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 WEDNESDAY: SEPTEMBER 28 , 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* 41.4 33.0 125
COTTONWOOD CREEK 7670 .0 .0 100* 58.2 42.7 136
GRAND TARGHEE 9260 .0 -M * 66.9 -M *
GRANITE CREEK 6770 .0 .0 100* 40.0 30.5 131
GRASSY LAKE 7265 .1 .0 * 67.2 53.6 125
GROS VENTRE SUMMIT 8750 .0 .0 100* 27.0 24.8 109
GUNSIGHT PASS 9820 .0 -M * 33.2 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 * 60.0 53.2 113
PHILLIPS BENCH 8200 .1 .0 * 53.7 43.6 123
SALT RIVER SUMMIT 7760 .1 .0 * 35.2 29.5 119
SNAKE RIVER STATION 6920 .0 .0 100* 44.9 35.1 128
SPRING CREEK DIVIDE 9000 .2 .0 * 49.8 39.2 127
THUMB DIVIDE 7980 .1 .0 * 36.6 30.3 121
TOGWOTEE PASS 9580 .0 .0 100* 51.5 40.5 127
TWO OCEAN PLATEAU 9240 .0 .0 100* 52.0 44.9 116
WILLOW CREEK 8380 .0 .0 100* 67.0 51.5 130
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Basin wide percent of average * 124
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .4 0* 43.4 35.0 124
BLACK BEAR 8170 .0 .2 0* 73.7 59.5 124
CANYON 7870 .0 .1 0* 30.2 27.5 110
FISHER CREEK 9100 .0 .3 0* 62.3 58.0 107
MADISON PLATEAU 7750 .0 .1 0* 53.1 41.9 127
NORTHEAST ENTRANCE 7350 .0 .0 100* 28.2 25.8 109
PARKER PEAK 9400 .0 .5 0* 47.3 30.8 154
SYLVAN LAKE 8420 .0 .2 0* 48.7 37.1 131
THUMB DIVIDE 7980 .1 .0 * 36.6 30.3 121
TWO OCEAN PLATEAU 9240 .0 .0 100* 52.0 44.9 116
WHISKEY CREEK 6800 .0 .0 100* 42.6 35.1 121
WHITE MILL 8700 .0 .2 0* 45.6 45.2 101
WOLVERINE 7650 .0 .0 100* 27.9 25.5 109
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Basin wide percent of average 5* 119
WIND RIVER
BURROUGHS CREEK 8750 .0 .2 0* 32.0 29.7 108
CASTLE CREEK 8400 .0 -M * 17.6 -M *
COLD SPRINGS 9630 .0 .2 0* 23.7 23.8 100
DEER PARK 9700 .0 .7 0* 38.4 37.8 102
HOBBS PARK 10100 .0 .2 0* 33.0 28.3 117
LITTLE WARM 9370 .0 .1 0* 28.0 27.3 103
SOUTH PASS 9040 .0 .3 0* 29.2 31.8 92
ST. LAWRENCE ALT 8620 .0 .2 0* 23.2 21.4 108
TOGWOTEE PASS 9580 .0 .0 100* 51.5 40.5 127
TOWNSEND CREEK 8700 .0 .1 0* 26.5 25.4 104
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Basin wide percent of average 0* 107
BIGHORN BASIN
BALD MTN. 9380 .0 .5 0* 38.9 33.7 115
BEAR TRAP MEADOW 8200 .0 .1 0* 23.7 21.2 112
BLACKWATER 9780 .0 .5 0* 46.1 38.4 120
BONE SPRINGS DIV 9350 .0 .4 0* 36.1 32.0 113
EVENING STAR 9200 .0 .4 0* 59.3 44.1 134
GRAVE SPRINGS 8550 .0 .1 0* 24.9 22.7 110
KIRWIN 9550 .0 .4 0* 28.2 27.1 104
MARQUETTE 8760 .0 -M * 22.5 27.2 83
MIDDLE POWDER 7760 .0 .1 0* 26.9 26.2 103
OWL CREEK 8975 .0 .2 0* 16.5 17.9 92
POWDER RIVER PASS 9480 .0 .3 0* 34.4 27.3 126
SHELL CREEK 9580 .0 .7 0* 34.3 29.2 117
SYLVAN LAKE 8420 .0 .2 0* 48.7 37.1 131
SYLVAN ROAD 7120 .0 .0 100* 35.4 30.1 118
TIMBER CREEK 7950 .0 .2 0* 19.4 21.9 89
YOUNTS PEAK 8350 .0 .1 0* 30.4 31.1 98
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Basin wide percent of average 0* 113
SHOSHONE RIVER
BLACKWATER 9780 .0 .5 0* 46.1 38.4 120
EVENING STAR 9200 .0 .4 0* 59.3 44.1 134
KIRWIN 9550 .0 .4 0* 28.2 27.1 104
MARQUETTE 8760 .0 -M * 22.5 27.2 83
SYLVAN LAKE 8420 .0 .2 0* 48.7 37.1 131
SYLVAN ROAD 7120 .0 .0 100* 35.4 30.1 118
YOUNTS PEAK 8350 .0 .1 0* 30.4 31.1 98
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Basin wide percent of average 0* 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .1 0* 23.7 21.2 112
BIG GOOSE 7990 .0 .0 100* 28.9 22.8 127
BONE SPRINGS DIV 9350 .0 .4 0* 36.1 32.0 113
BURGESS JUNCTION 7880 .0 .3 0* 30.7 26.4 116
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 36.5 31.0 118
DOME LAKE 8880 .0 .3 0* 31.8 28.8 110
GRAVE SPRINGS 8550 .0 .1 0* 24.9 22.7 110
HANSEN SAWMILL 8360 .0 .1 0* 25.1 22.1 114
LITTLE GOOSE 8870 .0 -M * 32.8 -M *
MIDDLE POWDER 7760 .0 .1 0* 26.9 26.2 103
POWDER RIVER PASS 9480 .0 .3 0* 34.4 27.3 126
SOLDIER PARK 8720 .0 -M * 25.4 -M *
SUCKER CREEK 8880 .0 .2 0* 36.4 29.9 122
TIE CREEK 6870 .0 .2 0* 29.9 24.9 120
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Basin wide percent of average 0* 116
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 34.1 26.6 128
COLE CANYON 5910 .0 .0 100* 32.8 22.6 145
NORTH RAPID CREEK 6130 .0 .0 100* 32.6 24.9 131
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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 34.1 156
COLUMBINE 9160 .0 .0 100* 54.6 37.9 144
DIVIDE PEAK 8880 .0 .0 100* 46.0 33.2 139
ELK RIVER 8700 .0 .0 100* 43.8 32.2 136
JOE WRIGHT 10120 .0 .0 100* 64.4 44.6 144
NORTH FRENCH CREEK 10130 .0 .0 100* 82.4 42.3 195
OLD BATTLE 10000 .0 .1 0* 74.4 51.3 145
SAGE CREEK BASIN 7850 .0 .0 100* 28.5 19.3 148
SOUTH BRUSH CREEK 8440 .1 .0 * 38.2 30.9 124
TOWER 10500 .0 .0 100* 93.2 58.1 160
WEBBER SPRINGS 9250 .1 .1 100* 56.4 41.5 136
WILLOW CREEK PASS 9540 .0 .0 100* 37.1 26.2 142
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Basin wide percent of average 150* 149
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 51.3 38.3 134
CASPER MTN. 7900 .1 .0 * 27.2 30.0 91
DEADMAN HILL 10220 .0 .1 0* 39.8 31.5 126
DEER PARK 9700 .0 .7 0* 38.4 37.8 102
LAPRELE CREEK 8375 .0 .0 100* 26.0 27.4 95
RENO HILL 8400 .0 .0 100* 30.9 31.1 99
ROACH 9700 .0 .0 100* 41.9 33.4 125
SAND LAKE 10050 .1 .2 50* 58.9 41.6 142
SOUTH PASS 9040 .0 .3 0* 29.2 31.8 92
WINDY PEAK 7900 .1 .0 * 22.9 23.7 97
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Basin wide percent of average 23* 112
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 31.3 25.3 124
DIVIDE PEAK 8880 .0 .0 100* 46.0 33.2 139
OLD BATTLE 10000 .0 .1 0* 74.4 51.3 145
SANDSTONE RS 8150 .0 .0 100* 43.8 30.6 143
WHISKEY PARK 8950 .0 .0 100* 67.1 44.7 150
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Basin wide percent of average 0* 142
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100* 29.3 24.6 119
BLIND BULL SUM 8650 .0 .0 100* 38.7 34.2 113
EAST RIM DIVIDE 7930 .3 .0 * 24.9 21.1 118
ELKHART PARK G.S. 9400 .0 .0 100* 25.8 26.2 98
GROS VENTRE SUMMIT 8750 .0 .0 100* 27.0 24.8 109
GUNSIGHT PASS 9820 .0 -M * 33.2 -M *
KENDALL R.S. 7740 .0 .0 100* 26.2 23.9 110
LOOMIS PARK 8240 .1 .0 * 34.9 28.9 121
NEW FORK LAKE 8340 .3 .0 * 20.2 21.9 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 39.2 127
TRIPLE PEAK 8500 .0 .0 100* 53.1 38.3 139
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Basin wide percent of average * 117
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 26.4 21.7 122
HEWINTA 9519 .0 .0 100* 36.1 27.7 130
HICKERSON PARK 9145 .0 .0 100* 26.6 19.3 138
HOLE-IN-ROCK 9150 .2 .0 * 28.7 19.2 149
INDIAN CREEK 9425 .2 .0 * 42.5 38.0 112
KELLEY R.S. 8180 .0 .0 100* 38.5 31.3 123
STEEL CREEK PARK 10200 -M .2 * 40.5 30.7 132
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Basin wide percent of average * 127
UPPER BEAR RIVER
BUG LAKE 7950 .0 .1 0* 46.2 30.2 153
HAYDEN FORK 9212 .0 .1 0* 49.7 35.5 140
KELLEY R.S. 8180 .0 .0 100* 38.5 31.3 123
LILY LAKE 9156 .0 .1 0* 41.1 30.5 135
MONTE CRISTO 8960 .1 .1 100* 59.7 40.0 149
SALT RIVER SUMMIT 7760 .1 .0 * 35.2 29.5 119
TRIAL LAKE 9992 .1 .3 33* 54.6 41.6 131
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Basin wide percent of average 43* 136
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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.