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 SATURDAY: JULY 18 , 2009
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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 30.6 29.7 103
COTTONWOOD CREEK 7670 .0 .0 100 47.7 38.5 124
GRAND TARGHEE 9260 .0 -M * 50.6 -M *
GRANITE CREEK 6770 -M .0 * 31.4 27.3 115
GRASSY LAKE 7265 .0 .0 100 50.6 49.0 103
GROS VENTRE SUMMIT 8750 .0 .0 100 24.4 20.5 119
GUNSIGHT PASS 9820 .0 -M * 28.7 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 49.0 48.9 100
PHILLIPS BENCH 8200 .0 .0 100 42.8 39.6 108
SALT RIVER SUMMIT 7760 .0 .0 100 27.6 26.1 106
SNAKE RIVER STATION 6920 -M .0 * 35.0 31.5 111
SPRING CREEK DIVIDE 9000 .0 .0 100 39.9 35.4 113
THUMB DIVIDE 7980 -M .0 * 32.7 27.5 119
TOGWOTEE PASS 9580 .0 .0 100 44.1 35.8 123
TWO OCEAN PLATEAU 9240 .0 .0 100 45.9 40.3 114
WILLOW CREEK 8380 .0 .0 100 58.6 46.1 127
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Basin wide percent of average * 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100 34.5 30.9 112
BLACK BEAR 8170 .0 .0 100 51.1 54.5 94
CANYON 7870 .0 .0 100 26.9 23.6 114
FISHER CREEK 9100 -M .0 * 51.1 52.0 98
MADISON PLATEAU 7750 .0 .0 100 37.0 37.8 98
NORTHEAST ENTRANCE 7350 .0 .0 100 23.2 21.3 109
PARKER PEAK 9400 .1 .5 20 30.2 27.0 112
SYLVAN LAKE 8420 .0 .0 100 37.1 33.1 112
THUMB DIVIDE 7980 -M .0 * 32.7 27.5 119
TWO OCEAN PLATEAU 9240 .0 .0 100 45.9 40.3 114
WHISKEY CREEK 6800 .1 .0 30.4 30.9 98
WHITE MILL 8700 .0 .0 100 38.2 39.8 96
WOLVERINE 7650 .0 .0 100 21.7 21.4 101
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Basin wide percent of average 20 105
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 29.2 25.5 115
COLD SPRINGS 9630 .0 .0 100 20.4 20.0 102
DEER PARK 9700 .0 .0 100 31.1 34.1 91
HOBBS PARK 10100 .0 .0 100 26.4 24.2 109
LITTLE WARM 9370 .0 .0 100 26.3 23.1 114
SOUTH PASS 9040 .1 .0 26.9 28.7 94
ST. LAWRENCE ALT 8620 .0 .0 100 19.1 18.1 106
TOGWOTEE PASS 9580 .0 .0 100 44.1 35.8 123
TOWNSEND CREEK 8700 .0 .0 100 22.4 21.7 103
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Basin wide percent of average * 106
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100 26.4 29.4 90
BEAR TRAP MEADOW 8200 .0 .0 100 17.6 17.8 99
BLACKWATER 9780 .0 .4 0 37.3 33.4 112
BONE SPRINGS DIV 9350 .0 .0 100 25.3 26.7 95
EVENING STAR 9200 -M .6 * -M 39.2 *
GRAVE SPRINGS 8550 .0 .0 100 16.0 19.6 82
KIRWIN 9550 .0 .0 100 26.6 21.6 123
MARQUETTE 8760 .0 .0 100 18.0 22.1 81
MIDDLE POWDER 7760 .0 .0 100 18.5 22.6 82
OWL CREEK 8975 .0 .0 100 18.7 14.2 132
POWDER RIVER PASS 9480 .0 .0 100 25.9 23.3 111
SHELL CREEK 9580 .0 .0 100 26.3 24.9 106
SYLVAN LAKE 8420 .0 .0 100 37.1 33.1 112
SYLVAN ROAD 7120 .0 .0 100 30.6 26.6 115
TIMBER CREEK 7950 .0 .0 100 18.0 17.5 103
YOUNTS PEAK 8350 .0 .0 100 26.5 25.9 102
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Basin wide percent of average 0 103
SHOSHONE RIVER
BLACKWATER 9780 .0 .4 0 37.3 33.4 112
EVENING STAR 9200 -M .6 * -M 39.2 *
KIRWIN 9550 .0 .0 100 26.6 21.6 123
MARQUETTE 8760 .0 .0 100 18.0 22.1 81
SYLVAN LAKE 8420 .0 .0 100 37.1 33.1 112
SYLVAN ROAD 7120 .0 .0 100 30.6 26.6 115
YOUNTS PEAK 8350 .0 .0 100 26.5 25.9 102
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Basin wide percent of average 0 108
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 17.6 17.8 99
BIG GOOSE 7990 .0 .0 100 20.2 19.0 106
BONE SPRINGS DIV 9350 .0 .0 100 25.3 26.7 95
BURGESS JUNCTION 7880 .0 .0 100 21.6 22.4 96
CLOUD PEAK RESERVOIR 9860 .0 .0 100 27.7 26.1 106
DOME LAKE 8880 .0 .0 100 24.5 24.2 101
GRAVE SPRINGS 8550 .0 .0 100 16.0 19.6 82
HANSEN SAWMILL 8360 .0 .0 100 18.1 18.0 101
MIDDLE POWDER 7760 .0 .0 100 18.5 22.6 82
POWDER RIVER PASS 9480 .0 .0 100 25.9 23.3 111
SUCKER CREEK 8880 .0 .0 100 28.1 25.6 110
TIE CREEK 6870 .0 .0 100 24.8 20.9 119
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Basin wide percent of average * 101
BELLE FOURCHE
BLIND PARK 6890 .1 .0 24.9 22.5 111
COLE CANYON 5910 .0 .0 100 22.6 17.9 126
NORTH RAPID CREEK 6130 .1 .0 19.9 20.1 99
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Basin wide percent of average * 111
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100 37.4 34.4 109
DIVIDE PEAK 8880 -M .0 * 39.1 29.6 132
ELK RIVER 8700 .2 .0 31.6 28.3 112
JOE WRIGHT 10120 .1 .0 41.8 38.5 109
NORTH FRENCH CREEK 10130 -M .0 * -M 37.8 *
OLD BATTLE 10000 .0 .0 100 53.2 46.9 113
SAGE CREEK BASIN 7850 .0 .0 100 23.3 17.2 135
SOUTH BRUSH CREEK 8440 .0 .0 100 26.3 26.6 99
TOWER 10500 .0 .8 0 59.2 53.3 111
WEBBER SPRINGS 9250 .0 .0 100 41.0 37.1 111
WILLOW CREEK PASS 9540 .1 .0 22.3 21.9 102
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Basin wide percent of average 0 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M .0 * 33.4 34.2 98
CASPER MTN. 7900 -M .0 * 25.0 26.9 93
DEADMAN HILL 10220 -M .0 * 27.2 27.1 100
DEER PARK 9700 .0 .0 100 31.1 34.1 91
LAPRELE CREEK 8375 -M .0 * -M 22.9 *
RENO HILL 8400 .0 .0 100 26.9 27.3 99
ROACH 9700 .0 .0 100 30.7 29.2 105
SAND LAKE 10050 .0 .0 100 43.8 37.6 116
SOUTH PASS 9040 .1 .0 26.9 28.7 94
WINDY PEAK 7900 -M .0 * -M 19.9 *
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Basin wide percent of average * 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 28.1 22.7 124
DIVIDE PEAK 8880 -M .0 * 39.1 29.6 132
OLD BATTLE 10000 .0 .0 100 53.2 46.9 113
SANDSTONE RS 8150 -M .0 * 30.6 27.0 113
WHISKEY PARK 8950 .0 .0 100 47.1 40.7 116
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Basin wide percent of average * 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 25.7 21.1 122
BLIND BULL SUM 8650 .0 .0 100 32.1 30.5 105
EAST RIM DIVIDE 7930 .0 .0 100 21.0 18.0 117
ELKHART PARK G.S. 9400 .0 .0 100 26.8 21.7 124
GROS VENTRE SUMMIT 8750 .0 .0 100 24.4 20.5 119
GUNSIGHT PASS 9820 .0 -M * 28.7 -M *
KENDALL R.S. 7740 .0 .0 100 23.2 20.7 112
LOOMIS PARK 8240 -M .0 * 29.8 24.6 121
NEW FORK LAKE 8340 .0 .0 100 20.5 18.3 112
SNIDER BASIN 8060 .0 .0 100 23.1 22.1 105
SPRING CREEK DIVIDE 9000 .0 .0 100 39.9 35.4 113
TRIPLE PEAK 8500 .1 .0 40.8 34.6 118
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Basin wide percent of average * 115
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 22.2 19.0 117
HEWINTA 9519 .0 .0 100 21.6 22.9 94
HICKERSON PARK 9145 .0 .0 100 20.7 14.9 139
HOLE-IN-ROCK 9150 .0 .0 100 18.0 14.7 122
INDIAN CREEK 9425 .0 .0 100 33.4 34.6 97
KELLEY R.S. 8180 .0 .0 100 29.5 28.3 104
STEEL CREEK PARK 10200 .0 .0 100 25.9 25.9 100
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Basin wide percent of average * 107
UPPER BEAR RIVER
BUG LAKE 7950 -M .0 * 26.9 27.0 100
HAYDEN FORK 9212 .0 .0 100 32.7 30.9 106
KELLEY R.S. 8180 .0 .0 100 29.5 28.3 104
LILY LAKE 9156 .0 .0 100 27.0 26.3 103
MONTE CRISTO 8960 -M .0 * 38.5 36.2 106
SALT RIVER SUMMIT 7760 .0 .0 100 27.6 26.1 106
TRIAL LAKE 9992 .0 .0 100 37.3 36.1 103
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Basin wide percent of average * 104
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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.