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 MONDAY: SEPTEMBER 12 , 2011
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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* 40.6 32.2 126
COTTONWOOD CREEK 7670 .0 .0 100* 57.5 41.5 139
GRAND TARGHEE 9260 .0 -M * 64.7 -M *
GRANITE CREEK 6770 .0 .0 100* 39.2 29.7 132
GRASSY LAKE 7265 .1 .0 * 66.1 52.2 127
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 23.7 112
GUNSIGHT PASS 9820 .0 -M * 32.8 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100* 59.4 52.0 114
PHILLIPS BENCH 8200 .0 .0 100* 53.3 42.5 125
SALT RIVER SUMMIT 7760 .1 .0 * 34.7 28.6 121
SNAKE RIVER STATION 6920 .0 .0 100* 44.5 34.2 130
SPRING CREEK DIVIDE 9000 .1 .0 * 49.2 38.2 129
THUMB DIVIDE 7980 .1 .0 * 36.1 29.5 122
TOGWOTEE PASS 9580 .0 .0 100* 51.2 39.2 131
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.5 43.6 118
WILLOW CREEK 8380 .0 .0 100* 66.4 49.9 133
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Basin wide percent of average * 126
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .0 100* 43.2 34.0 127
BLACK BEAR 8170 .0 .0 100* 73.3 58.1 126
CANYON 7870 .0 .0 100* 30.0 26.6 113
FISHER CREEK 9100 .0 .0 100* 61.8 56.5 109
MADISON PLATEAU 7750 .0 .0 100* 52.3 40.8 128
NORTHEAST ENTRANCE 7350 .1 .0 * 27.8 24.8 112
PARKER PEAK 9400 .0 .0 100* 46.5 29.7 157
SYLVAN LAKE 8420 .0 .0 100* 48.2 36.0 134
THUMB DIVIDE 7980 .1 .0 * 36.1 29.5 122
TWO OCEAN PLATEAU 9240 .0 .0 100* 51.5 43.6 118
WHISKEY CREEK 6800 .0 .0 100* 41.8 34.0 123
WHITE MILL 8700 .0 .0 100* 44.9 43.8 103
WOLVERINE 7650 .0 .0 100* 27.4 24.5 112
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Basin wide percent of average * 121
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 31.8 28.5 112
CASTLE CREEK 8400 .0 -M * 17.4 -M *
COLD SPRINGS 9630 .0 .0 100* 23.3 22.7 103
DEER PARK 9700 .0 .0 100* 38.1 36.9 103
HOBBS PARK 10100 .0 .0 100* 31.7 27.2 117
LITTLE WARM 9370 .0 .0 100* 27.4 26.2 105
SOUTH PASS 9040 .0 .0 100* 28.8 30.9 93
ST. LAWRENCE ALT 8620 .0 .0 100* 23.0 20.5 112
TOGWOTEE PASS 9580 .0 .0 100* 51.2 39.2 131
TOWNSEND CREEK 8700 .0 .0 100* 25.8 24.2 107
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Basin wide percent of average * 110
BIGHORN BASIN
BALD MTN. 9380 .0 .0 100* 38.4 32.3 119
BEAR TRAP MEADOW 8200 .0 .0 100* 22.9 20.0 115
BLACKWATER 9780 .0 .0 100* 45.5 37.0 123
BONE SPRINGS DIV 9350 .0 .1 0* 35.7 30.4 117
EVENING STAR 9200 .0 .0 100* 58.2 42.8 136
GRAVE SPRINGS 8550 .0 .0 100* 24.3 21.8 111
KIRWIN 9550 .0 .0 100* 27.8 25.7 108
MARQUETTE 8760 .0 -M * 22.1 25.8 86
MIDDLE POWDER 7760 .0 .0 100* 25.7 24.9 103
OWL CREEK 8975 .0 .0 100* 16.3 16.9 96
POWDER RIVER PASS 9480 .0 .0 100* 33.9 26.1 130
SHELL CREEK 9580 .0 .1 0* 33.9 27.8 122
SYLVAN LAKE 8420 .0 .0 100* 48.2 36.0 134
SYLVAN ROAD 7120 .1 .0 * 35.1 29.2 120
TIMBER CREEK 7950 .0 .1 0* 19.2 20.7 93
YOUNTS PEAK 8350 .0 .0 100* 30.0 29.8 101
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Basin wide percent of average 33* 116
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 45.5 37.0 123
EVENING STAR 9200 .0 .0 100* 58.2 42.8 136
KIRWIN 9550 .0 .0 100* 27.8 25.7 108
MARQUETTE 8760 .0 -M * 22.1 25.8 86
SYLVAN LAKE 8420 .0 .0 100* 48.2 36.0 134
SYLVAN ROAD 7120 .1 .0 * 35.1 29.2 120
YOUNTS PEAK 8350 .0 .0 100* 30.0 29.8 101
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Basin wide percent of average * 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 22.9 20.0 115
BIG GOOSE 7990 .0 .0 100* 28.5 21.6 132
BONE SPRINGS DIV 9350 .0 .1 0* 35.7 30.4 117
BURGESS JUNCTION 7880 .0 .0 100* 30.6 25.2 121
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.5 29.5 120
DOME LAKE 8880 .0 .1 0* 31.6 27.5 115
GRAVE SPRINGS 8550 .0 .0 100* 24.3 21.8 111
HANSEN SAWMILL 8360 .0 .0 100* 24.4 21.0 116
LITTLE GOOSE 8870 .0 -M * 32.4 -M *
MIDDLE POWDER 7760 .0 .0 100* 25.7 24.9 103
POWDER RIVER PASS 9480 .0 .0 100* 33.9 26.1 130
SOLDIER PARK 8720 -M -M * 24.5 -M *
SUCKER CREEK 8880 -M .0 * 36.7 28.6 128
TIE CREEK 6870 .0 .0 100* 29.6 23.7 125
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Basin wide percent of average 0* 120
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 33.5 25.9 129
COLE CANYON 5910 .0 .0 100* 31.7 21.7 146
NORTH RAPID CREEK 6130 .2 .0 * 32.0 24.4 131
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Basin wide percent of average * 135
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 64.9 -M *
CINNABAR PARK 9574 .1 .0 * 52.8 32.3 163
COLUMBINE 9160 .0 .0 100* 53.8 37.0 145
DIVIDE PEAK 8880 .0 .0 100* 45.2 32.2 140
ELK RIVER 8700 .0 .0 100* 42.7 31.3 136
JOE WRIGHT 10120 .0 .0 100* 62.8 43.1 146
NORTH FRENCH CREEK 10130 .0 .0 100* 81.2 41.2 197
OLD BATTLE 10000 .0 .0 100* 73.0 50.0 146
SAGE CREEK BASIN 7850 .0 .0 100* 28.5 18.7 152
SOUTH BRUSH CREEK 8440 .0 .0 100* 37.7 29.7 127
TOWER 10500 .0 .0 100* 91.1 56.8 160
WEBBER SPRINGS 9250 .1 .0 * 55.7 40.2 139
WILLOW CREEK PASS 9540 .0 .0 100* 36.5 25.4 144
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Basin wide percent of average * 151
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 51.0 37.3 137
CASPER MTN. 7900 .0 .0 100* 27.3 29.2 93
DEADMAN HILL 10220 .0 .0 100* 39.5 30.4 130
DEER PARK 9700 .0 .0 100* 38.1 36.9 103
LAPRELE CREEK 8375 .0 .0 100* 25.9 26.6 97
RENO HILL 8400 .0 .0 100* 30.7 30.2 102
ROACH 9700 .1 .0 * 41.4 32.3 128
SAND LAKE 10050 .0 .0 100* 58.3 40.5 144
SOUTH PASS 9040 .0 .0 100* 28.8 30.9 93
WINDY PEAK 7900 .0 .0 100* 22.8 22.9 100
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Basin wide percent of average * 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * -M 24.6 *
DIVIDE PEAK 8880 .0 .0 100* 45.2 32.2 140
OLD BATTLE 10000 .0 .0 100* 73.0 50.0 146
SANDSTONE RS 8150 .0 .0 100* 43.1 29.7 145
WHISKEY PARK 8950 .0 .0 100* 65.7 43.6 151
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Basin wide percent of average * 146
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .0 * 28.3 23.7 119
BLIND BULL SUM 8650 .0 .0 100* 37.8 33.3 114
EAST RIM DIVIDE 7930 .2 .0 * 24.5 20.4 120
ELKHART PARK G.S. 9400 .0 .0 100* 24.9 25.0 100
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 23.7 112
GUNSIGHT PASS 9820 .0 -M * 32.8 -M *
KENDALL R.S. 7740 .0 .0 100* 25.0 23.1 108
LOOMIS PARK 8240 .1 .0 * 34.4 27.8 124
NEW FORK LAKE 8340 .3 .0 * 19.1 21.0 91
POCKET CREEK 9360 .0 -M * 26.9 -M *
SNIDER BASIN 8060 .0 .0 100* 29.5 24.1 122
SPRING CREEK DIVIDE 9000 .1 .0 * 49.2 38.2 129
TRIPLE PEAK 8500 .1 .0 * 52.5 37.3 141
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Basin wide percent of average * 118
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * 26.0 21.0 124
HEWINTA 9519 .0 .0 100* 35.6 26.6 134
HICKERSON PARK 9145 .0 .0 100* 25.8 18.4 140
HOLE-IN-ROCK 9150 .0 .0 100* 27.8 18.4 151
INDIAN CREEK 9425 .2 .0 * 42.1 37.1 113
KELLEY R.S. 8180 .0 .0 100* 37.8 30.4 124
STEEL CREEK PARK 10200 .0 .0 100* 39.7 29.6 134
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Basin wide percent of average * 129
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 45.9 29.2 157
HAYDEN FORK 9212 .0 .0 100* 48.9 34.3 143
KELLEY R.S. 8180 .0 .0 100* 37.8 30.4 124
LILY LAKE 9156 .0 .0 100* 40.4 29.5 137
MONTE CRISTO 8960 .0 .0 100* 58.8 38.8 152
SALT RIVER SUMMIT 7760 .1 .0 * 34.7 28.6 121
TRIAL LAKE 9992 .0 .0 100* 53.9 40.3 134
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Basin wide percent of average * 139
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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 1971-2000.
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.