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 WEDNESDAY: JULY 1 , 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 30.1 29.0 104
COTTONWOOD CREEK 7670 .0 .0 100 46.7 37.8 124
GRAND TARGHEE 9260 11.3 -M * 50.9 -M *
GRANITE CREEK 6770 .2 .0 31.2 26.6 117
GRASSY LAKE 7265 .0 .0 100 48.5 48.0 101
GROS VENTRE SUMMIT 8750 .2 .0 23.9 19.7 121
GUNSIGHT PASS 9820 -M -M * 26.9 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 48.3 48.0 101
PHILLIPS BENCH 8200 .0 .0 100 42.1 38.9 108
SALT RIVER SUMMIT 7760 .0 .0 100 27.0 25.5 106
SNAKE RIVER STATION 6920 .0 .0 100 33.9 30.6 111
SPRING CREEK DIVIDE 9000 .0 .0 100 39.6 34.7 114
THUMB DIVIDE 7980 .1 .0 32.3 26.8 121
TOGWOTEE PASS 9580 3.4 3.7 92 43.8 34.9 126
TWO OCEAN PLATEAU 9240 5.0 6.8 74 44.8 39.1 115
WILLOW CREEK 8380 .0 .0 100 58.1 45.1 129
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Basin wide percent of average 80 114
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .7 2.5 28 32.7 29.7 110
BLACK BEAR 8170 .1 2.8 4 50.8 53.4 95
CANYON 7870 .0 .0 100 26.4 22.6 117
FISHER CREEK 9100 -M 6.8 * 50.0 50.4 99
MADISON PLATEAU 7750 .1 .0 35.9 36.8 98
NORTHEAST ENTRANCE 7350 .1 .0 22.1 20.1 110
PARKER PEAK 9400 .1 2.3 4 29.1 26.0 112
SYLVAN LAKE 8420 .0 .0 100 36.2 32.0 113
THUMB DIVIDE 7980 .1 .0 32.3 26.8 121
TWO OCEAN PLATEAU 9240 5.0 6.8 74 44.8 39.1 115
WHISKEY CREEK 6800 .1 .0 29.6 29.9 99
WHITE MILL 8700 .0 1.6 0 36.6 38.4 95
WOLVERINE 7650 .0 .0 100 21.0 20.4 103
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Basin wide percent of average 37 105
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 29.1 24.7 118
COLD SPRINGS 9630 .1 .0 20.0 19.4 103
DEER PARK 9700 .0 .0 100 30.9 33.3 93
HOBBS PARK 10100 .0 .9 0 26.2 23.3 112
LITTLE WARM 9370 .0 .0 100 25.9 22.1 117
SOUTH PASS 9040 .1 .0 26.4 28.0 94
ST. LAWRENCE ALT 8620 .1 .0 18.7 17.5 107
TOGWOTEE PASS 9580 3.4 3.7 92 43.8 34.9 126
TOWNSEND CREEK 8700 .0 .0 100 22.6 20.9 108
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Basin wide percent of average 74 109
BIGHORN BASIN
BALD MTN. 9380 -M 1.1 * 26.3 28.2 93
BEAR TRAP MEADOW 8200 -M .0 * -M 16.9 *
BLACKWATER 9780 1.5 6.0 25 36.5 32.2 113
BONE SPRINGS DIV 9350 .0 .0 100 24.0 25.5 94
EVENING STAR 9200 -M 5.2 * -M 37.8 *
GRAVE SPRINGS 8550 .0 .0 100 14.8 18.6 80
KIRWIN 9550 .0 .0 100 25.6 20.3 126
MARQUETTE 8760 .0 .0 100 17.4 21.1 82
MIDDLE POWDER 7760 .0 .0 100 17.1 21.7 79
OWL CREEK 8975 .0 .0 100 16.7 13.5 124
POWDER RIVER PASS 9480 .0 .0 100 24.8 22.4 111
SHELL CREEK 9580 .0 .1 0 25.8 23.8 108
SYLVAN LAKE 8420 .0 .0 100 36.2 32.0 113
SYLVAN ROAD 7120 .0 .0 100 30.1 25.8 117
TIMBER CREEK 7950 .1 .0 17.3 16.7 104
YOUNTS PEAK 8350 .0 .0 100 25.9 24.6 105
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Basin wide percent of average 25 104
SHOSHONE RIVER
BLACKWATER 9780 1.5 6.0 25 36.5 32.2 113
EVENING STAR 9200 -M 5.2 * -M 37.8 *
KIRWIN 9550 .0 .0 100 25.6 20.3 126
MARQUETTE 8760 .0 .0 100 17.4 21.1 82
SYLVAN LAKE 8420 .0 .0 100 36.2 32.0 113
SYLVAN ROAD 7120 .0 .0 100 30.1 25.8 117
YOUNTS PEAK 8350 .0 .0 100 25.9 24.6 105
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Basin wide percent of average 25 110
POWDER-TONGUE
BEAR TRAP MEADOW 8200 -M .0 * -M 16.9 *
BIG GOOSE 7990 .0 .0 100 19.8 18.0 110
BONE SPRINGS DIV 9350 .0 .0 100 24.0 25.5 94
BURGESS JUNCTION 7880 .0 .0 100 20.0 21.2 94
CLOUD PEAK RESERVOIR 9860 .0 .0 100 26.2 24.9 105
DOME LAKE 8880 .0 .0 100 24.2 23.2 104
GRAVE SPRINGS 8550 .0 .0 100 14.8 18.6 80
HANSEN SAWMILL 8360 .0 .0 100 17.4 17.0 102
MIDDLE POWDER 7760 .0 .0 100 17.1 21.7 79
POWDER RIVER PASS 9480 .0 .0 100 24.8 22.4 111
SUCKER CREEK 8880 .0 .0 100 26.5 24.5 108
TIE CREEK 6870 .0 .0 100 23.1 20.1 115
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Basin wide percent of average * 100
BELLE FOURCHE
BLIND PARK 6890 .2 .0 22.2 21.0 106
COLE CANYON 5910 .1 .0 19.6 16.5 119
NORTH RAPID CREEK 6130 .1 .0 18.7 17.9 104
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Basin wide percent of average * 109
UPPER N. PLATTE RIVER
COLUMBINE 9160 -M .0 * 36.4 33.7 108
DIVIDE PEAK 8880 .0 .0 100 38.5 29.0 133
ELK RIVER 8700 .1 .0 31.1 27.6 113
JOE WRIGHT 10120 .1 1.5 7 -M 37.3 *
NORTH FRENCH CREEK 10130 -M 3.1 * -M 36.6 *
OLD BATTLE 10000 .0 2.1 0 53.4 46.1 116
SAGE CREEK BASIN 7850 .0 .0 100 23.1 16.8 138
SOUTH BRUSH CREEK 8440 .0 .0 100 26.2 25.6 102
TOWER 10500 .1 9.7 1 57.2 52.3 109
WEBBER SPRINGS 9250 .0 .0 100 41.0 36.4 113
WILLOW CREEK PASS 9540 .0 .0 100 -M 21.0 *
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Basin wide percent of average 2 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .6 0 33.4 33.2 101
CASPER MTN. 7900 .0 .1 0 23.9 26.2 91
DEADMAN HILL 10220 .1 .5 20 24.8 26.4 94
DEER PARK 9700 .0 .0 100 30.9 33.3 93
LAPRELE CREEK 8375 .0 .0 100 20.8 22.0 95
RENO HILL 8400 -M .0 * 26.1 26.6 98
ROACH 9700 .0 .0 100 29.1 28.4 102
SAND LAKE 10050 .0 3.6 0 43.7 36.7 119
SOUTH PASS 9040 .1 .0 26.4 28.0 94
WINDY PEAK 7900 .4 .0 19.4 19.1 102
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Basin wide percent of average 2 99
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 27.7 22.2 125
DIVIDE PEAK 8880 .0 .0 100 38.5 29.0 133
OLD BATTLE 10000 .0 2.1 0 53.4 46.1 116
SANDSTONE RS 8150 -M .0 * 30.2 26.3 115
WHISKEY PARK 8950 -M .0 * 46.8 39.8 118
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Basin wide percent of average 0 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 25.2 20.4 124
BLIND BULL SUM 8650 .0 .0 100 31.7 29.8 106
EAST RIM DIVIDE 7930 .0 .0 100 20.8 17.5 119
ELKHART PARK G.S. 9400 -M .0 * 26.6 21.0 127
GROS VENTRE SUMMIT 8750 .2 .0 23.9 19.7 121
GUNSIGHT PASS 9820 -M -M * 26.9 -M *
KENDALL R.S. 7740 .1 .0 23.0 20.2 114
LOOMIS PARK 8240 .1 .0 29.8 23.9 125
NEW FORK LAKE 8340 -M .0 * 20.7 17.6 118
SNIDER BASIN 8060 .0 .0 100 23.0 21.6 106
SPRING CREEK DIVIDE 9000 .0 .0 100 39.6 34.7 114
TRIPLE PEAK 8500 .1 .0 39.7 33.9 117
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Basin wide percent of average * 117
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 22.0 18.4 120
HEWINTA 9519 .0 .0 100 20.7 21.8 95
HICKERSON PARK 9145 .0 .0 100 18.1 14.1 128
HOLE-IN-ROCK 9150 .0 .0 100 16.3 13.9 117
INDIAN CREEK 9425 .0 .0 100 33.2 34.1 97
KELLEY R.S. 8180 .0 .0 100 29.3 27.7 106
STEEL CREEK PARK 10200 .0 .6 0 25.3 24.9 102
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Basin wide percent of average 0 106
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 26.0 26.5 98
HAYDEN FORK 9212 .0 .0 100 32.2 30.2 107
KELLEY R.S. 8180 .0 .0 100 29.3 27.7 106
LILY LAKE 9156 .0 .0 100 26.5 25.7 103
MONTE CRISTO 8960 .0 .0 100 37.9 35.7 106
SALT RIVER SUMMIT 7760 .0 .0 100 27.0 25.5 106
TRIAL LAKE 9992 .0 .7 0 36.0 35.3 102
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Basin wide percent of average 0 104
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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.