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 FRIDAY: OCTOBER 11 , 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 .1 .0 * .6 .6 100
BLACK BEAR 8170 1.3 .4 325* 1.6 1.2 133
BLIND BULL SUM 8650 .2 .0 * .7 .6 117
COTTONWOOD CREEK 7670 .5 .0 * .9 .8 112
EAST RIM DIVIDE 7930 .1 .0 * .7 .4 175
GRAND TARGHEE 9260 1.7 1.2 142* 1.8 2.0 90
GRANITE CREEK 6770 .1 .0 * .6 .5 120
GRASSY LAKE 7265 .2 .0 * 1.0 1.1 91
GROS VENTRE SUMMIT 8750 1.2 .0 * 1.1 .5 220
GUNSIGHT PASS 9820 1.7 .0 * 1.7 .8 212
LEWIS LAKE DIVIDE 7850 .1 .0 * .8 .9 89
PHILLIPS BENCH 8200 .0 .0 * .8 .7 114
SALT RIVER SUMMIT 7760 .1 .0 * .9 .5 180
SNAKE RIVER STATION 6920 .2 .0 * .7 .8 88
SPRING CREEK DIVIDE 9000 .1 .0 * .5 .6 83
THUMB DIVIDE 7980 .0 .0 * .7 .8 88
TOGWOTEE PASS 9580 2.8 .5 560* 1.5 .8 188
TWO OCEAN PLATEAU 9240 2.3 .8 288* 1.4 1.0 140
WILLOW CREEK 8380 .2 .0 * 1.6 1.1 145
YOUNTS PEAK 8350 -M .3 * -M .8 *
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Basin Index (%) 445* 125
MADISON-GALLATIN
BLACK BEAR 8170 1.3 .4 325* 1.6 1.2 133
CANYON 7870 .7 .0 * 1.1 .6 183
MADISON PLATEAU 7750 .0 .2 0* 1.2 .9 133
WEST YELLOWSTONE 6700 .1 .0 * .7 .7 100
WHISKEY CREEK 6800 .0 .0 * 1.0 .8 125
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Basin Index (%) 350* 133
YELLOWSTONE
BEARTOOTH LAKE 9360 1.7 .8 212* .8 .7 114
BURNT MTN 5880 -M .0 * 3.2 1.7 188
CANYON 7870 .7 .0 * 1.1 .6 183
COLE CREEK 7850 2.4 .8 300* 2.0 1.3 154
EVENING STAR 9200 2.2 .6 367* 1.4 1.1 127
FISHER CREEK 9100 2.3 .5 460* .8 1.1 73
NORTHEAST ENTRANCE 7350 .1 .0 * .5 .7 71
PARKER PEAK 9400 2.2 .8 275* 1.1 1.0 110
SYLVAN LAKE 8420 .5 .2 250* 1.4 1.1 127
THUMB DIVIDE 7980 .0 .0 * .7 .8 88
TWO OCEAN PLATEAU 9240 2.3 .8 288* 1.4 1.0 140
WHITE MILL 8700 1.5 .4 375* .9 .9 100
WOLVERINE 7650 .0 .0 * .8 .7 114
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Basin Index (%) 324* 127
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .7 *
CASTLE CREEK 8400 .1 -M * 1.3 -M *
COLD SPRINGS 9630 1.5 .0 * 2.1 .7 300
DEER PARK 9700 2.0 .4 500* 2.2 1.0 220
HOBBS PARK 10100 2.5 .3 833* 2.4 .8 300
KIRWIN 9550 2.5 .4 625* 1.7 .7 243
LITTLE WARM 9370 1.9 .1 1900* 2.4 .6 400
OWL CREEK 8975 .9 .0 * 1.3 .6 217
SOUTH PASS 9040 1.3 .0 * 2.1 .7 300
ST. LAWRENCE ALT 8620 .7 .0 * 1.9 .7 271
TOGWOTEE PASS 9580 2.8 .5 560* 1.5 .8 188
TOWNSEND CREEK 8700 -M .0 * -M .8 *
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Basin Index (%) 947* 267
BIGHORN BASIN
BALD MTN. 9380 2.6 1.3 200* 1.5 1.1 136
BEAR TRAP MEADOW 8200 1.6 .0 * 2.4 .7 343
BONE SPRINGS DIV 9350 1.8 .9 200* 1.4 1.1 127
GRAVE SPRINGS 8550 2.1 .0 * 2.5 .9 278
KIRWIN 9550 2.5 .4 625* 1.7 .7 243
MARQUETTE 8760 2.8 -M * 3.1 -M *
MIDDLE POWDER 7760 3.0 .2 1500* 2.5 .9 278
OWL CREEK 8975 .9 .0 * 1.3 .6 217
POWDER RIVER PASS 9480 1.9 .0 * 2.1 .8 262
SHELL CREEK 9580 2.8 1.2 233* 1.7 1.0 170
TIMBER CREEK 7950 1.1 .0 * 2.1 .8 262
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Basin Index (%) 508* 223
SHOSHONE RIVER
BLACKWATER 9780 3.8 .8 475* 1.8 1.0 180
EVENING STAR 9200 2.2 .6 367* 1.4 1.1 127
MARQUETTE 8760 2.8 -M * 3.1 -M *
SYLVAN ROAD 7120 .1 .0 * 1.4 .8 175
YOUNTS PEAK 8350 -M .3 * -M .8 *
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Basin Index (%) 436* 159
POWDER RIVER
BEAR TRAP MEADOW 8200 1.6 .0 * 2.4 .7 343
CLOUD PEAK RESERVOIR 9860 2.6 .0 * 3.1 1.0 310
GRAVE SPRINGS 8550 2.1 .0 * 2.5 .9 278
HANSEN SAWMILL 8360 1.9 .0 * 2.8 .7 400
MIDDLE POWDER 7760 3.0 .2 1500* 2.5 .9 278
POWDER RIVER PASS 9480 1.9 .0 * 2.1 .8 262
SOLDIER PARK 8720 1.6 -M * 2.7 -M *
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Basin Index (%) 6550* 308
TONGUE RIVER
BIG GOOSE 7990 1.9 .0 * 2.7 1.0 270
BONE SPRINGS DIV 9350 1.8 .9 200* 1.4 1.1 127
BURGESS JUNCTION 7880 1.4 .2 700* 2.0 1.0 200
DOME LAKE 8880 2.0 .4 500* 2.7 1.0 270
LITTLE GOOSE 8870 2.5 -M * 3.5 -M *
SUCKER CREEK 8880 2.1 .2 1050* 2.4 1.0 240
TIE CREEK 6870 .8 .0 * 2.7 1.1 245
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Basin Index (%) 588* 224
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .9 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.2 .0 * 3.7 .9 411
NORTH RAPID CREEK 6130 3.5 .0 * 3.9 .8 488
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Basin Index (%) * 447
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.2 .2 600* 1.7 1.0 170
BLACKHALL MTN 9820 1.5 -M * 2.3 -M *
COLUMBINE 9160 .3 .0 * 1.3 1.0 130
DIVIDE PEAK 8880 .9 .0 * 2.5 1.2 208
JOE WRIGHT 10120 .1 .0 * 2.0 1.1 182
LAPRELE CREEK 8375 .2 .0 * 1.4 .7 200
MED BOW 10500 1.6 -M * 2.3 -M *
NORTH FRENCH CREEK 10130 1.2 .3 400* 2.2 1.1 200
NEVER SUMMER 10280 1.0 .3 333* 1.5 -M *
OLD BATTLE 10000 1.7 .4 425* 1.9 1.5 127
RAWAH 9020 1.0 .0 * 2.6 .8 325
SAGE CREEK BASIN 7850 .5 .0 * 1.8 .9 200
SAND LAKE 10050 1.9 .3 633* 2.2 1.1 200
SOUTH BRUSH CREEK 8440 1.0 .0 * 2.1 .8 262
TOWER 10500 1.1 .6 183* 1.8 1.4 129
WEBBER SPRINGS 9250 .4 .0 * 1.8 1.2 150
WILLOW CREEK PASS 9540 1.0 .0 * 1.4 .6 233
ZIRKEL 9340 -M .0 * 1.0 1.6 62
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Basin Index (%) 643* 173
SWEETWATER
DEER PARK 9700 2.0 .4 500* 2.2 1.0 220
LARSEN CREEK 9000 .5 -M * 1.6 -M *
SOUTH PASS 9040 1.3 .0 * 2.1 .7 300
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Basin Index (%) 825* 253
LOWER N. PLATTE
CASPER MTN. 7900 -M .1 * -M .9 *
LAPRELE CREEK 8375 .2 .0 * 1.4 .7 200
RENO HILL 8400 4.4 .0 * -M .9 *
WINDY PEAK 7900 .4 .0 * 1.9 .7 271
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Basin Index (%) * 236
LARAMIE RIVER
BROOKLYN LAKE 10240 .6 .0 * .8 .7 114
CINNABAR PARK 9574 .5 .0 * 1.4 .9 156
CROW CREEK 8330 .5 .0 * 1.5 .6 250
DEADMAN HILL 10220 .9 .0 * 1.6 .7 229
RAWAH 9020 1.0 .0 * 2.6 .8 325
ROACH 9700 -M .0 * -M .8 *
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Basin Index (%) * 214
S. PLATTE
BLACK MOUNTAIN 8920 .2 -M * 1.2 -M *
CROW CREEK 8330 .5 .0 * 1.5 .6 250
DEADMAN HILL 10220 .9 .0 * 1.6 .7 229
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Basin Index (%) * 238
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 1.4 .7 200
DIVIDE PEAK 8880 .9 .0 * 2.5 1.2 208
ELK RIVER 8700 .3 .0 * 1.3 1.0 130
LITTLE SNAKE RIVER 8915 .6 .0 * 2.0 1.5 133
OLD BATTLE 10000 1.7 .4 425* 1.9 1.5 127
SAGE CREEK BASIN 7850 .5 .0 * 1.8 .9 200
SANDSTONE RS 8150 .7 .0 * 1.5 .8 188
WHISKEY PARK 8950 .9 .0 * 2.0 1.0 200
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Basin Index (%) 1400* 167
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .0 * .8 .6 133
BLIND BULL SUM 8650 .2 .0 * .7 .6 117
EAST RIM DIVIDE 7930 .1 .0 * .7 .4 175
ELKHART PARK G.S. 9400 .5 .0 * 1.0 .6 167
GROS VENTRE SUMMIT 8750 1.2 .0 * 1.1 .5 220
GUNSIGHT PASS 9820 1.7 .0 * 1.7 .8 212
KENDALL R.S. 7740 .0 .0 * .7 .4 175
LOOMIS PARK 8240 .2 .0 * .8 .6 133
NEW FORK LAKE 8340 .2 .0 * .7 .4 175
POCKET CREEK 9360 1.4 -M * 1.5 -M *
SNIDER BASIN 8060 .1 .0 * .6 .4 150
SPRING CREEK DIVIDE 9000 .1 .0 * .5 .6 83
TRIPLE PEAK 8500 .1 .0 * .7 .6 117
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Basin Index (%) * 154
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 1.0 -M *
BUCK PASTURE 9700 .4 -M * 1.2 -M *
EF BLACKS FORK GS 9360 .4 -M * 1.0 -M *
HAMS FORK 7840 .2 .0 * 1.0 .4 250
HEWINTA 9519 .7 .0 * 1.4 .7 200
HICKERSON PARK 9145 .6 .0 * 1.1 .7 157
HOLE-IN-ROCK 9150 .1 .0 * .7 .7 100
INDIAN CREEK 9425 .4 .0 * .9 .6 150
KELLEY R.S. 8180 .4 .0 * 1.0 .5 200
SPIRIT LK 10235 .9 -M * 1.5 -M *
STEEL CREEK PARK 10200 .3 .0 * 1.5 .8 188
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Basin Index (%) * 173
UPPER BEAR RIVER
BEAR RIVER RS 8777 .4 -M * 1.0 -M *
BUG LAKE 7950 .6 .0 * 1.0 .7 143
BURTS MILLER RANCH 8000 .3 -M * .5 -M *
CHALK CREEK #1 8993 .7 .0 * 1.7 1.0 170
HAYDEN FORK 9212 .4 .0 * 1.6 .8 200
KELLEY R.S. 8180 .4 .0 * 1.0 .5 200
LILY LAKE 9156 .5 .0 * 1.5 .9 167
MONTE CRISTO 8960 .9 .0 * 1.3 .8 162
SALT RIVER SUMMIT 7760 .1 .0 * .9 .5 180
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Basin Index (%) * 173
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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.