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 FRIDAY: DECEMBER 31 , 2004
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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 6.3 8.1 78 7.8 10.3 76
COTTONWOOD CREEK 7600 6.2 9.5 65 8.8 13.3 66
GRANITE CREEK 6770 5.3 7.5 71 8.0 9.4 85
GRASSY LAKE 7265 11.0 14.5 76 12.6 17.1 74
GROS VENTRE SUMMIT 8750 5.6 6.8 82 5.4 6.3 86
LEWIS LAKE DIVIDE 7850 11.3 14.6 77 12.4 17.3 72
PHILLIPS BENCH 8200 10.2 12.4 82 10.8 13.3 81
SALT RIVER SUMMIT 7600 4.9 5.3 92 7.6 8.9 85
SNAKE RIVER STATION 6920 5.5 7.8 71 7.7 10.9 71
SPRING CREEK DIVIDE 9000 10.7 12.3 87 11.0 12.8 86
THUMB DIVIDE 7980 6.7 7.5 89 6.8 9.0 76
TOGWOTEE PASS 9580 8.2 11.5 71 8.4 11.8 71
TWO OCEAN PLATEAU 9240 12.0 13.3 90 9.9 13.3 74
WILLOW CREEK 8450 10.7 14.1 76 13.2 15.3 86
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Basin wide percent of average 79 77
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.5 11.4 66 6.5 9.9 66
BLACK BEAR 8170 16.2 17.0 95 16.1 17.4 93
CANYON 8090 3.6 6.0 60 5.0 7.7 65
FISHER CREEK 9100 11.6 16.1 72 11.0 16.9 65
MADISON PLATEAU 7750 -M 11.0 * -M 12.2 *
NORTHEAST ENTRANCE 7350 2.1 4.9 43 3.4 6.3 54
PARKER PEAK 9400 7.9 10.5 75 6.4 8.1 79
SYLVAN LAKE 8420 7.3 10.4 70 8.7 10.9 80
THUMB DIVIDE 7980 6.7 7.5 89 6.8 9.0 76
TWO OCEAN PLATEAU 9240 12.0 13.3 90 9.9 13.3 74
WHISKEY CREEK 6800 -M 7.4 * -M 9.8 *
WHITE MILL 8700 7.3 11.0 66 7.2 12.6 57
WOLVERINE 7650 3.7 5.7 65 3.9 6.9 57
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Basin wide percent of average 75 71
WIND RIVER
BURROUGHS CREEK 8750 4.5 6.6 68 4.9 7.9 62
COLD SPRINGS 9630 4.0 4.6 87 4.4 5.7 77
DEER PARK 9700 12.5 6.6 189 14.1 10.8 131
HOBBS PARK 10100 7.5 7.5 100 6.8 6.3 108
LITTLE WARM 9370 3.7 5.2 71 4.2 6.6 64
SOUTH PASS 9040 10.5 8.1 130 11.3 9.1 124
ST. LAWRENCE ALT 8620 3.7 3.8 97 4.6 4.6 100
TOGWOTEE PASS 9580 8.2 11.5 71 8.4 11.8 71
TOWNSEND CREEK 8700 5.0 4.4 114 7.8 6.0 130
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Basin wide percent of average 102 97
BIGHORN BASIN
BALD MTN. 9380 8.6 9.6 90 8.1 8.4 96
BEAR TRAP MEADOW 8200 1.8 2.6 69 4.1 4.5 91
BLACKWATER 9780 7.8 11.9 66 7.3 10.7 68
BONE SPRINGS DIV 9350 7.4 7.7 96 7.2 7.2 100
EVENING STAR 9200 9.1 13.5 67 10.2 12.8 80
GRAVE SPRINGS 8550 2.8 3.9 72 4.5 4.9 92
KIRWIN 9550 3.1 5.9 53 3.6 5.8 62
MARQUETTE 8760 1.9 5.0 38 3.6 5.3 68
MIDDLE POWDER 7760 3.5 5.4 65 4.7 6.7 70
OWL CREEK 8975 1.7 2.7 63 2.1 2.9 72
POWDER RIVER PASS 9480 6.1 5.2 117 6.8 5.9 115
SHELL CREEK 9580 7.1 7.2 99 6.3 6.6 95
SYLVAN LAKE 8420 7.3 10.4 70 8.7 10.9 80
SYLVAN ROAD 7120 4.0 6.1 66 6.3 10.0 63
TIMBER CREEK 7950 1.0 3.0 33 1.8 3.7 49
YOUNTS PEAK 8350 4.9 7.8 63 5.2 8.1 64
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Basin wide percent of average 72 79
SHOSHONE RIVER
BLACKWATER 9780 7.8 11.9 66 7.3 10.7 68
EVENING STAR 9200 9.1 13.5 67 10.2 12.8 80
KIRWIN 9550 3.1 5.9 53 3.6 5.8 62
MARQUETTE 8760 1.9 5.0 38 3.6 5.3 68
SYLVAN LAKE 8420 7.3 10.4 70 8.7 10.9 80
SYLVAN ROAD 7120 4.0 6.1 66 6.3 10.0 63
YOUNTS PEAK 8350 4.9 7.8 63 5.2 8.1 64
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Basin wide percent of average 63 71
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.8 2.6 69 4.1 4.5 91
BIG GOOSE 7990 -M 4.3 * -M 4.5 *
BONE SPRINGS DIV 9350 7.4 7.7 96 7.2 7.2 100
BURGESS JUNCTION 7880 -M 5.4 * -M 6.0 *
CLOUD PEAK RESERVOIR 9860 6.5 5.6 116 5.4 6.4 84
DOME LAKE 8880 4.9 6.0 82 5.8 6.8 85
GRAVE SPRINGS 8550 2.8 3.9 72 4.5 4.9 92
HANSEN SAWMILL 8360 2.3 3.3 70 3.4 4.3 79
MIDDLE POWDER 7760 3.5 5.4 65 4.7 6.7 70
POWDER RIVER PASS 9480 6.1 5.2 117 6.8 5.9 115
SUCKER CREEK 8880 5.1 5.1 100 6.2 6.6 94
TIE CREEK 6870 .7 2.4 29 4.1 5.1 80
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Basin wide percent of average 87 89
BELLE FOURCHE
BLIND PARK 6890 2.4 3.4 71 4.4 6.1 72
COLE CANYON 5910 .8 3.0 27 3.9 -M *
NORTH RAPID CREEK 6130 1.8 3.2 56 3.3 5.3 62
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Basin wide percent of average 52 68
UPPER N. PLATTE RIVER
COLUMBINE 9160 9.3 9.8 95 11.0 11.3 97
DIVIDE PEAK 8860 9.5 9.1 104 12.1 9.9 122
ELK RIVER 8700 6.5 7.1 92 9.4 8.8 107
JOE WRIGHT 10120 10.0 9.6 104 10.0 11.8 85
NORTH FRENCH CREEK 10130 10.7 13.2 81 10.5 11.9 88
OLD BATTLE 9920 16.0 14.4 111 18.2 15.8 115
SAGE CREEK BASIN 7850 6.8 5.2 131 9.6 5.7 168
SOUTH BRUSH CREEK 8440 3.4 5.0 68 5.4 7.7 70
TOWER 10500 18.1 20.3 89 17.9 17.7 101
WEBBER SPRINGS 9250 10.9 11.3 96 13.2 12.8 103
WILLOW CREEK PASS 9540 6.8 5.5 124 6.6 6.3 105
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Basin wide percent of average 98 104
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 7.7 10.6 73 7.9 10.0 79
CASPER MTN. 7850 5.4 6.8 79 6.5 7.1 92
DEADMAN HILL 10220 8.5 7.5 113 6.2 7.8 79
DEER PARK 9700 12.5 6.6 189 14.1 10.8 131
LAPRELE CREEK 8375 2.9 5.2 56 5.4 6.1 89
RENO HILL 8500 4.0 6.5 62 4.9 7.1 69
ROACH 9700 5.7 7.2 79 7.9 8.4 94
SAND LAKE 10050 10.3 14.7 70 8.9 11.5 77
SOUTH PASS 9040 10.5 8.1 130 11.3 9.1 124
WINDY PEAK 7900 2.4 3.5 69 4.3 5.4 80
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Basin wide percent of average 91 93
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.1 4.0 102 7.5 7.0 107
DIVIDE PEAK 8860 9.5 9.1 104 12.1 9.9 122
OLD BATTLE 9920 16.0 14.4 111 18.2 15.8 115
SANDSTONE RS 8150 4.1 5.2 79 9.5 8.8 108
WHISKEY PARK 8950 10.5 10.9 96 13.0 13.0 100
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Basin wide percent of average 101 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.7 6.8 128 8.6 6.5 132
BLIND BULL SUM 8900 -M 13.0 * 8.2 10.9 75
EAST RIM DIVIDE 7930 3.4 5.8 59 4.7 5.7 82
ELKHART PARK G.S. 9400 6.0 6.2 97 7.1 6.6 108
GROS VENTRE SUMMIT 8750 5.6 6.8 82 5.4 6.3 86
KENDALL R.S. 7740 5.6 6.6 85 6.5 6.8 96
LOOMIS PARK 8240 6.1 7.9 77 7.1 8.2 87
NEW FORK LAKE 8340 4.9 5.3 92 4.7 5.8 81
SNIDER BASIN 8060 6.2 6.8 91 7.1 7.8 91
SPRING CREEK DIVIDE 9000 10.7 12.3 87 11.0 12.8 86
TRIPLE PEAK 8500 8.1 11.7 69 9.6 11.0 87
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Basin wide percent of average 86 90
LOWER GREEN RIVER
HAMS FORK 7840 5.4 5.4 100 6.5 5.7 114
HEWINTA 9500 3.7 4.0 92 6.0 6.9 87
HICKERSON PARK 9100 4.4 2.9 152 6.8 4.2 162
HOLE-IN-ROCK 9150 4.0 2.7 148 6.1 3.9 156
INDIAN CREEK 9425 12.5 12.3 102 11.6 12.0 97
KELLEY R.S. 8180 8.0 7.5 107 9.6 10.0 96
STEEL CREEK PARK 10100 7.3 6.6 111 8.1 7.5 108
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Basin wide percent of average 109 109
UPPER BEAR RIVER
BUG LAKE 7950 7.9 8.2 96 10.6 9.1 116
HAYDEN FORK 9100 7.8 6.2 126 12.1 9.9 122
KELLEY R.S. 8180 8.0 7.5 107 9.6 10.0 96
LILY LAKE 9050 5.7 5.4 106 8.8 8.5 104
MONTE CRISTO 8960 12.6 10.8 117 13.6 11.9 114
SALT RIVER SUMMIT 7600 4.9 5.3 92 7.6 8.9 85
TRIAL LAKE 9960 12.9 10.3 125 15.3 11.1 138
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Basin wide percent of average 111 112
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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.