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 WEDNESDAY: OCTOBER 16 , 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 * 1.4 1.0 140
BLACK BEAR 8170 1.7 1.1 155* 1.8 1.8 100
BLIND BULL SUM 8650 .6 .2 300* 1.4 1.0 140
COTTONWOOD CREEK 7670 .4 .0 * 1.6 1.3 123
EAST RIM DIVIDE 7930 .2 .0 * 1.1 .7 157
GRAND TARGHEE 9260 2.2 1.6 138* 2.4 2.7 89
GRANITE CREEK 6770 .1 .0 * 1.0 .9 111
GRASSY LAKE 7265 .1 .0 * 1.4 1.7 82
GROS VENTRE SUMMIT 8750 2.0 .6 333* 1.9 .9 211
GUNSIGHT PASS 9820 2.1 .1 2100* 2.2 1.2 183
LEWIS LAKE DIVIDE 7850 .0 .0 * 1.2 1.5 80
PHILLIPS BENCH 8200 .3 .0 * 1.3 1.1 118
SALT RIVER SUMMIT 7760 .0 .0 * 1.3 .9 144
SNAKE RIVER STATION 6920 .2 .0 * 1.0 1.3 77
SPRING CREEK DIVIDE 9000 .4 .1 400* 1.0 1.0 100
THUMB DIVIDE 7980 .1 .0 * 1.1 1.2 92
TOGWOTEE PASS 9580 3.3 1.3 254* 2.2 1.3 169
TWO OCEAN PLATEAU 9240 3.0 1.5 200* 2.1 1.4 150
WILLOW CREEK 8380 .3 .0 * 2.5 1.8 139
YOUNTS PEAK 8350 -M .5 * -M 1.1 *
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Basin Index (%) 262* 121
MADISON-GALLATIN
BLACK BEAR 8170 1.7 1.1 155* 1.8 1.8 100
CANYON 7870 1.1 .1 1100* 1.7 1.0 170
MADISON PLATEAU 7750 .4 .4 100* 1.7 1.4 121
WEST YELLOWSTONE 6700 .1 .0 * 1.1 1.0 110
WHISKEY CREEK 6800 .2 .0 * 1.3 1.2 108
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Basin Index (%) 219* 119
YELLOWSTONE
BEARTOOTH LAKE 9360 2.0 1.2 167* .8 1.1 73
BURNT MTN 5880 -M .0 * 4.3 2.4 179
CANYON 7870 1.1 .1 1100* 1.7 1.0 170
COLE CREEK 7850 3.6 1.2 300* 3.2 1.8 178
EVENING STAR 9200 2.7 1.0 270* 2.0 1.6 125
FISHER CREEK 9100 2.7 1.2 225* 1.5 1.7 88
NORTHEAST ENTRANCE 7350 .1 .0 * .7 1.0 70
PARKER PEAK 9400 2.5 1.1 227* 1.7 1.5 113
SYLVAN LAKE 8420 1.0 .5 200* 1.9 1.6 119
THUMB DIVIDE 7980 .1 .0 * 1.1 1.2 92
TWO OCEAN PLATEAU 9240 3.0 1.5 200* 2.1 1.4 150
WHITE MILL 8700 1.9 1.0 190* 1.1 1.4 79
WOLVERINE 7650 .0 .0 * 1.0 1.0 100
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Basin Index (%) 235* 124
WIND RIVER
BURROUGHS CREEK 8750 -M .1 * -M 1.0 *
CASTLE CREEK 8400 .3 -M * 1.5 -M *
COLD SPRINGS 9630 2.2 .0 * -M 1.0 *
DEER PARK 9700 2.0 .6 333* 2.3 1.5 153
HOBBS PARK 10100 3.3 .7 471* 3.1 1.1 282
KIRWIN 9550 3.1 .7 443* 2.2 1.0 220
LITTLE WARM 9370 2.4 .2 1200* 2.9 1.0 290
OWL CREEK 8975 1.2 .1 1200* 1.5 .7 214
SOUTH PASS 9040 1.3 .0 * 2.1 1.0 210
ST. LAWRENCE ALT 8620 .9 .0 * 2.7 .9 300
TOGWOTEE PASS 9580 3.3 1.3 254* 2.2 1.3 169
TOWNSEND CREEK 8700 -M .0 * -M 1.1 *
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Basin Index (%) 547* 224
BIGHORN BASIN
BALD MTN. 9380 3.8 1.7 224* 2.6 1.5 173
BEAR TRAP MEADOW 8200 1.6 .1 1600* 2.7 .9 300
BONE SPRINGS DIV 9350 2.5 1.3 192* 2.1 1.4 150
GRAVE SPRINGS 8550 2.7 .0 * 3.4 1.2 283
KIRWIN 9550 3.1 .7 443* 2.2 1.0 220
MARQUETTE 8760 3.5 -M * 4.0 -M *
MIDDLE POWDER 7760 -M .3 * 3.9 1.3 300
OWL CREEK 8975 1.2 .1 1200* 1.5 .7 214
POWDER RIVER PASS 9480 2.4 .3 800* 2.4 1.2 200
SHELL CREEK 9580 3.0 1.6 188* 2.1 1.3 162
TIMBER CREEK 7950 1.7 .0 * 3.0 1.2 250
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Basin Index (%) 379* 221
SHOSHONE RIVER
BLACKWATER 9780 4.1 1.3 315* 2.0 1.5 133
EVENING STAR 9200 2.7 1.0 270* 2.0 1.6 125
MARQUETTE 8760 3.5 -M * 4.0 -M *
SYLVAN ROAD 7120 .2 .0 * 2.0 1.2 167
YOUNTS PEAK 8350 -M .5 * -M 1.1 *
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Basin Index (%) 304* 140
POWDER RIVER
BEAR TRAP MEADOW 8200 1.6 .1 1600* 2.7 .9 300
CLOUD PEAK RESERVOIR 9860 2.5 .6 417* 3.2 1.5 213
GRAVE SPRINGS 8550 2.7 .0 * 3.4 1.2 283
HANSEN SAWMILL 8360 1.8 .0 * 3.1 1.0 310
MIDDLE POWDER 7760 -M .3 * 3.9 1.3 300
POWDER RIVER PASS 9480 2.4 .3 800* 2.4 1.2 200
SOLDIER PARK 8720 1.4 -M * 2.9 -M *
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Basin Index (%) 1100* 263
TONGUE RIVER
BIG GOOSE 7990 2.3 .3 767* 3.5 1.5 233
BONE SPRINGS DIV 9350 2.5 1.3 192* 2.1 1.4 150
BURGESS JUNCTION 7880 2.3 .4 575* 3.1 1.3 238
DOME LAKE 8880 2.2 .7 314* 3.3 1.5 220
LITTLE GOOSE 8870 2.9 -M * 4.2 -M *
SUCKER CREEK 8880 3.4 .6 567* 3.8 1.4 271
TIE CREEK 6870 1.4 .0 * 3.6 1.6 225
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Basin Index (%) 427* 223
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M 1.2 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * -M 1.2 *
NORTH RAPID CREEK 6130 4.2 .0 * -M 1.0 *
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Basin Index (%) * *
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.9 .8 238* 2.7 1.6 169
BLACKHALL MTN 9820 3.0 -M * 4.1 -M *
COLUMBINE 9160 1.0 .0 * 2.7 1.4 193
DIVIDE PEAK 8880 2.3 .3 767* 4.4 1.6 275
JOE WRIGHT 10120 .7 .6 117* 3.6 1.8 200
LAPRELE CREEK 8375 .4 .0 * 2.4 .9 267
MED BOW 10500 3.6 -M * 4.2 -M *
NORTH FRENCH CREEK 10130 -M .7 * -M 1.6 *
NEVER SUMMER 10280 1.9 .6 317* 2.6 -M *
OLD BATTLE 10000 3.1 .9 344* 3.6 2.1 171
RAWAH 9020 1.3 .0 * 3.4 1.2 283
SAGE CREEK BASIN 7850 .5 .0 * 2.7 1.1 245
SAND LAKE 10050 3.3 .9 367* 3.8 1.6 238
SOUTH BRUSH CREEK 8440 1.9 .0 * -M 1.2 *
TOWER 10500 4.5 1.1 409* 4.9 2.1 233
WEBBER SPRINGS 9250 1.3 .0 * 3.1 1.6 194
WILLOW CREEK PASS 9540 1.4 .2 700* 1.8 .9 200
ZIRKEL 9340 -M .0 * 2.5 2.2 114
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Basin Index (%) 472* 207
SWEETWATER
DEER PARK 9700 2.0 .6 333* 2.3 1.5 153
LARSEN CREEK 9000 .5 -M * 1.8 -M *
SOUTH PASS 9040 1.3 .0 * 2.1 1.0 210
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Basin Index (%) 550* 176
LOWER N. PLATTE
CASPER MTN. 7900 -M .1 * -M 1.3 *
LAPRELE CREEK 8375 .4 .0 * 2.4 .9 267
RENO HILL 8400 -M .2 * -M 1.2 *
WINDY PEAK 7900 .2 .0 * 2.3 .9 256
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Basin Index (%) * 261
LARAMIE RIVER
BROOKLYN LAKE 10240 1.2 .0 * 2.2 1.2 183
CINNABAR PARK 9574 1.5 .0 * 2.8 1.4 200
CROW CREEK 8330 .2 .0 * 2.1 1.1 191
DEADMAN HILL 10220 1.7 .7 243* 2.6 1.3 200
RAWAH 9020 1.3 .0 * 3.4 1.2 283
ROACH 9700 -M .0 * -M 1.2 *
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Basin Index (%) 843* 211
S. PLATTE
BLACK MOUNTAIN 8920 .8 -M * 2.0 -M *
CROW CREEK 8330 .2 .0 * 2.1 1.1 191
DEADMAN HILL 10220 1.7 .7 243* 2.6 1.3 200
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Basin Index (%) 271* 196
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 2.8 .9 311
DIVIDE PEAK 8880 2.3 .3 767* 4.4 1.6 275
ELK RIVER 8700 .8 .0 * 2.5 1.3 192
LITTLE SNAKE RIVER 8915 1.8 .0 * 4.1 2.1 195
OLD BATTLE 10000 3.1 .9 344* 3.6 2.1 171
SAGE CREEK BASIN 7850 .5 .0 * 2.7 1.1 245
SANDSTONE RS 8150 1.4 .0 * 3.0 1.0 300
WHISKEY PARK 8950 -M .0 * 4.5 1.4 321
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Basin Index (%) 825* 240
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.1 .3 367* 1.4 .9 156
BLIND BULL SUM 8650 .6 .2 300* 1.4 1.0 140
EAST RIM DIVIDE 7930 .2 .0 * 1.1 .7 157
ELKHART PARK G.S. 9400 1.1 .2 550* 1.4 1.0 140
GROS VENTRE SUMMIT 8750 2.0 .6 333* 1.9 .9 211
GUNSIGHT PASS 9820 2.1 .1 2100* 2.2 1.2 183
KENDALL R.S. 7740 .0 .0 * 1.1 .7 157
LOOMIS PARK 8240 .4 .0 * 1.3 .9 144
NEW FORK LAKE 8340 .4 .0 * .6 .7 86
POCKET CREEK 9360 2.1 -M * 2.4 -M *
SNIDER BASIN 8060 .0 .0 * .8 .7 114
SPRING CREEK DIVIDE 9000 .4 .1 400* 1.0 1.0 100
TRIPLE PEAK 8500 .3 .0 * 1.2 1.0 120
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Basin Index (%) 573* 144
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * 1.8 -M *
BUCK PASTURE 9700 .6 -M * 2.3 -M *
EF BLACKS FORK GS 9360 .5 -M * 1.7 -M *
HAMS FORK 7840 .0 .0 * 1.4 .6 233
HEWINTA 9519 .0 .0 * 1.9 1.0 190
HICKERSON PARK 9145 -M .0 * 1.3 .8 162
HOLE-IN-ROCK 9150 .0 .0 * 1.2 .9 133
INDIAN CREEK 9425 .7 .6 117* 1.4 1.0 140
KELLEY R.S. 8180 .5 .0 * 1.4 .8 175
SPIRIT LK 10235 .9 -M * 1.9 -M *
STEEL CREEK PARK 10200 .0 .5 0* 2.4 1.2 200
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Basin Index (%) 109* 175
UPPER BEAR RIVER
BEAR RIVER RS 8777 .2 -M * 1.7 -M *
BUG LAKE 7950 .6 .0 * 1.4 1.2 117
BURTS MILLER RANCH 8000 .4 -M * .8 -M *
CHALK CREEK #1 8993 1.0 .0 * 2.4 1.5 160
HAYDEN FORK 9212 .4 .0 * 2.5 1.2 208
KELLEY R.S. 8180 .5 .0 * 1.4 .8 175
LILY LAKE 9156 .7 .0 * 2.5 1.2 208
MONTE CRISTO 8960 .7 .0 * 1.6 1.4 114
SALT RIVER SUMMIT 7760 .0 .0 * 1.3 .9 144
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Basin Index (%) * 160
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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.