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 19 , 2005
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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 5.9 6.4 92 9.6 8.6 112
COTTONWOOD CREEK 7600 6.7 7.6 88 10.1 11.2 90
GRANITE CREEK 6770 6.2 5.8 107 8.5 7.8 109
GRASSY LAKE 7265 10.6 11.7 91 15.1 14.1 107
GROS VENTRE SUMMIT 8750 4.7 5.7 82 5.9 5.5 107
LEWIS LAKE DIVIDE 7850 10.1 11.8 86 14.0 14.3 98
PHILLIPS BENCH 8200 9.1 10.1 90 11.2 10.9 103
SALT RIVER SUMMIT 7600 4.4 4.3 102 6.3 7.3 86
SNAKE RIVER STATION 6920 5.5 6.3 87 10.3 9.1 113
SPRING CREEK DIVIDE 9000 8.8 10.3 85 9.4 10.6 89
THUMB DIVIDE 7980 5.6 6.1 92 7.9 7.5 105
TOGWOTEE PASS 9580 10.1 9.7 104 10.8 10.0 108
TWO OCEAN PLATEAU 9240 14.6 11.4 128 12.5 11.3 111
WILLOW CREEK 8450 8.7 11.5 76 13.4 12.9 104
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Basin wide percent of average 94 103
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 9.6 9.7 99 8.1 8.3 98
BLACK BEAR 8170 15.4 14.2 108 16.7 14.6 114
CANYON 8090 5.5 4.9 112 7.7 6.5 118
FISHER CREEK 9100 15.5 13.5 115 15.4 14.0 110
MADISON PLATEAU 7750 8.4 9.2 91 11.6 10.2 114
NORTHEAST ENTRANCE 7350 3.3 4.0 82 5.5 5.4 102
PARKER PEAK 9400 7.7 9.0 86 7.8 7.1 110
SYLVAN LAKE 8420 6.5 8.8 74 10.0 9.4 106
THUMB DIVIDE 7980 5.6 6.1 92 7.9 7.5 105
TWO OCEAN PLATEAU 9240 14.6 11.4 128 12.5 11.3 111
WHISKEY CREEK 6800 4.1 6.0 68 9.2 8.2 112
WHITE MILL 8700 9.0 9.4 96 8.9 10.7 83
WOLVERINE 7650 4.3 4.6 93 4.2 6.0 70
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Basin wide percent of average 99 105
WIND RIVER
BURROUGHS CREEK 8750 7.6 5.6 136 7.3 6.7 109
COLD SPRINGS 9630 1.8 4.1 44 4.2 5.1 82
DEER PARK 9700 5.4 5.9 92 7.1 9.3 76
HOBBS PARK 10100 3.4 6.8 50 4.8 5.6 86
LITTLE WARM 9370 3.8 4.5 84 5.8 5.8 100
SOUTH PASS 9040 5.0 7.1 70 6.6 7.9 84
ST. LAWRENCE ALT 8620 .7 3.4 21 2.9 4.1 71
TOGWOTEE PASS 9580 10.1 9.7 104 10.8 10.0 108
TOWNSEND CREEK 8700 2.0 3.9 51 5.1 5.4 94
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Basin wide percent of average 78 91
BIGHORN BASIN
BALD MTN. 9380 7.1 8.2 87 5.4 7.2 75
BEAR TRAP MEADOW 8200 2.2 2.2 100 4.4 4.0 110
BLACKWATER 9780 9.2 10.4 88 8.1 9.3 87
BONE SPRINGS DIV 9350 6.8 6.7 101 6.5 6.3 103
EVENING STAR 9200 8.8 11.7 75 11.8 11.0 107
GRAVE SPRINGS 8550 3.4 3.3 103 5.5 4.4 125
KIRWIN 9550 5.4 5.3 102 5.7 5.1 112
MARQUETTE 8760 1.1 4.5 24 3.9 4.8 81
MIDDLE POWDER 7760 5.3 4.8 110 5.8 6.0 97
OWL CREEK 8975 .9 2.4 38 3.0 2.6 115
POWDER RIVER PASS 9480 4.0 4.5 89 5.5 5.2 106
SHELL CREEK 9580 5.8 6.3 92 5.8 5.8 100
SYLVAN LAKE 8420 6.5 8.8 74 10.0 9.4 106
SYLVAN ROAD 7120 3.8 5.2 73 8.1 8.6 94
TIMBER CREEK 7950 .8 2.7 30 3.3 3.4 97
YOUNTS PEAK 8350 -M 6.6 * 8.7 6.9 126
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Basin wide percent of average 82 101
SHOSHONE RIVER
BLACKWATER 9780 9.2 10.4 88 8.1 9.3 87
EVENING STAR 9200 8.8 11.7 75 11.8 11.0 107
KIRWIN 9550 5.4 5.3 102 5.7 5.1 112
MARQUETTE 8760 1.1 4.5 24 3.9 4.8 81
SYLVAN LAKE 8420 6.5 8.8 74 10.0 9.4 106
SYLVAN ROAD 7120 3.8 5.2 73 8.1 8.6 94
YOUNTS PEAK 8350 -M 6.6 * 8.7 6.9 126
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Basin wide percent of average 76 102
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.2 2.2 100 4.4 4.0 110
BIG GOOSE 7990 2.4 3.6 67 4.5 3.9 115
BONE SPRINGS DIV 9350 6.8 6.7 101 6.5 6.3 103
BURGESS JUNCTION 7880 4.7 4.7 100 6.2 5.3 117
CLOUD PEAK RESERVOIR 9860 5.1 4.9 104 5.3 5.8 91
DOME LAKE 8880 4.9 5.3 92 6.0 6.1 98
GRAVE SPRINGS 8550 3.4 3.3 103 5.5 4.4 125
HANSEN SAWMILL 8360 -M 2.8 * -M 3.8 *
MIDDLE POWDER 7760 5.3 4.8 110 5.8 6.0 97
POWDER RIVER PASS 9480 4.0 4.5 89 5.5 5.2 106
SUCKER CREEK 8880 4.6 4.4 105 7.1 5.8 122
TIE CREEK 6870 2.6 1.7 153 6.0 4.5 133
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Basin wide percent of average 100 110
BELLE FOURCHE
BLIND PARK 6890 2.8 2.7 104 4.8 5.5 87
COLE CANYON 5910 2.2 2.5 88 4.4 -M *
NORTH RAPID CREEK 6130 2.8 2.6 108 3.8 4.7 81
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Basin wide percent of average 100 84
UPPER N. PLATTE RIVER
COLUMBINE 9160 12.2 7.8 156 15.5 9.4 165
DIVIDE PEAK 8860 6.9 7.4 93 10.4 8.4 124
ELK RIVER 8700 6.2 5.4 115 9.2 7.3 126
JOE WRIGHT 10120 11.0 8.2 134 13.4 10.1 133
NORTH FRENCH CREEK 10130 12.6 11.0 115 13.6 10.1 135
OLD BATTLE 9920 25.9 12.5 207 17.7 13.2 134
SAGE CREEK BASIN 7850 3.9 4.3 91 6.5 4.9 133
SOUTH BRUSH CREEK 8440 5.2 4.2 124 8.7 6.7 130
TOWER 10500 20.3 17.3 117 22.5 14.8 152
WEBBER SPRINGS 9250 9.8 9.5 103 14.8 10.8 137
WILLOW CREEK PASS 9540 6.5 4.8 135 7.4 5.6 132
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Basin wide percent of average 130 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 9.6 8.7 110 7.4 8.5 87
CASPER MTN. 7850 4.3 6.0 72 7.2 6.4 112
DEADMAN HILL 10220 7.5 6.5 115 8.9 6.8 131
DEER PARK 9700 5.4 5.9 92 7.1 9.3 76
LAPRELE CREEK 8375 2.3 4.5 51 3.8 5.4 70
RENO HILL 8500 5.3 5.7 93 6.8 6.3 108
ROACH 9700 6.7 6.0 112 9.6 7.1 135
SAND LAKE 10050 13.6 12.6 108 13.9 9.8 142
SOUTH PASS 9040 5.0 7.1 70 6.6 7.9 84
WINDY PEAK 7900 1.9 3.0 63 3.9 4.7 83
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Basin wide percent of average 93 104
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 3.0 170 8.0 6.0 133
DIVIDE PEAK 8860 6.9 7.4 93 10.4 8.4 124
OLD BATTLE 9920 25.9 12.5 207 17.7 13.2 134
SANDSTONE RS 8150 5.2 3.9 133 10.1 7.5 135
WHISKEY PARK 8950 11.3 8.9 127 14.6 10.9 134
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Basin wide percent of average 152 132
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.6 5.8 62 4.5 5.6 80
BLIND BULL SUM 8900 7.8 10.7 73 7.3 9.1 80
EAST RIM DIVIDE 7930 3.6 4.8 75 4.3 4.8 90
ELKHART PARK G.S. 9400 4.7 5.2 90 5.5 5.7 96
GROS VENTRE SUMMIT 8750 4.7 5.7 82 5.9 5.5 107
KENDALL R.S. 7740 4.4 5.2 85 5.8 5.7 102
LOOMIS PARK 8240 5.9 6.5 91 6.8 6.9 99
NEW FORK LAKE 8340 3.6 4.3 84 3.9 5.0 78
SNIDER BASIN 8060 5.5 5.6 98 5.8 6.5 89
SPRING CREEK DIVIDE 9000 8.8 10.3 85 9.4 10.6 89
TRIPLE PEAK 8500 8.7 9.6 91 10.5 9.2 114
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Basin wide percent of average 83 93
LOWER GREEN RIVER
HAMS FORK 7840 3.7 4.2 88 4.4 4.8 92
HEWINTA 9500 3.9 3.2 122 6.7 6.1 110
HICKERSON PARK 9100 1.1 2.3 48 3.3 3.8 87
HOLE-IN-ROCK 9150 2.9 2.2 132 3.9 3.5 111
INDIAN CREEK 9425 8.9 10.1 88 8.6 10.0 86
KELLEY R.S. 8180 5.1 6.2 82 6.8 8.3 82
STEEL CREEK PARK 10100 5.5 5.6 98 7.2 6.6 109
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Basin wide percent of average 92 95
UPPER BEAR RIVER
BUG LAKE 7950 5.8 6.4 91 7.4 7.7 96
HAYDEN FORK 9100 -M 4.8 * -M 8.4 *
KELLEY R.S. 8180 5.1 6.2 82 6.8 8.3 82
LILY LAKE 9050 4.9 4.4 111 6.7 7.4 91
MONTE CRISTO 8960 8.4 8.4 100 10.0 10.1 99
SALT RIVER SUMMIT 7600 4.4 4.3 102 6.3 7.3 86
TRIAL LAKE 9960 9.4 8.4 112 10.4 9.3 112
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Basin wide percent of average 100 95
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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 1971-2000.
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.