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: MARCH 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 20.5 17.5 117 24.5 20.5 120
COTTONWOOD CREEK 7600 27.3 22.2 123 29.6 25.9 114
GRANITE CREEK 6770 20.6 18.1 114 22.5 19.1 118
GRASSY LAKE 7265 37.0 33.8 109 40.5 34.3 118
GROS VENTRE SUMMIT 8750 11.5 13.3 86 12.1 12.1 100
LEWIS LAKE DIVIDE 7850 39.8 33.7 118 38.0 35.0 109
PHILLIPS BENCH 8200 31.7 27.3 116 31.9 27.5 116
SALT RIVER SUMMIT 7600 15.6 13.8 113 18.2 17.8 102
SNAKE RIVER STATION 6920 20.7 18.6 111 25.3 21.3 119
SPRING CREEK DIVIDE 9000 29.4 25.1 117 -M 25.1 *
THUMB DIVIDE 7980 18.2 17.9 102 18.2 17.9 102
TOGWOTEE PASS 9580 23.5 23.4 100 24.6 23.3 106
TWO OCEAN PLATEAU 9240 33.9 26.4 128 25.0 26.2 95
WILLOW CREEK 8450 33.3 28.8 116 37.6 30.4 124
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Basin wide percent of average 113 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.7 22.4 92 18.2 19.1 95
BLACK BEAR 8170 46.6 37.4 125 -M 38.0 *
CANYON 8090 14.1 13.1 108 16.6 14.6 114
FISHER CREEK 9100 38.1 33.2 115 35.4 34.4 103
MADISON PLATEAU 7750 25.9 23.9 108 30.2 25.2 120
NORTHEAST ENTRANCE 7350 9.9 10.8 92 11.9 12.0 99
PARKER PEAK 9400 17.6 20.5 86 15.8 15.4 103
SYLVAN LAKE 8420 17.2 21.2 81 21.1 19.9 106
THUMB DIVIDE 7980 18.2 17.9 102 18.2 17.9 102
TWO OCEAN PLATEAU 9240 33.9 26.4 128 25.0 26.2 95
WHISKEY CREEK 6800 15.6 16.3 96 22.0 19.7 112
WHITE MILL 8700 24.7 23.0 107 22.1 25.5 87
WOLVERINE 7650 8.9 11.4 78 8.6 12.2 70
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Basin wide percent of average 105 101
WIND RIVER
BURROUGHS CREEK 8750 13.3 13.9 96 15.4 15.4 100
COLD SPRINGS 9630 5.4 8.3 65 8.1 9.8 83
DEER PARK 9700 16.1 15.8 102 19.5 20.4 96
HOBBS PARK 10100 10.4 13.7 76 11.0 11.7 94
LITTLE WARM 9370 8.6 11.0 78 11.2 12.5 90
SOUTH PASS 9040 15.6 15.8 99 16.2 17.2 94
ST. LAWRENCE ALT 8620 3.8 6.8 56 6.5 8.2 79
TOGWOTEE PASS 9580 23.5 23.4 100 24.6 23.3 106
TOWNSEND CREEK 8700 6.3 8.0 79 9.0 10.6 85
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Basin wide percent of average 88 94
BIGHORN BASIN
BALD MTN. 9380 14.3 18.3 78 11.5 16.2 71
BEAR TRAP MEADOW 8200 5.6 5.0 112 7.4 7.6 97
BLACKWATER 9780 21.1 23.1 91 19.1 19.3 99
BONE SPRINGS DIV 9350 13.0 15.0 87 13.0 13.5 96
EVENING STAR 9200 23.8 28.1 85 26.3 24.1 109
GRAVE SPRINGS 8550 8.7 8.6 101 10.7 9.0 119
KIRWIN 9550 9.3 10.5 89 10.0 10.5 95
MARQUETTE 8760 2.3 8.0 29 6.6 8.9 74
MIDDLE POWDER 7760 11.1 10.6 105 9.3 11.3 82
OWL CREEK 8975 3.0 5.0 60 5.0 5.3 94
POWDER RIVER PASS 9480 9.0 10.1 89 10.5 11.5 91
SHELL CREEK 9580 12.8 13.6 94 11.9 12.4 96
SYLVAN LAKE 8420 17.2 21.2 81 21.1 19.9 106
SYLVAN ROAD 7120 10.3 12.4 83 15.8 16.9 93
TIMBER CREEK 7950 2.2 5.2 42 4.9 6.6 74
YOUNTS PEAK 8350 -M 16.2 * 15.7 15.3 103
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Basin wide percent of average 84 95
SHOSHONE RIVER
BLACKWATER 9780 21.1 23.1 91 19.1 19.3 99
EVENING STAR 9200 23.8 28.1 85 26.3 24.1 109
KIRWIN 9550 9.3 10.5 89 10.0 10.5 95
MARQUETTE 8760 2.3 8.0 29 6.6 8.9 74
SYLVAN LAKE 8420 17.2 21.2 81 21.1 19.9 106
SYLVAN ROAD 7120 10.3 12.4 83 15.8 16.9 93
YOUNTS PEAK 8350 -M 16.2 * 15.7 15.3 103
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Basin wide percent of average 81 100
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 5.0 112 7.4 7.6 97
BIG GOOSE 7990 6.0 9.3 65 8.0 7.8 103
BONE SPRINGS DIV 9350 13.0 15.0 87 13.0 13.5 96
BURGESS JUNCTION 7880 8.9 10.5 85 10.0 11.2 89
CLOUD PEAK RESERVOIR 9860 11.8 12.0 98 10.7 11.7 91
DOME LAKE 8880 9.5 11.1 86 10.2 12.0 85
GRAVE SPRINGS 8550 8.7 8.6 101 10.7 9.0 119
HANSEN SAWMILL 8360 4.1 6.0 68 6.1 7.5 81
MIDDLE POWDER 7760 11.1 10.6 105 9.3 11.3 82
POWDER RIVER PASS 9480 9.0 10.1 89 10.5 11.5 91
SUCKER CREEK 8880 9.6 10.6 91 12.4 12.4 100
TIE CREEK 6870 4.9 5.9 83 9.2 9.1 101
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Basin wide percent of average 89 94
BELLE FOURCHE
BLIND PARK 6890 7.4 8.4 88 10.0 10.4 96
COLE CANYON 5910 5.3 5.8 91 8.8 -M *
NORTH RAPID CREEK 6130 6.3 7.7 82 8.2 8.2 100
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Basin wide percent of average 87 98
UPPER N. PLATTE RIVER
COLUMBINE 9160 29.8 24.2 123 31.5 23.6 133
DIVIDE PEAK 8860 18.4 18.4 100 20.8 19.3 108
ELK RIVER 8700 19.6 18.3 107 20.0 18.3 109
JOE WRIGHT 10120 20.8 19.7 106 24.6 23.1 106
NORTH FRENCH CREEK 10130 31.5 26.7 118 30.5 23.0 133
OLD BATTLE 9920 35.5 30.1 118 39.2 32.4 121
SAGE CREEK BASIN 7850 12.8 10.7 120 13.5 11.2 121
SOUTH BRUSH CREEK 8440 12.1 12.1 100 15.7 15.2 103
TOWER 10500 49.2 42.6 115 45.9 36.0 127
WEBBER SPRINGS 9250 27.0 24.9 108 32.5 25.0 130
WILLOW CREEK PASS 9540 12.0 11.0 109 13.0 11.9 109
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Basin wide percent of average 113 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 24.3 21.9 111 20.8 20.3 102
CASPER MTN. 7850 15.4 13.1 118 16.0 13.1 122
DEADMAN HILL 10220 15.7 15.0 105 17.1 15.6 110
DEER PARK 9700 16.1 15.8 102 19.5 20.4 96
LAPRELE CREEK 8375 10.0 10.3 97 10.7 11.6 92
RENO HILL 8500 14.7 12.7 116 15.9 13.6 117
ROACH 9700 15.7 15.9 99 16.1 17.2 94
SAND LAKE 10050 30.7 29.9 103 29.4 22.3 132
SOUTH PASS 9040 15.6 15.8 99 16.2 17.2 94
WINDY PEAK 7900 7.6 7.5 101 9.6 9.8 98
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Basin wide percent of average 105 106
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.2 11.1 128 15.5 14.5 107
DIVIDE PEAK 8860 18.4 18.4 100 20.8 19.3 108
OLD BATTLE 9920 35.5 30.1 118 39.2 32.4 121
SANDSTONE RS 8150 15.6 14.4 108 20.5 17.6 116
WHISKEY PARK 8950 36.1 28.2 128 31.4 26.7 118
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Basin wide percent of average 117 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.2 13.7 104 14.4 12.6 114
BLIND BULL SUM 8900 26.7 26.5 101 20.1 21.2 95
EAST RIM DIVIDE 7930 10.3 12.5 82 10.7 11.4 94
ELKHART PARK G.S. 9400 12.7 12.7 100 13.5 12.4 109
GROS VENTRE SUMMIT 8750 11.5 13.3 86 12.1 12.1 100
KENDALL R.S. 7740 14.0 14.1 99 14.6 13.8 106
LOOMIS PARK 8240 17.9 16.6 108 18.4 16.5 112
NEW FORK LAKE 8340 10.2 10.7 95 9.8 10.7 92
SNIDER BASIN 8060 17.5 13.9 126 16.4 15.3 107
SPRING CREEK DIVIDE 9000 29.4 25.1 117 -M 25.1 *
TRIPLE PEAK 8500 28.7 23.7 121 29.4 23.4 126
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Basin wide percent of average 106 107
LOWER GREEN RIVER
HAMS FORK 7840 15.0 12.1 124 13.5 11.6 116
HEWINTA 9500 12.2 10.9 112 14.2 13.5 105
HICKERSON PARK 9100 4.7 6.9 68 7.2 7.3 99
HOLE-IN-ROCK 9150 6.8 6.6 103 7.5 6.8 110
INDIAN CREEK 9425 30.0 26.0 115 -M 23.9 *
KELLEY R.S. 8180 19.3 16.0 121 21.2 19.3 110
STEEL CREEK PARK 10100 14.8 14.7 101 16.2 15.0 108
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Basin wide percent of average 110 109
UPPER BEAR RIVER
BUG LAKE 7950 24.3 19.7 123 21.4 18.2 118
HAYDEN FORK 9100 20.5 15.4 133 23.3 19.6 119
KELLEY R.S. 8180 19.3 16.0 121 21.2 19.3 110
LILY LAKE 9050 14.0 12.4 113 15.3 16.3 94
MONTE CRISTO 8960 32.8 28.3 116 28.9 23.9 121
SALT RIVER SUMMIT 7600 15.6 13.8 113 18.2 17.8 102
TRIAL LAKE 9960 28.0 23.7 118 24.9 23.4 106
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Basin wide percent of average 119 111
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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.