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 13 , 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 4.5 5.6 80 10.9 7.7 142
COTTONWOOD CREEK 7670 3.8 6.5 58 7.5 9.9 76
GRAND TARGHEE 9260 15.8 -M * 13.4 -M *
GRANITE CREEK 6770 2.5 4.9 51 8.2 6.9 119
GRASSY LAKE 7265 7.4 10.1 73 15.0 12.3 122
GROS VENTRE SUMMIT 8750 4.9 5.0 98 6.5 5.1 127
GUNSIGHT PASS 9820 3.2 -M * 6.2 -M *
LEWIS LAKE DIVIDE 7850 9.0 10.2 88 14.8 12.7 117
PHILLIPS BENCH 8200 6.3 8.7 72 10.9 9.6 114
SALT RIVER SUMMIT 7760 .8 3.6 22 3.4 6.4 53
SNAKE RIVER STATION 6920 3.2 5.5 58 10.8 8.1 133
SPRING CREEK DIVIDE 9000 4.4 9.0 49 5.9 9.3 63
THUMB DIVIDE 7980 3.5 5.3 66 7.6 6.7 113
TOGWOTEE PASS 9580 10.3 8.7 118 11.8 9.0 131
TWO OCEAN PLATEAU 9240 14.1 10.2 138 13.5 10.2 132
WILLOW CREEK 8380 5.3 10.1 52 10.8 11.6 93
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Basin wide percent of average 77 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 10.4 8.6 121 10.1 7.5 135
BLACK BEAR 8170 12.0 12.5 96 14.8 13.0 114
CANYON 7870 4.9 4.3 114 8.1 5.8 140
FISHER CREEK 9100 16.0 12.1 132 15.5 12.4 125
MADISON PLATEAU 7750 7.2 8.1 89 11.3 9.3 122
NORTHEAST ENTRANCE 7350 1.8 3.5 51 6.0 4.9 122
PARKER PEAK 9400 9.7 8.1 120 10.1 6.6 153
SYLVAN LAKE 8420 6.7 8.0 84 11.0 8.7 126
THUMB DIVIDE 7980 3.5 5.3 66 7.6 6.7 113
TWO OCEAN PLATEAU 9240 14.1 10.2 138 13.5 10.2 132
WHISKEY CREEK 6800 4.0 5.2 77 9.5 7.4 128
WHITE MILL 8700 10.6 8.4 126 11.4 9.7 118
WOLVERINE 7650 2.8 4.0 70 6.6 5.5 120
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Basin wide percent of average 105 126
WIND RIVER
BURROUGHS CREEK 8750 6.8 5.1 133 9.5 6.0 158
COLD SPRINGS 9630 1.2 3.7 32 4.1 4.8 85
DEER PARK 9700 2.6 5.2 50 5.9 8.5 69
HOBBS PARK 10100 3.0 6.3 48 4.8 5.3 91
LITTLE WARM 9370 3.3 4.2 79 5.8 5.4 107
SOUTH PASS 9040 2.1 6.4 33 5.2 7.3 71
ST. LAWRENCE ALT 8620 1.2 3.2 37 3.0 3.9 77
TOGWOTEE PASS 9580 10.3 8.7 118 11.8 9.0 131
TOWNSEND CREEK 8700 1.2 3.5 34 4.4 5.1 86
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Basin wide percent of average 68 99
BIGHORN BASIN
BALD MTN. 9380 4.9 7.1 69 6.1 6.4 95
BEAR TRAP MEADOW 8200 2.2 2.0 110 3.7 3.8 97
BLACKWATER 9780 10.5 9.6 109 10.0 8.7 115
BONE SPRINGS DIV 9350 4.7 6.1 77 5.6 5.7 98
EVENING STAR 9200 11.2 10.7 105 13.5 9.9 136
GRAVE SPRINGS 8550 2.5 3.0 83 4.3 4.1 105
KIRWIN 9550 6.0 4.9 122 7.2 4.8 150
MARQUETTE 8760 .4 4.2 10 4.6 4.6 100
MIDDLE POWDER 7760 2.6 4.1 63 3.8 5.6 68
OWL CREEK 8975 2.1 2.2 95 3.9 2.5 156
POWDER RIVER PASS 9480 3.4 3.9 87 5.3 4.8 110
SHELL CREEK 9580 6.5 5.8 112 7.1 5.3 134
SYLVAN LAKE 8420 6.7 8.0 84 11.0 8.7 126
SYLVAN ROAD 7120 3.2 4.6 70 10.7 8.1 132
TIMBER CREEK 7950 .8 2.5 32 4.8 3.3 145
YOUNTS PEAK 8350 6.3 6.0 105 9.3 6.2 150
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Basin wide percent of average 87 120
SHOSHONE RIVER
BLACKWATER 9780 10.5 9.6 109 10.0 8.7 115
EVENING STAR 9200 11.2 10.7 105 13.5 9.9 136
KIRWIN 9550 6.0 4.9 122 7.2 4.8 150
MARQUETTE 8760 .4 4.2 10 4.6 4.6 100
SYLVAN LAKE 8420 6.7 8.0 84 11.0 8.7 126
SYLVAN ROAD 7120 3.2 4.6 70 10.7 8.1 132
YOUNTS PEAK 8350 6.3 6.0 105 9.3 6.2 150
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Basin wide percent of average 92 130
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.2 2.0 110 3.7 3.8 97
BIG GOOSE 7990 2.8 3.1 90 5.7 3.7 154
BONE SPRINGS DIV 9350 4.7 6.1 77 5.6 5.7 98
BURGESS JUNCTION 7880 2.8 4.1 68 5.4 4.9 110
CLOUD PEAK RESERVOIR 9860 4.8 4.4 109 6.8 5.4 126
DOME LAKE 8880 3.4 4.8 71 6.8 5.7 119
GRAVE SPRINGS 8550 2.5 3.0 83 4.3 4.1 105
HANSEN SAWMILL 8360 2.4 2.5 96 4.7 3.6 131
MIDDLE POWDER 7760 2.6 4.1 63 3.8 5.6 68
POWDER RIVER PASS 9480 3.4 3.9 87 5.3 4.8 110
SUCKER CREEK 8880 3.4 3.8 89 5.3 5.3 100
TIE CREEK 6870 .5 1.4 36 4.3 4.2 102
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Basin wide percent of average 82 109
BELLE FOURCHE
BLIND PARK 6890 1.2 2.3 52 3.1 5.1 61
COLE CANYON 5910 .6 2.6 23 2.4 3.3 73
NORTH RAPID CREEK 6130 1.9 2.3 83 2.5 4.3 58
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Basin wide percent of average 51 63
UPPER N. PLATTE RIVER
COLUMBINE 9160 4.3 6.6 65 8.0 8.2 98
DIVIDE PEAK 8880 6.6 6.5 102 7.7 7.6 101
ELK RIVER 8700 4.8 4.4 109 7.5 6.5 115
JOE WRIGHT 10120 7.7 7.4 104 9.8 9.2 107
NORTH FRENCH CREEK 10130 9.2 9.8 94 10.4 9.1 114
OLD BATTLE 10000 9.1 11.2 81 11.4 11.7 97
SAGE CREEK BASIN 7850 4.0 3.8 105 5.9 4.4 134
SOUTH BRUSH CREEK 8440 4.0 3.7 108 7.2 6.1 118
TOWER 10500 9.4 15.6 60 12.3 13.3 92
WEBBER SPRINGS 9250 6.6 8.5 78 9.4 9.6 98
WILLOW CREEK PASS 9540 5.9 4.3 137 6.9 5.2 133
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Basin wide percent of average 88 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 6.5 7.6 86 7.9 7.6 104
CASPER MTN. 7900 1.7 5.5 31 5.4 6.0 90
DEADMAN HILL 10220 6.2 5.9 105 6.2 6.2 100
DEER PARK 9700 2.6 5.2 50 5.9 8.5 69
LAPRELE CREEK 8375 .7 4.0 18 3.7 4.9 76
RENO HILL 8400 3.3 5.1 65 5.2 5.8 90
ROACH 9700 6.1 5.3 115 7.9 6.4 123
SAND LAKE 10050 9.2 11.4 81 9.8 8.8 111
SOUTH PASS 9040 2.1 6.4 33 5.2 7.3 71
WINDY PEAK 7900 1.8 2.8 64 3.5 4.4 80
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Basin wide percent of average 68 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.6 2.4 108 5.4 5.4 100
DIVIDE PEAK 8880 6.6 6.5 102 7.7 7.6 101
OLD BATTLE 10000 9.1 11.2 81 11.4 11.7 97
SANDSTONE RS 8150 3.2 3.3 97 6.5 6.7 97
WHISKEY PARK 8950 6.4 7.8 82 9.9 9.8 101
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Basin wide percent of average 89 99
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.6 5.1 51 3.6 5.1 71
BLIND BULL SUM 8650 5.5 9.3 59 5.9 8.2 72
EAST RIM DIVIDE 7930 1.0 4.2 24 3.7 4.3 86
ELKHART PARK G.S. 9400 2.7 4.5 60 3.9 5.2 75
GROS VENTRE SUMMIT 8750 4.9 5.0 98 6.5 5.1 127
GUNSIGHT PASS 9820 3.2 -M * 6.2 -M *
KENDALL R.S. 7740 2.0 4.4 45 4.6 5.0 92
LOOMIS PARK 8240 3.2 5.8 55 5.0 6.1 82
NEW FORK LAKE 8340 2.0 3.7 54 3.4 4.5 76
SNIDER BASIN 8060 1.5 4.8 31 3.5 5.7 61
SPRING CREEK DIVIDE 9000 4.4 9.0 49 5.9 9.3 63
TRIPLE PEAK 8500 5.2 8.4 62 8.1 8.2 99
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Basin wide percent of average 55 81
LOWER GREEN RIVER
HAMS FORK 7840 .8 3.5 23 2.7 4.3 63
HEWINTA 9519 .9 2.8 32 5.8 5.8 100
HICKERSON PARK 9145 1.0 2.0 50 3.5 3.6 97
HOLE-IN-ROCK 9150 .7 1.9 37 4.1 3.3 124
INDIAN CREEK 9425 3.7 8.8 42 4.7 8.8 53
KELLEY R.S. 8180 1.9 5.5 35 4.5 7.2 62
STEEL CREEK PARK 10200 1.9 4.9 39 6.3 6.0 105
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Basin wide percent of average 37 81
UPPER BEAR RIVER
BUG LAKE 7950 -M 5.4 * 3.2 7.0 46
HAYDEN FORK 9212 2.6 4.1 63 5.7 7.6 75
KELLEY R.S. 8180 1.9 5.5 35 4.5 7.2 62
LILY LAKE 9156 1.5 3.8 39 5.5 6.8 81
MONTE CRISTO 8960 4.0 7.1 56 6.1 9.1 67
SALT RIVER SUMMIT 7760 .8 3.6 22 3.4 6.4 53
TRIAL LAKE 9992 4.1 7.3 56 5.9 8.3 71
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Basin wide percent of average 47 65
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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.