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 SATURDAY: OCTOBER 21 , 2006
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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 .3 0* 2.2 1.4 157
COTTONWOOD CREEK 7600 1.0 .4 250* 2.9 2.0 145
GRANITE CREEK 6770 .1 .3 33* 2.4 1.2 200
GRASSY LAKE 7265 1.5 .7 214* 5.3 2.3 230
GROS VENTRE SUMMIT 8750 1.2 .9 133* 2.4 1.2 200
LEWIS LAKE DIVIDE 7850 1.1 .5 220* 3.8 2.1 181
PHILLIPS BENCH 8200 1.0 .7 143* 3.4 1.6 212
SALT RIVER SUMMIT 7600 .3 .1 300* 1.9 1.3 146
SNAKE RIVER STATION 6920 .4 .2 200* 4.2 1.5 280
SPRING CREEK DIVIDE 9000 1.0 .8 125* 2.1 1.7 124
THUMB DIVIDE 7980 .2 .4 50* 2.1 1.4 150
TOGWOTEE PASS 9580 2.4 1.6 150* 3.0 1.9 158
TWO OCEAN PLATEAU 9240 1.1 1.9 58* 2.5 2.1 119
WILLOW CREEK 8450 1.2 .9 133* 3.3 2.5 132
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Basin wide percent of average 129* 171
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.9 1.8 106* 2.3 1.4 164
BLACK BEAR 8170 2.2 1.5 147* 5.0 2.3 217
CANYON 8090 .8 .4 200* 2.8 1.2 233
FISHER CREEK 9100 -M 1.6 * -M 2.2 *
MADISON PLATEAU 7750 .7 .9 78* 2.8 1.7 165
NORTHEAST ENTRANCE 7350 .1 .2 50* 3.3 1.0 330
PARKER PEAK 9400 1.3 1.7 76* 2.7 1.5 180
SYLVAN LAKE 8420 .9 1.3 69* 3.9 1.7 229
THUMB DIVIDE 7980 .2 .4 50* 2.1 1.4 150
TWO OCEAN PLATEAU 9240 1.1 1.9 58* 2.5 2.1 119
WHISKEY CREEK 6800 .3 .3 100* -M 1.5 *
WHITE MILL 8700 2.1 1.2 175* 3.6 1.8 200
WOLVERINE 7650 .1 .2 50* 1.7 1.2 142
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Basin wide percent of average 99* 189
WIND RIVER
BURROUGHS CREEK 8750 1.4 .5 280* 2.2 1.1 200
COLD SPRINGS 9630 .3 .5 60* 1.1 1.3 85
DEER PARK 9700 1.1 1.5 73* 2.3 1.7 135
HOBBS PARK 10100 1.1 1.3 85* 1.3 1.4 93
LITTLE WARM 9370 .9 .6 150* .9 1.2 75
SOUTH PASS 9040 .8 .8 100* 2.3 1.4 164
ST. LAWRENCE ALT 8620 .6 .4 150* 1.2 1.2 100
TOGWOTEE PASS 9580 2.4 1.6 150* 3.0 1.9 158
TOWNSEND CREEK 8700 1.2 .6 200* 2.4 1.4 171
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Basin wide percent of average 126* 133
BIGHORN BASIN
BALD MTN. 9380 4.2 2.0 210* 2.9 1.6 181
BEAR TRAP MEADOW 8200 .1 .3 33* .7 1.2 58
BLACKWATER 9780 1.3 2.1 62* 2.0 1.8 111
BONE SPRINGS DIV 9350 3.5 1.8 194* 2.4 1.7 141
EVENING STAR 9200 1.9 1.8 106* 3.1 1.9 163
GRAVE SPRINGS 8550 .3 .6 50* .8 1.4 57
KIRWIN 9550 1.2 1.2 100* 1.6 1.2 133
MARQUETTE 8760 .4 1.3 31 1.3 1.5 87
MIDDLE POWDER 7760 .8 .8 100* 1.0 1.7 59
OWL CREEK 8975 1.2 .5 240* 1.7 .8 212
POWDER RIVER PASS 9480 .7 .8 87* 1.3 1.3 100
SHELL CREEK 9580 3.6 2.0 180 1.8 1.4 129
SYLVAN LAKE 8420 .9 1.3 69* 3.9 1.7 229
SYLVAN ROAD 7120 .4 .2 200* 2.7 1.4 193
TIMBER CREEK 7950 .0 .5 0* 1.5 1.1 136
YOUNTS PEAK 8350 .6 .9 67* 1.6 1.2 133
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Basin wide percent of average 117* 132
SHOSHONE RIVER
BLACKWATER 9780 1.3 2.1 62* 2.0 1.8 111
EVENING STAR 9200 1.9 1.8 106* 3.1 1.9 163
KIRWIN 9550 1.2 1.2 100* 1.6 1.2 133
MARQUETTE 8760 .4 1.3 31 1.3 1.5 87
SYLVAN LAKE 8420 .9 1.3 69* 3.9 1.7 229
SYLVAN ROAD 7120 .4 .2 200* 2.7 1.4 193
YOUNTS PEAK 8350 .6 .9 67* 1.6 1.2 133
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Basin wide percent of average 76* 151
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .3 33* .7 1.2 58
BIG GOOSE 7990 .4 .5 80* .8 1.4 57
BONE SPRINGS DIV 9350 3.5 1.8 194* 2.4 1.7 141
BURGESS JUNCTION 7880 .9 1.0 90* 2.0 1.5 133
CLOUD PEAK RESERVOIR 9860 .6 .8 75* 1.1 1.7 65
DOME LAKE 8880 .7 1.1 64* 1.4 1.7 82
GRAVE SPRINGS 8550 .3 .6 50* .8 1.4 57
HANSEN SAWMILL 8360 .4 .4 100* .3 1.2 25
MIDDLE POWDER 7760 .8 .8 100* 1.0 1.7 59
POWDER RIVER PASS 9480 .7 .8 87* 1.3 1.3 100
SUCKER CREEK 8880 1.4 .8 175* 1.9 1.6 119
TIE CREEK 6870 .3 .3 100* 2.3 1.7 135
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Basin wide percent of average 110* 88
BELLE FOURCHE
BLIND PARK 6890 -M .2 * 1.2 1.7 71
COLE CANYON 5910 .0 .3 0* 1.2 -M *
NORTH RAPID CREEK 6130 .1 .2 50* .8 1.7 47
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Basin wide percent of average 20* 59
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.5 .3 500* 3.5 1.6 219
DIVIDE PEAK 8860 3.0 1.1 273* 4.6 1.8 256
ELK RIVER 8700 1.6 .3 533* 3.1 1.5 207
JOE WRIGHT 10120 1.9 1.5 127* 3.0 2.3 130
NORTH FRENCH CREEK 10130 3.0 2.1 143* 3.9 2.3 170
OLD BATTLE 9920 3.7 1.8 206* 4.9 2.4 204
SAGE CREEK BASIN 7850 2.6 .5 520* 3.2 1.0 320
SOUTH BRUSH CREEK 8440 1.5 .4 375* 2.1 1.7 124
TOWER 10500 4.2 2.0 210* 5.8 2.6 223
WEBBER SPRINGS 9250 2.4 1.0 240* 4.5 2.1 214
WILLOW CREEK PASS 9540 1.5 .6 250* 1.4 1.4 100
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Basin wide percent of average 232* 193
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 2.2 1.4 157* 2.8 1.7 165
CASPER MTN. 7850 .7 1.0 70* 1.1 1.7 65
DEADMAN HILL 10220 1.0 1.4 71* 2.0 1.7 118
DEER PARK 9700 1.1 1.5 73* 2.3 1.7 135
LAPRELE CREEK 8375 .8 .6 133* 1.1 1.3 85
RENO HILL 8500 1.5 1.1 136* 2.1 1.7 124
ROACH 9700 2.3 .7 329* 3.1 1.5 207
SAND LAKE 10050 2.8 2.0 140* 3.4 2.1 162
SOUTH PASS 9040 .8 .8 100* 2.3 1.4 164
WINDY PEAK 7900 1.0 .3 333* 1.1 1.2 92
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Basin wide percent of average 131* 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 .2 200* 2.5 1.3 192
DIVIDE PEAK 8860 3.0 1.1 273* 4.6 1.8 256
OLD BATTLE 9920 3.7 1.8 206* 4.9 2.4 204
SANDSTONE RS 8150 .8 .3 267* 2.9 1.5 193
WHISKEY PARK 8950 2.1 1.0 210* 4.1 1.9 216
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Basin wide percent of average 227* 213
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .7 129* 1.6 1.2 133
BLIND BULL SUM 8900 1.1 .9 122* 2.0 1.5 133
EAST RIM DIVIDE 7930 .0 .2 0* 1.7 .9 189
ELKHART PARK G.S. 9400 .3 .4 75* 2.0 1.3 154
GROS VENTRE SUMMIT 8750 1.2 .9 133* 2.4 1.2 200
KENDALL R.S. 7740 -M .2 * -M 1.0 *
LOOMIS PARK 8240 .3 .5 60* 2.1 1.2 175
NEW FORK LAKE 8340 .4 .2 200* 1.1 1.0 110
SNIDER BASIN 8060 .5 .3 167* 1.4 1.1 127
SPRING CREEK DIVIDE 9000 1.0 .8 125* 2.1 1.7 124
TRIPLE PEAK 8500 .9 .6 150* 2.2 1.5 147
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Basin wide percent of average 120* 148
LOWER GREEN RIVER
HAMS FORK 7840 .2 .2 100* 1.4 1.0 140
HEWINTA 9500 .6 .6 100* 2.7 1.6 169
HICKERSON PARK 9100 .9 .2 450* 1.9 1.2 158
HOLE-IN-ROCK 9150 .7 .2 350* 2.2 1.1 200
INDIAN CREEK 9425 .9 .8 112* 2.0 1.7 118
KELLEY R.S. 8180 .4 .5 80* 1.7 1.4 121
STEEL CREEK PARK 10100 1.5 1.1 136* 2.8 1.5 187
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Basin wide percent of average 144* 155
UPPER BEAR RIVER
BUG LAKE 7950 .8 .8 100* 1.8 1.5 120
HAYDEN FORK 9100 .3 .6 50* 4.0 1.6 250
KELLEY R.S. 8180 .4 .5 80* 1.7 1.4 121
LILY LAKE 9050 .6 .6 100* 2.7 1.6 169
MONTE CRISTO 8960 .9 1.1 82* 3.4 1.9 179
SALT RIVER SUMMIT 7600 .3 .1 300* 1.9 1.3 146
TRIAL LAKE 9960 .7 1.2 58* 3.6 1.9 189
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Basin wide percent of average 82* 171
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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.