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 17 , 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 * 1.3 1.0 130
BLACK BEAR 8170 1.7 1.2 142* 2.0 2.0 100
BLIND BULL SUM 8650 .6 .3 200* 1.3 1.1 118
COTTONWOOD CREEK 7670 .6 .0 * 1.6 1.3 123
EAST RIM DIVIDE 7930 .1 .0 * 1.2 .7 171
GRAND TARGHEE 9260 2.3 1.9 121* 2.7 3.1 87
GRANITE CREEK 6770 .1 .0 * 1.0 .9 111
GRASSY LAKE 7265 .2 .0 * 1.6 1.8 89
GROS VENTRE SUMMIT 8750 2.0 .7 286* 1.9 .9 211
GUNSIGHT PASS 9820 2.1 .2 1050* 2.3 1.2 192
LEWIS LAKE DIVIDE 7850 .1 .0 * 1.4 1.6 88
PHILLIPS BENCH 8200 .4 .0 * 1.4 1.2 117
SALT RIVER SUMMIT 7760 .0 .0 * 1.3 .9 144
SNAKE RIVER STATION 6920 .2 .0 * 1.0 1.4 71
SPRING CREEK DIVIDE 9000 .5 .2 250* 1.1 1.0 110
THUMB DIVIDE 7980 .1 .0 * 1.2 1.2 100
TOGWOTEE PASS 9580 3.3 1.5 220* 2.2 1.4 157
TWO OCEAN PLATEAU 9240 3.2 1.6 200* 2.2 1.5 147
WILLOW CREEK 8380 .3 .0 * 2.5 1.8 139
YOUNTS PEAK 8350 -M .5 * -M 1.2 *
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Basin Index (%) 236* 120
MADISON-GALLATIN
BLACK BEAR 8170 1.7 1.2 142* 2.0 2.0 100
CANYON 7870 1.0 .1 1000* 1.6 1.1 145
MADISON PLATEAU 7750 .5 .4 125* 1.7 1.4 121
WEST YELLOWSTONE 6700 .1 .0 * 1.2 1.0 120
WHISKEY CREEK 6800 .3 .0 * 1.3 1.2 108
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Basin Index (%) 212* 116
YELLOWSTONE
BEARTOOTH LAKE 9360 2.3 1.3 177* 1.1 1.2 92
BURNT MTN 5880 -M .0 * 4.7 2.5 188
CANYON 7870 1.0 .1 1000* 1.6 1.1 145
COLE CREEK 7850 4.1 1.3 315* 3.4 2.0 170
EVENING STAR 9200 2.9 1.0 290* 2.2 1.7 129
FISHER CREEK 9100 2.8 1.3 215* 1.6 1.8 89
NORTHEAST ENTRANCE 7350 .1 .0 * .7 1.0 70
PARKER PEAK 9400 2.8 1.2 233* 1.9 1.6 119
SYLVAN LAKE 8420 1.0 .6 167* 2.0 1.7 118
THUMB DIVIDE 7980 .1 .0 * 1.2 1.2 100
TWO OCEAN PLATEAU 9240 3.2 1.6 200* 2.2 1.5 147
WHITE MILL 8700 2.0 1.0 200* 1.3 1.6 81
WOLVERINE 7650 .0 .0 * 1.2 1.1 109
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Basin Index (%) 237* 126
WIND RIVER
BURROUGHS CREEK 8750 -M .2 * -M 1.0 *
CASTLE CREEK 8400 .4 -M * 1.6 -M *
COLD SPRINGS 9630 2.4 .0 * -M 1.0 *
DEER PARK 9700 2.1 .6 350* 2.5 1.6 156
HOBBS PARK 10100 3.3 .8 412* 3.4 1.2 283
KIRWIN 9550 3.2 .7 457* 2.4 1.1 218
LITTLE WARM 9370 2.4 .3 800* 3.0 1.0 300
OWL CREEK 8975 1.2 .2 600* 1.6 .8 200
SOUTH PASS 9040 1.5 .0 * 2.3 1.2 192
ST. LAWRENCE ALT 8620 1.0 .0 * 2.9 1.0 290
TOGWOTEE PASS 9580 3.3 1.5 220* 2.2 1.4 157
TOWNSEND CREEK 8700 -M .0 * -M 1.3 *
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Basin Index (%) 498* 218
BIGHORN BASIN
BALD MTN. 9380 4.1 1.8 228* 2.9 1.6 181
BEAR TRAP MEADOW 8200 1.6 .2 800* 2.9 1.1 264
BONE SPRINGS DIV 9350 2.7 1.4 193* 2.3 1.6 144
GRAVE SPRINGS 8550 2.8 .1 2800* 3.4 1.3 262
KIRWIN 9550 3.2 .7 457* 2.4 1.1 218
MARQUETTE 8760 3.6 -M * 4.0 -M *
MIDDLE POWDER 7760 -M .3 * 4.0 1.4 286
OWL CREEK 8975 1.2 .2 600* 1.6 .8 200
POWDER RIVER PASS 9480 2.5 .4 625* 2.6 1.3 200
SHELL CREEK 9580 3.1 1.7 182 2.2 1.4 157
TIMBER CREEK 7950 1.7 .0 * 3.1 1.3 238
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Basin Index (%) 352* 212
SHOSHONE RIVER
BLACKWATER 9780 4.2 1.4 300* 2.1 1.6 131
EVENING STAR 9200 2.9 1.0 290* 2.2 1.7 129
MARQUETTE 8760 3.6 -M * 4.0 -M *
SYLVAN ROAD 7120 .1 .0 * 1.9 1.3 146
YOUNTS PEAK 8350 -M .5 * -M 1.2 *
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Basin Index (%) 300* 135
POWDER RIVER
BEAR TRAP MEADOW 8200 1.6 .2 800* 2.9 1.1 264
CLOUD PEAK RESERVOIR 9860 3.0 .7 429* 3.7 1.7 218
GRAVE SPRINGS 8550 2.8 .1 2800* 3.4 1.3 262
HANSEN SAWMILL 8360 2.0 .0 * 3.2 1.1 291
MIDDLE POWDER 7760 -M .3 * 4.0 1.4 286
POWDER RIVER PASS 9480 2.5 .4 625* 2.6 1.3 200
SOLDIER PARK 8720 1.6 -M * 3.0 -M *
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Basin Index (%) 850* 251
TONGUE RIVER
BIG GOOSE 7990 2.5 .4 625* 3.8 1.6 238
BONE SPRINGS DIV 9350 2.7 1.4 193* 2.3 1.6 144
BURGESS JUNCTION 7880 2.4 .5 480* 3.5 1.4 250
DOME LAKE 8880 2.5 .8 312* 3.5 1.6 219
LITTLE GOOSE 8870 3.1 -M * 4.5 -M *
SUCKER CREEK 8880 3.6 .6 600* 4.1 1.6 256
TIE CREEK 6870 1.5 .0 * 3.8 1.7 224
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Basin Index (%) 411* 221
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M 1.2 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * 6.4 1.3 492
NORTH RAPID CREEK 6130 4.1 .0 * -M 1.2 *
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Basin Index (%) * 492
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.9 1.0 190* 2.6 1.6 162
BLACKHALL MTN 9820 3.0 -M * 4.1 -M *
COLUMBINE 9160 .9 .0 * 2.7 1.5 180
DIVIDE PEAK 8880 2.3 .3 767* 4.5 1.7 265
JOE WRIGHT 10120 .8 .7 114* 3.6 1.9 189
LAPRELE CREEK 8375 .5 .0 * 2.4 1.0 240
MED BOW 10500 3.6 -M * 4.4 -M *
NORTH FRENCH CREEK 10130 -M .7 * -M 1.8 *
NEVER SUMMER 10280 1.8 .7 257* 2.6 -M *
OLD BATTLE 10000 3.2 1.0 320* 3.7 2.2 168
RAWAH 9020 1.3 .0 * 3.5 1.2 292
SAGE CREEK BASIN 7850 .6 .0 * 2.8 1.2 233
SAND LAKE 10050 3.4 1.0 340* 4.0 1.7 235
SOUTH BRUSH CREEK 8440 1.9 .0 * -M 1.3 *
TOWER 10500 4.4 1.2 367* 4.8 2.2 218
WEBBER SPRINGS 9250 1.3 .0 * 3.1 1.7 182
WILLOW CREEK PASS 9540 1.3 .2 650* 1.8 1.0 180
ZIRKEL 9340 -M .0 * 2.6 2.2 118
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Basin Index (%) 420* 200
SWEETWATER
DEER PARK 9700 2.1 .6 350* 2.5 1.6 156
LARSEN CREEK 9000 .5 -M * 1.8 -M *
SOUTH PASS 9040 1.5 .0 * 2.3 1.2 192
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Basin Index (%) 600* 171
LOWER N. PLATTE
CASPER MTN. 7900 -M .1 * -M 1.4 *
LAPRELE CREEK 8375 .5 .0 * 2.4 1.0 240
RENO HILL 8400 -M .4 * -M 1.3 *
WINDY PEAK 7900 .2 .0 * 2.2 .9 244
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Basin Index (%) * 242
LARAMIE RIVER
BROOKLYN LAKE 10240 1.3 .0 * 2.2 1.2 183
CINNABAR PARK 9574 1.6 .0 * 2.9 1.4 207
CROW CREEK 8330 .2 .0 * 2.2 1.2 183
DEADMAN HILL 10220 1.8 .8 225* 2.6 1.4 186
RAWAH 9020 1.3 .0 * 3.5 1.2 292
ROACH 9700 -M .4 * -M 1.3 *
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Basin Index (%) 775* 209
S. PLATTE
BLACK MOUNTAIN 8920 .8 -M * 2.0 -M *
CROW CREEK 8330 .2 .0 * 2.2 1.2 183
DEADMAN HILL 10220 1.8 .8 225* 2.6 1.4 186
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Basin Index (%) 250* 185
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.1 .0 * 2.9 1.0 290
DIVIDE PEAK 8880 2.3 .3 767* 4.5 1.7 265
ELK RIVER 8700 .8 .0 * 2.5 1.4 179
LITTLE SNAKE RIVER 8915 1.7 .0 * 4.2 2.2 191
OLD BATTLE 10000 3.2 1.0 320* 3.7 2.2 168
SAGE CREEK BASIN 7850 .6 .0 * 2.8 1.2 233
SANDSTONE RS 8150 1.3 .0 * 3.0 1.1 273
WHISKEY PARK 8950 -M .0 * 4.6 1.5 307
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Basin Index (%) 846* 229
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.2 .4 300* 1.5 1.0 150
BLIND BULL SUM 8650 .6 .3 200* 1.3 1.1 118
EAST RIM DIVIDE 7930 .1 .0 * 1.2 .7 171
ELKHART PARK G.S. 9400 1.1 .3 367* 1.6 1.0 160
GROS VENTRE SUMMIT 8750 2.0 .7 286* 1.9 .9 211
GUNSIGHT PASS 9820 2.1 .2 1050* 2.3 1.2 192
KENDALL R.S. 7740 .0 .0 * 1.1 .7 157
LOOMIS PARK 8240 .6 .0 * 1.3 .9 144
NEW FORK LAKE 8340 .5 .0 * .7 .7 100
POCKET CREEK 9360 2.3 -M * 2.4 -M *
SNIDER BASIN 8060 .1 .0 * 1.0 .7 143
SPRING CREEK DIVIDE 9000 .5 .2 250* 1.1 1.0 110
TRIPLE PEAK 8500 .4 .0 * 1.3 1.1 118
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Basin Index (%) 438* 148
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * 1.8 -M *
BUCK PASTURE 9700 .7 -M * 2.3 -M *
EF BLACKS FORK GS 9360 .6 -M * 1.8 -M *
HAMS FORK 7840 .0 .0 * 1.4 .6 233
HEWINTA 9519 -M .0 * 2.0 1.1 182
HICKERSON PARK 9145 .0 .0 * 1.5 .9 167
HOLE-IN-ROCK 9150 .0 .0 * 1.2 1.1 109
INDIAN CREEK 9425 .7 .6 117* 1.5 1.0 150
KELLEY R.S. 8180 .6 .0 * 1.5 .9 167
SPIRIT LK 10235 .9 -M * 2.0 -M *
STEEL CREEK PARK 10200 .3 .5 60* 2.3 1.3 177
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Basin Index (%) 145* 165
UPPER BEAR RIVER
BEAR RIVER RS 8777 .1 -M * 1.7 -M *
BUG LAKE 7950 .8 .0 * 1.5 1.2 125
BURTS MILLER RANCH 8000 .2 -M * .8 -M *
CHALK CREEK #1 8993 1.1 .2 550* 2.4 1.6 150
HAYDEN FORK 9212 .2 .0 * 2.5 1.3 192
KELLEY R.S. 8180 .6 .0 * 1.5 .9 167
LILY LAKE 9156 .7 .0 * 2.5 1.3 192
MONTE CRISTO 8960 .9 .0 * 1.8 1.4 129
SALT RIVER SUMMIT 7760 .0 .0 * 1.3 .9 144
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Basin Index (%) 2150* 157
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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.