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 FRIDAY: JULY 3 , 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 47.1 37.9 124
GRAND TARGHEE 9260 6.8 -M * 50.9 -M *
GRANITE CREEK 6770 .2 .0 31.4 26.7 118
GRASSY LAKE 7265 .0 .0 100 -M 48.1 *
GROS VENTRE SUMMIT 8750 .2 .0 24.2 19.8 122
GUNSIGHT PASS 9820 -M -M * 27.9 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 48.2 48.1 100
PHILLIPS BENCH 8200 .0 .0 100 42.4 39.0 109
SALT RIVER SUMMIT 7760 .0 .0 100 27.0 25.6 105
SNAKE RIVER STATION 6920 .0 .0 100 34.0 30.7 111
SPRING CREEK DIVIDE 9000 .0 .0 100 39.7 34.8 114
THUMB DIVIDE 7980 .1 .0 32.3 26.9 120
TOGWOTEE PASS 9580 .7 2.2 32 43.8 35.0 125
TWO OCEAN PLATEAU 9240 1.3 5.3 25 44.9 39.3 114
WILLOW CREEK 8380 .0 .0 100 58.4 45.3 129
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Basin wide percent of average 27 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 -M 1.8 * 33.3 29.9 111
BLACK BEAR 8170 .1 2.1 5 50.8 53.6 95
CANYON 7870 .0 .0 100 26.5 22.8 116
FISHER CREEK 9100 -M 4.8 * 50.2 50.6 99
MADISON PLATEAU 7750 .1 .0 36.0 37.0 97
NORTHEAST ENTRANCE 7350 .1 .0 22.3 20.3 110
PARKER PEAK 9400 .1 1.8 6 29.2 26.2 111
SYLVAN LAKE 8420 .0 .0 100 36.3 32.2 113
THUMB DIVIDE 7980 .1 .0 32.3 26.9 120
TWO OCEAN PLATEAU 9240 1.3 5.3 25 44.9 39.3 114
WHISKEY CREEK 6800 .1 .0 29.8 30.1 99
WHITE MILL 8700 .0 1.0 0 37.0 38.6 96
WOLVERINE 7650 .0 .0 100 21.2 20.5 103
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Basin wide percent of average 15 105
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 29.3 24.8 118
COLD SPRINGS 9630 .1 .0 20.3 19.4 105
DEER PARK 9700 .0 .0 100 30.9 33.4 93
HOBBS PARK 10100 .0 .7 0 26.3 23.5 112
LITTLE WARM 9370 .0 .0 100 26.0 22.2 117
SOUTH PASS 9040 .2 .0 26.4 28.1 94
ST. LAWRENCE ALT 8620 .1 .0 18.8 17.5 107
TOGWOTEE PASS 9580 .7 2.2 32 43.8 35.0 125
TOWNSEND CREEK 8700 .0 .0 100 22.5 21.0 107
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Basin wide percent of average 24 109
BIGHORN BASIN
BALD MTN. 9380 -M .8 * 26.4 28.4 93
BEAR TRAP MEADOW 8200 .0 .0 100 17.1 17.0 101
BLACKWATER 9780 .5 4.6 11 36.6 32.4 113
BONE SPRINGS DIV 9350 .0 .0 100 24.2 25.7 94
EVENING STAR 9200 -M 4.1 * -M 38.0 *
GRAVE SPRINGS 8550 .0 .0 100 15.8 18.8 84
KIRWIN 9550 .1 .0 25.7 20.5 125
MARQUETTE 8760 .0 .0 100 17.6 21.3 83
MIDDLE POWDER 7760 .0 .0 100 18.2 21.9 83
OWL CREEK 8975 .1 .0 17.1 13.5 127
POWDER RIVER PASS 9480 .0 .0 100 25.0 22.6 111
SHELL CREEK 9580 .0 .0 100 25.8 24.0 108
SYLVAN LAKE 8420 .0 .0 100 36.3 32.2 113
SYLVAN ROAD 7120 .0 .0 100 30.1 25.9 116
TIMBER CREEK 7950 .0 .0 100 17.4 16.7 104
YOUNTS PEAK 8350 .0 .0 100 26.1 24.8 105
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Basin wide percent of average 11 104
SHOSHONE RIVER
BLACKWATER 9780 .5 4.6 11 36.6 32.4 113
EVENING STAR 9200 -M 4.1 * -M 38.0 *
KIRWIN 9550 .1 .0 25.7 20.5 125
MARQUETTE 8760 .0 .0 100 17.6 21.3 83
SYLVAN LAKE 8420 .0 .0 100 36.3 32.2 113
SYLVAN ROAD 7120 .0 .0 100 30.1 25.9 116
YOUNTS PEAK 8350 .0 .0 100 26.1 24.8 105
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Basin wide percent of average 11 110
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 17.1 17.0 101
BIG GOOSE 7990 .1 .0 19.9 18.2 109
BONE SPRINGS DIV 9350 .0 .0 100 24.2 25.7 94
BURGESS JUNCTION 7880 .0 .0 100 20.2 21.4 94
CLOUD PEAK RESERVOIR 9860 .0 .0 100 26.8 25.1 107
DOME LAKE 8880 .0 .0 100 24.1 23.4 103
GRAVE SPRINGS 8550 .0 .0 100 15.8 18.8 84
HANSEN SAWMILL 8360 .0 .0 100 17.2 17.1 101
MIDDLE POWDER 7760 .0 .0 100 18.2 21.9 83
POWDER RIVER PASS 9480 .0 .0 100 25.0 22.6 111
SUCKER CREEK 8880 .0 .0 100 26.6 24.7 108
TIE CREEK 6870 .0 .0 100 23.6 20.2 117
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Basin wide percent of average * 101
BELLE FOURCHE
BLIND PARK 6890 .3 .0 22.5 21.2 106
COLE CANYON 5910 .1 .0 19.8 16.7 119
NORTH RAPID CREEK 6130 .1 .0 19.3 18.1 107
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Basin wide percent of average * 110
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 36.8 33.7 109
DIVIDE PEAK 8880 .0 .0 100 38.6 29.1 133
ELK RIVER 8700 .2 .0 31.0 27.7 112
JOE WRIGHT 10120 .2 1.1 18 -M 37.4 *
NORTH FRENCH CREEK 10130 -M 2.4 * -M 36.7 *
OLD BATTLE 10000 .0 1.4 0 53.3 46.2 115
SAGE CREEK BASIN 7850 .0 .0 100 23.3 16.9 138
SOUTH BRUSH CREEK 8440 .0 .0 100 26.2 25.7 102
TOWER 10500 .1 8.0 1 58.5 52.4 112
WEBBER SPRINGS 9250 -M .0 * 40.9 36.5 112
WILLOW CREEK PASS 9540 .0 .0 100 -M 21.1 *
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Basin wide percent of average 3 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .3 0 33.4 33.3 100
CASPER MTN. 7900 .0 .1 0 24.3 26.3 92
DEADMAN HILL 10220 .2 .3 67 24.6 26.5 93
DEER PARK 9700 .0 .0 100 30.9 33.4 93
LAPRELE CREEK 8375 .0 .0 100 21.1 22.1 95
RENO HILL 8400 -M .0 * 26.5 26.7 99
ROACH 9700 .1 .0 29.3 28.4 103
SAND LAKE 10050 .0 2.8 0 43.8 36.8 119
SOUTH PASS 9040 .2 .0 26.4 28.1 94
WINDY PEAK 7900 .4 .0 19.4 19.2 101
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Basin wide percent of average 6 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 27.9 22.3 125
DIVIDE PEAK 8880 .0 .0 100 38.6 29.1 133
OLD BATTLE 10000 .0 1.4 0 53.3 46.2 115
SANDSTONE RS 8150 -M .0 * 30.3 26.4 115
WHISKEY PARK 8950 .0 .0 100 46.9 39.9 118
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Basin wide percent of average 0 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 25.6 20.5 125
BLIND BULL SUM 8650 .0 .0 100 32.0 29.9 107
EAST RIM DIVIDE 7930 .0 .0 100 20.9 17.6 119
ELKHART PARK G.S. 9400 -M .0 * 26.7 21.0 127
GROS VENTRE SUMMIT 8750 .2 .0 24.2 19.8 122
GUNSIGHT PASS 9820 -M -M * 27.9 -M *
KENDALL R.S. 7740 .0 .0 100 22.8 20.2 113
LOOMIS PARK 8240 .1 .0 30.0 24.0 125
NEW FORK LAKE 8340 1.7 .0 20.9 17.7 118
SNIDER BASIN 8060 .0 .0 100 23.1 21.7 106
SPRING CREEK DIVIDE 9000 .0 .0 100 39.7 34.8 114
TRIPLE PEAK 8500 .1 .0 39.9 34.0 117
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Basin wide percent of average * 117
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 22.1 18.5 119
HEWINTA 9519 .1 .0 21.5 21.9 98
HICKERSON PARK 9145 .0 .0 100 19.5 14.2 137
HOLE-IN-ROCK 9150 .0 .0 100 17.0 14.0 121
INDIAN CREEK 9425 .0 .0 100 33.3 34.2 97
KELLEY R.S. 8180 .0 .0 100 29.3 27.8 105
STEEL CREEK PARK 10200 .1 .4 25 25.9 25.0 104
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Basin wide percent of average 25 108
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 26.9 26.6 101
HAYDEN FORK 9212 .0 .0 100 32.8 30.3 108
KELLEY R.S. 8180 .0 .0 100 29.3 27.8 105
LILY LAKE 9156 .1 .0 27.0 25.8 105
MONTE CRISTO 8960 .0 .0 100 38.3 35.7 107
SALT RIVER SUMMIT 7760 .0 .0 100 27.0 25.6 105
TRIAL LAKE 9992 .2 .3 67 37.4 35.4 106
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Basin wide percent of average 67 106
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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.