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: SEPTEMBER 9 , 2008
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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 .0 .0 100 36.3 32.0 113
COTTONWOOD CREEK 7670 .0 .0 100 -M 41.3 *
GRAND TARGHEE 9260 .0 -M * 51.1 -M *
GRANITE CREEK 6770 .0 .0 100 33.9 29.5 115
GRASSY LAKE 7265 .1 .0 58.4 52.0 112
GROS VENTRE SUMMIT 8750 .1 .0 22.0 23.5 94
GUNSIGHT PASS 9820 .2 -M * 23.9 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 49.9 51.8 96
PHILLIPS BENCH 8200 .0 .0 100 47.1 42.3 111
SALT RIVER SUMMIT 7760 -M .0 * -M 28.4 *
SNAKE RIVER STATION 6920 .0 .0 100 37.7 34.0 111
SPRING CREEK DIVIDE 9000 -M .0 * 33.8 38.0 89
THUMB DIVIDE 7980 .2 .0 30.5 29.4 104
TOGWOTEE PASS 9580 .0 .0 100 43.2 39.0 111
TWO OCEAN PLATEAU 9240 .2 .0 46.3 43.4 107
WILLOW CREEK 8380 .0 .0 100 56.2 49.7 113
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Basin wide percent of average * 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .1 0 36.6 33.8 108
BLACK BEAR 8170 .0 .0 100 58.5 57.9 101
CANYON 7870 .0 .0 100 29.7 26.4 112
FISHER CREEK 9100 .0 .0 100 56.0 56.3 99
MADISON PLATEAU 7750 .0 .0 100 45.1 40.6 111
NORTHEAST ENTRANCE 7350 .0 .0 100 23.1 24.6 94
PARKER PEAK 9400 .0 .1 0 42.0 29.6 142
SYLVAN LAKE 8420 .0 .0 100 42.2 35.8 118
THUMB DIVIDE 7980 .2 .0 30.5 29.4 104
TWO OCEAN PLATEAU 9240 .2 .0 46.3 43.4 107
WHISKEY CREEK 6800 .0 .0 100 36.6 33.8 108
WHITE MILL 8700 .0 .0 100 40.7 43.6 93
WOLVERINE 7650 .0 .0 100 24.3 24.4 100
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Basin wide percent of average 0 107
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 28.1 28.3 99
COLD SPRINGS 9630 .0 .0 100 20.4 22.5 91
DEER PARK 9700 .0 .0 100 33.1 36.7 90
HOBBS PARK 10100 .0 .0 100 27.1 27.0 100
LITTLE WARM 9370 .0 .0 100 25.4 26.0 98
SOUTH PASS 9040 .0 .0 100 29.7 30.8 96
ST. LAWRENCE ALT 8620 .0 .0 100 18.6 20.4 91
TOGWOTEE PASS 9580 .0 .0 100 43.2 39.0 111
TOWNSEND CREEK 8700 .0 .0 100 24.2 24.0 101
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Basin wide percent of average * 98
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100 32.1 32.1 100
BEAR TRAP MEADOW 8200 .0 .0 100 25.0 19.9 126
BLACKWATER 9780 .0 .1 0 40.7 36.8 111
BONE SPRINGS DIV 9350 .0 .0 100 33.1 30.1 110
EVENING STAR 9200 .0 .0 100 53.4 42.6 125
GRAVE SPRINGS 8550 .0 .0 100 21.8 21.6 101
KIRWIN 9550 .0 .0 100 26.2 25.5 103
MARQUETTE 8760 .0 .0 100 26.2 25.6 102
MIDDLE POWDER 7760 .0 .0 100 23.8 24.7 96
OWL CREEK 8975 .0 .0 100 17.4 16.8 104
POWDER RIVER PASS 9480 .0 .0 100 30.2 25.9 117
SHELL CREEK 9580 1.4 .0 31.5 27.6 114
SYLVAN LAKE 8420 .0 .0 100 42.2 35.8 118
SYLVAN ROAD 7120 .0 .0 100 32.8 29.1 113
TIMBER CREEK 7950 .0 .0 100 23.7 20.5 116
YOUNTS PEAK 8350 .0 .0 100 28.3 29.5 96
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Basin wide percent of average 0 110
SHOSHONE RIVER
BLACKWATER 9780 .0 .1 0 40.7 36.8 111
EVENING STAR 9200 .0 .0 100 53.4 42.6 125
KIRWIN 9550 .0 .0 100 26.2 25.5 103
MARQUETTE 8760 .0 .0 100 26.2 25.6 102
SYLVAN LAKE 8420 .0 .0 100 42.2 35.8 118
SYLVAN ROAD 7120 .0 .0 100 32.8 29.1 113
YOUNTS PEAK 8350 .0 .0 100 28.3 29.5 96
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Basin wide percent of average 0 111
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 25.0 19.9 126
BIG GOOSE 7990 .0 .0 100 26.8 21.4 125
BONE SPRINGS DIV 9350 .0 .0 100 33.1 30.1 110
BURGESS JUNCTION 7880 .0 .0 100 30.1 25.0 120
CLOUD PEAK RESERVOIR 9860 .0 .0 100 36.0 29.3 123
DOME LAKE 8880 .0 .0 100 32.0 27.2 118
GRAVE SPRINGS 8550 .0 .0 100 21.8 21.6 101
HANSEN SAWMILL 8360 .0 .0 100 27.2 20.8 131
MIDDLE POWDER 7760 .0 .0 100 23.8 24.7 96
POWDER RIVER PASS 9480 .0 .0 100 30.2 25.9 117
SUCKER CREEK 8880 .0 .0 100 35.5 28.4 125
TIE CREEK 6870 .0 .0 100 27.8 23.5 118
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Basin wide percent of average * 117
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 29.8 25.8 116
COLE CANYON 5910 .0 .0 100 28.6 21.6 132
NORTH RAPID CREEK 6130 .0 .0 100 35.8 24.3 147
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Basin wide percent of average * 131
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100 39.0 36.9 106
DIVIDE PEAK 8880 .0 .0 100 34.8 32.1 108
ELK RIVER 8700 .3 .0 33.5 31.1 108
JOE WRIGHT 10120 .1 .0 43.8 42.8 102
NORTH FRENCH CREEK 10130 .0 .0 100 43.7 41.0 107
OLD BATTLE 10000 -M .0 * -M 49.8 *
SAGE CREEK BASIN 7850 .0 .0 100 25.1 18.6 135
SOUTH BRUSH CREEK 8440 .1 .0 25.6 29.5 87
TOWER 10500 .0 .0 100 56.0 56.5 99
WEBBER SPRINGS 9250 .0 .0 100 43.8 40.0 110
WILLOW CREEK PASS 9540 .1 .0 26.9 25.2 107
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Basin wide percent of average * 105
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100 32.7 37.2 88
CASPER MTN. 7900 .0 .0 100 32.4 29.1 111
DEADMAN HILL 10220 .0 .0 100 31.2 30.2 103
DEER PARK 9700 .0 .0 100 33.1 36.7 90
LAPRELE CREEK 8375 -M .0 * 23.9 26.5 90
RENO HILL 8400 .0 .0 100 34.5 30.0 115
ROACH 9700 .0 .0 100 33.6 32.2 104
SAND LAKE 10050 .1 .0 45.2 40.4 112
SOUTH PASS 9040 .0 .0 100 29.7 30.8 96
WINDY PEAK 7900 .5 .0 -M 22.7 *
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Basin wide percent of average * 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 24.5 24.4 100
DIVIDE PEAK 8880 .0 .0 100 34.8 32.1 108
OLD BATTLE 10000 -M .0 * -M 49.8 *
SANDSTONE RS 8150 -M .0 * 31.6 29.6 107
WHISKEY PARK 8950 .0 .0 100 48.4 43.4 112
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Basin wide percent of average * 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 20.8 23.5 89
BLIND BULL SUM 8650 .0 .0 100 26.5 33.1 80
EAST RIM DIVIDE 7930 .0 .0 100 16.9 20.2 84
ELKHART PARK G.S. 9400 .1 .0 19.2 24.8 77
GROS VENTRE SUMMIT 8750 .1 .0 22.0 23.5 94
GUNSIGHT PASS 9820 .2 -M * 23.9 -M *
KENDALL R.S. 7740 .0 .0 100 20.1 22.9 88
LOOMIS PARK 8240 .0 .0 100 25.5 27.6 92
NEW FORK LAKE 8340 .2 .0 16.6 20.8 80
SNIDER BASIN 8060 .1 .0 20.3 23.9 85
SPRING CREEK DIVIDE 9000 -M .0 * 33.8 38.0 89
TRIPLE PEAK 8500 -M .0 * 41.4 37.1 112
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Basin wide percent of average * 89
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 16.5 20.9 79
HEWINTA 9519 -M .0 * 29.4 26.4 111
HICKERSON PARK 9145 .0 .0 100 21.7 18.3 119
HOLE-IN-ROCK 9150 .0 .0 100 19.7 18.2 108
INDIAN CREEK 9425 .4 .0 32.4 36.9 88
KELLEY R.S. 8180 .3 .0 26.0 30.3 86
STEEL CREEK PARK 10200 .8 .0 31.8 29.4 108
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Basin wide percent of average * 98
UPPER BEAR RIVER
BUG LAKE 7950 .1 .0 25.5 29.1 88
HAYDEN FORK 9212 .0 .0 100 34.2 34.1 100
KELLEY R.S. 8180 .3 .0 26.0 30.3 86
LILY LAKE 9156 .1 .0 27.6 29.4 94
MONTE CRISTO 8960 .0 .0 100 35.0 38.6 91
SALT RIVER SUMMIT 7760 -M .0 * -M 28.4 *
TRIAL LAKE 9992 -M .0 * 36.1 40.0 90
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Basin wide percent of average * 92
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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 1961-90.
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.