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: JUNE 23 , 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 29.2 28.6 102
COTTONWOOD CREEK 7670 .0 .0 100 46.1 37.4 123
GRAND TARGHEE 9260 27.1 -M * 50.6 -M *
GRANITE CREEK 6770 .1 .0 30.4 26.3 116
GRASSY LAKE 7265 .0 .0 100 48.5 47.4 102
GROS VENTRE SUMMIT 8750 .0 .0 100 23.8 19.2 124
GUNSIGHT PASS 9820 2.2 -M * 26.4 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 47.4 47.4 100
PHILLIPS BENCH 8200 .0 .0 100 41.1 38.4 107
SALT RIVER SUMMIT 7760 .0 .0 100 26.9 25.2 107
SNAKE RIVER STATION 6920 .0 .0 100 33.2 30.1 110
SPRING CREEK DIVIDE 9000 .0 .0 100 39.1 34.4 114
THUMB DIVIDE 7980 .0 .0 100 31.8 26.3 121
TOGWOTEE PASS 9580 13.4 9.4 143 43.0 34.4 125
TWO OCEAN PLATEAU 9240 20.2 12.6 160 43.9 38.4 114
WILLOW CREEK 8380 .0 .0 100 57.5 44.6 129
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Basin wide percent of average 153 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 9.3 6.8 137 31.5 29.0 109
BLACK BEAR 8170 3.3 8.0 41 50.6 52.8 96
CANYON 7870 .0 .0 100 25.7 22.1 116
FISHER CREEK 9100 12.4 14.4 86 49.8 49.5 101
MADISON PLATEAU 7750 .0 .1 0 35.6 36.2 98
NORTHEAST ENTRANCE 7350 .0 .0 100 21.8 19.5 112
PARKER PEAK 9400 .0 6.0 0 28.7 25.4 113
SYLVAN LAKE 8420 .0 1.6 0 35.8 31.4 114
THUMB DIVIDE 7980 .0 .0 100 31.8 26.3 121
TWO OCEAN PLATEAU 9240 20.2 12.6 160 43.9 38.4 114
WHISKEY CREEK 6800 .0 .0 100 29.2 29.3 100
WHITE MILL 8700 1.3 6.0 22 36.0 37.6 96
WOLVERINE 7650 .0 .0 100 20.8 19.9 105
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Basin wide percent of average 84 106
WIND RIVER
BURROUGHS CREEK 8750 .0 .1 0 28.6 24.3 118
COLD SPRINGS 9630 .0 .0 100 19.6 18.9 104
DEER PARK 9700 .0 1.0 0 30.7 33.0 93
HOBBS PARK 10100 .0 2.5 0 25.9 22.9 113
LITTLE WARM 9370 .0 .0 100 25.4 21.7 117
SOUTH PASS 9040 .0 .6 0 26.3 27.6 95
ST. LAWRENCE ALT 8620 .0 .0 100 18.4 17.0 108
TOGWOTEE PASS 9580 13.4 9.4 143 43.0 34.4 125
TOWNSEND CREEK 8700 .0 .0 100 22.3 20.5 109
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Basin wide percent of average 99 109
BIGHORN BASIN
BALD MTN. 9380 .0 4.2 0 25.1 27.5 91
BEAR TRAP MEADOW 8200 .0 .0 100 16.4 16.3 101
BLACKWATER 9780 13.3 12.4 107 36.1 31.5 115
BONE SPRINGS DIV 9350 .0 .7 0 24.2 24.8 98
EVENING STAR 9200 8.4 11.5 73 44.0 37.0 119
GRAVE SPRINGS 8550 .0 .0 100 14.8 18.0 82
KIRWIN 9550 .0 .2 0 25.1 19.7 127
MARQUETTE 8760 .0 .4 0 16.8 20.5 82
MIDDLE POWDER 7760 .0 .0 100 17.1 21.1 81
OWL CREEK 8975 .0 .0 100 15.9 13.0 122
POWDER RIVER PASS 9480 .0 .0 100 24.5 21.9 112
SHELL CREEK 9580 .0 1.4 0 25.7 23.1 111
SYLVAN LAKE 8420 .0 1.6 0 35.8 31.4 114
SYLVAN ROAD 7120 .0 .0 100 29.8 25.2 118
TIMBER CREEK 7950 .0 .0 100 16.8 16.2 104
YOUNTS PEAK 8350 .0 .1 0 25.3 24.0 105
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Basin wide percent of average 67 106
SHOSHONE RIVER
BLACKWATER 9780 13.3 12.4 107 36.1 31.5 115
EVENING STAR 9200 8.4 11.5 73 44.0 37.0 119
KIRWIN 9550 .0 .2 0 25.1 19.7 127
MARQUETTE 8760 .0 .4 0 16.8 20.5 82
SYLVAN LAKE 8420 .0 1.6 0 35.8 31.4 114
SYLVAN ROAD 7120 .0 .0 100 29.8 25.2 118
YOUNTS PEAK 8350 .0 .1 0 25.3 24.0 105
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Basin wide percent of average 83 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 16.4 16.3 101
BIG GOOSE 7990 .0 .0 100 19.8 17.7 112
BONE SPRINGS DIV 9350 .0 .7 0 24.2 24.8 98
BURGESS JUNCTION 7880 .0 .0 100 19.9 20.6 97
CLOUD PEAK RESERVOIR 9860 .0 .9 0 26.3 24.2 109
DOME LAKE 8880 .0 .0 100 24.1 22.7 106
GRAVE SPRINGS 8550 .0 .0 100 14.8 18.0 82
HANSEN SAWMILL 8360 .0 .0 100 16.8 16.5 102
MIDDLE POWDER 7760 .0 .0 100 17.1 21.1 81
POWDER RIVER PASS 9480 .0 .0 100 24.5 21.9 112
SUCKER CREEK 8880 .0 .0 100 26.7 23.9 112
TIE CREEK 6870 .0 .0 100 22.9 19.6 117
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Basin wide percent of average 0 103
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 22.2 20.3 109
COLE CANYON 5910 .0 .0 100 19.4 15.6 124
NORTH RAPID CREEK 6130 .0 .0 100 18.5 16.9 109
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Basin wide percent of average * 114
UPPER N. PLATTE RIVER
COLUMBINE 9160 -M .0 * 36.1 33.3 108
DIVIDE PEAK 8880 .0 .0 100 38.1 28.7 133
ELK RIVER 8700 -M .0 * 31.3 27.3 115
JOE WRIGHT 10120 .1 3.8 3 39.5 36.7 108
NORTH FRENCH CREEK 10130 -M 7.5 * -M 36.1 *
OLD BATTLE 10000 7.6 7.0 109 52.9 45.8 116
SAGE CREEK BASIN 7850 .0 .0 100 23.0 16.7 138
SOUTH BRUSH CREEK 8440 .0 .0 100 26.0 25.2 103
TOWER 10500 8.2 18.1 45 56.1 51.9 108
WEBBER SPRINGS 9250 .0 .3 0 40.8 36.0 113
WILLOW CREEK PASS 9540 .0 .0 100 20.5 20.6 100
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Basin wide percent of average 54 113
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 1.9 0 32.8 32.7 100
CASPER MTN. 7900 .0 .5 0 23.9 25.8 93
DEADMAN HILL 10220 .0 1.7 0 25.5 26.1 98
DEER PARK 9700 .0 1.0 0 30.7 33.0 93
LAPRELE CREEK 8375 .0 .0 100 20.9 21.7 96
RENO HILL 8400 .0 .0 100 26.1 26.3 99
ROACH 9700 .1 .5 20 28.8 28.0 103
SAND LAKE 10050 4.1 7.7 53 43.3 36.2 120
SOUTH PASS 9040 .0 .6 0 26.3 27.6 95
WINDY PEAK 7900 -M .0 * 19.1 18.7 102
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Basin wide percent of average 30 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 27.3 22.0 124
DIVIDE PEAK 8880 .0 .0 100 38.1 28.7 133
OLD BATTLE 10000 7.6 7.0 109 52.9 45.8 116
SANDSTONE RS 8150 -M .0 * 30.0 26.0 115
WHISKEY PARK 8950 -M 1.1 * 46.4 39.4 118
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Basin wide percent of average 109 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100 24.5 20.0 123
BLIND BULL SUM 8650 .0 4.3 0 31.2 29.5 106
EAST RIM DIVIDE 7930 .0 .0 100 20.4 17.3 118
ELKHART PARK G.S. 9400 -M .0 * 25.9 20.6 126
GROS VENTRE SUMMIT 8750 .0 .0 100 23.8 19.2 124
GUNSIGHT PASS 9820 2.2 -M * 26.4 -M *
KENDALL R.S. 7740 .0 .0 100 22.4 19.8 113
LOOMIS PARK 8240 .0 .0 100 29.3 23.7 124
NEW FORK LAKE 8340 -M .0 * 19.8 17.3 114
SNIDER BASIN 8060 .0 .0 100 22.4 21.4 105
SPRING CREEK DIVIDE 9000 .0 .0 100 39.1 34.4 114
TRIPLE PEAK 8500 .0 .0 100 39.1 33.4 117
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Basin wide percent of average 0 116
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 21.5 18.2 118
HEWINTA 9519 .0 .0 100 20.0 21.5 93
HICKERSON PARK 9145 .0 .0 100 17.2 13.7 126
HOLE-IN-ROCK 9150 .0 .0 100 15.4 13.5 114
INDIAN CREEK 9425 .0 .7 0 32.6 33.8 96
KELLEY R.S. 8180 .0 .0 100 28.7 27.4 105
STEEL CREEK PARK 10200 .0 2.2 0 24.4 24.6 99
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Basin wide percent of average 0 105
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 25.9 26.3 98
HAYDEN FORK 9212 .0 .0 100 31.6 29.9 106
KELLEY R.S. 8180 .0 .0 100 28.7 27.4 105
LILY LAKE 9156 .0 .0 100 25.9 25.5 102
MONTE CRISTO 8960 .0 1.0 0 38.0 35.4 107
SALT RIVER SUMMIT 7760 .0 .0 100 26.9 25.2 107
TRIAL LAKE 9992 .1 3.1 3 35.6 35.0 102
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Basin wide percent of average 2 104
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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.