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 18 , 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 29.7 118
COTTONWOOD CREEK 7670 .0 .0 100 -M 38.5 *
GRAND TARGHEE 9260 .0 -M * 48.8 -M *
GRANITE CREEK 6770 -M .0 * 32.3 27.3 118
GRASSY LAKE 7265 .0 .0 100 57.0 49.0 116
GROS VENTRE SUMMIT 8750 .0 .0 100 20.0 20.6 97
GUNSIGHT PASS 9820 -M -M * 21.3 -M *
LEWIS LAKE DIVIDE 7850 .5 .0 48.8 49.0 100
PHILLIPS BENCH 8200 .0 .0 100 45.1 39.6 114
SALT RIVER SUMMIT 7760 .0 .0 100 22.1 26.1 85
SNAKE RIVER STATION 6920 .0 .0 100 36.5 31.5 116
SPRING CREEK DIVIDE 9000 -M .0 * 32.1 35.4 91
THUMB DIVIDE 7980 -M .0 * 29.5 27.5 107
TOGWOTEE PASS 9580 .0 .0 100 41.5 35.9 116
TWO OCEAN PLATEAU 9240 -M .0 * 44.8 40.3 111
WILLOW CREEK 8380 .0 .0 100 53.5 46.2 116
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Basin wide percent of average * 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100 34.6 31.0 112
BLACK BEAR 8170 .0 .0 100 56.8 54.5 104
CANYON 7870 .0 .0 100 28.8 23.7 122
FISHER CREEK 9100 .4 .0 53.1 52.0 102
MADISON PLATEAU 7750 .1 .0 44.8 37.9 118
NORTHEAST ENTRANCE 7350 .1 .0 22.2 21.4 104
PARKER PEAK 9400 .0 .4 0 40.5 27.0 150
SYLVAN LAKE 8420 .0 .0 100 40.8 33.2 123
THUMB DIVIDE 7980 -M .0 * 29.5 27.5 107
TWO OCEAN PLATEAU 9240 -M .0 * 44.8 40.3 111
WHISKEY CREEK 6800 .0 .0 100 -M 30.9 *
WHITE MILL 8700 .1 .0 38.9 39.8 98
WOLVERINE 7650 .0 .0 100 22.9 21.4 107
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Basin wide percent of average 0 112
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 26.3 25.5 103
COLD SPRINGS 9630 .0 .0 100 18.4 20.1 92
DEER PARK 9700 .0 .0 100 31.2 34.1 91
HOBBS PARK 10100 .0 .0 100 25.8 24.3 106
LITTLE WARM 9370 .0 .0 100 -M 23.1 *
SOUTH PASS 9040 .1 .0 27.7 28.7 97
ST. LAWRENCE ALT 8620 .0 .0 100 17.1 18.2 94
TOGWOTEE PASS 9580 .0 .0 100 41.5 35.9 116
TOWNSEND CREEK 8700 .0 .0 100 -M 21.7 *
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Basin wide percent of average * 101
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100 28.7 29.5 97
BEAR TRAP MEADOW 8200 .2 .0 21.9 17.8 123
BLACKWATER 9780 .0 .3 0 38.0 33.5 113
BONE SPRINGS DIV 9350 .0 .0 100 30.3 26.7 113
EVENING STAR 9200 .0 .4 0 51.3 39.3 131
GRAVE SPRINGS 8550 .0 .0 100 19.9 19.7 101
KIRWIN 9550 .0 .0 100 23.7 21.7 109
MARQUETTE 8760 .0 .0 100 23.4 22.2 105
MIDDLE POWDER 7760 .2 .0 20.5 22.7 90
OWL CREEK 8975 .1 .0 14.4 14.3 101
POWDER RIVER PASS 9480 .0 .0 100 27.7 23.4 118
SHELL CREEK 9580 .0 .0 100 28.1 25.0 112
SYLVAN LAKE 8420 .0 .0 100 40.8 33.2 123
SYLVAN ROAD 7120 .0 .0 100 31.6 26.6 119
TIMBER CREEK 7950 .1 .0 20.6 17.5 118
YOUNTS PEAK 8350 .1 .0 25.9 26.0 100
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Basin wide percent of average 0 112
SHOSHONE RIVER
BLACKWATER 9780 .0 .3 0 38.0 33.5 113
EVENING STAR 9200 .0 .4 0 51.3 39.3 131
KIRWIN 9550 .0 .0 100 23.7 21.7 109
MARQUETTE 8760 .0 .0 100 23.4 22.2 105
SYLVAN LAKE 8420 .0 .0 100 40.8 33.2 123
SYLVAN ROAD 7120 .0 .0 100 31.6 26.6 119
YOUNTS PEAK 8350 .1 .0 25.9 26.0 100
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Basin wide percent of average 0 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 .0 21.9 17.8 123
BIG GOOSE 7990 .2 .0 24.1 19.1 126
BONE SPRINGS DIV 9350 .0 .0 100 30.3 26.7 113
BURGESS JUNCTION 7880 .0 .0 100 27.3 22.5 121
CLOUD PEAK RESERVOIR 9860 .0 .0 100 32.8 26.2 125
DOME LAKE 8880 .0 .0 100 29.4 24.3 121
GRAVE SPRINGS 8550 .0 .0 100 19.9 19.7 101
HANSEN SAWMILL 8360 .0 .0 100 25.0 18.0 139
MIDDLE POWDER 7760 .2 .0 20.5 22.7 90
POWDER RIVER PASS 9480 .0 .0 100 27.7 23.4 118
SUCKER CREEK 8880 .0 .0 100 31.7 25.7 123
TIE CREEK 6870 -M .0 * 25.1 20.9 120
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Basin wide percent of average * 118
BELLE FOURCHE
BLIND PARK 6890 .1 .0 25.8 22.6 114
COLE CANYON 5910 .4 .0 24.7 18.0 137
NORTH RAPID CREEK 6130 .0 .0 100 30.2 20.3 149
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Basin wide percent of average * 133
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100 36.9 34.5 107
DIVIDE PEAK 8880 .0 .0 100 32.1 29.7 108
ELK RIVER 8700 .3 .0 30.5 28.4 107
JOE WRIGHT 10120 -M .0 * -M 38.6 *
NORTH FRENCH CREEK 10130 .0 .0 100 41.5 37.9 109
OLD BATTLE 10000 -M .0 * 50.9 47.0 108
SAGE CREEK BASIN 7850 .0 .0 100 22.9 17.2 133
SOUTH BRUSH CREEK 8440 .0 .0 100 23.5 26.6 88
TOWER 10500 .0 .5 0 53.9 53.3 101
WEBBER SPRINGS 9250 .0 .0 100 39.8 37.2 107
WILLOW CREEK PASS 9540 .4 .0 24.0 22.0 109
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Basin wide percent of average 0 107
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M .0 * 31.8 34.3 93
CASPER MTN. 7900 .0 .0 100 30.4 26.9 113
DEADMAN HILL 10220 -M .0 * 28.6 27.2 105
DEER PARK 9700 .0 .0 100 31.2 34.1 91
LAPRELE CREEK 8375 -M .0 * -M 22.9 *
RENO HILL 8400 .0 .0 100 32.9 27.3 121
ROACH 9700 .1 .0 32.1 29.2 110
SAND LAKE 10050 .0 .0 100 43.4 37.6 115
SOUTH PASS 9040 .1 .0 27.7 28.7 97
WINDY PEAK 7900 .4 .0 19.5 20.0 98
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Basin wide percent of average * 105
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 22.9 22.7 101
DIVIDE PEAK 8880 .0 .0 100 32.1 29.7 108
OLD BATTLE 10000 -M .0 * 50.9 47.0 108
SANDSTONE RS 8150 -M .0 * 28.5 27.0 106
WHISKEY PARK 8950 -M .0 * -M 40.8 *
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Basin wide percent of average * 106
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 19.6 21.2 92
BLIND BULL SUM 8650 .0 .0 100 25.3 30.5 83
EAST RIM DIVIDE 7930 .0 .0 100 15.7 18.0 87
ELKHART PARK G.S. 9400 .1 .0 17.2 21.7 79
GROS VENTRE SUMMIT 8750 .0 .0 100 20.0 20.6 97
GUNSIGHT PASS 9820 -M -M * 21.3 -M *
KENDALL R.S. 7740 .0 .0 100 18.5 20.8 89
LOOMIS PARK 8240 -M .0 * 23.6 24.6 96
NEW FORK LAKE 8340 .1 .0 14.4 18.3 79
SNIDER BASIN 8060 .0 .0 100 19.7 22.1 89
SPRING CREEK DIVIDE 9000 -M .0 * 32.1 35.4 91
TRIPLE PEAK 8500 .0 .0 100 39.3 34.6 114
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Basin wide percent of average * 92
LOWER GREEN RIVER
HAMS FORK 7840 -M .0 * 15.5 19.0 82
HEWINTA 9519 -M .0 * 24.1 23.0 105
HICKERSON PARK 9145 .0 .0 100 16.0 15.0 107
HOLE-IN-ROCK 9150 .0 .0 100 16.0 14.8 108
INDIAN CREEK 9425 .0 .0 100 31.0 34.7 89
KELLEY R.S. 8180 -M .0 * 24.4 28.3 86
STEEL CREEK PARK 10200 .7 .0 26.8 26.0 103
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Basin wide percent of average * 96
UPPER BEAR RIVER
BUG LAKE 7950 -M .0 * 23.5 27.0 87
HAYDEN FORK 9212 .1 .0 31.4 31.0 101
KELLEY R.S. 8180 -M .0 * 24.4 28.3 86
LILY LAKE 9156 .0 .0 100 25.3 26.4 96
MONTE CRISTO 8960 -M .0 * 33.3 36.2 92
SALT RIVER SUMMIT 7760 .0 .0 100 22.1 26.1 85
TRIAL LAKE 9992 -M .0 * 32.3 36.2 89
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Basin wide percent of average * 91
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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.