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 17 , 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 4.7 6.1 77 11.1 8.3 134
COTTONWOOD CREEK 7670 4.1 7.1 58 7.7 10.6 73
GRAND TARGHEE 9260 16.4 -M * 13.9 -M *
GRANITE CREEK 6770 2.5 5.4 46 8.4 7.4 114
GRASSY LAKE 7265 7.8 11.0 71 15.4 13.3 116
GROS VENTRE SUMMIT 8750 5.1 5.4 94 6.7 5.3 126
GUNSIGHT PASS 9820 3.3 -M * 6.3 -M *
LEWIS LAKE DIVIDE 7850 9.2 11.1 83 15.2 13.7 111
PHILLIPS BENCH 8200 6.6 9.5 69 11.2 10.4 108
SALT RIVER SUMMIT 7760 -M 4.0 * 3.7 6.9 54
SNAKE RIVER STATION 6920 3.3 5.9 56 11.1 8.7 128
SPRING CREEK DIVIDE 9000 4.7 9.8 48 6.1 10.1 60
THUMB DIVIDE 7980 3.8 5.8 66 7.9 7.2 110
TOGWOTEE PASS 9580 10.5 9.2 114 12.0 9.6 125
TWO OCEAN PLATEAU 9240 14.2 10.9 130 13.6 10.9 125
WILLOW CREEK 8380 5.7 10.9 52 11.2 12.4 90
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Basin wide percent of average 76 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 10.8 9.3 116 10.4 8.0 130
BLACK BEAR 8170 12.8 13.5 95 15.4 13.9 111
CANYON 7870 5.0 4.6 109 8.4 6.2 135
FISHER CREEK 9100 16.4 12.9 127 -M 13.4 *
MADISON PLATEAU 7750 7.6 8.8 86 11.7 9.9 118
NORTHEAST ENTRANCE 7350 2.0 3.7 54 6.1 5.2 117
PARKER PEAK 9400 10.1 8.6 117 10.6 6.9 154
SYLVAN LAKE 8420 7.2 8.5 85 11.5 9.2 125
THUMB DIVIDE 7980 3.8 5.8 66 7.9 7.2 110
TWO OCEAN PLATEAU 9240 14.2 10.9 130 13.6 10.9 125
WHISKEY CREEK 6800 4.2 5.7 74 9.6 7.9 122
WHITE MILL 8700 10.8 9.1 119 11.5 10.4 111
WOLVERINE 7650 3.0 4.3 70 6.7 5.8 116
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Basin wide percent of average 102 122
WIND RIVER
BURROUGHS CREEK 8750 6.8 5.3 128 9.6 6.4 150
COLD SPRINGS 9630 1.2 3.9 31 4.0 5.0 80
DEER PARK 9700 2.6 5.6 46 6.0 9.0 67
HOBBS PARK 10100 3.0 6.6 45 5.1 5.5 93
LITTLE WARM 9370 3.4 4.3 79 5.9 5.6 105
SOUTH PASS 9040 2.2 6.8 32 5.2 7.7 68
ST. LAWRENCE ALT 8620 1.5 3.3 45 3.1 4.1 76
TOGWOTEE PASS 9580 10.5 9.2 114 12.0 9.6 125
TOWNSEND CREEK 8700 1.4 3.7 38 4.3 5.3 81
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Basin wide percent of average 67 95
BIGHORN BASIN
BALD MTN. 9380 5.0 7.8 64 6.3 6.8 93
BEAR TRAP MEADOW 8200 2.3 2.1 110 3.8 4.0 95
BLACKWATER 9780 10.6 10.0 106 10.3 9.2 112
BONE SPRINGS DIV 9350 4.7 6.5 72 5.6 6.0 93
EVENING STAR 9200 11.5 11.2 103 13.5 10.6 127
GRAVE SPRINGS 8550 2.6 3.1 84 4.3 4.2 102
KIRWIN 9550 6.0 5.1 118 7.3 5.0 146
MARQUETTE 8760 .4 4.3 9 4.8 4.7 102
MIDDLE POWDER 7760 2.7 4.6 59 3.8 5.8 66
OWL CREEK 8975 2.1 2.3 91 3.9 2.5 156
POWDER RIVER PASS 9480 3.4 4.3 79 5.4 5.0 108
SHELL CREEK 9580 6.6 6.1 108 7.2 5.6 129
SYLVAN LAKE 8420 7.2 8.5 85 11.5 9.2 125
SYLVAN ROAD 7120 3.3 5.0 66 10.9 8.6 127
TIMBER CREEK 7950 .7 2.6 27 4.6 3.4 135
YOUNTS PEAK 8350 6.4 6.3 102 9.3 6.6 141
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Basin wide percent of average 84 116
SHOSHONE RIVER
BLACKWATER 9780 10.6 10.0 106 10.3 9.2 112
EVENING STAR 9200 11.5 11.2 103 13.5 10.6 127
KIRWIN 9550 6.0 5.1 118 7.3 5.0 146
MARQUETTE 8760 .4 4.3 9 4.8 4.7 102
SYLVAN LAKE 8420 7.2 8.5 85 11.5 9.2 125
SYLVAN ROAD 7120 3.3 5.0 66 10.9 8.6 127
YOUNTS PEAK 8350 6.4 6.3 102 9.3 6.6 141
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Basin wide percent of average 90 125
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.3 2.1 110 3.8 4.0 95
BIG GOOSE 7990 2.8 3.4 82 5.8 3.9 149
BONE SPRINGS DIV 9350 4.7 6.5 72 5.6 6.0 93
BURGESS JUNCTION 7880 2.9 4.4 66 5.4 5.1 106
CLOUD PEAK RESERVOIR 9860 5.0 4.7 106 7.0 5.6 125
DOME LAKE 8880 3.5 5.0 70 6.9 5.9 117
GRAVE SPRINGS 8550 2.6 3.1 84 4.3 4.2 102
HANSEN SAWMILL 8360 2.7 2.6 104 4.9 3.7 132
MIDDLE POWDER 7760 2.7 4.6 59 3.8 5.8 66
POWDER RIVER PASS 9480 3.4 4.3 79 5.4 5.0 108
SUCKER CREEK 8880 3.5 4.1 85 5.6 5.6 100
TIE CREEK 6870 .5 1.5 33 4.3 4.4 98
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Basin wide percent of average 79 106
BELLE FOURCHE
BLIND PARK 6890 1.2 2.5 48 3.2 5.3 60
COLE CANYON 5910 .6 2.7 22 2.4 3.4 71
NORTH RAPID CREEK 6130 1.9 2.5 76 2.4 4.5 53
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Basin wide percent of average 48 61
UPPER N. PLATTE RIVER
COLUMBINE 9160 4.3 7.3 59 8.0 8.9 90
DIVIDE PEAK 8880 6.7 7.0 96 7.9 8.1 98
ELK RIVER 8700 4.7 4.9 96 7.7 7.0 110
JOE WRIGHT 10120 8.0 7.9 101 10.1 9.8 103
NORTH FRENCH CREEK 10130 9.3 10.5 89 10.4 9.7 107
OLD BATTLE 10000 9.1 11.9 76 11.8 12.6 94
SAGE CREEK BASIN 7850 4.1 4.1 100 6.0 4.7 128
SOUTH BRUSH CREEK 8440 4.1 4.0 102 7.5 6.4 117
TOWER 10500 9.4 16.6 57 12.7 14.2 89
WEBBER SPRINGS 9250 6.7 9.1 74 9.5 10.3 92
WILLOW CREEK PASS 9540 6.0 4.6 130 7.1 5.4 131
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Basin wide percent of average 82 102
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 6.7 8.3 81 8.0 8.1 99
CASPER MTN. 7900 2.0 5.8 34 5.7 6.3 90
DEADMAN HILL 10220 6.5 6.3 103 6.6 6.5 102
DEER PARK 9700 2.6 5.6 46 6.0 9.0 67
LAPRELE CREEK 8375 .9 4.3 21 3.8 5.1 75
RENO HILL 8400 3.5 5.5 64 5.5 6.1 90
ROACH 9700 6.3 5.7 111 8.2 6.8 121
SAND LAKE 10050 9.3 12.1 77 10.0 9.3 108
SOUTH PASS 9040 2.2 6.8 32 5.2 7.7 68
WINDY PEAK 7900 1.9 3.0 63 3.7 4.6 80
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Basin wide percent of average 66 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.8 2.7 104 5.5 5.7 96
DIVIDE PEAK 8880 6.7 7.0 96 7.9 8.1 98
OLD BATTLE 10000 9.1 11.9 76 11.8 12.6 94
SANDSTONE RS 8150 3.7 3.6 103 6.6 7.1 93
WHISKEY PARK 8950 6.4 8.3 77 10.1 10.4 97
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Basin wide percent of average 86 95
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.7 5.5 49 3.6 5.4 67
BLIND BULL SUM 8650 5.6 10.1 55 6.1 8.8 69
EAST RIM DIVIDE 7930 -M 4.6 * 3.9 4.6 85
ELKHART PARK G.S. 9400 2.8 4.9 57 4.5 5.5 82
GROS VENTRE SUMMIT 8750 5.1 5.4 94 6.7 5.3 126
GUNSIGHT PASS 9820 3.3 -M * 6.3 -M *
KENDALL R.S. 7740 2.1 4.9 43 4.9 5.4 91
LOOMIS PARK 8240 3.3 6.2 53 5.1 6.6 77
NEW FORK LAKE 8340 2.1 4.1 51 3.7 4.8 77
SNIDER BASIN 8060 1.6 5.3 30 3.5 6.1 57
SPRING CREEK DIVIDE 9000 4.7 9.8 48 6.1 10.1 60
TRIPLE PEAK 8500 5.1 9.1 56 8.1 8.8 92
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Basin wide percent of average 54 79
LOWER GREEN RIVER
HAMS FORK 7840 .9 3.9 23 2.8 4.6 61
HEWINTA 9519 1.0 3.0 33 5.9 6.0 98
HICKERSON PARK 9145 1.2 2.1 57 3.8 3.7 103
HOLE-IN-ROCK 9150 .8 2.0 40 4.2 3.4 124
INDIAN CREEK 9425 4.0 9.6 42 4.9 9.5 52
KELLEY R.S. 8180 2.0 6.0 33 4.7 7.8 60
STEEL CREEK PARK 10200 2.0 5.3 38 6.5 6.3 103
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Basin wide percent of average 37 79
UPPER BEAR RIVER
BUG LAKE 7950 -M 6.0 * 3.4 7.5 45
HAYDEN FORK 9212 2.8 4.5 62 6.0 8.0 75
KELLEY R.S. 8180 2.0 6.0 33 4.7 7.8 60
LILY LAKE 9156 1.6 4.1 39 5.7 7.2 79
MONTE CRISTO 8960 4.1 7.8 53 6.4 9.7 66
SALT RIVER SUMMIT 7760 -M 4.0 * 3.7 6.9 54
TRIAL LAKE 9992 4.0 7.9 51 5.8 8.9 65
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Basin wide percent of average 48 64
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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.