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 11 , 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 4.0 5.4 74 8.5 7.3 116
COTTONWOOD CREEK 7600 6.1 6.3 97 9.0 9.6 94
GRANITE CREEK 6770 5.1 4.8 106 8.9 6.6 135
GRASSY LAKE 7265 7.9 9.9 80 12.2 11.9 103
GROS VENTRE SUMMIT 8775 5.5 4.9 112 4.9 4.9 100
LEWIS LAKE DIVIDE 7860 9.7 10.0 97 12.2 12.1 101
PHILLIPS BENCH 8200 -M 8.5 * -M 9.2 *
SALT RIVER SUMMIT 7600 3.9 3.5 111 6.3 6.2 102
SNAKE RIVER STATION 6920 -M 5.3 * -M 7.8 *
SPRING CREEK DIVIDE 9000 7.9 8.8 90 9.8 9.0 109
THUMB DIVIDE 7980 4.9 5.1 96 7.2 6.5 111
TOGWOTEE PASS 9580 8.5 8.5 100 8.6 8.6 100
TWO OCEAN PLATEAU 9360 10.5 10.0 105 9.3 9.7 96
WILLOW CREEK 8450 7.4 9.8 76 13.1 11.1 118
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Basin wide percent of average 94 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.5 8.5 88 6.9 7.0 99
BLACK BEAR 7950 -M 12.2 * -M 12.7 *
CANYON 7940 -M 4.1 * -M 5.8 *
FISHER CREEK 9100 10.4 11.7 89 10.4 10.9 95
MADISON PLATEAU 7750 7.6 7.9 96 11.3 8.6 131
NORTHEAST ENTRANCE 7350 1.7 3.4 50 3.8 4.8 79
PARKER PEAK 9400 -M 8.0 * -M 6.5 *
SYLVAN LAKE 8420 6.4 7.8 82 8.5 8.7 98
THUMB DIVIDE 7980 4.9 5.1 96 7.2 6.5 111
TWO OCEAN PLATEAU 9360 10.5 10.0 105 9.3 9.7 96
WHISKEY CREEK 6800 4.8 5.1 94 8.5 7.1 120
WHITE MILL 8700 7.6 8.2 93 7.5 8.8 85
WOLVERINE 7650 2.5 3.9 64 4.0 5.0 80
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Basin wide percent of average 89 100
WIND RIVER
BURROUGHS CREEK 8750 5.6 4.8 117 6.0 5.9 102
COLD SPRINGS 9630 1.4 3.7 38 2.2 4.4 50
DEER PARK 9700 6.6 5.3 125 7.9 -M *
HOBBS PARK 10100 4.1 6.2 66 3.4 5.3 64
LITTLE WARM 9620 3.9 4.0 98 4.6 5.0 92
SOUTH PASS 9040 5.2 6.3 83 6.3 6.4 98
ST. LAWRENCE ALT 8620 .8 3.1 26 1.9 3.7 51
TOGWOTEE PASS 9580 8.5 8.5 100 8.6 8.6 100
TOWNSEND CREEK 8700 1.6 3.5 46 2.0 4.9 41
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Basin wide percent of average 83 79
BIGHORN BASIN
BALD MTN. 9375 6.5 7.2 90 5.9 6.2 95
BEAR TRAP MEADOW 7900 1.9 2.0 95 4.1 3.7 111
BLACKWATER 9780 7.6 9.3 82 6.7 7.9 85
BONE SPRINGS DIV 9350 5.6 6.1 92 5.5 5.5 100
EVENING STAR 9200 8.1 10.4 78 9.8 9.7 101
GRAVE SPRINGS 8550 1.7 3.0 57 4.1 4.0 102
KIRWIN 9550 3.8 4.8 79 4.0 4.6 87
MARQUETTE 8760 1.4 4.2 33 1.4 4.1 34
MIDDLE POWDER 7760 1.8 4.3 42 4.1 5.2 79
OWL CREEK 8975 1.1 2.2 50 1.6 2.4 67
POWDER RIVER PASS 9480 4.5 3.9 115 5.9 4.5 131
SHELL CREEK 9580 6.5 5.7 114 6.2 5.0 124
SYLVAN LAKE 8420 6.4 7.8 82 8.5 8.7 98
SYLVAN ROAD 8120 2.9 4.5 64 7.1 8.1 88
TIMBER CREEK 7950 .4 2.5 16 -M 3.6 *
YOUNTS PEAK 8350 5.1 5.8 88 5.9 5.9 100
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Basin wide percent of average 78 95
SHOSHONE RIVER
BLACKWATER 9780 7.6 9.3 82 6.7 7.9 85
EVENING STAR 9200 8.1 10.4 78 9.8 9.7 101
KIRWIN 9550 3.8 4.8 79 4.0 4.6 87
MARQUETTE 8760 1.4 4.2 33 1.4 4.1 34
SYLVAN LAKE 8420 6.4 7.8 82 8.5 8.7 98
SYLVAN ROAD 8120 2.9 4.5 64 7.1 8.1 88
YOUNTS PEAK 8350 5.1 5.8 88 5.9 5.9 100
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Basin wide percent of average 75 89
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.9 2.0 95 4.1 3.7 111
BIG GOOSE 7990 -M -M * -M 4.4 *
BONE SPRINGS DIV 9350 5.6 6.1 92 5.5 5.5 100
BURGESS JUNCTION 7880 2.3 4.1 56 3.9 4.6 85
CLOUD PEAK RESERVOIR 9860 4.5 4.4 102 5.5 5.6 98
DOME LAKE 8880 4.1 4.7 87 6.2 5.3 117
GRAVE SPRINGS 8550 1.7 3.0 57 4.1 4.0 102
HANSEN SAWMILL 8760 1.4 2.4 58 3.4 3.5 97
MIDDLE POWDER 7760 1.8 4.3 42 4.1 5.2 79
POWDER RIVER PASS 9480 4.5 3.9 115 5.9 4.5 131
SUCKER CREEK 8880 3.6 3.8 95 5.4 5.1 106
TIE CREEK 6870 .7 1.4 50 4.2 3.8 111
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Basin wide percent of average 80 103
BELLE FOURCHE
BLIND PARK 6890 1.7 2.4 71 3.9 4.1 95
COLE CANYON 5910 .6 -M * 2.0 -M *
NORTH RAPID CREEK 6130 2.3 -M * 3.1 3.7 84
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Basin wide percent of average 71* 90
UPPER N. PLATTE RIVER
COLUMBINE 9400 5.7 6.5 88 7.6 7.8 97
DIVIDE PEAK 8800 5.2 6.4 81 6.5 7.3 89
ELK RIVER 8700 3.9 4.3 91 5.7 6.3 90
JOE WRIGHT 10120 6.9 7.3 95 7.4 9.0 82
NORTH FRENCH CREEK 10100 5.3 9.6 55 5.3 8.8 60
OLD BATTLE 10000 8.7 11.0 79 10.6 11.3 94
SAGE CREEK BASIN 7850 3.6 -M * 5.5 -M *
SOUTH BRUSH CREEK 8400 2.5 3.6 69 3.6 5.9 61
TOWER 10500 10.9 15.2 72 11.8 12.8 92
WEBBER SPRINGS 9200 6.8 8.2 83 8.2 9.3 88
WILLOW CREEK PASS 9540 2.8 4.2 67 3.9 5.0 78
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Basin wide percent of average 77 85
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.4 7.5 59 5.3 7.4 72
CASPER MTN. 7900 3.5 5.4 65 5.5 5.8 95
DEADMAN HILL 10220 2.9 5.9 49 4.1 6.0 68
DEER PARK 9700 6.6 5.3 125 7.9 -M *
LAPRELE CREEK 8320 1.7 3.9 44 4.5 4.8 94
RENO HILL 8400 3.1 5.1 61 4.8 5.7 84
ROACH 9700 2.8 5.2 54 4.3 6.2 69
SAND LAKE 10080 7.3 11.1 66 7.5 8.5 88
SOUTH PASS 9040 5.2 6.3 83 6.3 6.4 98
WINDY PEAK 7840 1.2 2.7 44 3.9 4.3 91
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Basin wide percent of average 66 84
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.7 2.4 154 -M 5.2 *
DIVIDE PEAK 8800 5.2 6.4 81 6.5 7.3 89
OLD BATTLE 10000 8.7 11.0 79 10.6 11.3 94
SANDSTONE RS 8150 3.1 3.2 97 6.7 6.5 103
WHISKEY PARK 8950 7.0 7.6 92 9.1 9.3 98
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Basin wide percent of average 91 96
UPPER GREEN RIVER
BIG SANDY OPENING 9100 6.2 5.0 124 5.3 4.9 108
BLIND BULL SUM 8650 9.4 9.1 103 9.0 7.8 115
EAST RIM DIVIDE 7930 3.3 4.1 80 5.3 4.1 129
ELKHART PARK G.S. 9400 5.0 4.4 114 5.6 5.0 112
GROS VENTRE SUMMIT 8775 5.5 4.9 112 4.9 4.9 100
KENDALL R.S. 7740 3.7 4.3 86 5.9 4.9 120
LOOMIS PARK 8240 6.3 5.6 112 7.2 5.9 122
NEW FORK LAKE 8340 3.5 3.7 95 4.5 4.4 102
SNIDER BASIN 8250 1.5 4.7 32 5.7 5.5 104
SPRING CREEK DIVIDE 9000 7.9 8.8 90 9.8 9.0 109
TRIPLE PEAK 8500 8.3 8.2 101 10.2 7.9 129
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Basin wide percent of average 96 114
LOWER GREEN RIVER
HAMS FORK 7840 4.3 3.4 126 4.1 4.2 98
HEWINTA 9500 -M 2.7 * -M 5.5 *
HICKERSON PARK 9150 1.7 1.9 89 3.7 3.5 106
HOLE-IN-ROCK 9150 2.2 1.9 116 3.8 3.2 119
INDIAN CREEK 9425 9.4 8.6 109 8.3 8.5 98
KELLEY R.S. 8180 5.5 5.3 104 7.4 7.0 106
STEEL CREEK PARK 10100 5.0 4.9 102 5.6 5.9 95
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Basin wide percent of average 108 102
UPPER BEAR RIVER
BUG LAKE 7950 5.2 5.3 98 8.1 6.7 121
HAYDEN FORK 9400 5.9 4.0 148 9.4 7.3 129
KELLEY R.S. 8180 5.5 5.3 104 7.4 7.0 106
LILY LAKE 9050 4.5 3.7 122 7.2 6.6 109
MONTE CRISTO 8960 7.7 6.9 112 10.0 8.6 116
SALT RIVER SUMMIT 7600 3.9 3.5 111 6.3 6.2 102
TRIAL LAKE 9960 8.7 7.1 123 11.4 8.1 141
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Basin wide percent of average 116 118
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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.