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: OCTOBER 21 , 2008
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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 .2 0 1.5 1.2 125
COTTONWOOD CREEK 7670 .0 .3 0 1.4 1.8 78
GRAND TARGHEE 9260 1.1 -M * 3.1 -M *
GRANITE CREEK 6770 .2 .2 100 1.7 1.1 155
GRASSY LAKE 7265 .2 .6 33 2.2 2.0 110
GROS VENTRE SUMMIT 8750 1.7 .8 212 2.1 1.2 175
GUNSIGHT PASS 9820 .6 -M * 1.3 -M *
LEWIS LAKE DIVIDE 7850 .3 .4 75 1.9 1.8 106
PHILLIPS BENCH 8200 .7 .6 117 1.7 1.4 121
SALT RIVER SUMMIT 7760 -M .1 * 1.2 1.2 100
SNAKE RIVER STATION 6920 .2 .2 100 1.4 1.4 100
SPRING CREEK DIVIDE 9000 .5 .7 71 1.2 1.4 86
THUMB DIVIDE 7980 .0 .3 0 2.3 1.3 177
TOGWOTEE PASS 9580 1.6 1.5 107 2.1 1.7 124
TWO OCEAN PLATEAU 9240 1.9 1.8 106 1.6 1.9 84
WILLOW CREEK 8380 .1 .8 12 2.0 2.3 87
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Basin wide percent of average 88 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.4 1.7 82 1.4 1.3 108
BLACK BEAR 8170 1.2 1.1 109 3.3 2.0 165
CANYON 7870 .0 .3 0 .7 1.1 64
FISHER CREEK 9100 1.1 1.4 79 2.1 2.0 105
MADISON PLATEAU 7750 .5 .6 83 1.8 1.6 112
NORTHEAST ENTRANCE 7350 .0 .1 0 1.0 1.0 100
PARKER PEAK 9400 1.4 1.8 78 1.5 1.6 94
SYLVAN LAKE 8420 .0 1.1 0 1.6 1.6 100
THUMB DIVIDE 7980 .0 .3 0 2.3 1.3 177
TWO OCEAN PLATEAU 9240 1.9 1.8 106 1.6 1.9 84
WHISKEY CREEK 6800 .0 .2 0 1.4 1.3 108
WHITE MILL 8700 1.2 1.0 120 1.5 1.7 88
WOLVERINE 7650 .0 .2 0 1.2 1.2 100
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Basin wide percent of average 75 109
WIND RIVER
BURROUGHS CREEK 8750 1.8 .5 360 2.1 1.0 210
COLD SPRINGS 9630 1.6 .6 267 2.3 1.2 192
DEER PARK 9700 1.2 1.1 109 2.5 1.6 156
HOBBS PARK 10100 2.2 1.4 157 2.6 1.4 186
LITTLE WARM 9370 1.4 .7 200 1.9 1.1 173
SOUTH PASS 9040 1.3 .7 186 2.9 1.3 223
ST. LAWRENCE ALT 8620 1.5 .5 300 2.3 1.1 209
TOGWOTEE PASS 9580 1.6 1.5 107 2.1 1.7 124
TOWNSEND CREEK 8700 1.7 .6 283 2.6 1.4 186
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Basin wide percent of average 188 181
BIGHORN BASIN
BALD MTN. 9380 1.8 1.9 95 2.5 1.6 156
BEAR TRAP MEADOW 8200 .5 .4 125 1.6 1.2 133
BLACKWATER 9780 1.5 2.1 71 1.7 1.7 100
BONE SPRINGS DIV 9350 1.5 1.8 83 1.9 1.7 112
EVENING STAR 9200 1.5 1.6 94 2.1 1.7 124
GRAVE SPRINGS 8550 .8 .8 100 1.7 1.5 113
KIRWIN 9550 1.7 1.2 142 1.7 1.1 155
MARQUETTE 8760 1.3 1.3 100 2.0 1.5 133
MIDDLE POWDER 7760 .0 1.0 0 1.7 1.8 94
OWL CREEK 8975 1.7 .6 283 1.8 .8 225
POWDER RIVER PASS 9480 .9 .8 112 1.7 1.3 131
SHELL CREEK 9580 2.1 2.0 105 2.4 1.4 171
SYLVAN LAKE 8420 .0 1.1 0 1.6 1.6 100
SYLVAN ROAD 7120 .0 .2 0 1.1 1.1 100
TIMBER CREEK 7950 1.2 .6 200 2.1 1.0 210
YOUNTS PEAK 8350 1.2 .8 150 1.4 1.2 117
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Basin wide percent of average 97 131
SHOSHONE RIVER
BLACKWATER 9780 1.5 2.1 71 1.7 1.7 100
EVENING STAR 9200 1.5 1.6 94 2.1 1.7 124
KIRWIN 9550 1.7 1.2 142 1.7 1.1 155
MARQUETTE 8760 1.3 1.3 100 2.0 1.5 133
SYLVAN LAKE 8420 .0 1.1 0 1.6 1.6 100
SYLVAN ROAD 7120 .0 .2 0 1.1 1.1 100
YOUNTS PEAK 8350 1.2 .8 150 1.4 1.2 117
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Basin wide percent of average 87 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .4 125 1.6 1.2 133
BIG GOOSE 7990 .5 .5 100 1.7 1.5 113
BONE SPRINGS DIV 9350 1.5 1.8 83 1.9 1.7 112
BURGESS JUNCTION 7880 .9 1.0 90 1.9 1.5 127
CLOUD PEAK RESERVOIR 9860 1.4 1.0 140 2.0 1.8 111
DOME LAKE 8880 .9 1.2 75 1.6 1.7 94
GRAVE SPRINGS 8550 .8 .8 100 1.7 1.5 113
HANSEN SAWMILL 8360 .0 .4 0 1.4 1.2 117
MIDDLE POWDER 7760 .0 1.0 0 1.7 1.8 94
POWDER RIVER PASS 9480 .9 .8 112 1.7 1.3 131
SUCKER CREEK 8880 1.0 .9 111 2.1 1.6 131
TIE CREEK 6870 .3 .4 75 2.9 1.8 161
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Basin wide percent of average 85 119
BELLE FOURCHE
BLIND PARK 6890 .0 .1 0 1.2 1.7 71
COLE CANYON 5910 .0 .4 0 2.7 1.2 225
NORTH RAPID CREEK 6130 .0 .2 0 1.7 1.7 100
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Basin wide percent of average 0 122
UPPER N. PLATTE RIVER
COLUMBINE 9160 .2 .2 100 .6 1.4 43
DIVIDE PEAK 8880 .1 1.0 10 2.0 1.8 111
ELK RIVER 8700 .2 .3 67 1.1 1.4 79
JOE WRIGHT 10120 .0 1.4 0 .9 2.2 41
NORTH FRENCH CREEK 10130 .5 2.0 25 1.3 2.0 65
OLD BATTLE 10000 .1 1.7 6 1.4 2.2 64
SAGE CREEK BASIN 7850 .0 .6 0 .8 1.0 80
SOUTH BRUSH CREEK 8440 .0 .3 0 .8 1.7 47
TOWER 10500 .2 1.7 12 1.8 2.3 78
WEBBER SPRINGS 9250 .1 .9 11 1.0 1.9 53
WILLOW CREEK PASS 9540 .0 .6 0 .6 1.3 46
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Basin wide percent of average 13 64
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 1.3 8 .6 1.5 40
CASPER MTN. 7900 .1 1.0 10 1.6 1.6 100
DEADMAN HILL 10220 1.3 1.4 93 .6 1.6 37
DEER PARK 9700 1.2 1.1 109 2.5 1.6 156
LAPRELE CREEK 8375 .0 .5 0 .6 1.2 50
RENO HILL 8400 .5 1.1 45 1.2 1.6 75
ROACH 9700 .2 .5 40 .8 1.5 53
SAND LAKE 10050 1.0 1.9 53 .9 1.9 47
SOUTH PASS 9040 1.3 .7 186 2.9 1.3 223
WINDY PEAK 7900 .6 .2 300 .8 1.1 73
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Basin wide percent of average 65 84
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .2 0 .6 1.2 50
DIVIDE PEAK 8880 .1 1.0 10 2.0 1.8 111
OLD BATTLE 10000 .1 1.7 6 1.4 2.2 64
SANDSTONE RS 8150 .1 .2 50 .6 1.5 40
WHISKEY PARK 8950 .2 .9 22 1.1 1.9 58
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Basin wide percent of average 12 66
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.0 .7 143 1.4 1.1 127
BLIND BULL SUM 8650 1.5 .8 188 2.0 1.3 154
EAST RIM DIVIDE 7930 .0 .2 0 1.9 .8 237
ELKHART PARK G.S. 9400 .9 .4 225 1.8 1.3 138
GROS VENTRE SUMMIT 8750 1.7 .8 212 2.1 1.2 175
GUNSIGHT PASS 9820 .6 -M * 1.3 -M *
KENDALL R.S. 7740 .1 .2 50 1.5 1.0 150
LOOMIS PARK 8240 .7 .4 175 2.1 1.1 191
NEW FORK LAKE 8340 .2 .2 100 1.5 1.0 150
SNIDER BASIN 8060 .3 .3 100 1.2 .9 133
SPRING CREEK DIVIDE 9000 .5 .7 71 1.2 1.4 86
TRIPLE PEAK 8500 1.0 .5 200 1.9 1.3 146
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Basin wide percent of average 152 150
LOWER GREEN RIVER
HAMS FORK 7840 .0 .1 0 1.3 .9 144
HEWINTA 9519 .0 .6 0 1.2 1.5 80
HICKERSON PARK 9145 .0 .2 0 1.2 1.1 109
HOLE-IN-ROCK 9150 .0 .2 0 1.7 1.1 155
INDIAN CREEK 9425 1.2 .7 171 1.7 1.5 113
KELLEY R.S. 8180 .1 .4 25 1.4 1.3 108
STEEL CREEK PARK 10200 .7 1.0 70 1.6 1.5 107
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Basin wide percent of average 62 113
UPPER BEAR RIVER
BUG LAKE 7950 .1 .7 14 1.4 1.5 93
HAYDEN FORK 9212 .0 .5 0 1.3 1.5 87
KELLEY R.S. 8180 .1 .4 25 1.4 1.3 108
LILY LAKE 9156 .0 .6 0 1.7 1.5 113
MONTE CRISTO 8960 .0 1.0 0 1.6 1.8 89
SALT RIVER SUMMIT 7760 -M .1 * 1.2 1.2 100
TRIAL LAKE 9992 .2 1.2 17 1.4 1.7 82
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Basin wide percent of average 9 95
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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.