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 8 , 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 .5 140
BLACK BEAR 8170 1.3 .1 1300* 1.5 1.0 150
BLIND BULL SUM 8650 .5 .0 * .6 .5 120
COTTONWOOD CREEK 7670 .4 .0 * .6 .7 86
EAST RIM DIVIDE 7930 .1 .0 * .7 .4 175
GRAND TARGHEE 9260 1.3 1.1 118* 1.4 1.7 82
GRANITE CREEK 6770 .1 .0 * .5 .4 125
GRASSY LAKE 7265 .1 .0 * .7 .9 78
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .4 225
GUNSIGHT PASS 9820 1.6 .0 * 1.6 .7 229
LEWIS LAKE DIVIDE 7850 .1 .0 * .7 .8 88
PHILLIPS BENCH 8200 .0 .0 * .6 .5 120
SALT RIVER SUMMIT 7760 .0 .0 * .6 .4 150
SNAKE RIVER STATION 6920 .2 .0 * .5 .7 71
SPRING CREEK DIVIDE 9000 .2 .0 * .5 .5 100
THUMB DIVIDE 7980 .0 .0 * .6 .7 86
TOGWOTEE PASS 9580 2.5 .1 2500* 1.2 .6 200
TWO OCEAN PLATEAU 9240 2.1 .4 525* 1.2 .8 150
WILLOW CREEK 8380 .0 .0 * 1.1 .9 122
YOUNTS PEAK 8350 -M .1 * -M .6 *
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Basin Index (%) 682* 124
MADISON-GALLATIN
BLACK BEAR 8170 1.3 .1 1300* 1.5 1.0 150
CANYON 7870 .8 .0 * 1.1 .5 220
MADISON PLATEAU 7750 .4 .0 * .9 .7 129
WEST YELLOWSTONE 6700 .1 .0 * .5 .5 100
WHISKEY CREEK 6800 .0 .0 * .8 .6 133
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Basin Index (%) 2600* 145
YELLOWSTONE
BEARTOOTH LAKE 9360 1.7 .6 283* .9 .5 180
BURNT MTN 5880 -M .0 * 3.2 1.3 246
CANYON 7870 .8 .0 * 1.1 .5 220
COLE CREEK 7850 2.6 .7 371* 2.2 1.0 220
EVENING STAR 9200 2.2 .2 1100* 1.4 .8 175
FISHER CREEK 9100 2.4 .0 * .9 .8 112
NORTHEAST ENTRANCE 7350 .0 .0 * .5 .5 100
PARKER PEAK 9400 1.9 .5 380* .7 .8 88
SYLVAN LAKE 8420 .6 .0 * 1.2 .8 150
THUMB DIVIDE 7980 .0 .0 * .6 .7 86
TWO OCEAN PLATEAU 9240 2.1 .4 525* 1.2 .8 150
WHITE MILL 8700 1.6 .0 * 1.0 .7 143
WOLVERINE 7650 .0 .0 * .6 .5 120
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Basin Index (%) 662* 160
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .5 *
CASTLE CREEK 8400 .1 -M * 1.1 -M *
COLD SPRINGS 9630 1.4 .0 * 2.0 .6 333
DEER PARK 9700 1.9 .0 * 2.1 .8 262
HOBBS PARK 10100 2.2 .0 * 2.1 .6 350
KIRWIN 9550 2.4 .1 2400* 1.5 .6 250
LITTLE WARM 9370 2.0 .0 * -M .5 *
OWL CREEK 8975 1.1 .0 * 1.1 .4 275
SOUTH PASS 9040 1.4 .0 * 2.0 .6 333
ST. LAWRENCE ALT 8620 1.0 .0 * 2.0 .5 400
TOGWOTEE PASS 9580 2.5 .1 2500* 1.2 .6 200
TOWNSEND CREEK 8700 -M .0 * -M .6 *
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Basin Index (%) 7950* 298
BIGHORN BASIN
BALD MTN. 9380 2.4 .8 300* 1.5 .7 214
BEAR TRAP MEADOW 8200 2.1 .0 * 2.4 .4 600
BONE SPRINGS DIV 9350 1.8 .7 257* 1.5 .8 188
GRAVE SPRINGS 8550 2.4 .0 * 2.5 .8 312
KIRWIN 9550 2.4 .1 2400* 1.5 .6 250
MARQUETTE 8760 2.8 -M * 3.0 -M *
MIDDLE POWDER 7760 3.1 .0 * 2.4 .7 343
OWL CREEK 8975 1.1 .0 * 1.1 .4 275
POWDER RIVER PASS 9480 2.1 .0 * 2.1 .6 350
SHELL CREEK 9580 2.8 .9 311* 1.7 .7 243
TIMBER CREEK 7950 1.3 .0 * 2.0 .7 286
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Basin Index (%) 860* 292
SHOSHONE RIVER
BLACKWATER 9780 3.7 .6 617* 1.6 .8 200
EVENING STAR 9200 2.2 .2 1100* 1.4 .8 175
MARQUETTE 8760 2.8 -M * 3.0 -M *
SYLVAN ROAD 7120 -M .0 * 1.2 .7 171
YOUNTS PEAK 8350 -M .1 * -M .6 *
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Basin Index (%) 738* 183
POWDER RIVER
BEAR TRAP MEADOW 8200 2.1 .0 * 2.4 .4 600
CLOUD PEAK RESERVOIR 9860 2.7 .0 * 3.1 .7 443
GRAVE SPRINGS 8550 2.4 .0 * 2.5 .8 312
HANSEN SAWMILL 8360 2.3 .0 * -M .5 *
MIDDLE POWDER 7760 3.1 .0 * 2.4 .7 343
POWDER RIVER PASS 9480 2.1 .0 * 2.1 .6 350
SOLDIER PARK 8720 2.1 -M * 2.7 -M *
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Basin Index (%) * 391
TONGUE RIVER
BIG GOOSE 7990 2.1 .0 * 2.7 .8 338
BONE SPRINGS DIV 9350 1.8 .7 257* 1.5 .8 188
BURGESS JUNCTION 7880 1.6 .1 1600* 2.0 .7 286
DOME LAKE 8880 2.2 .2 1100* 2.7 .8 338
LITTLE GOOSE 8870 2.8 -M * 3.3 -M *
SUCKER CREEK 8880 2.3 .1 2300* 2.4 .7 343
TIE CREEK 6870 1.7 .0 * 2.6 .9 289
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Basin Index (%) 1064* 296
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .6 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * 3.7 .8 462
NORTH RAPID CREEK 6130 -M .0 * -M .6 *
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Basin Index (%) * 462
UPPER N. PLATTE
ARAPAHO RIDGE 10960 .9 .1 900* 1.2 .6 200
BLACKHALL MTN 9820 1.0 -M * 1.6 -M *
COLUMBINE 9160 .1 .0 * 1.0 .7 143
DIVIDE PEAK 8880 .9 .0 * 1.7 .9 189
JOE WRIGHT 10120 .0 .0 * 1.3 .8 162
LAPRELE CREEK 8375 .8 .0 * 1.3 .5 260
MED BOW 10500 .8 -M * 1.3 -M *
NORTH FRENCH CREEK 10130 .6 .1 600* 1.1 .8 138
NEVER SUMMER 10280 .8 .0 * 1.1 -M *
OLD BATTLE 10000 1.1 .0 * 1.2 1.1 109
RAWAH 9020 1.2 .0 * 1.8 .6 300
SAGE CREEK BASIN 7850 1.1 .0 * 1.4 .7 200
SAND LAKE 10050 1.4 .0 * 1.6 .8 200
SOUTH BRUSH CREEK 8440 .5 .0 * 1.3 .6 217
TOWER 10500 .9 .0 * 1.3 1.1 118
WEBBER SPRINGS 9250 .4 .0 * 1.3 .8 162
WILLOW CREEK PASS 9540 1.2 .0 * 1.3 .4 325
ZIRKEL 9340 .1 .0 * .6 1.1 55
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Basin Index (%) 6000* 169
SWEETWATER
DEER PARK 9700 1.9 .0 * 2.1 .8 262
LARSEN CREEK 9000 .3 -M * 1.3 -M *
SOUTH PASS 9040 1.4 .0 * 2.0 .6 333
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Basin Index (%) * 293
LOWER N. PLATTE
CASPER MTN. 7900 -M .0 * 2.5 .6 417
LAPRELE CREEK 8375 .8 .0 * 1.3 .5 260
RENO HILL 8400 3.9 .0 * -M .6 *
WINDY PEAK 7900 1.1 .0 * 1.7 .4 425
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Basin Index (%) * 367
LARAMIE RIVER
BROOKLYN LAKE 10240 .2 .0 * .6 .5 120
CINNABAR PARK 9574 .3 .0 * .9 .6 150
CROW CREEK 8330 .0 .0 * .9 .3 300
DEADMAN HILL 10220 .9 .0 * 1.2 .5 240
RAWAH 9020 1.2 .0 * 1.8 .6 300
ROACH 9700 -M .0 * -M .5 *
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Basin Index (%) * 216
S. PLATTE
BLACK MOUNTAIN 8920 .9 -M * 1.1 -M *
CROW CREEK 8330 .0 .0 * .9 .3 300
DEADMAN HILL 10220 .9 .0 * 1.2 .5 240
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Basin Index (%) * 262
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 1.0 .6 167
DIVIDE PEAK 8880 .9 .0 * 1.7 .9 189
ELK RIVER 8700 .2 .0 * 1.2 .7 171
LITTLE SNAKE RIVER 8915 .0 .0 * 1.3 1.0 130
OLD BATTLE 10000 1.1 .0 * 1.2 1.1 109
SAGE CREEK BASIN 7850 1.1 .0 * 1.4 .7 200
SANDSTONE RS 8150 .3 .0 * .9 .7 129
WHISKEY PARK 8950 .3 .0 * 1.2 .8 150
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Basin Index (%) * 152
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .0 * .8 .4 200
BLIND BULL SUM 8650 .5 .0 * .6 .5 120
EAST RIM DIVIDE 7930 .1 .0 * .7 .4 175
ELKHART PARK G.S. 9400 .8 .0 * 1.1 .5 220
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .4 225
GUNSIGHT PASS 9820 1.6 .0 * 1.6 .7 229
KENDALL R.S. 7740 .0 .0 * .7 .4 175
LOOMIS PARK 8240 .1 .0 * .7 .4 175
NEW FORK LAKE 8340 .1 .0 * .6 .4 150
POCKET CREEK 9360 1.4 -M * 1.4 -M *
SNIDER BASIN 8060 .0 .0 * .4 .2 200
SPRING CREEK DIVIDE 9000 .2 .0 * .5 .5 100
TRIPLE PEAK 8500 .0 .0 * .6 .5 120
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Basin Index (%) * 174
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 * .6 -M *
HAMS FORK 7840 .0 .0 * .5 .3 167
HEWINTA 9519 .1 .0 * .6 .6 100
HICKERSON PARK 9145 .3 .0 * .7 .5 140
HOLE-IN-ROCK 9150 .0 .0 * .5 .5 100
INDIAN CREEK 9425 .0 .0 * .5 .5 100
KELLEY R.S. 8180 .1 .0 * .5 .4 125
SPIRIT LK 10235 .2 -M * .6 -M *
STEEL CREEK PARK 10200 .0 .0 * .6 .6 100
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Basin Index (%) * 115
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 .6 .0 * 1.1 .8 138
HAYDEN FORK 9212 .0 .0 * .8 .7 114
KELLEY R.S. 8180 .1 .0 * .5 .4 125
LILY LAKE 9156 .1 .0 * .7 .6 117
MONTE CRISTO 8960 .1 .0 * .5 .7 71
SALT RIVER SUMMIT 7760 .0 .0 * .6 .4 150
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Basin Index (%) * 119
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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.
