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: MAY 9 , 2005
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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 .1 9.0 1 17.1 25.1 68
COTTONWOOD CREEK 7600 11.1 16.4 68 26.8 32.9 81
GRANITE CREEK 6770 2.5 9.9 25 17.7 23.0 77
GRASSY LAKE 7265 14.5 29.5 49 28.1 42.0 67
GROS VENTRE SUMMIT 8750 9.8 11.4 86 13.1 15.9 82
LEWIS LAKE DIVIDE 7850 15.6 31.4 50 25.0 42.6 59
PHILLIPS BENCH 8200 19.7 26.4 75 25.9 34.0 76
SALT RIVER SUMMIT 7600 7.8 7.3 107 20.2 22.2 91
SNAKE RIVER STATION 6920 .2 8.5 2 15.5 26.2 59
SPRING CREEK DIVIDE 9000 25.6 26.4 97 26.3 30.9 85
THUMB DIVIDE 7980 4.9 11.9 41 14.9 22.7 66
TOGWOTEE PASS 9580 18.2 27.6 66 20.0 30.0 67
TWO OCEAN PLATEAU 9240 26.1 31.2 84 21.8 33.2 66
WILLOW CREEK 8450 19.8 27.6 72 36.0 39.0 92
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Basin wide percent of average 64 73
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 17.2 25.7 67 16.6 24.4 68
BLACK BEAR 8170 33.3 38.0 88 34.9 47.0 74
CANYON 8090 3.8 8.9 43 12.1 18.4 66
FISHER CREEK 9100 24.0 37.1 65 28.5 43.1 66
MADISON PLATEAU 7750 16.5 21.5 77 23.6 31.4 75
NORTHEAST ENTRANCE 7350 .1 4.9 2 9.2 15.5 59
PARKER PEAK 9400 16.2 24.2 67 15.6 20.5 76
SYLVAN LAKE 8420 9.4 21.8 43 19.6 25.8 76
THUMB DIVIDE 7980 4.9 11.9 41 14.9 22.7 66
TWO OCEAN PLATEAU 9240 26.1 31.2 84 21.8 33.2 66
WHISKEY CREEK 6800 9.0 12.1 74 18.4 25.0 74
WHITE MILL 8700 18.1 25.4 71 18.3 32.2 57
WOLVERINE 7650 .2 4.9 4 9.2 16.0 57
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Basin wide percent of average 67 68
WIND RIVER
BURROUGHS CREEK 8750 10.9 11.8 92 13.3 20.2 66
COLD SPRINGS 9630 1.8 3.9 46 10.7 14.7 73
DEER PARK 9700 25.9 17.8 146 29.6 28.0 106
HOBBS PARK 10100 18.2 17.3 105 18.3 18.0 102
LITTLE WARM 9370 5.9 9.2 64 11.9 17.6 68
SOUTH PASS 9040 19.5 15.8 123 24.5 23.6 104
ST. LAWRENCE ALT 8620 4.1 4.7 87 11.7 12.9 91
TOGWOTEE PASS 9580 18.2 27.6 66 20.0 30.0 67
TOWNSEND CREEK 8700 8.7 7.2 121 17.5 16.4 107
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Basin wide percent of average 98 87
BIGHORN BASIN
BALD MTN. 9380 18.7 23.3 80 19.8 22.3 89
BEAR TRAP MEADOW 8200 .9 1.5 60 10.6 11.8 90
BLACKWATER 9780 17.2 28.8 60 17.4 25.8 67
BONE SPRINGS DIV 9350 16.6 17.1 97 19.8 19.3 103
EVENING STAR 9200 17.1 32.8 52 22.9 31.1 74
GRAVE SPRINGS 8550 5.3 9.3 57 10.8 13.9 78
KIRWIN 9550 9.0 11.9 76 11.6 15.1 77
MARQUETTE 8760 5.9 9.9 60 10.9 14.8 74
MIDDLE POWDER 7760 8.6 12.5 69 10.1 16.7 60
OWL CREEK 8975 1.3 3.0 43 8.6 8.9 97
POWDER RIVER PASS 9480 7.9 9.2 86 16.5 16.8 98
SHELL CREEK 9580 -M 16.5 * 17.6 17.8 99
SYLVAN LAKE 8420 9.4 21.8 43 19.6 25.8 76
SYLVAN ROAD 7120 .1 5.0 2 12.4 21.2 58
TIMBER CREEK 7950 .6 3.3 18 7.4 11.5 64
YOUNTS PEAK 8350 10.0 16.6 60 13.4 19.7 68
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Basin wide percent of average 62 78
SHOSHONE RIVER
BLACKWATER 9780 17.2 28.8 60 17.4 25.8 67
EVENING STAR 9200 17.1 32.8 52 22.9 31.1 74
KIRWIN 9550 9.0 11.9 76 11.6 15.1 77
MARQUETTE 8760 5.9 9.9 60 10.9 14.8 74
SYLVAN LAKE 8420 9.4 21.8 43 19.6 25.8 76
SYLVAN ROAD 7120 .1 5.0 2 12.4 21.2 58
YOUNTS PEAK 8350 10.0 16.6 60 13.4 19.7 68
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Basin wide percent of average 54 70
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .9 1.5 60 10.6 11.8 90
BIG GOOSE 7990 -M 10.2 * -M 13.8 *
BONE SPRINGS DIV 9350 16.6 17.1 97 19.8 19.3 103
BURGESS JUNCTION 7880 10.9 11.5 95 15.5 16.2 96
CLOUD PEAK RESERVOIR 9860 17.8 15.4 116 19.1 18.3 104
DOME LAKE 8880 10.1 11.7 86 18.2 17.8 102
GRAVE SPRINGS 8550 5.3 9.3 57 10.8 13.9 78
HANSEN SAWMILL 8360 1.7 3.4 50 12.7 11.8 108
MIDDLE POWDER 7760 8.6 12.5 69 10.1 16.7 60
POWDER RIVER PASS 9480 7.9 9.2 86 16.5 16.8 98
SUCKER CREEK 8880 13.0 11.4 114 19.8 18.5 107
TIE CREEK 6870 .1 2.4 4 14.1 14.5 97
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Basin wide percent of average 88 95
BELLE FOURCHE
BLIND PARK 6890 .0 1.8 0 11.8 15.2 78
COLE CANYON 5910 .0 4.0 0 9.9 -M *
NORTH RAPID CREEK 6130 .1 2.0 5 9.7 12.1 80
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Basin wide percent of average 1 79
UPPER N. PLATTE RIVER
COLUMBINE 9160 9.7 16.4 59 -M 30.0 *
DIVIDE PEAK 8860 17.8 15.6 114 27.9 25.1 111
ELK RIVER 8700 12.3 10.8 114 25.2 23.8 106
JOE WRIGHT 10120 23.2 24.4 95 26.6 31.3 85
NORTH FRENCH CREEK 10130 29.7 33.8 88 30.3 30.9 98
OLD BATTLE 9920 40.9 36.1 113 -M 41.0 *
SAGE CREEK BASIN 7850 .2 9.0 2 18.7 14.6 128
SOUTH BRUSH CREEK 8440 5.6 8.5 66 17.9 21.0 85
TOWER 10500 43.9 51.8 85 45.8 46.4 99
WEBBER SPRINGS 9250 20.8 21.1 99 31.7 32.0 99
WILLOW CREEK PASS 9540 16.8 12.5 134 15.9 16.5 96
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Basin wide percent of average 92 99
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 18.9 25.3 75 21.9 28.1 78
CASPER MTN. 7850 7.3 14.0 52 15.7 20.7 76
DEADMAN HILL 10220 18.2 18.7 97 18.3 22.0 83
DEER PARK 9700 25.9 17.8 146 29.6 28.0 106
LAPRELE CREEK 8375 .0 5.1 0 12.7 17.4 73
RENO HILL 8500 8.0 11.8 68 15.3 21.4 71
ROACH 9700 15.6 15.6 100 21.8 23.4 93
SAND LAKE 10050 27.0 36.1 75 27.6 30.6 90
SOUTH PASS 9040 19.5 15.8 123 24.5 23.6 104
WINDY PEAK 7900 1.1 3.1 35 10.9 14.4 76
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Basin wide percent of average 87 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 2.3 0 18.7 19.2 97
DIVIDE PEAK 8860 17.8 15.6 114 27.9 25.1 111
OLD BATTLE 9920 40.9 36.1 113 -M 41.0 *
SANDSTONE RS 8150 4.8 6.2 77 23.2 22.6 103
WHISKEY PARK 8950 26.3 28.2 93 30.8 34.8 89
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Basin wide percent of average 102 99
UPPER GREEN RIVER
BIG SANDY OPENING 9080 -M 10.9 * -M 16.6 *
BLIND BULL SUM 8900 19.3 26.2 74 18.9 25.9 73
EAST RIM DIVIDE 7930 .2 10.9 2 12.4 14.5 86
ELKHART PARK G.S. 9400 12.4 10.9 114 17.4 16.8 104
GROS VENTRE SUMMIT 8750 9.8 11.4 86 13.1 15.9 82
KENDALL R.S. 7740 .2 6.4 3 14.7 17.1 86
LOOMIS PARK 8240 6.6 11.7 56 18.4 20.6 89
NEW FORK LAKE 8340 5.9 5.8 102 13.3 14.0 95
SNIDER BASIN 8060 8.6 9.8 88 16.0 19.0 84
SPRING CREEK DIVIDE 9000 25.6 26.4 97 26.3 30.9 85
TRIPLE PEAK 8500 11.4 19.9 57 23.4 29.5 79
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Basin wide percent of average 72 85
LOWER GREEN RIVER
HAMS FORK 7840 2.1 3.2 66 17.3 15.3 113
HEWINTA 9500 3.3 6.6 50 15.4 18.4 84
HICKERSON PARK 9100 .5 3.6 14 12.8 10.8 119
HOLE-IN-ROCK 9150 .3 3.0 10 12.7 10.3 123
INDIAN CREEK 9425 32.5 25.7 126 29.5 30.3 97
KELLEY R.S. 8180 13.0 11.2 116 23.5 24.3 97
STEEL CREEK PARK 10100 19.5 18.3 107 19.7 21.0 94
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Basin wide percent of average 99 100
UPPER BEAR RIVER
BUG LAKE 7950 18.9 13.9 136 27.6 23.1 119
HAYDEN FORK 9100 7.9 9.7 81 28.2 26.0 108
KELLEY R.S. 8180 13.0 11.2 116 23.5 24.3 97
LILY LAKE 9050 8.6 8.4 102 -M 21.9 *
MONTE CRISTO 8960 30.6 25.1 122 35.4 31.3 113
SALT RIVER SUMMIT 7600 7.8 7.3 107 20.2 22.2 91
TRIAL LAKE 9960 32.9 24.6 134 34.9 30.4 115
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Basin wide percent of average 119 108
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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.