120 13.0 11.9 109
WOLVERINE 7650 3.7 5.2 71 7.4 6.6 112
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Basin wide percent of average 113 125
WIND RIVER
BURROUGHS CREEK 8750 7.7 6.2 124 10.4 7.4 141
COLD SPRINGS 9630 1.9 4.4 43 4.8 5.4 89
DEER PARK 9700 4.8 6.1 79 8.2 10.2 80
HOBBS PARK 10100 4.5 7.2 62 6.1 6.1 100
LITTLE WARM 9370 3.9 5.0 78 6.5 6.3 103
SOUTH PASS 9040 4.2 7.6 55 7.2 8.6 84
ST. LAWRENCE ALT 8620 2.3 3.6 64 4.0 4.4 91
TOGWOTEE PASS 9580 12.1 10.7 113 13.8 11.1 124
TOWNSEND CREEK 8700 2.7 4.1 66 5.8 5.8 100
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Basin wide percent of average 80 102
BIGHORN BASIN
BALD MTN. 9380 6.1 9.1 67 7.1 7.8 91
BEAR TRAP MEADOW 8200 3.6 2.4 150 5.0 4.3 116
BLACKWATER 9780 11.8 11.1 106 11.2 10.2 110
BONE SPRINGS DIV 9350 6.2 7.4 84 6.9 6.8 101
EVENING STAR 9200 13.4 12.6 106 15.4 12.0 128
GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.6 111
KIRWIN 9550 6.6 5.5 120 7.9 5.6 141
MARQUETTE 8760 1.5 4.8 31 5.5 5.1 108
MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75
OWL CREEK 8975 2.5 2.5 100 4.2 2.8 150
POWDER RIVER PASS 9480 4.4 4.9 90 6.4 5.6 114
SHELL CREEK 9580 7.3 6.9 106 7.8 6.3 124
SYLVAN LAKE 8420 8.9 9.6 93 13.5 10.3 131
SYLVAN ROAD 7120 4.3 5.6 77 12.0 9.6 125
TIMBER CREEK 7950 1.6 2.9 55 5.5 3.6 153
YOUNTS PEAK 8350 7.5 7.2 104 10.1 7.6 133
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Basin wide percent of average 92 118
SHOSHONE RIVER
BLACKWATER 9780 11.8 11.1 106 11.2 10.2 110
EVENING STAR 9200 13.4 12.6 106 15.4 12.0 128
KIRWIN 9550 6.6 5.5 120 7.9 5.6 141
MARQUETTE 8760 1.5 4.8 31 5.5 5.1 108
SYLVAN LAKE 8420 8.9 9.6 93 13.5 10.3 131
SYLVAN ROAD 7120 4.3 5.6 77 12.0 9.6 125
YOUNTS PEAK 8350 7.5 7.2 104 10.1 7.6 133
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Basin wide percent of average 96 125
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.6 2.4 150 5.0 4.3 116
BIG GOOSE 7990 3.8 4.0 95 6.7 4.3 156
BONE SPRINGS DIV 9350 6.2 7.4 84 6.9 6.8 101
BURGESS JUNCTION 7880 4.5 5.2 87 6.6 5.7 116
CLOUD PEAK RESERVOIR 9860 5.9 5.4 109 7.5 6.1 123
DOME LAKE 8880 4.4 5.7 77 7.8 6.5 120
GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.6 111
HANSEN SAWMILL 8360 3.0 3.0 100 5.1 4.1 124
MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75
POWDER RIVER PASS 9480 4.4 4.9 90 6.4 5.6 114
SUCKER CREEK 8880 4.8 5.0 96 6.6 6.3 105
TIE CREEK 6870 1.9 2.3 83 5.8 4.8 121
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Basin wide percent of average 92 113
BELLE FOURCHE
BLIND PARK 6890 1.8 3.2 56 3.8 5.9 64
COLE CANYON 5910 1.4 3.1 45 3.0 3.7 81
NORTH RAPID CREEK 6130 2.6 3.0 87 3.1 5.0 62
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Basin wide percent of average 62 68
UPPER N. PLATTE RIVER
COLUMBINE 9160 6.0 8.9 67 9.5 10.5 90
DIVIDE PEAK 8880 9.5 8.4 113 10.2 9.3 110
ELK RIVER 8700 6.8 6.3 108 9.4 8.1 116
JOE WRIGHT 10120 9.1 9.0 101 11.2 11.1 101
NORTH FRENCH CREEK 10130 11.7 12.3 95 12.8 11.1 115
OLD BATTLE 10000 12.0 13.7 88 14.9 14.7 101
SAGE CREEK BASIN 7850 6.8 4.9 139 8.2 5.4 152
SOUTH BRUSH CREEK 8440 5.6 4.7 119 8.8 7.3 121
TOWER 10500 11.9 19.0 63 15.2 16.5 92
WEBBER SPRINGS 9250 9.0 10.6 85 11.8 12.0 98
WILLOW CREEK PASS 9540 6.7 5.2 129 7.8 6.1 128
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Basin wide percent of average 92 107
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.6 9.8 78 9.1 9.4 97
CASPER MTN. 7900 4.7 6.5 72 7.4 6.9 107
DEADMAN HILL 10220 7.2 7.1 101 7.3 7.3 100
DEER PARK 9700 4.8 6.1 79 8.2 10.2 80
LAPRELE CREEK 8375 1.8 4.9 37 4.7 5.8 81
RENO HILL 8400 5.3 6.2 85 6.9 6.8 101
ROACH 9700 8.0 6.7 119 10.0 7.8 128
SAND LAKE 10050 10.8 13.9 78 11.4 10.7 107
SOUTH PASS 9040 4.2 7.6 55 7.2 8.6 84
WINDY PEAK 7900 2.7 3.3 82 4.4 5.2 85
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Basin wide percent of average 79 97
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 3.5 146 7.8 6.6 118
DIVIDE PEAK 8880 9.5 8.4 113 10.2 9.3 110
OLD BATTLE 10000 12.0 13.7 88 14.9 14.7 101
SANDSTONE RS 8150 5.9 4.6 128 9.2 8.2 112
WHISKEY PARK 8950 9.1 10.0 91 13.1 12.1 108
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Basin wide percent of average 103 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.0 6.4 62 4.8 6.1 79
BLIND BULL SUM 8650 7.6 12.1 63 7.6 10.2 75
EAST RIM DIVIDE 7930 1.6 5.4 30 4.3 5.3 81
ELKHART PARK G.S. 9400 3.6 5.8 62 4.9 6.2 79
GROS VENTRE SUMMIT 8750 5.9 6.3 94 7.3 6.0 122
GUNSIGHT PASS 9820 3.7 -M * 7.0 -M *
KENDALL R.S. 7740 3.1 6.0 52 5.6 6.3 89
LOOMIS PARK 8240 4.6 7.4 62 6.2 7.6 82
NEW FORK LAKE 8340 2.7 4.9 55 3.6 5.5 65
SNIDER BASIN 8060 2.5 6.3 40 4.1 7.2 57
SPRING CREEK DIVIDE 9000 6.4 11.5 56 7.6 11.8 64
TRIPLE PEAK 8500 7.2 10.8 67 10.1 10.2 99
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Basin wide percent of average 59 80
LOWER GREEN RIVER
HAMS FORK 7840 1.9 4.9 39 3.5 5.3 66
HEWINTA 9519 2.0 3.7 54 6.9 6.6 105
HICKERSON PARK 9145 1.4 2.6 54 4.1 4.0 102
HOLE-IN-ROCK 9150 1.2 2.4 50 4.7 3.7 127
INDIAN CREEK 9425 6.4 11.4 56 6.9 11.1 62
KELLEY R.S. 8180 3.8 7.0 54 6.5 9.2 71
STEEL CREEK PARK 10200 3.3 6.2 53 7.7 7.1 108
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Basin wide percent of average 52 86
UPPER BEAR RIVER
BUG LAKE 7950 3.0 7.4 41 4.9 8.5 58
HAYDEN FORK 9212 4.2 5.6 75 7.5 9.2 82
KELLEY R.S. 8180 3.8 7.0 54 6.5 9.2 71
LILY LAKE 9156 2.8 5.0 56 6.6 8.1 81
MONTE CRISTO 8960 6.5 9.8 66 8.2 11.2 73
SALT RIVER SUMMIT 7760 2.6 4.8 54 5.0 8.1 62
TRIAL LAKE 9992 5.8 9.5 61 7.8 10.3 76
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Basin wide percent of average 58 72
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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.