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: FEBRUARY 20 , 2006
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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 17.3 15.0 115 21.6 17.4 124
COTTONWOOD CREEK 7600 23.6 16.9 140 25.8 21.6 119
GRANITE CREEK 6770 17.9 14.9 120 20.1 16.2 124
GRASSY LAKE 7265 30.2 27.4 110 33.9 29.1 116
GROS VENTRE SUMMIT 8750 9.6 10.8 89 10.6 10.1 105
LEWIS LAKE DIVIDE 7850 33.2 27.6 120 32.7 29.4 111
PHILLIPS BENCH 8200 25.9 22.1 117 27.1 23.0 118
SALT RIVER SUMMIT 7600 13.0 11.3 115 15.9 14.8 107
SNAKE RIVER STATION 6920 16.9 15.3 110 21.8 18.2 120
SPRING CREEK DIVIDE 9000 26.2 20.6 127 -M 21.1 *
THUMB DIVIDE 7980 14.2 14.2 100 14.9 14.9 100
TOGWOTEE PASS 9580 20.0 19.5 103 20.9 19.4 108
TWO OCEAN PLATEAU 9240 29.3 21.9 134 23.3 21.8 107
WILLOW CREEK 8450 28.2 23.7 119 32.4 25.3 128
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Basin wide percent of average 117 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 17.6 18.7 94 15.5 16.1 96
BLACK BEAR 8170 39.7 30.5 130 -M 31.0 *
CANYON 8090 11.8 10.5 112 14.4 12.3 117
FISHER CREEK 9100 32.2 27.7 116 29.9 28.7 104
MADISON PLATEAU 7750 21.3 19.4 110 24.8 20.6 120
NORTHEAST ENTRANCE 7350 8.2 9.1 90 10.3 10.2 101
PARKER PEAK 9400 15.1 17.0 89 13.9 12.9 108
SYLVAN LAKE 8420 13.9 17.4 80 17.5 16.9 104
THUMB DIVIDE 7980 14.2 14.2 100 14.9 14.9 100
TWO OCEAN PLATEAU 9240 29.3 21.9 134 23.3 21.8 107
WHISKEY CREEK 6800 12.6 13.3 95 18.8 16.2 116
WHITE MILL 8700 20.6 18.9 109 18.1 21.3 85
WOLVERINE 7650 8.8 10.0 88 7.9 10.6 75
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Basin wide percent of average 107 103
WIND RIVER
BURROUGHS CREEK 8750 11.4 11.8 97 13.7 12.9 106
COLD SPRINGS 9630 3.9 6.7 58 6.6 8.0 82
DEER PARK 9700 13.6 13.9 98 16.7 16.7 100
HOBBS PARK 10100 8.0 11.1 72 8.6 9.4 91
LITTLE WARM 9370 6.9 8.9 78 9.6 10.3 93
SOUTH PASS 9040 13.0 13.0 100 14.2 14.1 101
ST. LAWRENCE ALT 8620 2.3 5.5 42 4.9 6.6 74
TOGWOTEE PASS 9580 20.0 19.5 103 20.9 19.4 108
TOWNSEND CREEK 8700 4.8 6.5 74 7.8 8.4 93
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Basin wide percent of average 87 97
BIGHORN BASIN
BALD MTN. 9380 11.9 15.0 79 9.2 13.4 69
BEAR TRAP MEADOW 8200 4.5 4.0 112 6.3 6.1 103
BLACKWATER 9780 17.7 19.1 93 16.1 16.2 99
BONE SPRINGS DIV 9350 -M 12.2 * -M 11.0 *
EVENING STAR 9200 20.1 23.3 86 22.5 20.4 110
GRAVE SPRINGS 8550 7.6 6.8 112 9.7 7.3 133
KIRWIN 9550 8.0 8.6 93 8.6 8.7 99
MARQUETTE 8760 -M 6.5 * 6.0 7.1 85
MIDDLE POWDER 7760 10.2 8.4 121 8.8 9.2 96
OWL CREEK 8975 2.3 3.8 61 4.2 4.2 100
POWDER RIVER PASS 9480 7.7 8.2 94 9.2 9.5 97
SHELL CREEK 9580 10.2 11.1 92 9.6 10.3 93
SYLVAN LAKE 8420 13.9 17.4 80 17.5 16.9 104
SYLVAN ROAD 7120 8.8 10.6 83 13.7 14.9 92
TIMBER CREEK 7950 1.5 4.0 38 4.1 5.1 80
YOUNTS PEAK 8350 -M 13.7 * 14.0 12.9 109
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Basin wide percent of average 89 98
SHOSHONE RIVER
BLACKWATER 9780 17.7 19.1 93 16.1 16.2 99
EVENING STAR 9200 20.1 23.3 86 22.5 20.4 110
KIRWIN 9550 8.0 8.6 93 8.6 8.7 99
MARQUETTE 8760 -M 6.5 * 6.0 7.1 85
SYLVAN LAKE 8420 13.9 17.4 80 17.5 16.9 104
SYLVAN ROAD 7120 8.8 10.6 83 13.7 14.9 92
YOUNTS PEAK 8350 -M 13.7 * 14.0 12.9 109
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Basin wide percent of average 87 101
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.5 4.0 112 6.3 6.1 103
BIG GOOSE 7990 4.7 7.1 66 6.9 6.4 108
BONE SPRINGS DIV 9350 -M 12.2 * -M 11.0 *
BURGESS JUNCTION 7880 7.4 8.4 88 8.8 9.0 98
CLOUD PEAK RESERVOIR 9860 10.0 9.3 108 9.1 9.3 98
DOME LAKE 8880 7.7 9.0 86 8.6 9.7 89
GRAVE SPRINGS 8550 7.6 6.8 112 9.7 7.3 133
HANSEN SAWMILL 8360 2.9 4.8 60 4.9 6.0 82
MIDDLE POWDER 7760 10.2 8.4 121 8.8 9.2 96
POWDER RIVER PASS 9480 7.7 8.2 94 9.2 9.5 97
SUCKER CREEK 8880 8.0 8.5 94 10.6 10.0 106
TIE CREEK 6870 4.1 4.6 89 8.1 7.5 108
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Basin wide percent of average 95 101
BELLE FOURCHE
BLIND PARK 6890 6.3 6.3 100 8.9 8.8 101
COLE CANYON 5910 4.0 4.7 85 7.3 -M *
NORTH RAPID CREEK 6130 5.5 6.2 89 6.9 7.1 97
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Basin wide percent of average 92 99
UPPER N. PLATTE RIVER
COLUMBINE 9160 26.5 20.2 131 28.0 19.5 144
DIVIDE PEAK 8860 14.2 14.6 97 17.1 15.9 108
ELK RIVER 8700 16.3 14.9 109 17.0 15.0 113
JOE WRIGHT 10120 18.0 16.1 112 21.4 18.9 113
NORTH FRENCH CREEK 10130 27.9 21.2 132 26.6 19.0 140
OLD BATTLE 9920 30.2 24.2 125 33.4 26.5 126
SAGE CREEK BASIN 7850 10.1 8.5 119 12.0 9.3 129
SOUTH BRUSH CREEK 8440 9.9 9.1 109 13.8 12.5 110
TOWER 10500 43.4 35.2 123 31.0 29.8 104
WEBBER SPRINGS 9250 21.7 19.4 112 27.2 20.8 131
WILLOW CREEK PASS 9540 10.4 8.9 117 11.1 9.7 114
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Basin wide percent of average 119 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 20.0 17.8 112 16.7 16.5 101
CASPER MTN. 7850 13.6 10.5 130 14.6 10.4 140
DEADMAN HILL 10220 12.7 12.2 104 14.1 12.4 114
DEER PARK 9700 13.6 13.9 98 16.7 16.7 100
LAPRELE CREEK 8375 8.1 8.3 98 8.9 9.4 95
RENO HILL 8500 12.9 9.7 133 14.2 10.8 131
ROACH 9700 12.1 13.0 93 14.8 13.9 106
SAND LAKE 10050 25.8 23.3 111 24.7 18.2 136
SOUTH PASS 9040 13.0 13.0 100 14.2 14.1 101
WINDY PEAK 7900 5.5 5.5 100 7.6 8.0 95
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Basin wide percent of average 108 112
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.7 9.1 118 13.3 11.5 116
DIVIDE PEAK 8860 14.2 14.6 97 17.1 15.9 108
OLD BATTLE 9920 30.2 24.2 125 33.4 26.5 126
SANDSTONE RS 8150 12.3 11.6 106 17.8 14.7 121
WHISKEY PARK 8950 30.5 22.1 138 29.5 22.1 133
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Basin wide percent of average 120 122
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.1 11.3 107 12.3 10.6 116
BLIND BULL SUM 8900 23.2 21.5 108 17.9 17.9 100
EAST RIM DIVIDE 7930 9.1 10.2 89 9.7 9.5 102
ELKHART PARK G.S. 9400 11.2 10.3 109 12.1 10.3 117
GROS VENTRE SUMMIT 8750 9.6 10.8 89 10.6 10.1 105
KENDALL R.S. 7740 11.8 11.5 103 12.9 11.6 111
LOOMIS PARK 8240 15.4 13.3 116 16.1 13.8 117
NEW FORK LAKE 8340 8.9 9.0 99 8.7 9.1 96
SNIDER BASIN 8060 14.9 11.6 128 14.2 12.9 110
SPRING CREEK DIVIDE 9000 26.2 20.6 127 -M 21.1 *
TRIPLE PEAK 8500 25.1 19.4 129 25.6 19.3 133
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Basin wide percent of average 112 112
LOWER GREEN RIVER
HAMS FORK 7840 12.4 10.1 123 11.8 9.8 120
HEWINTA 9500 9.3 8.3 112 12.3 10.9 113
HICKERSON PARK 9100 2.7 5.3 51 5.4 5.9 92
HOLE-IN-ROCK 9150 5.3 5.2 102 6.3 5.5 115
INDIAN CREEK 9425 25.6 20.6 124 -M 19.7 *
KELLEY R.S. 8180 16.7 12.8 130 18.4 16.1 114
STEEL CREEK PARK 10100 12.4 11.5 108 13.7 12.0 114
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Basin wide percent of average 114 113
UPPER BEAR RIVER
BUG LAKE 7950 20.4 15.8 129 17.8 15.1 118
HAYDEN FORK 9100 16.7 12.0 139 19.7 16.0 123
KELLEY R.S. 8180 16.7 12.8 130 18.4 16.1 114
LILY LAKE 9050 11.6 10.0 116 13.2 13.4 99
MONTE CRISTO 8960 26.0 22.6 115 24.9 19.7 126
SALT RIVER SUMMIT 7600 13.0 11.3 115 15.9 14.8 107
TRIAL LAKE 9960 23.5 18.9 124 23.0 19.0 121
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Basin wide percent of average 124 116
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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.