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: JUNE 27 , 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 29.5 28.8 102
COTTONWOOD CREEK 7670 .0 .0 100 46.7 37.6 124
GRAND TARGHEE 9260 19.6 -M * 51.0 -M *
GRANITE CREEK 6770 .2 .0 30.9 26.5 117
GRASSY LAKE 7265 .0 .0 100 48.7 47.7 102
GROS VENTRE SUMMIT 8750 .1 .0 24.1 19.5 124
GUNSIGHT PASS 9820 2.2 -M * 26.8 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 48.0 47.7 101
PHILLIPS BENCH 8200 .0 .0 100 41.8 38.7 108
SALT RIVER SUMMIT 7760 .0 .0 100 27.2 25.4 107
SNAKE RIVER STATION 6920 .0 .0 100 33.9 30.4 112
SPRING CREEK DIVIDE 9000 .0 .0 100 39.6 34.6 114
THUMB DIVIDE 7980 .0 .0 100 32.1 26.6 121
TOGWOTEE PASS 9580 9.4 6.6 142 43.7 34.7 126
TWO OCEAN PLATEAU 9240 13.9 9.7 143 44.6 38.8 115
WILLOW CREEK 8380 .0 .0 100 58.1 44.9 129
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Basin wide percent of average 143 114
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 4.0 4.1 98 31.7 29.4 108
BLACK BEAR 8170 .0 5.1 0 50.6 53.1 95
CANYON 7870 .1 .0 26.4 22.4 118
FISHER CREEK 9100 -M 10.5 * 49.9 50.0 100
MADISON PLATEAU 7750 .0 .0 100 35.7 36.5 98
NORTHEAST ENTRANCE 7350 -M .0 * -M 19.8 *
PARKER PEAK 9400 .0 3.8 0 29.0 25.8 112
SYLVAN LAKE 8420 .0 .6 0 36.3 31.8 114
THUMB DIVIDE 7980 .0 .0 100 32.1 26.6 121
TWO OCEAN PLATEAU 9240 13.9 9.7 143 44.6 38.8 115
WHISKEY CREEK 6800 .0 .0 100 29.5 29.6 100
WHITE MILL 8700 .0 3.5 0 36.2 38.0 95
WOLVERINE 7650 .0 .0 100 20.9 20.2 103
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Basin wide percent of average 67 105
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100 28.8 24.5 118
COLD SPRINGS 9630 .0 .2 0 20.1 19.1 105
DEER PARK 9700 .0 .0 100 30.7 33.2 92
HOBBS PARK 10100 .0 1.8 0 26.2 23.1 113
LITTLE WARM 9370 .0 .0 100 25.9 21.9 118
SOUTH PASS 9040 .2 .1 200 26.5 27.9 95
ST. LAWRENCE ALT 8620 .1 .0 18.7 17.2 109
TOGWOTEE PASS 9580 9.4 6.6 142 43.7 34.7 126
TOWNSEND CREEK 8700 .0 .0 100 22.2 20.7 107
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Basin wide percent of average 110 109
BIGHORN BASIN
BALD MTN. 9380 .0 2.6 0 25.4 27.9 91
BEAR TRAP MEADOW 8200 .1 .0 16.4 16.6 99
BLACKWATER 9780 7.3 9.0 81 36.3 31.9 114
BONE SPRINGS DIV 9350 .0 .1 0 23.9 25.2 95
EVENING STAR 9200 -M 7.8 * -M 37.4 *
GRAVE SPRINGS 8550 .0 .0 100 14.9 18.4 81
KIRWIN 9550 .0 .0 100 25.5 20.0 127
MARQUETTE 8760 .0 .3 0 17.4 20.9 83
MIDDLE POWDER 7760 .0 .0 100 17.4 21.5 81
OWL CREEK 8975 .0 .0 100 16.6 13.2 126
POWDER RIVER PASS 9480 .0 .0 100 24.7 22.2 111
SHELL CREEK 9580 .0 .5 0 26.0 23.5 111
SYLVAN LAKE 8420 .0 .6 0 36.3 31.8 114
SYLVAN ROAD 7120 .1 .0 30.3 25.5 119
TIMBER CREEK 7950 .0 .0 100 17.2 16.5 104
YOUNTS PEAK 8350 .0 .0 100 25.8 24.3 106
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Basin wide percent of average 56 104
SHOSHONE RIVER
BLACKWATER 9780 7.3 9.0 81 36.3 31.9 114
EVENING STAR 9200 -M 7.8 * -M 37.4 *
KIRWIN 9550 .0 .0 100 25.5 20.0 127
MARQUETTE 8760 .0 .3 0 17.4 20.9 83
SYLVAN LAKE 8420 .0 .6 0 36.3 31.8 114
SYLVAN ROAD 7120 .1 .0 30.3 25.5 119
YOUNTS PEAK 8350 .0 .0 100 25.8 24.3 106
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Basin wide percent of average 74 111
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .0 16.4 16.6 99
BIG GOOSE 7990 .0 .0 100 19.6 17.9 109
BONE SPRINGS DIV 9350 .0 .1 0 23.9 25.2 95
BURGESS JUNCTION 7880 .0 .0 100 20.0 20.9 96
CLOUD PEAK RESERVOIR 9860 .0 .3 0 26.2 24.6 107
DOME LAKE 8880 .0 .0 100 24.0 23.0 104
GRAVE SPRINGS 8550 .0 .0 100 14.9 18.4 81
HANSEN SAWMILL 8360 .0 .0 100 16.8 16.8 100
MIDDLE POWDER 7760 .0 .0 100 17.4 21.5 81
POWDER RIVER PASS 9480 .0 .0 100 24.7 22.2 111
SUCKER CREEK 8880 .0 .0 100 26.4 24.2 109
TIE CREEK 6870 .0 .0 100 23.0 19.9 116
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Basin wide percent of average 0 101
BELLE FOURCHE
BLIND PARK 6890 .2 .0 22.3 20.7 108
COLE CANYON 5910 .0 .0 100 19.5 16.1 121
NORTH RAPID CREEK 6130 .1 .0 18.7 17.4 107
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Basin wide percent of average * 112
UPPER N. PLATTE RIVER
COLUMBINE 9160 -M .0 * 36.5 33.5 109
DIVIDE PEAK 8880 -M .0 * 38.6 28.9 134
ELK RIVER 8700 -M .0 * 31.0 27.4 113
JOE WRIGHT 10120 .2 2.5 8 -M 37.0 *
NORTH FRENCH CREEK 10130 -M 5.0 * -M 36.4 *
OLD BATTLE 10000 1.1 4.1 27 53.4 46.0 116
SAGE CREEK BASIN 7850 .0 .0 100 23.2 16.7 139
SOUTH BRUSH CREEK 8440 .0 .0 100 26.2 25.4 103
TOWER 10500 .6 13.6 4 56.4 52.1 108
WEBBER SPRINGS 9250 .0 .0 100 40.9 36.2 113
WILLOW CREEK PASS 9540 -M .0 * -M 20.8 *
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Basin wide percent of average 9 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 1.1 9 33.1 33.0 100
CASPER MTN. 7900 .0 .3 0 23.8 26.0 92
DEADMAN HILL 10220 .0 .9 0 25.3 26.3 96
DEER PARK 9700 .0 .0 100 30.7 33.2 92
LAPRELE CREEK 8375 .0 .0 100 20.9 21.9 95
RENO HILL 8400 .0 .0 100 26.2 26.5 99
ROACH 9700 .1 .2 50 29.1 28.2 103
SAND LAKE 10050 .4 5.4 7 43.4 36.4 119
SOUTH PASS 9040 .2 .1 200 26.5 27.9 95
WINDY PEAK 7900 .4 .0 18.9 18.9 100
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Basin wide percent of average 10 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 27.8 22.1 126
DIVIDE PEAK 8880 -M .0 * 38.6 28.9 134
OLD BATTLE 10000 1.1 4.1 27 53.4 46.0 116
SANDSTONE RS 8150 .4 .0 30.4 26.1 116
WHISKEY PARK 8950 -M .3 * 46.9 39.6 118
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Basin wide percent of average 27* 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 25.1 20.2 124
BLIND BULL SUM 8650 .0 1.4 0 31.5 29.6 106
EAST RIM DIVIDE 7930 .0 .0 100 20.7 17.4 119
ELKHART PARK G.S. 9400 -M .0 * 26.6 20.8 128
GROS VENTRE SUMMIT 8750 .1 .0 24.1 19.5 124
GUNSIGHT PASS 9820 2.2 -M * 26.8 -M *
KENDALL R.S. 7740 .0 .0 100 22.5 20.0 112
LOOMIS PARK 8240 .1 .0 29.5 23.8 124
NEW FORK LAKE 8340 1.7 .0 20.3 17.5 116
SNIDER BASIN 8060 .0 .0 100 23.0 21.5 107
SPRING CREEK DIVIDE 9000 .0 .0 100 39.6 34.6 114
TRIPLE PEAK 8500 .1 .0 39.5 33.7 117
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Basin wide percent of average 0 117
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 21.9 18.3 120
HEWINTA 9519 .0 .0 100 20.8 21.7 96
HICKERSON PARK 9145 .0 .0 100 18.1 13.9 130
HOLE-IN-ROCK 9150 .0 .0 100 16.3 13.7 119
INDIAN CREEK 9425 .0 .0 100 33.2 34.0 98
KELLEY R.S. 8180 .0 .0 100 29.2 27.6 106
STEEL CREEK PARK 10200 .0 1.2 0 25.3 24.7 102
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Basin wide percent of average 0 107
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 26.1 26.4 99
HAYDEN FORK 9212 .0 .0 100 32.1 30.1 107
KELLEY R.S. 8180 .0 .0 100 29.2 27.6 106
LILY LAKE 9156 .0 .0 100 26.5 25.6 104
MONTE CRISTO 8960 .0 .0 100 38.1 35.6 107
SALT RIVER SUMMIT 7760 .0 .0 100 27.2 25.4 107
TRIAL LAKE 9992 .1 1.7 6 36.1 35.2 103
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Basin wide percent of average 6 105
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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.