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: JULY 22 , 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 -M .0 * 35.1 29.9 117
COTTONWOOD CREEK 7670 .0 .0 100 -M 38.7 *
GRAND TARGHEE 9260 .0 -M * 49.1 -M *
GRANITE CREEK 6770 -M .0 * 32.3 27.5 117
GRASSY LAKE 7265 .1 .0 57.5 49.2 117
GROS VENTRE SUMMIT 8750 .2 .0 20.0 20.8 96
GUNSIGHT PASS 9820 -M -M * 21.4 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 49.1 49.2 100
PHILLIPS BENCH 8200 .0 .0 100 45.2 39.8 114
SALT RIVER SUMMIT 7760 .0 .0 100 22.2 26.3 84
SNAKE RIVER STATION 6920 .0 .0 100 36.8 31.7 116
SPRING CREEK DIVIDE 9000 -M .0 * 31.8 35.6 89
THUMB DIVIDE 7980 -M .0 * 29.7 27.6 108
TOGWOTEE PASS 9580 .1 .0 41.5 36.2 115
TWO OCEAN PLATEAU 9240 -M .0 * 45.0 40.6 111
WILLOW CREEK 8380 .0 .0 100 53.6 46.5 115
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Basin wide percent of average * 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100 34.8 31.3 111
BLACK BEAR 8170 .0 .0 100 56.9 54.8 104
CANYON 7870 .0 .0 100 28.9 23.9 121
FISHER CREEK 9100 .4 .0 53.7 52.4 102
MADISON PLATEAU 7750 .1 .0 44.9 38.0 118
NORTHEAST ENTRANCE 7350 .3 .0 22.5 21.6 104
PARKER PEAK 9400 .1 .1 100 40.6 27.3 149
SYLVAN LAKE 8420 .0 .0 100 40.8 33.4 122
THUMB DIVIDE 7980 -M .0 * 29.7 27.6 108
TWO OCEAN PLATEAU 9240 -M .0 * 45.0 40.6 111
WHISKEY CREEK 6800 .0 .0 100 -M 31.1 *
WHITE MILL 8700 .2 .0 39.3 40.1 98
WOLVERINE 7650 .1 .0 23.0 21.7 106
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Basin wide percent of average 100* 111
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 26.4 25.7 103
COLD SPRINGS 9630 .1 .0 18.5 20.3 91
DEER PARK 9700 .0 .0 100 31.2 34.3 91
HOBBS PARK 10100 .0 .0 100 25.8 24.5 105
LITTLE WARM 9370 .0 .0 100 23.3 23.4 100
SOUTH PASS 9040 .1 .0 27.8 28.9 96
ST. LAWRENCE ALT 8620 .1 .0 17.1 18.4 93
TOGWOTEE PASS 9580 .1 .0 41.5 36.2 115
TOWNSEND CREEK 8700 .0 .0 100 22.2 21.9 101
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Basin wide percent of average * 100
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100 29.3 29.8 98
BEAR TRAP MEADOW 8200 .0 .0 100 21.9 18.0 122
BLACKWATER 9780 .0 .0 100 38.6 33.8 114
BONE SPRINGS DIV 9350 .0 .0 100 30.8 27.0 114
EVENING STAR 9200 .1 .0 51.6 39.6 130
GRAVE SPRINGS 8550 .0 .0 100 19.8 19.9 99
KIRWIN 9550 .1 .0 23.7 22.0 108
MARQUETTE 8760 .1 .0 23.5 22.5 104
MIDDLE POWDER 7760 .1 .0 20.3 22.9 89
OWL CREEK 8975 .1 .0 14.3 14.6 98
POWDER RIVER PASS 9480 .0 .0 100 27.7 23.6 117
SHELL CREEK 9580 .1 .0 28.2 25.2 112
SYLVAN LAKE 8420 .0 .0 100 40.8 33.4 122
SYLVAN ROAD 7120 .0 .0 100 31.6 26.8 118
TIMBER CREEK 7950 .2 .0 20.5 17.8 115
YOUNTS PEAK 8350 .2 .0 26.2 26.3 100
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Basin wide percent of average * 111
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100 38.6 33.8 114
EVENING STAR 9200 .1 .0 51.6 39.6 130
KIRWIN 9550 .1 .0 23.7 22.0 108
MARQUETTE 8760 .1 .0 23.5 22.5 104
SYLVAN LAKE 8420 .0 .0 100 40.8 33.4 122
SYLVAN ROAD 7120 .0 .0 100 31.6 26.8 118
YOUNTS PEAK 8350 .2 .0 26.2 26.3 100
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Basin wide percent of average * 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 21.9 18.0 122
BIG GOOSE 7990 .3 .0 24.4 19.4 126
BONE SPRINGS DIV 9350 .0 .0 100 30.8 27.0 114
BURGESS JUNCTION 7880 .0 .0 100 27.6 22.8 121
CLOUD PEAK RESERVOIR 9860 .0 .0 100 32.8 26.5 124
DOME LAKE 8880 .0 .0 100 29.4 24.5 120
GRAVE SPRINGS 8550 .0 .0 100 19.8 19.9 99
HANSEN SAWMILL 8360 .0 .0 100 25.1 18.3 137
MIDDLE POWDER 7760 .1 .0 20.3 22.9 89
POWDER RIVER PASS 9480 .0 .0 100 27.7 23.6 117
SUCKER CREEK 8880 .0 .0 100 32.4 26.0 125
TIE CREEK 6870 .0 .0 100 25.1 21.0 120
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Basin wide percent of average * 118
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 26.7 23.0 116
COLE CANYON 5910 .3 .0 25.7 18.4 140
NORTH RAPID CREEK 6130 .0 .0 100 31.9 20.9 153
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Basin wide percent of average * 135
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 37.6 34.7 108
DIVIDE PEAK 8880 .0 .0 100 32.1 29.9 107
ELK RIVER 8700 .3 .0 30.4 28.6 106
JOE WRIGHT 10120 -M .0 * 41.0 38.9 105
NORTH FRENCH CREEK 10130 -M .0 * 41.6 38.2 109
OLD BATTLE 10000 -M .0 * 50.9 47.2 108
SAGE CREEK BASIN 7850 .0 .0 100 22.9 17.3 132
SOUTH BRUSH CREEK 8440 .0 .0 100 23.4 26.9 87
TOWER 10500 .0 .0 100 54.0 53.6 101
WEBBER SPRINGS 9250 .0 .0 100 39.8 37.4 106
WILLOW CREEK PASS 9540 .4 .0 24.1 22.2 109
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Basin wide percent of average * 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100 31.8 34.5 92
CASPER MTN. 7900 .0 .0 100 30.4 27.1 112
DEADMAN HILL 10220 -M .0 * 28.6 27.4 104
DEER PARK 9700 .0 .0 100 31.2 34.3 91
LAPRELE CREEK 8375 -M .0 * -M 23.2 *
RENO HILL 8400 .0 .0 100 33.0 27.5 120
ROACH 9700 .0 .0 100 32.2 29.4 110
SAND LAKE 10050 -M .0 * 43.4 37.9 115
SOUTH PASS 9040 .1 .0 27.8 28.9 96
WINDY PEAK 7900 .4 .0 19.6 20.3 97
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Basin wide percent of average * 104
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 23.1 22.8 101
DIVIDE PEAK 8880 .0 .0 100 32.1 29.9 107
OLD BATTLE 10000 -M .0 * 50.9 47.2 108
SANDSTONE RS 8150 -M .0 * 28.4 27.2 104
WHISKEY PARK 8950 -M .0 * -M 41.0 *
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Basin wide percent of average * 106
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 19.7 21.3 92
BLIND BULL SUM 8650 .0 .0 100 25.4 30.7 83
EAST RIM DIVIDE 7930 .0 .0 100 15.7 18.2 86
ELKHART PARK G.S. 9400 .1 .0 17.2 21.9 79
GROS VENTRE SUMMIT 8750 .2 .0 20.0 20.8 96
GUNSIGHT PASS 9820 -M -M * 21.4 -M *
KENDALL R.S. 7740 .1 .0 18.6 20.9 89
LOOMIS PARK 8240 -M .0 * 23.6 24.8 95
NEW FORK LAKE 8340 .2 .0 14.6 18.5 79
SNIDER BASIN 8060 .0 .0 100 19.8 22.2 89
SPRING CREEK DIVIDE 9000 -M .0 * 31.8 35.6 89
TRIPLE PEAK 8500 .1 .0 39.5 34.8 114
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Basin wide percent of average * 91
LOWER GREEN RIVER
HAMS FORK 7840 -M .0 * 15.8 19.2 82
HEWINTA 9519 -M .0 * 24.1 23.3 103
HICKERSON PARK 9145 .0 .0 100 15.9 15.2 105
HOLE-IN-ROCK 9150 .0 .0 100 16.0 15.0 107
INDIAN CREEK 9425 .1 .0 31.2 34.8 90
KELLEY R.S. 8180 -M .0 * 24.5 28.4 86
STEEL CREEK PARK 10200 .8 .0 26.8 26.2 102
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Basin wide percent of average * 95
UPPER BEAR RIVER
BUG LAKE 7950 -M .0 * 23.2 27.1 86
HAYDEN FORK 9212 .1 .0 31.3 31.2 100
KELLEY R.S. 8180 -M .0 * 24.5 28.4 86
LILY LAKE 9156 .0 .0 100 25.4 26.6 95
MONTE CRISTO 8960 .1 .0 33.3 36.4 91
SALT RIVER SUMMIT 7760 .0 .0 100 22.2 26.3 84
TRIAL LAKE 9992 -M .0 * 32.2 36.4 88
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Basin wide percent of average * 90
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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.