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: FEBRUARY 28 , 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 17.9 15.9 113 22.5 18.5 122
COTTONWOOD CREEK 7600 24.6 18.3 134 26.8 22.8 118
GRANITE CREEK 6770 18.5 16.0 116 20.6 17.3 119
GRASSY LAKE 7265 31.6 29.3 108 -M 30.8 *
GROS VENTRE SUMMIT 8750 10.1 11.4 89 10.7 10.7 100
LEWIS LAKE DIVIDE 7850 34.8 29.5 118 -M 31.3 *
PHILLIPS BENCH 8200 26.9 23.7 114 28.0 24.4 115
SALT RIVER SUMMIT 7600 13.6 12.1 112 16.6 15.7 106
SNAKE RIVER STATION 6920 17.6 16.5 107 22.7 19.4 117
SPRING CREEK DIVIDE 9000 27.0 22.0 123 -M 22.4 *
THUMB DIVIDE 7980 15.0 15.3 98 15.8 15.9 99
TOGWOTEE PASS 9580 21.2 20.6 103 22.2 20.6 108
TWO OCEAN PLATEAU 9240 30.8 23.1 133 24.3 23.2 105
WILLOW CREEK 8450 29.1 25.2 115 33.5 26.8 125
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Basin wide percent of average 114 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.4 19.6 99 17.0 17.0 100
BLACK BEAR 8170 41.2 32.6 126 -M 33.0 *
CANYON 8090 12.1 11.2 108 14.9 12.9 116
FISHER CREEK 9100 35.1 29.4 119 32.9 30.4 108
MADISON PLATEAU 7750 22.0 20.7 106 26.1 21.9 119
NORTHEAST ENTRANCE 7350 9.0 9.6 94 10.8 10.7 101
PARKER PEAK 9400 16.1 18.1 89 14.7 13.6 108
SYLVAN LAKE 8420 14.9 18.7 80 18.7 17.8 105
THUMB DIVIDE 7980 15.0 15.3 98 15.8 15.9 99
TWO OCEAN PLATEAU 9240 30.8 23.1 133 24.3 23.2 105
WHISKEY CREEK 6800 13.1 14.3 92 19.1 17.3 110
WHITE MILL 8700 22.3 20.1 111 20.4 22.5 91
WOLVERINE 7650 8.4 10.5 80 8.3 11.1 75
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Basin wide percent of average 107 104
WIND RIVER
BURROUGHS CREEK 8750 12.0 12.5 96 14.2 13.6 104
COLD SPRINGS 9630 4.3 7.1 61 6.8 8.4 81
DEER PARK 9700 13.6 14.3 95 16.9 17.7 95
HOBBS PARK 10100 8.1 11.8 69 9.0 9.8 92
LITTLE WARM 9370 7.4 9.4 79 9.8 10.8 91
SOUTH PASS 9040 13.5 13.9 97 14.4 14.9 97
ST. LAWRENCE ALT 8620 2.5 5.9 42 4.9 7.0 70
TOGWOTEE PASS 9580 21.2 20.6 103 22.2 20.6 108
TOWNSEND CREEK 8700 5.2 6.9 75 7.8 8.8 89
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Basin wide percent of average 86 95
BIGHORN BASIN
BALD MTN. 9380 12.7 15.9 80 10.2 14.0 73
BEAR TRAP MEADOW 8200 4.8 4.3 112 6.4 6.4 100
BLACKWATER 9780 18.9 20.2 94 17.2 17.1 101
BONE SPRINGS DIV 9350 11.1 13.1 85 11.5 11.5 100
EVENING STAR 9200 21.8 24.8 88 24.2 21.6 112
GRAVE SPRINGS 8550 7.8 7.2 108 9.6 7.8 123
KIRWIN 9550 8.3 9.0 92 9.2 9.1 101
MARQUETTE 8760 1.8 6.9 26 6.3 7.5 84
MIDDLE POWDER 7760 10.4 8.9 117 8.9 9.6 93
OWL CREEK 8975 2.6 4.1 63 4.9 4.4 111
POWDER RIVER PASS 9480 8.2 8.6 95 9.8 9.9 99
SHELL CREEK 9580 11.6 11.7 99 10.6 10.7 99
SYLVAN LAKE 8420 14.9 18.7 80 18.7 17.8 105
SYLVAN ROAD 7120 9.2 11.3 81 14.2 15.5 92
TIMBER CREEK 7950 1.7 4.2 40 3.9 5.4 72
YOUNTS PEAK 8350 12.6 14.5 87 15.3 13.5 113
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Basin wide percent of average 86 100
SHOSHONE RIVER
BLACKWATER 9780 18.9 20.2 94 17.2 17.1 101
EVENING STAR 9200 21.8 24.8 88 24.2 21.6 112
KIRWIN 9550 8.3 9.0 92 9.2 9.1 101
MARQUETTE 8760 1.8 6.9 26 6.3 7.5 84
SYLVAN LAKE 8420 14.9 18.7 80 18.7 17.8 105
SYLVAN ROAD 7120 9.2 11.3 81 14.2 15.5 92
YOUNTS PEAK 8350 12.6 14.5 87 15.3 13.5 113
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Basin wide percent of average 83 103
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.8 4.3 112 6.4 6.4 100
BIG GOOSE 7990 5.3 7.6 70 7.5 6.8 110
BONE SPRINGS DIV 9350 11.1 13.1 85 11.5 11.5 100
BURGESS JUNCTION 7880 8.1 8.9 91 9.5 9.4 101
CLOUD PEAK RESERVOIR 9860 10.6 9.9 107 10.1 9.7 104
DOME LAKE 8880 8.6 9.4 91 9.2 10.1 91
GRAVE SPRINGS 8550 7.8 7.2 108 9.6 7.8 123
HANSEN SAWMILL 8360 3.4 5.2 65 5.4 6.3 86
MIDDLE POWDER 7760 10.4 8.9 117 8.9 9.6 93
POWDER RIVER PASS 9480 8.2 8.6 95 9.8 9.9 99
SUCKER CREEK 8880 8.5 9.0 94 11.3 10.4 109
TIE CREEK 6870 4.5 4.9 92 8.4 7.9 106
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Basin wide percent of average 94 102
BELLE FOURCHE
BLIND PARK 6890 6.8 7.0 97 9.2 9.2 100
COLE CANYON 5910 4.8 5.1 94 7.8 -M *
NORTH RAPID CREEK 6130 5.9 6.7 88 7.3 7.5 97
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Basin wide percent of average 93 99
UPPER N. PLATTE RIVER
COLUMBINE 9160 27.2 21.7 125 29.2 20.8 140
DIVIDE PEAK 8860 14.7 15.5 95 17.6 16.9 104
ELK RIVER 8700 16.8 16.0 105 17.5 16.0 109
JOE WRIGHT 10120 18.1 17.2 105 22.1 20.1 110
NORTH FRENCH CREEK 10130 28.3 22.5 126 27.6 20.1 137
OLD BATTLE 9920 30.5 26.1 117 34.5 28.3 122
SAGE CREEK BASIN 7850 10.5 8.9 118 12.3 9.8 126
SOUTH BRUSH CREEK 8440 9.9 9.9 100 14.3 13.2 108
TOWER 10500 44.3 37.3 119 -M 31.7 *
WEBBER SPRINGS 9250 22.2 21.1 105 27.9 22.0 127
WILLOW CREEK PASS 9540 10.8 9.5 114 11.4 10.3 111
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Basin wide percent of average 113 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 20.8 18.9 110 17.7 17.4 102
CASPER MTN. 7850 13.6 11.2 121 14.8 11.0 135
DEADMAN HILL 10220 13.0 12.9 101 14.3 13.2 108
DEER PARK 9700 13.6 14.3 95 16.9 17.7 95
LAPRELE CREEK 8375 8.4 8.8 95 9.3 9.9 94
RENO HILL 8500 13.1 10.3 127 14.5 11.4 127
ROACH 9700 12.3 13.8 89 15.4 14.8 104
SAND LAKE 10050 26.7 25.0 107 25.6 19.2 133
SOUTH PASS 9040 13.5 13.9 97 14.4 14.9 97
WINDY PEAK 7900 5.8 6.0 97 7.8 8.4 93
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Basin wide percent of average 104 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.8 9.6 123 13.8 12.2 113
DIVIDE PEAK 8860 14.7 15.5 95 17.6 16.9 104
OLD BATTLE 9920 30.5 26.1 117 34.5 28.3 122
SANDSTONE RS 8150 12.6 12.4 102 18.1 15.6 116
WHISKEY PARK 8950 31.5 23.6 133 29.9 23.3 128
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Basin wide percent of average 116 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.6 12.0 105 12.9 11.2 115
BLIND BULL SUM 8900 23.9 22.9 104 18.3 19.0 96
EAST RIM DIVIDE 7930 9.5 10.9 87 10.1 10.1 100
ELKHART PARK G.S. 9400 11.9 11.0 108 12.6 10.8 117
GROS VENTRE SUMMIT 8750 10.1 11.4 89 10.7 10.7 100
KENDALL R.S. 7740 13.1 12.3 107 13.7 12.4 110
LOOMIS PARK 8240 16.4 14.4 114 17.1 14.7 116
NEW FORK LAKE 8340 9.7 9.5 102 9.6 9.5 101
SNIDER BASIN 8060 15.2 12.3 124 14.9 13.6 110
SPRING CREEK DIVIDE 9000 27.0 22.0 123 -M 22.4 *
TRIPLE PEAK 8500 25.7 20.7 124 26.5 20.5 129
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Basin wide percent of average 110 110
LOWER GREEN RIVER
HAMS FORK 7840 13.1 10.9 120 12.1 10.3 117
HEWINTA 9500 9.6 9.0 107 12.4 11.5 108
HICKERSON PARK 9100 3.3 5.8 57 5.5 6.2 89
HOLE-IN-ROCK 9150 5.7 5.6 102 6.4 5.8 110
INDIAN CREEK 9425 26.3 22.1 119 -M 20.9 *
KELLEY R.S. 8180 17.2 13.9 124 19.1 17.1 112
STEEL CREEK PARK 10100 12.6 12.6 100 14.0 12.8 109
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Basin wide percent of average 110 109
UPPER BEAR RIVER
BUG LAKE 7950 20.8 17.0 122 18.5 16.1 115
HAYDEN FORK 9100 16.5 13.1 126 20.0 17.0 118
KELLEY R.S. 8180 17.2 13.9 124 19.1 17.1 112
LILY LAKE 9050 11.5 10.7 107 13.4 14.2 94
MONTE CRISTO 8960 26.1 24.5 107 25.9 20.9 124
SALT RIVER SUMMIT 7600 13.6 12.1 112 16.6 15.7 106
TRIAL LAKE 9960 23.8 20.4 117 23.1 20.3 114
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Basin wide percent of average 116 113
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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.