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 SUNDAY: OCTOBER 19 , 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 1.1 136
COTTONWOOD CREEK 7670 .0 .3 0 1.3 1.6 81
GRAND TARGHEE 9260 1.1 -M * 3.2 -M *
GRANITE CREEK 6770 .2 .1 200 1.6 .9 178
GRASSY LAKE 7265 .1 .5 20 2.0 1.8 111
GROS VENTRE SUMMIT 8750 1.4 .7 200 1.8 1.1 164
GUNSIGHT PASS 9820 .4 -M * 1.1 -M *
LEWIS LAKE DIVIDE 7850 .2 .3 67 2.0 1.6 125
PHILLIPS BENCH 8200 .9 .5 180 1.6 1.2 133
SALT RIVER SUMMIT 7760 .0 .0 100 1.1 1.1 100
SNAKE RIVER STATION 6920 .0 .1 0 1.3 1.3 100
SPRING CREEK DIVIDE 9000 .6 .6 100 1.2 1.3 92
THUMB DIVIDE 7980 .0 .3 0 2.2 1.2 183
TOGWOTEE PASS 9580 1.5 1.4 107 2.0 1.5 133
TWO OCEAN PLATEAU 9240 1.6 1.6 100 1.6 1.7 94
WILLOW CREEK 8380 .1 .7 14 2.0 2.1 95
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Basin wide percent of average 90 119
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.3 1.6 81 1.4 1.1 127
BLACK BEAR 8170 1.0 1.0 100 3.3 1.8 183
CANYON 7870 .4 .3 133 .7 .9 78
FISHER CREEK 9100 1.0 1.2 83 2.0 1.8 111
MADISON PLATEAU 7750 .7 .6 117 1.8 1.4 129
NORTHEAST ENTRANCE 7350 .1 .1 100 .9 .9 100
PARKER PEAK 9400 1.5 1.7 88 1.5 1.4 107
SYLVAN LAKE 8420 .1 1.0 10 1.6 1.5 107
THUMB DIVIDE 7980 .0 .3 0 2.2 1.2 183
TWO OCEAN PLATEAU 9240 1.6 1.6 100 1.6 1.7 94
WHISKEY CREEK 6800 .3 .2 150 1.3 1.2 108
WHITE MILL 8700 1.1 .9 122 1.4 1.5 93
WOLVERINE 7650 .1 .2 50 1.1 1.1 100
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Basin wide percent of average 86 119
WIND RIVER
BURROUGHS CREEK 8750 1.6 .4 400 2.0 .9 222
COLD SPRINGS 9630 1.5 .5 300 2.1 1.0 210
DEER PARK 9700 1.3 1.0 130 2.5 1.3 192
HOBBS PARK 10100 2.1 1.3 162 2.5 1.2 208
LITTLE WARM 9370 1.2 .6 200 1.7 1.0 170
SOUTH PASS 9040 1.5 .6 250 2.8 1.1 255
ST. LAWRENCE ALT 8620 1.7 .4 425 2.2 1.0 220
TOGWOTEE PASS 9580 1.5 1.4 107 2.0 1.5 133
TOWNSEND CREEK 8700 1.9 .6 317 2.6 1.3 200
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Basin wide percent of average 210 198
BIGHORN BASIN
BALD MTN. 9380 1.8 1.8 100 2.5 1.5 167
BEAR TRAP MEADOW 8200 .8 .4 200 1.6 1.0 160
BLACKWATER 9780 1.5 2.0 75 1.7 1.5 113
BONE SPRINGS DIV 9350 1.5 1.6 94 1.8 1.5 120
EVENING STAR 9200 1.4 1.5 93 2.1 1.5 140
GRAVE SPRINGS 8550 1.0 .7 143 1.7 1.4 121
KIRWIN 9550 1.4 1.1 127 1.5 1.0 150
MARQUETTE 8760 1.4 1.3 108 1.9 1.4 136
MIDDLE POWDER 7760 .8 .9 89 1.7 1.6 106
OWL CREEK 8975 1.8 .6 300 1.8 .7 257
POWDER RIVER PASS 9480 .9 .7 129 1.7 1.2 142
SHELL CREEK 9580 2.0 1.8 111 2.3 1.2 192
SYLVAN LAKE 8420 .1 1.0 10 1.6 1.5 107
SYLVAN ROAD 7120 .2 .2 100 1.1 1.0 110
TIMBER CREEK 7950 1.3 .7 186 2.0 .9 222
YOUNTS PEAK 8350 1.0 .7 143 1.3 1.1 118
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Basin wide percent of average 111 142
SHOSHONE RIVER
BLACKWATER 9780 1.5 2.0 75 1.7 1.5 113
EVENING STAR 9200 1.4 1.5 93 2.1 1.5 140
KIRWIN 9550 1.4 1.1 127 1.5 1.0 150
MARQUETTE 8760 1.4 1.3 108 1.9 1.4 136
SYLVAN LAKE 8420 .1 1.0 10 1.6 1.5 107
SYLVAN ROAD 7120 .2 .2 100 1.1 1.0 110
YOUNTS PEAK 8350 1.0 .7 143 1.3 1.1 118
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Basin wide percent of average 90 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .8 .4 200 1.6 1.0 160
BIG GOOSE 7990 .5 .5 100 1.6 1.4 114
BONE SPRINGS DIV 9350 1.5 1.6 94 1.8 1.5 120
BURGESS JUNCTION 7880 .9 .9 100 1.8 1.4 129
CLOUD PEAK RESERVOIR 9860 1.2 .8 150 1.7 1.6 106
DOME LAKE 8880 .9 1.1 82 1.5 1.5 100
GRAVE SPRINGS 8550 1.0 .7 143 1.7 1.4 121
HANSEN SAWMILL 8360 .7 .4 175 1.3 1.1 118
MIDDLE POWDER 7760 .8 .9 89 1.7 1.6 106
POWDER RIVER PASS 9480 .9 .7 129 1.7 1.2 142
SUCKER CREEK 8880 1.0 .8 125 1.9 1.5 127
TIE CREEK 6870 -M .4 * 2.9 1.6 181
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Basin wide percent of average 116 126
BELLE FOURCHE
BLIND PARK 6890 .1 .2 50 1.1 1.5 73
COLE CANYON 5910 .2 .4 50 2.6 1.1 236
NORTH RAPID CREEK 6130 .0 .2 0 1.6 1.5 107
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Basin wide percent of average 38 129
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .1 0 .3 1.2 25
DIVIDE PEAK 8880 .2 .9 22 2.0 1.6 125
ELK RIVER 8700 .1 .2 50 1.0 1.3 77
JOE WRIGHT 10120 .0 1.2 0 .8 2.0 40
NORTH FRENCH CREEK 10130 .7 1.8 39 1.2 1.8 67
OLD BATTLE 10000 .2 1.5 13 1.4 1.9 74
SAGE CREEK BASIN 7850 .0 .5 0 .8 .9 89
SOUTH BRUSH CREEK 8440 .0 .3 0 .8 1.5 53
TOWER 10500 .0 1.4 0 1.7 2.0 85
WEBBER SPRINGS 9250 .0 .8 0 .9 1.7 53
WILLOW CREEK PASS 9540 .0 .5 0 .6 1.1 55
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Basin wide percent of average 13 68
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 1.1 9 .5 1.3 38
CASPER MTN. 7900 .2 .9 22 1.6 1.4 114
DEADMAN HILL 10220 1.5 1.2 125 .5 1.4 36
DEER PARK 9700 1.3 1.0 130 2.5 1.3 192
LAPRELE CREEK 8375 .0 .4 0 .5 1.0 50
RENO HILL 8400 .9 1.0 90 1.3 1.4 93
ROACH 9700 .3 .4 75 .7 1.3 54
SAND LAKE 10050 1.0 1.7 59 .9 1.7 53
SOUTH PASS 9040 1.5 .6 250 2.8 1.1 255
WINDY PEAK 7900 .6 .2 300 .9 1.0 90
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Basin wide percent of average 87 95
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .1 0 .6 1.0 60
DIVIDE PEAK 8880 .2 .9 22 2.0 1.6 125
OLD BATTLE 10000 .2 1.5 13 1.4 1.9 74
SANDSTONE RS 8150 .0 .2 0 .6 1.3 46
WHISKEY PARK 8950 .1 .8 12 1.0 1.7 59
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Basin wide percent of average 14 75
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .6 133 1.3 1.0 130
BLIND BULL SUM 8650 1.4 .6 233 2.0 1.2 167
EAST RIM DIVIDE 7930 .2 .2 100 1.8 .8 225
ELKHART PARK G.S. 9400 .9 .3 300 1.8 1.1 164
GROS VENTRE SUMMIT 8750 1.4 .7 200 1.8 1.1 164
GUNSIGHT PASS 9820 .4 -M * 1.1 -M *
KENDALL R.S. 7740 .2 .1 200 1.4 .9 156
LOOMIS PARK 8240 .9 .3 300 2.0 1.0 200
NEW FORK LAKE 8340 .3 .1 300 1.3 .9 144
SNIDER BASIN 8060 .6 .3 200 1.1 .8 138
SPRING CREEK DIVIDE 9000 .6 .6 100 1.2 1.3 92
TRIPLE PEAK 8500 1.1 .4 275 1.7 1.2 142
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Basin wide percent of average 200 154
LOWER GREEN RIVER
HAMS FORK 7840 .0 .1 0 1.3 .8 162
HEWINTA 9519 .0 .5 0 1.1 1.4 79
HICKERSON PARK 9145 .0 .1 0 1.2 1.0 120
HOLE-IN-ROCK 9150 .1 .1 100 1.7 1.0 170
INDIAN CREEK 9425 1.3 .6 217 1.7 1.3 131
KELLEY R.S. 8180 .4 .3 133 1.3 1.1 118
STEEL CREEK PARK 10200 .5 .9 56 1.6 1.3 123
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Basin wide percent of average 88 125
UPPER BEAR RIVER
BUG LAKE 7950 .1 .6 17 1.3 1.3 100
HAYDEN FORK 9212 .1 .5 20 1.3 1.4 93
KELLEY R.S. 8180 .4 .3 133 1.3 1.1 118
LILY LAKE 9156 .0 .6 0 1.7 1.4 121
MONTE CRISTO 8960 .1 .9 11 1.6 1.6 100
SALT RIVER SUMMIT 7760 .0 .0 100 1.1 1.1 100
TRIAL LAKE 9992 .2 1.0 20 1.3 1.5 87
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Basin wide percent of average 23 102
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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.