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: DECEMBER 24 , 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 6.2 7.0 89 12.5 9.2 136
COTTONWOOD CREEK 7670 6.0 8.3 72 9.3 11.8 79
GRAND TARGHEE 9260 19.0 -M * 15.2 -M *
GRANITE CREEK 6770 4.1 6.4 64 9.8 8.3 118
GRASSY LAKE 7265 10.2 12.6 81 17.9 15.0 119
GROS VENTRE SUMMIT 8750 5.9 6.0 98 7.3 5.8 126
GUNSIGHT PASS 9820 3.7 -M * 7.0 -M *
LEWIS LAKE DIVIDE 7850 11.9 12.6 94 18.0 15.3 118
PHILLIPS BENCH 8200 8.4 10.9 77 12.9 11.7 110
SALT RIVER SUMMIT 7760 2.4 4.6 52 4.9 7.8 63
SNAKE RIVER STATION 6920 5.0 6.8 74 12.8 9.7 132
SPRING CREEK DIVIDE 9000 6.1 11.0 55 7.5 11.3 66
THUMB DIVIDE 7980 5.5 6.6 83 9.3 8.0 116
TOGWOTEE PASS 9580 11.8 10.3 115 13.4 10.6 126
TWO OCEAN PLATEAU 9240 16.8 12.0 140 15.7 12.0 131
WILLOW CREEK 8380 7.8 12.4 63 13.6 13.7 99
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Basin wide percent of average 85 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.0 10.1 119 11.6 8.9 130
BLACK BEAR 8170 17.6 15.1 117 19.4 15.5 125
CANYON 7870 6.3 5.2 121 9.5 6.9 138
FISHER CREEK 9100 19.2 14.4 133 17.9 15.0 119
MADISON PLATEAU 7750 10.5 9.8 107 14.5 11.0 132
NORTHEAST ENTRANCE 7350 2.3 4.3 53 6.5 5.8 112
PARKER PEAK 9400 11.7 9.3 126 11.4 7.5 152
SYLVAN LAKE 8420 8.3 9.4 88 12.7 10.0 127
THUMB DIVIDE 7980 5.5 6.6 83 9.3 8.0 116
TWO OCEAN PLATEAU 9240 16.8 12.0 140 15.7 12.0 131
WHISKEY CREEK 6800 6.2 6.5 95 11.7 8.8 133
WHITE MILL 8700 11.9 10.0 119 11.9 11.4 104
WOLVERINE 7650 3.5 4.9 71 7.3 6.4 114
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Basin wide percent of average 112 125
WIND RIVER
BURROUGHS CREEK 8750 7.5 5.9 127 10.2 7.1 144
COLD SPRINGS 9630 1.8 4.2 43 4.5 5.3 85
DEER PARK 9700 4.4 6.0 73 7.7 9.8 79
HOBBS PARK 10100 4.1 7.1 58 5.8 5.9 98
LITTLE WARM 9370 3.9 4.7 83 6.4 6.1 105
SOUTH PASS 9040 3.7 7.4 50 6.7 8.4 80
ST. LAWRENCE ALT 8620 1.9 3.5 54 3.6 4.3 84
TOGWOTEE PASS 9580 11.8 10.3 115 13.4 10.6 126
TOWNSEND CREEK 8700 2.3 4.0 57 5.3 5.6 95
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Basin wide percent of average 78 101
BIGHORN BASIN
BALD MTN. 9380 5.6 8.7 64 6.6 7.5 88
BEAR TRAP MEADOW 8200 2.9 2.3 126 4.2 4.2 100
BLACKWATER 9780 11.5 10.9 106 11.1 9.9 112
BONE SPRINGS DIV 9350 5.3 7.1 75 5.8 6.6 88
EVENING STAR 9200 13.0 12.2 107 14.3 11.6 123
GRAVE SPRINGS 8550 3.0 3.7 81 4.7 4.5 104
KIRWIN 9550 6.5 5.4 120 7.5 5.4 139
MARQUETTE 8760 1.3 4.6 28 5.5 5.0 110
MIDDLE POWDER 7760 3.4 5.1 67 4.4 6.3 70
OWL CREEK 8975 2.4 2.4 100 4.1 2.7 152
POWDER RIVER PASS 9480 3.9 4.7 83 5.8 5.4 107
SHELL CREEK 9580 6.9 6.7 103 7.4 6.0 123
SYLVAN LAKE 8420 8.3 9.4 88 12.7 10.0 127
SYLVAN ROAD 7120 4.0 5.4 74 11.7 9.3 126
TIMBER CREEK 7950 1.5 2.9 52 5.1 3.5 146
YOUNTS PEAK 8350 7.3 6.9 106 9.9 7.3 136
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Basin wide percent of average 88 115
SHOSHONE RIVER
BLACKWATER 9780 11.5 10.9 106 11.1 9.9 112
EVENING STAR 9200 13.0 12.2 107 14.3 11.6 123
KIRWIN 9550 6.5 5.4 120 7.5 5.4 139
MARQUETTE 8760 1.3 4.6 28 5.5 5.0 110
SYLVAN LAKE 8420 8.3 9.4 88 12.7 10.0 127
SYLVAN ROAD 7120 4.0 5.4 74 11.7 9.3 126
YOUNTS PEAK 8350 7.3 6.9 106 9.9 7.3 136
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Basin wide percent of average 95 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.9 2.3 126 4.2 4.2 100
BIG GOOSE 7990 3.2 3.8 84 6.3 4.2 150
BONE SPRINGS DIV 9350 5.3 7.1 75 5.8 6.6 88
BURGESS JUNCTION 7880 3.6 5.0 72 6.0 5.6 107
CLOUD PEAK RESERVOIR 9860 5.6 5.1 110 7.3 6.0 122
DOME LAKE 8880 4.0 5.5 73 7.3 6.3 116
GRAVE SPRINGS 8550 3.0 3.7 81 4.7 4.5 104
HANSEN SAWMILL 8360 2.7 2.8 96 4.9 4.0 123
MIDDLE POWDER 7760 3.4 5.1 67 4.4 6.3 70
POWDER RIVER PASS 9480 3.9 4.7 83 5.8 5.4 107
SUCKER CREEK 8880 4.1 4.7 87 6.0 6.1 98
TIE CREEK 6870 1.2 2.2 55 5.0 4.7 106
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Basin wide percent of average 82 106
BELLE FOURCHE
BLIND PARK 6890 1.6 2.9 55 3.7 5.7 65
COLE CANYON 5910 1.2 2.9 41 2.8 3.6 78
NORTH RAPID CREEK 6130 2.4 2.8 86 2.9 4.9 59
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Basin wide percent of average 60 66
UPPER N. PLATTE RIVER
COLUMBINE 9160 5.7 8.4 68 9.3 10.0 93
DIVIDE PEAK 8880 8.7 8.0 109 9.4 8.9 106
ELK RIVER 8700 6.3 5.9 107 9.1 7.7 118
JOE WRIGHT 10120 8.7 8.6 101 10.9 10.7 102
NORTH FRENCH CREEK 10130 11.0 11.8 93 12.2 10.7 114
OLD BATTLE 10000 11.3 13.1 86 14.3 14.0 102
SAGE CREEK BASIN 7850 6.1 4.6 133 7.6 5.2 146
SOUTH BRUSH CREEK 8440 5.1 4.5 113 8.4 7.0 120
TOWER 10500 11.2 18.3 61 14.3 15.7 91
WEBBER SPRINGS 9250 8.4 10.2 82 11.2 11.5 97
WILLOW CREEK PASS 9540 6.4 5.0 128 7.6 5.9 129
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Basin wide percent of average 90 107
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.4 9.3 80 8.8 9.0 98
CASPER MTN. 7900 3.3 6.3 52 6.4 6.7 96
DEADMAN HILL 10220 6.9 6.8 101 7.1 7.1 100
DEER PARK 9700 4.4 6.0 73 7.7 9.8 79
LAPRELE CREEK 8375 1.2 4.7 26 4.1 5.6 73
RENO HILL 8400 4.3 6.0 72 6.1 6.6 92
ROACH 9700 7.5 6.4 117 9.5 7.5 127
SAND LAKE 10050 10.5 13.4 78 11.1 10.3 108
SOUTH PASS 9040 3.7 7.4 50 6.7 8.4 80
WINDY PEAK 7900 2.1 3.2 66 3.9 5.0 78
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Basin wide percent of average 74 94
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.5 3.2 141 7.3 6.3 116
DIVIDE PEAK 8880 8.7 8.0 109 9.4 8.9 106
OLD BATTLE 10000 11.3 13.1 86 14.3 14.0 102
SANDSTONE RS 8150 5.5 4.3 128 8.7 7.8 112
WHISKEY PARK 8950 8.6 9.4 91 12.6 11.6 109
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Basin wide percent of average 102 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.9 6.1 64 4.8 5.9 81
BLIND BULL SUM 8650 7.3 11.5 63 7.4 9.8 76
EAST RIM DIVIDE 7930 1.8 5.2 35 4.0 5.1 78
ELKHART PARK G.S. 9400 3.6 5.5 65 5.1 6.0 85
GROS VENTRE SUMMIT 8750 5.9 6.0 98 7.3 5.8 126
GUNSIGHT PASS 9820 3.7 -M * 7.0 -M *
KENDALL R.S. 7740 3.1 5.7 54 5.5 6.0 92
LOOMIS PARK 8240 4.4 7.0 63 6.2 7.3 85
NEW FORK LAKE 8340 2.6 4.7 55 3.9 5.3 74
SNIDER BASIN 8060 2.6 6.0 43 4.5 6.9 65
SPRING CREEK DIVIDE 9000 6.1 11.0 55 7.5 11.3 66
TRIPLE PEAK 8500 6.9 10.3 67 9.8 9.8 100
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Basin wide percent of average 61 83
LOWER GREEN RIVER
HAMS FORK 7840 1.8 4.6 39 3.5 5.1 69
HEWINTA 9519 1.7 3.5 49 6.6 6.5 102
HICKERSON PARK 9145 1.4 2.5 56 4.2 3.9 108
HOLE-IN-ROCK 9150 1.2 2.3 52 4.4 3.6 122
INDIAN CREEK 9425 6.1 10.9 56 6.6 10.6 62
KELLEY R.S. 8180 3.6 6.7 54 6.2 8.8 70
STEEL CREEK PARK 10200 3.0 5.9 51 7.3 6.9 106
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Basin wide percent of average 52 85
UPPER BEAR RIVER
BUG LAKE 7950 2.8 6.9 41 5.0 8.2 61
HAYDEN FORK 9212 3.8 5.3 72 7.4 8.9 83
KELLEY R.S. 8180 3.6 6.7 54 6.2 8.8 70
LILY LAKE 9156 2.4 4.7 51 6.7 7.8 86
MONTE CRISTO 8960 5.9 9.2 64 7.8 10.7 73
SALT RIVER SUMMIT 7760 2.4 4.6 52 4.9 7.8 63
TRIAL LAKE 9992 5.6 9.0 62 7.6 9.9 77
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Basin wide percent of average 57 73
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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.