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 TUESDAY: DECEMBER 18 , 2001
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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 5.3 6.3 84 9.8 8.3 118
COTTONWOOD CREEK 7600 7.2 7.4 97 10.0 10.8 93
GRANITE CREEK 6770 6.4 5.7 112 10.2 7.5 136
GRASSY LAKE 7265 10.3 11.5 90 14.9 13.6 110
GROS VENTRE SUMMIT 8775 6.3 5.6 112 5.6 5.4 104
LEWIS LAKE DIVIDE 7860 12.1 11.6 104 14.6 13.8 106
PHILLIPS BENCH 8200 10.6 9.9 107 12.4 10.5 118
SALT RIVER SUMMIT 7600 5.0 4.2 119 7.3 7.0 104
SNAKE RIVER STATION 6920 -M 6.2 * -M 8.8 *
SPRING CREEK DIVIDE 9000 10.7 10.1 106 11.0 10.3 107
THUMB DIVIDE 7980 5.7 6.0 95 8.1 7.3 111
TOGWOTEE PASS 9580 9.4 9.6 98 9.4 9.7 97
TWO OCEAN PLATEAU 9360 11.8 11.2 105 10.3 10.9 94
WILLOW CREEK 8450 9.0 11.3 80 14.7 12.5 118
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Basin wide percent of average 99 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 8.5 9.5 89 7.8 8.0 98
BLACK BEAR 8170 17.0 14.0 121 18.3 14.4 127
CANYON 8090 5.7 4.8 119 6.9 6.5 106
FISHER CREEK 9100 12.5 13.3 94 12.2 12.3 99
MADISON PLATEAU 7750 9.4 9.1 103 13.2 9.7 136
NORTHEAST ENTRANCE 7350 2.5 3.9 64 4.5 5.4 83
PARKER PEAK 9400 7.6 8.9 85 6.7 7.3 92
SYLVAN LAKE 8420 7.6 8.7 87 9.8 9.8 100
THUMB DIVIDE 7980 5.7 6.0 95 8.1 7.3 111
TWO OCEAN PLATEAU 9360 11.8 11.2 105 10.3 10.9 94
WHISKEY CREEK 6800 6.3 5.9 107 10.3 8.0 129
WHITE MILL 8700 8.8 9.3 95 8.5 9.9 86
WOLVERINE 7650 3.1 4.5 69 4.9 5.6 88
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Basin wide percent of average 98 106
WIND RIVER
BURROUGHS CREEK 8750 5.9 5.5 107 6.5 6.7 97
COLD SPRINGS 9630 1.7 4.0 42 -M 4.8 *
DEER PARK 9700 7.1 5.8 122 8.8 -M *
HOBBS PARK 10100 4.4 6.8 65 3.8 5.7 67
LITTLE WARM 9370 4.0 4.5 89 5.0 5.6 89
SOUTH PASS 9040 5.9 7.0 84 6.9 7.0 99
ST. LAWRENCE ALT 8620 1.1 3.4 32 2.1 4.0 52
TOGWOTEE PASS 9580 9.4 9.6 98 9.4 9.7 97
TOWNSEND CREEK 8700 1.9 3.8 50 2.3 5.3 43
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Basin wide percent of average 82 82
BIGHORN BASIN
BALD MTN. 9380 7.2 8.1 89 6.5 6.9 94
BEAR TRAP MEADOW 8200 2.2 2.2 100 4.3 3.9 110
BLACKWATER 9780 8.0 10.3 78 7.4 8.7 85
BONE SPRINGS DIV 9350 6.2 6.6 94 6.0 6.1 98
EVENING STAR 9200 9.5 11.6 82 11.0 10.9 101
GRAVE SPRINGS 8550 2.1 3.3 64 4.3 4.4 98
KIRWIN 9550 4.0 5.2 77 4.3 5.0 86
MARQUETTE 8760 1.8 4.4 41 2.2 4.4 50
MIDDLE POWDER 7760 2.2 4.8 46 4.5 5.6 80
OWL CREEK 8975 1.4 2.4 58 1.8 2.6 69
POWDER RIVER PASS 9480 4.7 4.4 107 6.1 5.0 122
SHELL CREEK 9580 6.9 6.2 111 6.5 5.5 118
SYLVAN LAKE 8420 7.6 8.7 87 9.8 9.8 100
SYLVAN ROAD 7120 3.4 5.1 67 7.6 9.2 83
TIMBER CREEK 7950 .6 2.7 22 1.8 3.9 46
YOUNTS PEAK 8350 5.6 6.5 86 6.5 6.6 98
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Basin wide percent of average 79 92
SHOSHONE RIVER
BLACKWATER 9780 8.0 10.3 78 7.4 8.7 85
EVENING STAR 9200 9.5 11.6 82 11.0 10.9 101
KIRWIN 9550 4.0 5.2 77 4.3 5.0 86
MARQUETTE 8760 1.8 4.4 41 2.2 4.4 50
SYLVAN LAKE 8420 7.6 8.7 87 9.8 9.8 100
SYLVAN ROAD 7120 3.4 5.1 67 7.6 9.2 83
YOUNTS PEAK 8350 5.6 6.5 86 6.5 6.6 98
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Basin wide percent of average 77 89
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.2 2.2 100 4.3 3.9 110
BIG GOOSE 7990 3.1 -M * 5.1 4.6 111
BONE SPRINGS DIV 9350 6.2 6.6 94 6.0 6.1 98
BURGESS JUNCTION 7880 3.0 4.6 65 4.5 5.0 90
CLOUD PEAK RESERVOIR 9860 4.9 4.8 102 5.9 6.1 97
DOME LAKE 8880 4.6 5.2 88 6.5 5.8 112
GRAVE SPRINGS 8550 2.1 3.3 64 4.3 4.4 98
HANSEN SAWMILL 8360 1.8 2.7 67 3.7 3.7 100
MIDDLE POWDER 7760 2.2 4.8 46 4.5 5.6 80
POWDER RIVER PASS 9480 4.7 4.4 107 6.1 5.0 122
SUCKER CREEK 8880 3.9 4.3 91 5.9 5.6 105
TIE CREEK 6870 1.1 1.7 65 4.6 4.1 112
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Basin wide percent of average 82 103
BELLE FOURCHE
BLIND PARK 6890 1.7 2.7 63 3.9 4.5 87
COLE CANYON 5910 .7 -M * 1.9 -M *
NORTH RAPID CREEK 6130 2.4 -M * 3.3 4.0 82
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Basin wide percent of average 63* 85
UPPER N. PLATTE RIVER
COLUMBINE 9400 5.9 7.6 78 7.7 9.0 86
DIVIDE PEAK 8800 5.8 7.3 79 6.9 8.2 84
ELK RIVER 8700 4.4 5.2 85 6.2 7.1 87
JOE WRIGHT 10120 7.2 8.1 89 7.6 9.9 77
NORTH FRENCH CREEK 10100 5.2 10.8 48 5.7 9.8 58
OLD BATTLE 10000 -M 12.3 * -M 12.8 *
SAGE CREEK BASIN 7850 -M -M * -M -M *
SOUTH BRUSH CREEK 8400 2.8 4.1 68 3.9 6.5 60
TOWER 10500 11.5 17.1 67 12.4 14.4 86
WEBBER SPRINGS 9200 7.4 9.4 79 8.9 10.5 85
WILLOW CREEK PASS 9540 3.2 4.7 68 4.4 5.5 80
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Basin wide percent of average 72 79
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.6 8.6 53 5.5 8.2 67
CASPER MTN. 7900 3.8 5.9 64 5.7 6.3 90
DEADMAN HILL 10220 3.2 6.4 50 4.4 6.6 67
DEER PARK 9700 7.1 5.8 122 8.8 -M *
LAPRELE CREEK 8320 1.9 4.4 43 4.7 5.2 90
RENO HILL 8400 3.4 5.6 61 5.0 6.2 81
ROACH 9700 3.0 5.9 51 4.6 7.0 66
SAND LAKE 10080 7.3 12.4 59 7.7 9.5 81
SOUTH PASS 9040 5.9 7.0 84 6.9 7.0 99
WINDY PEAK 7840 1.3 3.0 43 4.2 4.7 89
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Basin wide percent of average 64 80
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.2 2.9 145 -M 5.8 *
DIVIDE PEAK 8800 5.8 7.3 79 6.9 8.2 84
OLD BATTLE 10000 -M 12.3 * -M 12.8 *
SANDSTONE RS 8150 3.5 3.8 92 7.2 7.3 99
WHISKEY PARK 8950 7.7 8.7 89 9.8 10.6 92
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Basin wide percent of average 93 92
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.1 5.7 125 6.4 5.5 116
BLIND BULL SUM 8650 10.7 10.5 102 10.0 8.8 114
EAST RIM DIVIDE 7930 4.0 4.7 85 5.8 4.7 123
ELKHART PARK G.S. 9400 5.7 5.1 112 6.4 5.6 114
GROS VENTRE SUMMIT 8775 6.3 5.6 112 5.6 5.4 104
KENDALL R.S. 7740 4.5 5.1 88 6.8 5.5 124
LOOMIS PARK 8240 7.2 6.4 112 7.9 6.7 118
NEW FORK LAKE 8340 4.2 4.2 100 5.0 4.9 102
SNIDER BASIN 8250 -M 5.5 * 6.2 6.3 98
SPRING CREEK DIVIDE 9000 10.7 10.1 106 11.0 10.3 107
TRIPLE PEAK 8500 9.3 9.4 99 11.1 8.9 125
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Basin wide percent of average 104 113
LOWER GREEN RIVER
HAMS FORK 7840 5.3 4.1 129 4.8 4.7 102
HEWINTA 9500 3.3 3.1 106 6.6 6.0 110
HICKERSON PARK 9150 2.0 2.2 91 4.0 3.7 108
HOLE-IN-ROCK 9150 2.5 2.1 119 3.9 3.4 115
INDIAN CREEK 9425 10.9 9.9 110 9.7 9.7 100
KELLEY R.S. 8180 6.8 6.1 111 8.7 8.0 109
STEEL CREEK PARK 10100 5.5 5.5 100 5.9 6.4 92
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Basin wide percent of average 110 104
UPPER BEAR RIVER
BUG LAKE 7950 6.8 6.2 110 9.1 7.5 121
HAYDEN FORK 9400 6.0 4.7 128 9.9 8.1 122
KELLEY R.S. 8180 6.8 6.1 111 8.7 8.0 109
LILY LAKE 9050 4.8 4.3 112 7.8 7.2 108
MONTE CRISTO 8960 9.2 8.2 112 11.2 9.7 115
SALT RIVER SUMMIT 7600 5.0 4.2 119 7.3 7.0 104
TRIAL LAKE 9960 9.1 8.2 111 11.9 9.1 131
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Basin wide percent of average 114 116
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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.