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 THURSDAY: OCTOBER 10 , 2013
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 * .7 .6 117
BLACK BEAR 8170 1.3 .3 433* 1.5 1.1 136
BLIND BULL SUM 8650 .2 .0 * .6 .6 100
COTTONWOOD CREEK 7670 .4 .0 * .6 .8 75
EAST RIM DIVIDE 7930 .0 .0 * .6 .4 150
GRAND TARGHEE 9260 1.3 1.2 108* 1.4 2.0 70
GRANITE CREEK 6770 .1 .0 * .6 .5 120
GRASSY LAKE 7265 .2 .0 * .8 1.0 80
GROS VENTRE SUMMIT 8750 1.1 .0 * 1.0 .5 200
GUNSIGHT PASS 9820 1.6 .0 * 1.6 .7 229
LEWIS LAKE DIVIDE 7850 .0 .0 * .7 .9 78
PHILLIPS BENCH 8200 .0 .0 * .6 .6 100
SALT RIVER SUMMIT 7760 .0 .0 * .6 .5 120
SNAKE RIVER STATION 6920 .2 .0 * .5 .8 62
SPRING CREEK DIVIDE 9000 .0 .0 * .5 .5 100
THUMB DIVIDE 7980 .0 .0 * .5 .7 71
TOGWOTEE PASS 9580 2.5 .4 625* 1.2 .7 171
TWO OCEAN PLATEAU 9240 2.0 .6 333* 1.2 .9 133
WILLOW CREEK 8380 .0 .0 * 1.1 1.0 110
YOUNTS PEAK 8350 -M .2 * -M .7 *
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Basin Index (%) 436* 110
MADISON-GALLATIN
BLACK BEAR 8170 1.3 .3 433* 1.5 1.1 136
CANYON 7870 .7 .0 * 1.1 .6 183
MADISON PLATEAU 7750 .1 .0 * 1.2 .8 150
WEST YELLOWSTONE 6700 .1 .0 * .6 .6 100
WHISKEY CREEK 6800 .0 .0 * .7 .7 100
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Basin Index (%) 733* 134
YELLOWSTONE
BEARTOOTH LAKE 9360 1.7 .8 212* .6 .6 100
BURNT MTN 5880 -M .0 * 3.0 1.5 200
CANYON 7870 .7 .0 * 1.1 .6 183
COLE CREEK 7850 2.3 .8 288* 2.1 1.2 175
EVENING STAR 9200 2.1 .4 525* 1.3 1.0 130
FISHER CREEK 9100 2.3 .3 767* .9 1.0 90
NORTHEAST ENTRANCE 7350 .0 .0 * .4 .6 67
PARKER PEAK 9400 1.8 .7 257* .7 .9 78
SYLVAN LAKE 8420 .5 .2 250* 1.2 1.0 120
THUMB DIVIDE 7980 .0 .0 * .5 .7 71
TWO OCEAN PLATEAU 9240 2.0 .6 333* 1.2 .9 133
WHITE MILL 8700 1.5 .3 500* .8 .9 89
WOLVERINE 7650 .0 .0 * .7 .6 117
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Basin Index (%) 363* 126
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .6 *
CASTLE CREEK 8400 .2 -M * 1.2 -M *
COLD SPRINGS 9630 1.5 .0 * 2.1 .6 350
DEER PARK 9700 1.7 .3 567* 1.9 .9 211
HOBBS PARK 10100 2.5 .2 1250* 2.2 .7 314
KIRWIN 9550 2.5 .3 833* 1.6 .7 229
LITTLE WARM 9370 1.9 .0 * -M .6 *
OWL CREEK 8975 1.0 .0 * 1.2 .6 200
SOUTH PASS 9040 1.1 .0 * 2.0 .7 286
ST. LAWRENCE ALT 8620 .7 .0 * 1.8 .6 300
TOGWOTEE PASS 9580 2.5 .4 625* 1.2 .7 171
TOWNSEND CREEK 8700 -M .0 * -M .8 *
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Basin Index (%) 1283* 255
BIGHORN BASIN
BALD MTN. 9380 2.4 1.1 218* 1.4 1.0 140
BEAR TRAP MEADOW 8200 1.6 .0 * 2.3 .6 383
BONE SPRINGS DIV 9350 1.7 .9 189* 1.4 1.0 140
GRAVE SPRINGS 8550 2.1 .0 * 2.5 .9 278
KIRWIN 9550 2.5 .3 833* 1.6 .7 229
MARQUETTE 8760 2.7 -M * 3.0 -M *
MIDDLE POWDER 7760 2.9 .1 2900* 2.3 .9 256
OWL CREEK 8975 1.0 .0 * 1.2 .6 200
POWDER RIVER PASS 9480 1.9 .0 * 2.0 .7 286
SHELL CREEK 9580 2.7 1.1 245* 1.7 .9 189
TIMBER CREEK 7950 1.1 .0 * 2.1 .8 262
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Basin Index (%) 569* 228
SHOSHONE RIVER
BLACKWATER 9780 3.6 .8 450* 1.6 1.0 160
EVENING STAR 9200 2.1 .4 525* 1.3 1.0 130
MARQUETTE 8760 2.7 -M * 3.0 -M *
SYLVAN ROAD 7120 .0 .0 * 1.2 .8 150
YOUNTS PEAK 8350 -M .2 * -M .7 *
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Basin Index (%) 475* 146
POWDER RIVER
BEAR TRAP MEADOW 8200 1.6 .0 * 2.3 .6 383
CLOUD PEAK RESERVOIR 9860 2.5 .0 * 2.9 .9 322
GRAVE SPRINGS 8550 2.1 .0 * 2.5 .9 278
HANSEN SAWMILL 8360 2.0 .0 * 2.8 .6 467
MIDDLE POWDER 7760 2.9 .1 2900* 2.3 .9 256
POWDER RIVER PASS 9480 1.9 .0 * 2.0 .7 286
SOLDIER PARK 8720 1.8 -M * 2.7 -M *
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Basin Index (%) 13000* 322
TONGUE RIVER
BIG GOOSE 7990 1.8 .0 * 2.6 .9 289
BONE SPRINGS DIV 9350 1.7 .9 189* 1.4 1.0 140
BURGESS JUNCTION 7880 1.4 .2 700* 1.9 .8 238
DOME LAKE 8880 1.9 .4 475* 2.6 1.0 260
LITTLE GOOSE 8870 2.5 -M * 3.3 -M *
SUCKER CREEK 8880 2.0 .2 1000* 2.3 .9 256
TIE CREEK 6870 1.1 .0 * 2.6 1.1 236
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Basin Index (%) 582* 235
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .7 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.4 .0 * 3.7 .9 411
NORTH RAPID CREEK 6130 3.6 .0 * 3.7 .8 462
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Basin Index (%) * 435
UPPER N. PLATTE
ARAPAHO RIDGE 10960 .7 .2 350* 1.3 .8 162
BLACKHALL MTN 9820 .9 -M * 1.5 -M *
COLUMBINE 9160 .1 .0 * 1.0 .9 111
DIVIDE PEAK 8880 .1 .0 * 1.6 1.1 145
JOE WRIGHT 10120 .0 .0 * 1.4 1.0 140
LAPRELE CREEK 8375 .1 .0 * 1.3 .7 186
MED BOW 10500 .8 -M * 1.4 -M *
NORTH FRENCH CREEK 10130 .2 .2 100* 1.1 1.0 110
NEVER SUMMER 10280 .6 .3 200* 1.1 -M *
OLD BATTLE 10000 .9 .2 450* 1.1 1.4 79
RAWAH 9020 .4 .0 * 1.9 .8 238
SAGE CREEK BASIN 7850 .3 .0 * 1.4 .9 156
SAND LAKE 10050 1.3 .2 650* 1.6 1.0 160
SOUTH BRUSH CREEK 8440 .2 .0 * 1.3 .8 162
TOWER 10500 .3 .5 60* 1.4 1.3 108
WEBBER SPRINGS 9250 .0 .0 * 1.3 1.1 118
WILLOW CREEK PASS 9540 1.0 .0 * 1.3 .5 260
ZIRKEL 9340 .1 .0 * .6 1.4 43
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Basin Index (%) 394* 133
SWEETWATER
DEER PARK 9700 1.7 .3 567* 1.9 .9 211
LARSEN CREEK 9000 .3 -M * 1.3 -M *
SOUTH PASS 9040 1.1 .0 * 2.0 .7 286
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Basin Index (%) 933* 244
LOWER N. PLATTE
CASPER MTN. 7900 -M .0 * 2.5 .9 278
LAPRELE CREEK 8375 .1 .0 * 1.3 .7 186
RENO HILL 8400 3.7 .0 * -M .8 *
WINDY PEAK 7900 .2 .0 * 1.7 .6 283
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Basin Index (%) * 250
LARAMIE RIVER
BROOKLYN LAKE 10240 .1 .0 * .7 .6 117
CINNABAR PARK 9574 .1 .0 * .9 .8 112
CROW CREEK 8330 .0 .0 * .9 .4 225
DEADMAN HILL 10220 .6 .0 * 1.2 .7 171
RAWAH 9020 .4 .0 * 1.9 .8 238
ROACH 9700 -M .0 * -M .7 *
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Basin Index (%) * 170
S. PLATTE
BLACK MOUNTAIN 8920 .2 -M * 1.1 -M *
CROW CREEK 8330 .0 .0 * .9 .4 225
DEADMAN HILL 10220 .6 .0 * 1.2 .7 171
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Basin Index (%) * 191
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * .9 .7 129
DIVIDE PEAK 8880 .1 .0 * 1.6 1.1 145
ELK RIVER 8700 .2 .0 * 1.1 .9 122
LITTLE SNAKE RIVER 8915 .0 .0 * 1.3 1.4 93
OLD BATTLE 10000 .9 .2 450* 1.1 1.4 79
SAGE CREEK BASIN 7850 .3 .0 * 1.4 .9 156
SANDSTONE RS 8150 .2 .0 * .9 .8 112
WHISKEY PARK 8950 .1 .0 * 1.1 1.0 110
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Basin Index (%) 900* 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .0 * .8 .5 160
BLIND BULL SUM 8650 .2 .0 * .6 .6 100
EAST RIM DIVIDE 7930 .0 .0 * .6 .4 150
ELKHART PARK G.S. 9400 .6 .0 * 1.0 .6 167
GROS VENTRE SUMMIT 8750 1.1 .0 * 1.0 .5 200
GUNSIGHT PASS 9820 1.6 .0 * 1.6 .7 229
KENDALL R.S. 7740 .0 .0 * .7 .4 175
LOOMIS PARK 8240 .1 .0 * .8 .5 160
NEW FORK LAKE 8340 .1 .0 * .6 .4 150
POCKET CREEK 9360 1.3 -M * 1.4 -M *
SNIDER BASIN 8060 .1 .0 * .5 .3 167
SPRING CREEK DIVIDE 9000 .0 .0 * .5 .5 100
TRIPLE PEAK 8500 .0 .0 * .5 .6 83
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Basin Index (%) * 153
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * .5 -M *
BUCK PASTURE 9700 .0 -M * .4 -M *
EF BLACKS FORK GS 9360 .0 -M * -M -M *
HAMS FORK 7840 .0 .0 * .5 .4 125
HEWINTA 9519 .1 .0 * .6 .7 86
HICKERSON PARK 9145 .3 .0 * .7 .6 117
HOLE-IN-ROCK 9150 .0 .0 * .4 .6 67
INDIAN CREEK 9425 .0 .0 * .5 .5 100
KELLEY R.S. 8180 .1 .0 * .6 .5 120
SPIRIT LK 10235 .2 -M * .7 -M *
STEEL CREEK PARK 10200 .0 .0 * .7 .8 88
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Basin Index (%) * 98
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * .5 -M *
BUG LAKE 7950 .5 .0 * .8 .6 133
BURTS MILLER RANCH 8000 .2 -M * .4 -M *
CHALK CREEK #1 8993 .2 .0 * 1.1 .9 122
HAYDEN FORK 9212 .0 .0 * .8 .8 100
KELLEY R.S. 8180 .1 .0 * .6 .5 120
LILY LAKE 9156 .0 .0 * .7 .8 88
MONTE CRISTO 8960 .3 .0 * .5 .8 62
SALT RIVER SUMMIT 7760 .0 .0 * .6 .5 120
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Basin Index (%) * 104
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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.
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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.
