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: MARCH 21 , 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 20.5 17.6 116 24.5 20.6 119
COTTONWOOD CREEK 7600 27.3 22.4 122 29.5 26.1 113
GRANITE CREEK 6770 20.6 18.1 114 22.5 19.1 118
GRASSY LAKE 7265 37.0 34.0 109 40.5 34.5 117
GROS VENTRE SUMMIT 8750 11.6 13.4 87 12.1 12.2 99
LEWIS LAKE DIVIDE 7850 40.0 33.9 118 38.1 35.2 108
PHILLIPS BENCH 8200 31.8 27.5 116 32.1 27.7 116
SALT RIVER SUMMIT 7600 15.6 13.8 113 18.2 17.9 102
SNAKE RIVER STATION 6920 20.8 18.6 112 25.4 21.4 119
SPRING CREEK DIVIDE 9000 29.5 25.3 117 -M 25.3 *
THUMB DIVIDE 7980 18.3 18.0 102 18.2 18.0 101
TOGWOTEE PASS 9580 23.6 23.6 100 24.6 23.4 105
TWO OCEAN PLATEAU 9240 33.9 26.6 127 25.0 26.4 95
WILLOW CREEK 8450 33.4 28.9 116 37.6 30.6 123
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Basin wide percent of average 113 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.6 22.5 92 18.2 19.2 95
BLACK BEAR 8170 46.7 37.6 124 -M 38.2 *
CANYON 8090 14.3 13.1 109 16.6 14.7 113
FISHER CREEK 9100 38.1 33.4 114 35.6 34.6 103
MADISON PLATEAU 7750 26.0 24.0 108 -M 25.3 *
NORTHEAST ENTRANCE 7350 9.9 10.8 92 11.9 12.1 98
PARKER PEAK 9400 17.6 20.6 85 15.9 15.4 103
SYLVAN LAKE 8420 17.2 21.4 80 21.1 20.0 106
THUMB DIVIDE 7980 18.3 18.0 102 18.2 18.0 101
TWO OCEAN PLATEAU 9240 33.9 26.6 127 25.0 26.4 95
WHISKEY CREEK 6800 15.7 16.4 96 22.1 19.9 111
WHITE MILL 8700 24.8 23.1 107 22.3 25.7 87
WOLVERINE 7650 8.9 11.4 78 8.5 12.3 69
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Basin wide percent of average 105 99
WIND RIVER
BURROUGHS CREEK 8750 13.2 14.0 94 15.4 15.4 100
COLD SPRINGS 9630 5.3 8.4 63 8.1 9.9 82
DEER PARK 9700 16.1 15.9 101 19.5 20.6 95
HOBBS PARK 10100 10.4 13.8 75 10.8 11.8 92
LITTLE WARM 9370 8.6 11.1 77 11.2 12.6 89
SOUTH PASS 9040 15.5 15.9 97 16.2 17.3 94
ST. LAWRENCE ALT 8620 3.7 6.9 54 6.5 8.2 79
TOGWOTEE PASS 9580 23.6 23.6 100 24.6 23.4 105
TOWNSEND CREEK 8700 6.1 8.0 76 8.9 10.7 83
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Basin wide percent of average 87 93
BIGHORN BASIN
BALD MTN. 9380 14.4 18.4 78 11.5 16.3 71
BEAR TRAP MEADOW 8200 5.6 5.0 112 7.5 7.6 99
BLACKWATER 9780 21.1 23.2 91 19.1 19.5 98
BONE SPRINGS DIV 9350 13.1 15.1 87 13.0 13.6 96
EVENING STAR 9200 23.8 28.3 84 26.3 24.2 109
GRAVE SPRINGS 8550 8.8 8.6 102 10.7 9.0 119
KIRWIN 9550 9.3 10.6 88 10.0 10.6 94
MARQUETTE 8760 2.3 8.1 28 7.0 9.0 78
MIDDLE POWDER 7760 11.2 10.7 105 9.3 11.4 82
OWL CREEK 8975 3.0 5.0 60 5.5 5.4 102
POWDER RIVER PASS 9480 9.1 10.1 90 10.5 11.5 91
SHELL CREEK 9580 12.8 13.7 93 11.9 12.5 95
SYLVAN LAKE 8420 17.2 21.4 80 21.1 20.0 106
SYLVAN ROAD 7120 10.3 12.4 83 15.8 17.0 93
TIMBER CREEK 7950 2.2 5.2 42 4.9 6.7 73
YOUNTS PEAK 8350 13.6 16.3 83 16.0 15.3 105
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Basin wide percent of average 84 95
SHOSHONE RIVER
BLACKWATER 9780 21.1 23.2 91 19.1 19.5 98
EVENING STAR 9200 23.8 28.3 84 26.3 24.2 109
KIRWIN 9550 9.3 10.6 88 10.0 10.6 94
MARQUETTE 8760 2.3 8.1 28 7.0 9.0 78
SYLVAN LAKE 8420 17.2 21.4 80 21.1 20.0 106
SYLVAN ROAD 7120 10.3 12.4 83 15.8 17.0 93
YOUNTS PEAK 8350 13.6 16.3 83 16.0 15.3 105
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Basin wide percent of average 81 100
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 5.0 112 7.5 7.6 99
BIG GOOSE 7990 6.0 9.4 64 8.1 7.9 103
BONE SPRINGS DIV 9350 13.1 15.1 87 13.0 13.6 96
BURGESS JUNCTION 7880 8.9 10.6 84 10.3 11.2 92
CLOUD PEAK RESERVOIR 9860 11.8 12.1 98 10.7 11.8 91
DOME LAKE 8880 9.6 11.2 86 10.3 12.1 85
GRAVE SPRINGS 8550 8.8 8.6 102 10.7 9.0 119
HANSEN SAWMILL 8360 4.1 6.0 68 6.2 7.5 83
MIDDLE POWDER 7760 11.2 10.7 105 9.3 11.4 82
POWDER RIVER PASS 9480 9.1 10.1 90 10.5 11.5 91
SUCKER CREEK 8880 9.6 10.7 90 12.4 12.5 99
TIE CREEK 6870 5.0 5.9 85 9.2 9.2 100
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Basin wide percent of average 89 94
BELLE FOURCHE
BLIND PARK 6890 7.5 8.4 89 10.3 10.5 98
COLE CANYON 5910 5.4 5.8 93 9.0 -M *
NORTH RAPID CREEK 6130 6.4 7.8 82 8.4 8.2 102
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Basin wide percent of average 88 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 29.7 24.2 123 31.6 23.7 133
DIVIDE PEAK 8860 18.4 18.5 99 20.7 19.5 106
ELK RIVER 8700 19.5 18.4 106 19.9 18.4 108
JOE WRIGHT 10120 21.0 19.9 106 24.8 23.2 107
NORTH FRENCH CREEK 10130 31.3 26.9 116 30.5 23.2 131
OLD BATTLE 9920 35.4 30.3 117 39.4 32.6 121
SAGE CREEK BASIN 7850 13.0 10.8 120 13.6 11.3 120
SOUTH BRUSH CREEK 8440 12.1 12.2 99 15.7 15.3 103
TOWER 10500 49.0 42.8 114 46.0 36.2 127
WEBBER SPRINGS 9250 26.8 25.0 107 32.4 25.1 129
WILLOW CREEK PASS 9540 11.9 11.1 107 12.9 12.0 108
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Basin wide percent of average 112 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 24.3 22.0 110 20.9 20.5 102
CASPER MTN. 7850 15.5 13.2 117 15.9 13.2 120
DEADMAN HILL 10220 15.6 15.1 103 17.1 15.7 109
DEER PARK 9700 16.1 15.9 101 19.5 20.6 95
LAPRELE CREEK 8375 10.0 10.4 96 10.8 11.7 92
RENO HILL 8500 14.7 12.8 115 15.9 13.8 115
ROACH 9700 15.6 16.0 98 16.2 17.4 93
SAND LAKE 10050 30.7 30.1 102 29.4 22.5 131
SOUTH PASS 9040 15.5 15.9 97 16.2 17.3 94
WINDY PEAK 7900 7.6 7.5 101 9.7 9.9 98
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Basin wide percent of average 104 106
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.1 11.1 127 15.4 14.6 105
DIVIDE PEAK 8860 18.4 18.5 99 20.7 19.5 106
OLD BATTLE 9920 35.4 30.3 117 39.4 32.6 121
SANDSTONE RS 8150 15.6 14.4 108 20.4 17.7 115
WHISKEY PARK 8950 36.1 28.4 127 31.5 26.9 117
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Basin wide percent of average 116 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.3 13.8 104 14.4 12.7 113
BLIND BULL SUM 8900 26.9 26.6 101 20.3 21.3 95
EAST RIM DIVIDE 7930 10.3 12.5 82 10.8 11.5 94
ELKHART PARK G.S. 9400 12.8 12.8 100 13.6 12.5 109
GROS VENTRE SUMMIT 8750 11.6 13.4 87 12.1 12.2 99
KENDALL R.S. 7740 14.1 14.1 100 14.6 13.9 105
LOOMIS PARK 8240 18.0 16.7 108 18.5 16.6 111
NEW FORK LAKE 8340 10.2 10.8 94 9.8 10.8 91
SNIDER BASIN 8060 17.5 14.0 125 16.4 15.4 106
SPRING CREEK DIVIDE 9000 29.5 25.3 117 -M 25.3 *
TRIPLE PEAK 8500 28.9 23.8 121 29.5 23.5 126
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Basin wide percent of average 106 106
LOWER GREEN RIVER
HAMS FORK 7840 15.0 12.1 124 13.5 11.6 116
HEWINTA 9500 12.4 11.0 113 14.3 13.6 105
HICKERSON PARK 9100 4.7 6.9 68 7.4 7.4 100
HOLE-IN-ROCK 9150 6.9 6.7 103 7.8 6.9 113
INDIAN CREEK 9425 30.0 26.2 115 -M 24.1 *
KELLEY R.S. 8180 19.4 16.1 120 21.2 19.4 109
STEEL CREEK PARK 10100 15.1 14.8 102 16.3 15.1 108
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Basin wide percent of average 110 109
UPPER BEAR RIVER
BUG LAKE 7950 24.4 19.8 123 21.4 18.3 117
HAYDEN FORK 9100 20.6 15.5 133 23.4 19.7 119
KELLEY R.S. 8180 19.4 16.1 120 21.2 19.4 109
LILY LAKE 9050 14.2 12.5 114 15.6 16.4 95
MONTE CRISTO 8960 32.7 28.5 115 28.9 24.1 120
SALT RIVER SUMMIT 7600 15.6 13.8 113 18.2 17.9 102
TRIAL LAKE 9960 28.1 23.8 118 25.0 23.5 106
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Basin wide percent of average 119 110
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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.