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 SUNDAY: DECEMBER 9 , 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 5.0 90 10.8 7.1 152
COTTONWOOD CREEK 7670 3.9 5.8 67 7.4 9.2 80
GRAND TARGHEE 9260 15.6 -M * 13.3 -M *
GRANITE CREEK 6770 2.5 4.4 57 8.1 6.4 127
GRASSY LAKE 7265 7.0 9.2 76 14.6 11.3 129
GROS VENTRE SUMMIT 8750 4.9 4.6 107 6.4 4.8 133
GUNSIGHT PASS 9820 3.3 -M * 6.1 -M *
LEWIS LAKE DIVIDE 7850 8.8 9.3 95 14.1 11.7 121
PHILLIPS BENCH 8200 6.2 7.8 79 10.7 8.8 122
SALT RIVER SUMMIT 7760 .8 3.3 24 3.4 5.8 59
SNAKE RIVER STATION 6920 3.1 5.0 62 10.6 7.5 141
SPRING CREEK DIVIDE 9000 4.3 8.3 52 5.8 8.6 67
THUMB DIVIDE 7980 3.4 4.8 71 7.6 6.3 121
TOGWOTEE PASS 9580 10.2 8.1 126 11.6 8.4 138
TWO OCEAN PLATEAU 9240 13.9 9.5 146 13.4 9.5 141
WILLOW CREEK 8380 5.0 9.2 54 10.6 10.8 98
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Basin wide percent of average 83 116
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 10.1 8.1 125 9.8 6.9 142
BLACK BEAR 8170 11.7 11.5 102 14.4 12.1 119
CANYON 7870 4.8 3.9 123 8.0 5.5 145
FISHER CREEK 9100 15.8 11.2 141 14.8 11.5 129
MADISON PLATEAU 7750 6.9 7.5 92 10.9 8.6 127
NORTHEAST ENTRANCE 7350 -M 3.2 * -M 4.6 *
PARKER PEAK 9400 9.4 7.6 124 9.7 6.2 156
SYLVAN LAKE 8420 6.4 7.4 86 10.6 8.1 131
THUMB DIVIDE 7980 3.4 4.8 71 7.6 6.3 121
TWO OCEAN PLATEAU 9240 13.9 9.5 146 13.4 9.5 141
WHISKEY CREEK 6800 3.9 4.7 83 9.2 6.8 135
WHITE MILL 8700 10.5 7.9 133 11.1 9.0 123
WOLVERINE 7650 2.8 3.7 76 6.3 5.1 124
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Basin wide percent of average 113 132
WIND RIVER
BURROUGHS CREEK 8750 6.6 4.7 140 9.3 5.6 166
COLD SPRINGS 9630 1.0 3.5 29 3.8 4.6 83
DEER PARK 9700 2.4 5.0 48 5.8 8.0 72
HOBBS PARK 10100 2.8 6.0 47 4.5 5.0 90
LITTLE WARM 9370 3.2 3.9 82 5.6 5.1 110
SOUTH PASS 9040 1.7 5.8 29 5.0 6.8 74
ST. LAWRENCE ALT 8620 1.0 2.9 34 2.8 3.8 74
TOGWOTEE PASS 9580 10.2 8.1 126 11.6 8.4 138
TOWNSEND CREEK 8700 1.1 3.2 34 4.2 4.9 86
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Basin wide percent of average 70 101
BIGHORN BASIN
BALD MTN. 9380 4.8 6.8 71 5.3 6.0 88
BEAR TRAP MEADOW 8200 2.1 1.9 111 3.6 3.7 97
BLACKWATER 9780 10.4 9.1 114 9.8 8.2 120
BONE SPRINGS DIV 9350 4.6 5.9 78 5.5 5.4 102
EVENING STAR 9200 11.1 9.9 112 13.4 9.3 144
GRAVE SPRINGS 8550 2.4 2.8 86 4.2 3.9 108
KIRWIN 9550 5.8 4.7 123 6.9 4.6 150
MARQUETTE 8760 .2 4.0 5 4.3 4.4 98
MIDDLE POWDER 7760 2.6 3.9 67 3.8 5.4 70
OWL CREEK 8975 1.9 2.1 90 3.8 2.4 158
POWDER RIVER PASS 9480 3.3 3.8 87 5.2 4.6 113
SHELL CREEK 9580 6.4 5.5 116 7.0 5.0 140
SYLVAN LAKE 8420 6.4 7.4 86 10.6 8.1 131
SYLVAN ROAD 7120 3.2 4.3 74 10.5 7.6 138
TIMBER CREEK 7950 .5 2.5 20 4.5 3.2 141
YOUNTS PEAK 8350 6.4 5.6 114 9.0 5.9 153
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Basin wide percent of average 90 122
SHOSHONE RIVER
BLACKWATER 9780 10.4 9.1 114 9.8 8.2 120
EVENING STAR 9200 11.1 9.9 112 13.4 9.3 144
KIRWIN 9550 5.8 4.7 123 6.9 4.6 150
MARQUETTE 8760 .2 4.0 5 4.3 4.4 98
SYLVAN LAKE 8420 6.4 7.4 86 10.6 8.1 131
SYLVAN ROAD 7120 3.2 4.3 74 10.5 7.6 138
YOUNTS PEAK 8350 6.4 5.6 114 9.0 5.9 153
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Basin wide percent of average 97 134
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.1 1.9 111 3.6 3.7 97
BIG GOOSE 7990 2.6 2.8 93 5.5 3.4 162
BONE SPRINGS DIV 9350 4.6 5.9 78 5.5 5.4 102
BURGESS JUNCTION 7880 2.7 3.8 71 4.7 4.6 102
CLOUD PEAK RESERVOIR 9860 4.7 4.2 112 6.4 5.2 123
DOME LAKE 8880 3.1 4.6 67 6.6 5.4 122
GRAVE SPRINGS 8550 2.4 2.8 86 4.2 3.9 108
HANSEN SAWMILL 8360 2.3 2.3 100 4.6 3.5 131
MIDDLE POWDER 7760 2.6 3.9 67 3.8 5.4 70
POWDER RIVER PASS 9480 3.3 3.8 87 5.2 4.6 113
SUCKER CREEK 8880 3.2 3.5 91 4.9 5.0 98
TIE CREEK 6870 .3 1.3 23 4.2 4.0 105
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Basin wide percent of average 83 109
BELLE FOURCHE
BLIND PARK 6890 1.2 2.2 55 3.1 4.8 65
COLE CANYON 5910 .4 2.3 17 2.2 3.2 69
NORTH RAPID CREEK 6130 1.7 2.0 85 2.4 4.1 59
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Basin wide percent of average 51 64
UPPER N. PLATTE RIVER
COLUMBINE 9160 4.3 6.0 72 8.0 7.5 107
DIVIDE PEAK 8880 5.9 6.0 98 7.0 7.1 99
ELK RIVER 8700 4.2 3.9 108 6.9 6.0 115
JOE WRIGHT 10120 7.2 7.0 103 9.4 8.7 108
NORTH FRENCH CREEK 10130 9.0 9.1 99 10.2 8.5 120
OLD BATTLE 10000 8.5 10.4 82 10.9 10.8 101
SAGE CREEK BASIN 7850 2.8 3.5 80 5.6 4.1 137
SOUTH BRUSH CREEK 8440 3.8 3.4 112 6.7 5.8 116
TOWER 10500 9.3 14.5 64 12.0 12.3 98
WEBBER SPRINGS 9250 6.0 7.8 77 8.7 9.0 97
WILLOW CREEK PASS 9540 5.7 4.1 139 6.5 4.9 133
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Basin wide percent of average 88 109
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 5.9 7.0 84 7.3 7.1 103
CASPER MTN. 7900 1.5 5.2 29 5.1 5.8 88
DEADMAN HILL 10220 5.9 5.6 105 6.1 5.9 103
DEER PARK 9700 2.4 5.0 48 5.8 8.0 72
LAPRELE CREEK 8375 .5 3.7 14 3.4 4.7 72
RENO HILL 8400 2.8 4.8 58 5.0 5.6 89
ROACH 9700 5.6 5.0 112 7.5 6.0 125
SAND LAKE 10050 8.7 10.6 82 9.4 8.2 115
SOUTH PASS 9040 1.7 5.8 29 5.0 6.8 74
WINDY PEAK 7900 1.5 2.6 58 3.2 4.2 76
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Basin wide percent of average 66 93
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.2 2.2 100 5.2 5.0 104
DIVIDE PEAK 8880 5.9 6.0 98 7.0 7.1 99
OLD BATTLE 10000 8.5 10.4 82 10.9 10.8 101
SANDSTONE RS 8150 2.6 2.9 90 6.2 6.2 100
WHISKEY PARK 8950 6.0 7.2 83 9.4 9.1 103
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Basin wide percent of average 88 101
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.7 4.7 57 3.6 4.8 75
BLIND BULL SUM 8650 5.4 8.5 64 5.8 7.6 76
EAST RIM DIVIDE 7930 .9 3.8 24 3.6 4.0 90
ELKHART PARK G.S. 9400 2.7 4.2 64 4.1 4.9 84
GROS VENTRE SUMMIT 8750 4.9 4.6 107 6.4 4.8 133
GUNSIGHT PASS 9820 3.3 -M * 6.1 -M *
KENDALL R.S. 7740 2.1 4.0 52 4.6 4.7 98
LOOMIS PARK 8240 3.2 5.3 60 5.0 5.7 88
NEW FORK LAKE 8340 2.0 3.4 59 3.3 4.3 77
SNIDER BASIN 8060 1.5 4.4 34 3.3 5.2 63
SPRING CREEK DIVIDE 9000 4.3 8.3 52 5.8 8.6 67
TRIPLE PEAK 8500 5.2 7.6 68 8.0 7.6 105
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Basin wide percent of average 59 86
LOWER GREEN RIVER
HAMS FORK 7840 .7 3.1 23 2.7 4.0 68
HEWINTA 9519 .7 2.5 28 5.6 5.5 102
HICKERSON PARK 9145 .9 1.8 50 3.4 3.5 97
HOLE-IN-ROCK 9150 .6 1.7 35 4.0 3.2 125
INDIAN CREEK 9425 3.7 8.0 46 4.6 8.1 57
KELLEY R.S. 8180 1.8 5.0 36 4.4 6.7 66
STEEL CREEK PARK 10200 2.4 4.6 52 6.3 5.7 111
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Basin wide percent of average 40 84
UPPER BEAR RIVER
BUG LAKE 7950 -M 4.9 * 3.1 6.6 47
HAYDEN FORK 9212 2.7 3.7 73 5.6 7.1 79
KELLEY R.S. 8180 1.8 5.0 36 4.4 6.7 66
LILY LAKE 9156 1.5 3.5 43 5.2 6.4 81
MONTE CRISTO 8960 3.7 6.4 58 5.8 8.4 69
SALT RIVER SUMMIT 7760 .8 3.3 24 3.4 5.8 59
TRIAL LAKE 9992 4.3 6.7 64 5.9 7.7 77
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Basin wide percent of average 52 69
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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.