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: SEPTEMBER 30 , 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 .1 .0 * 41.5 33.2 125
COTTONWOOD CREEK 7670 .0 .0 100* 58.2 42.8 136
GRAND TARGHEE 9260 .0 -M * 66.9 -M *
GRANITE CREEK 6770 .0 .0 100* 40.0 30.6 131
GRASSY LAKE 7265 .1 .0 * 67.2 53.8 125
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.9 24.9 108
GUNSIGHT PASS 9820 .0 -M * 33.1 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 * 59.9 53.3 112
PHILLIPS BENCH 8200 .0 .0 100* 53.7 43.8 123
SALT RIVER SUMMIT 7760 -M .0 * -M 29.6 *
SNAKE RIVER STATION 6920 .0 .0 100* 44.8 35.2 127
SPRING CREEK DIVIDE 9000 .2 .0 * 49.8 39.4 126
THUMB DIVIDE 7980 .1 .0 * 36.6 30.4 120
TOGWOTEE PASS 9580 .0 .0 100* 51.4 40.7 126
TWO OCEAN PLATEAU 9240 .0 .0 100* 52.0 45.0 116
WILLOW CREEK 8380 .0 .0 100* 67.0 51.7 130
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Basin wide percent of average * 124
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .4 0* 43.3 35.1 123
BLACK BEAR 8170 .0 .2 0* 73.6 59.6 123
CANYON 7870 .0 .1 0* 30.1 27.6 109
FISHER CREEK 9100 .0 .3 0* 62.3 58.2 107
MADISON PLATEAU 7750 .0 .1 0* 53.1 42.0 126
NORTHEAST ENTRANCE 7350 .0 .0 100* 28.2 26.0 108
PARKER PEAK 9400 .0 .5 0* 47.3 30.9 153
SYLVAN LAKE 8420 .0 .3 0* 48.7 37.2 131
THUMB DIVIDE 7980 .1 .0 * 36.6 30.4 120
TWO OCEAN PLATEAU 9240 .0 .0 100* 52.0 45.0 116
WHISKEY CREEK 6800 .0 .0 100* 42.6 35.2 121
WHITE MILL 8700 .0 .2 0* 45.5 45.3 100
WOLVERINE 7650 .0 .0 100* 27.8 25.6 109
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Basin wide percent of average 5* 119
WIND RIVER
BURROUGHS CREEK 8750 .0 .2 0* 32.0 29.8 107
CASTLE CREEK 8400 .0 -M * 17.6 -M *
COLD SPRINGS 9630 .0 .2 0* 23.7 23.9 99
DEER PARK 9700 .0 .6 0* 38.4 37.9 101
HOBBS PARK 10100 .0 .3 0* 32.9 28.4 116
LITTLE WARM 9370 .0 .1 0* 27.8 27.4 101
SOUTH PASS 9040 .0 .2 0* 29.2 32.0 91
ST. LAWRENCE ALT 8620 .0 .1 0* 23.2 21.5 108
TOGWOTEE PASS 9580 .0 .0 100* 51.4 40.7 126
TOWNSEND CREEK 8700 .0 .1 0* 26.5 25.5 104
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Basin wide percent of average 0* 107
BIGHORN BASIN
BALD MTN. 9380 .0 .6 0* 39.0 33.9 115
BEAR TRAP MEADOW 8200 .0 .1 0* 23.4 21.3 110
BLACKWATER 9780 .0 .6 0* 46.1 38.5 120
BONE SPRINGS DIV 9350 .0 .4 0* 36.0 32.2 112
EVENING STAR 9200 .0 .4 0* 59.3 44.2 134
GRAVE SPRINGS 8550 .0 .1 0* 24.9 22.9 109
KIRWIN 9550 .0 .4 0* 28.2 27.2 104
MARQUETTE 8760 .0 -M * 22.6 27.3 83
MIDDLE POWDER 7760 .0 .2 0* 26.4 26.3 100
OWL CREEK 8975 .0 .2 0* 16.5 18.0 92
POWDER RIVER PASS 9480 .0 .3 0* 34.1 27.4 124
SHELL CREEK 9580 .0 .7 0* 34.3 29.3 117
SYLVAN LAKE 8420 .0 .3 0* 48.7 37.2 131
SYLVAN ROAD 7120 .0 .0 100* 35.4 30.3 117
TIMBER CREEK 7950 .0 .1 0* 19.4 22.0 88
YOUNTS PEAK 8350 .0 .2 0* 30.4 31.2 97
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Basin wide percent of average 0* 112
SHOSHONE RIVER
BLACKWATER 9780 .0 .6 0* 46.1 38.5 120
EVENING STAR 9200 .0 .4 0* 59.3 44.2 134
KIRWIN 9550 .0 .4 0* 28.2 27.2 104
MARQUETTE 8760 .0 -M * 22.6 27.3 83
SYLVAN LAKE 8420 .0 .3 0* 48.7 37.2 131
SYLVAN ROAD 7120 .0 .0 100* 35.4 30.3 117
YOUNTS PEAK 8350 .0 .2 0* 30.4 31.2 97
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Basin wide percent of average 0* 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .1 0* 23.4 21.3 110
BIG GOOSE 7990 .0 .0 100* 28.5 23.0 124
BONE SPRINGS DIV 9350 .0 .4 0* 36.0 32.2 112
BURGESS JUNCTION 7880 .0 .3 0* 30.8 26.6 116
CLOUD PEAK RESERVOIR 9860 .0 .1 0* 36.5 31.2 117
DOME LAKE 8880 .0 .3 0* 31.8 29.0 110
GRAVE SPRINGS 8550 .0 .1 0* 24.9 22.9 109
HANSEN SAWMILL 8360 .0 .1 0* 25.1 22.2 113
LITTLE GOOSE 8870 .0 -M * 32.9 -M *
MIDDLE POWDER 7760 .0 .2 0* 26.4 26.3 100
POWDER RIVER PASS 9480 .0 .3 0* 34.1 27.4 124
SOLDIER PARK 8720 .0 -M * 25.4 -M *
SUCKER CREEK 8880 .0 .2 0* 36.6 30.1 122
TIE CREEK 6870 .0 .0 100* 29.9 25.0 120
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Basin wide percent of average 0* 115
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 34.1 26.7 128
COLE CANYON 5910 .0 .0 100* 32.8 22.7 144
NORTH RAPID CREEK 6130 .0 .0 100* 32.6 25.0 130
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Basin wide percent of average * 134
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .1 -M * 65.8 -M *
CINNABAR PARK 9574 .1 .0 * 53.2 34.2 156
COLUMBINE 9160 .0 .0 100* 54.6 38.0 144
DIVIDE PEAK 8880 .0 .1 0* 46.0 33.4 138
ELK RIVER 8700 .0 .0 100* 43.8 32.3 136
JOE WRIGHT 10120 .0 .1 0* 64.3 44.8 144
NORTH FRENCH CREEK 10130 .0 .0 100* 82.4 42.4 194
OLD BATTLE 10000 .0 .2 0* 74.3 51.4 145
SAGE CREEK BASIN 7850 .0 .0 100* 28.5 19.3 148
SOUTH BRUSH CREEK 8440 .0 .0 100* 38.2 31.1 123
TOWER 10500 -M .0 * 93.1 58.3 160
WEBBER SPRINGS 9250 .0 .1 0* 56.4 41.7 135
WILLOW CREEK PASS 9540 .0 .0 100* 37.0 26.4 140
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Basin wide percent of average 20* 148
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .1 0* 51.2 38.4 133
CASPER MTN. 7900 .1 .0 * 27.2 30.1 90
DEADMAN HILL 10220 .0 .2 0* 39.8 31.6 126
DEER PARK 9700 .0 .6 0* 38.4 37.9 101
LAPRELE CREEK 8375 .0 .0 100* 26.0 27.5 95
RENO HILL 8400 .0 .0 100* 30.9 31.2 99
ROACH 9700 .0 .0 100* 41.8 33.5 125
SAND LAKE 10050 .0 .3 0* 58.8 41.8 141
SOUTH PASS 9040 .0 .2 0* 29.2 32.0 91
WINDY PEAK 7900 .0 .0 100* 22.9 23.8 96
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Basin wide percent of average 7* 112
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 31.2 25.4 123
DIVIDE PEAK 8880 .0 .1 0* 46.0 33.4 138
OLD BATTLE 10000 .0 .2 0* 74.3 51.4 145
SANDSTONE RS 8150 .0 .0 100* 43.8 30.8 142
WHISKEY PARK 8950 .0 .0 100* 67.1 44.9 149
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Basin wide percent of average 0* 141
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .0 * 29.3 24.8 118
BLIND BULL SUM 8650 .0 .0 100* 38.7 34.3 113
EAST RIM DIVIDE 7930 .2 .0 * 24.9 21.2 117
ELKHART PARK G.S. 9400 .0 .0 100* 25.8 26.3 98
GROS VENTRE SUMMIT 8750 .0 .0 100* 26.9 24.9 108
GUNSIGHT PASS 9820 .0 -M * 33.1 -M *
KENDALL R.S. 7740 .0 .0 100* 26.3 24.0 110
LOOMIS PARK 8240 .1 .0 * 34.9 29.0 120
NEW FORK LAKE 8340 .4 .0 * 20.2 22.0 92
POCKET CREEK 9360 .0 -M * 27.9 -M *
SNIDER BASIN 8060 .1 .0 * 29.5 24.8 119
SPRING CREEK DIVIDE 9000 .2 .0 * 49.8 39.4 126
TRIPLE PEAK 8500 .0 .0 100* 53.0 38.4 138
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Basin wide percent of average * 116
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 26.3 21.7 121
HEWINTA 9519 .0 .0 100* 36.1 27.8 130
HICKERSON PARK 9145 .0 .0 100* 26.6 19.4 137
HOLE-IN-ROCK 9150 .2 .0 * 28.6 19.3 148
INDIAN CREEK 9425 .2 .0 * 42.5 38.2 111
KELLEY R.S. 8180 .0 .0 100* 38.5 31.4 123
STEEL CREEK PARK 10200 -M .3 * -M 30.8 *
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Basin wide percent of average * 126
UPPER BEAR RIVER
BUG LAKE 7950 .0 .2 0* 46.3 30.3 153
HAYDEN FORK 9212 -M .1 * -M 35.6 *
KELLEY R.S. 8180 .0 .0 100* 38.5 31.4 123
LILY LAKE 9156 .0 .1 0* 41.1 30.7 134
MONTE CRISTO 8960 -M .2 * -M 40.2 *
SALT RIVER SUMMIT 7760 -M .0 * -M 29.6 *
TRIAL LAKE 9992 .1 .3 33* 54.6 41.7 131
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Basin wide percent of average 17* 135
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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.