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 18 , 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 * 1.4 1.1 127
BLACK BEAR 8170 1.7 1.3 131* 2.0 2.0 100
BLIND BULL SUM 8650 .6 .3 200* 1.4 1.1 127
COTTONWOOD CREEK 7670 .4 .0 * 1.6 1.4 114
EAST RIM DIVIDE 7930 .1 .0 * 1.2 .7 171
GRAND TARGHEE 9260 2.3 2.3 100* 2.6 3.3 79
GRANITE CREEK 6770 .1 .0 * 1.1 1.0 110
GRASSY LAKE 7265 .1 .0 * 1.5 1.8 83
GROS VENTRE SUMMIT 8750 2.1 .8 262* 2.0 1.0 200
GUNSIGHT PASS 9820 2.1 .3 700* 2.3 1.2 192
LEWIS LAKE DIVIDE 7850 .0 .0 * 1.3 1.6 81
PHILLIPS BENCH 8200 .4 .0 * 1.4 1.2 117
SALT RIVER SUMMIT 7760 .0 .0 * 1.4 .9 156
SNAKE RIVER STATION 6920 .0 .0 * 1.0 1.4 71
SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.1 91
THUMB DIVIDE 7980 .0 .0 * 1.2 1.3 92
TOGWOTEE PASS 9580 3.4 1.6 212* 2.3 1.4 164
TWO OCEAN PLATEAU 9240 3.3 1.7 194* 2.3 1.6 144
WILLOW CREEK 8380 .3 .0 * 2.5 1.9 132
YOUNTS PEAK 8350 -M .5 * -M 1.2 *
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Basin Index (%) 203* 117
MADISON-GALLATIN
BLACK BEAR 8170 1.7 1.3 131* 2.0 2.0 100
CANYON 7870 .4 .2 200* 1.7 1.1 155
MADISON PLATEAU 7750 .4 .5 80* 1.7 1.5 113
WEST YELLOWSTONE 6700 .0 .0 * 1.2 1.0 120
WHISKEY CREEK 6800 .3 .0 * 1.3 1.3 100
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Basin Index (%) 140* 114
YELLOWSTONE
BEARTOOTH LAKE 9360 2.4 1.4 171* 1.2 1.3 92
BURNT MTN 5880 2.1 .0 * 4.9 2.5 196
CANYON 7870 .4 .2 200* 1.7 1.1 155
COLE CREEK 7850 4.3 1.4 307* 3.6 2.1 171
EVENING STAR 9200 3.0 1.1 273* 2.3 1.8 128
FISHER CREEK 9100 3.1 1.3 238* 1.8 2.0 90
NORTHEAST ENTRANCE 7350 .2 .0 * .8 1.0 80
PARKER PEAK 9400 3.1 1.3 238* 2.1 1.6 131
SYLVAN LAKE 8420 1.1 .6 183* 2.1 1.8 117
THUMB DIVIDE 7980 .0 .0 * 1.2 1.3 92
TWO OCEAN PLATEAU 9240 3.3 1.7 194* 2.3 1.6 144
WHITE MILL 8700 2.2 1.0 220* 1.4 1.6 88
WOLVERINE 7650 .3 .0 * 1.2 1.2 100
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Basin Index (%) 255* 127
WIND RIVER
BURROUGHS CREEK 8750 -M .2 * -M 1.0 *
CASTLE CREEK 8400 .5 -M * 1.7 -M *
COLD SPRINGS 9630 2.4 .0 * 3.5 1.1 318
DEER PARK 9700 2.2 .7 314* 2.6 1.6 162
HOBBS PARK 10100 3.5 .8 438* 3.6 1.3 277
KIRWIN 9550 3.2 .8 400* 2.4 1.1 218
LITTLE WARM 9370 2.4 .3 800* 3.0 1.1 273
OWL CREEK 8975 1.6 .2 800* 1.9 .8 238
SOUTH PASS 9040 1.6 .1 1600* 2.4 1.2 200
ST. LAWRENCE ALT 8620 1.3 .0 * 3.2 1.0 320
TOGWOTEE PASS 9580 3.4 1.6 212* 2.3 1.4 164
TOWNSEND CREEK 8700 -M .0 * -M 1.4 *
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Basin Index (%) 480* 235
BIGHORN BASIN
BALD MTN. 9380 4.5 1.9 237* 3.1 1.7 182
BEAR TRAP MEADOW 8200 2.0 .2 1000* 3.2 1.1 291
BONE SPRINGS DIV 9350 3.0 1.4 214* 2.6 1.7 153
GRAVE SPRINGS 8550 3.0 .1 3000* 3.7 1.5 247
KIRWIN 9550 3.2 .8 400* 2.4 1.1 218
MARQUETTE 8760 3.6 -M * 4.1 -M *
MIDDLE POWDER 7760 5.0 .4 1250* 4.4 1.6 275
OWL CREEK 8975 1.6 .2 800* 1.9 .8 238
POWDER RIVER PASS 9480 2.7 .4 675* 2.8 1.4 200
SHELL CREEK 9580 3.3 1.8 183 2.4 1.5 160
TIMBER CREEK 7950 2.0 .0 * 3.3 1.4 236
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Basin Index (%) 421* 216
SHOSHONE RIVER
BLACKWATER 9780 4.4 1.5 293* 2.3 1.7 135
EVENING STAR 9200 3.0 1.1 273* 2.3 1.8 128
MARQUETTE 8760 3.6 -M * 4.1 -M *
SYLVAN ROAD 7120 .1 .0 * 2.0 1.4 143
YOUNTS PEAK 8350 -M .5 * -M 1.2 *
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Basin Index (%) 288* 135
POWDER RIVER
BEAR TRAP MEADOW 8200 2.0 .2 1000* 3.2 1.1 291
CLOUD PEAK RESERVOIR 9860 3.2 .8 400* 3.9 1.8 217
GRAVE SPRINGS 8550 3.0 .1 3000* 3.7 1.5 247
HANSEN SAWMILL 8360 2.1 .0 * 3.3 1.2 275
MIDDLE POWDER 7760 5.0 .4 1250* 4.4 1.6 275
POWDER RIVER PASS 9480 2.7 .4 675* 2.8 1.4 200
SOLDIER PARK 8720 1.7 -M * 3.2 -M *
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Basin Index (%) 947* 248
TONGUE RIVER
BIG GOOSE 7990 2.6 .4 650* 3.8 1.7 224
BONE SPRINGS DIV 9350 3.0 1.4 214* 2.6 1.7 153
BURGESS JUNCTION 7880 2.7 .5 540* 3.6 1.5 240
DOME LAKE 8880 2.5 .9 278* 3.5 1.7 206
LITTLE GOOSE 8870 3.2 -M * 4.6 -M *
SUCKER CREEK 8880 3.9 .7 557* 4.3 1.7 253
TIE CREEK 6870 1.7 .0 * 4.0 1.8 222
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Basin Index (%) 421* 216
BELLE FOURCHE
COLE CANYON 5910 2.3 .0 * 6.4 1.3 492
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Basin Index (%) * 492
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.5 .0 * 6.4 1.4 457
NORTH RAPID CREEK 6130 4.0 .0 * 6.8 1.3 523
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Basin Index (%) * 489
UPPER N. PLATTE
ARAPAHO RIDGE 10960 2.2 1.2 183* 2.9 1.7 171
BLACKHALL MTN 9820 3.6 -M * 4.7 -M *
COLUMBINE 9160 1.1 .0 * 3.0 1.6 188
DIVIDE PEAK 8880 2.4 .4 600* 4.6 1.9 242
JOE WRIGHT 10120 1.0 .7 143* 3.9 2.0 195
LAPRELE CREEK 8375 .5 .0 * 2.5 1.1 227
MED BOW 10500 3.9 -M * 4.8 -M *
NORTH FRENCH CREEK 10130 -M .8 * -M 1.9 *
NEVER SUMMER 10280 2.0 .8 250* 2.7 -M *
OLD BATTLE 10000 3.4 1.2 283* 4.0 2.4 167
RAWAH 9020 1.5 .0 * 3.8 1.3 292
SAGE CREEK BASIN 7850 .6 .0 * 2.8 1.2 233
SAND LAKE 10050 3.8 1.1 345* 4.4 1.8 244
SOUTH BRUSH CREEK 8440 2.1 .0 * -M 1.4 *
TOWER 10500 4.7 1.4 336* 5.2 2.4 217
WEBBER SPRINGS 9250 1.6 .2 800* 3.5 1.8 194
WILLOW CREEK PASS 9540 1.5 .3 500* 2.0 1.1 182
ZIRKEL 9340 -M .0 * 2.8 2.4 117
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Basin Index (%) 389* 200
SWEETWATER
DEER PARK 9700 2.2 .7 314* 2.6 1.6 162
LARSEN CREEK 9000 .0 -M * 1.8 -M *
SOUTH PASS 9040 1.6 .1 1600* 2.4 1.2 200
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Basin Index (%) 475* 179
LOWER N. PLATTE
CASPER MTN. 7900 -M .1 * -M 1.6 *
LAPRELE CREEK 8375 .5 .0 * 2.5 1.1 227
RENO HILL 8400 -M .5 * -M 1.4 *
WINDY PEAK 7900 .3 .0 * 2.4 1.0 240
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Basin Index (%) * 233
LARAMIE RIVER
BROOKLYN LAKE 10240 1.5 .3 500* 2.3 1.4 164
CINNABAR PARK 9574 1.8 .2 900* 3.1 1.5 207
CROW CREEK 8330 .5 .0 * 2.4 1.2 200
DEADMAN HILL 10220 2.3 .9 256* 3.1 1.5 207
RAWAH 9020 1.5 .0 * 3.8 1.3 292
ROACH 9700 -M .3 * -M 1.4 *
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Basin Index (%) 543* 213
S. PLATTE
BLACK MOUNTAIN 8920 1.3 -M * 2.4 -M *
CROW CREEK 8330 .5 .0 * 2.4 1.2 200
DEADMAN HILL 10220 2.3 .9 256* 3.1 1.5 207
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Basin Index (%) 311* 204
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.1 .0 * 3.0 1.0 300
DIVIDE PEAK 8880 2.4 .4 600* 4.6 1.9 242
ELK RIVER 8700 1.0 .0 * 2.8 1.5 187
LITTLE SNAKE RIVER 8915 2.0 .2 1000* 4.4 2.4 183
OLD BATTLE 10000 3.4 1.2 283* 4.0 2.4 167
SAGE CREEK BASIN 7850 .6 .0 * 2.8 1.2 233
SANDSTONE RS 8150 1.4 .0 * 3.1 1.2 258
WHISKEY PARK 8950 -M .0 * 4.9 1.6 306
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Basin Index (%) 661* 224
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.1 .5 220* 1.4 1.0 140
BLIND BULL SUM 8650 .6 .3 200* 1.4 1.1 127
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 2.1 .8 262* 2.0 1.0 200
GUNSIGHT PASS 9820 2.1 .3 700* 2.3 1.2 192
KENDALL R.S. 7740 .1 .0 * 1.2 .8 150
LOOMIS PARK 8240 .5 .0 * 1.4 .9 156
NEW FORK LAKE 8340 .3 .0 * .7 .7 100
POCKET CREEK 9360 2.2 -M * 2.4 -M *
SNIDER BASIN 8060 .1 .0 * 1.0 .7 143
SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.1 91
TRIPLE PEAK 8500 .4 .1 400* 1.3 1.1 118
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Basin Index (%) 346* 146
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 1.8 -M *
BUCK PASTURE 9700 .8 -M * 2.2 -M *
EF BLACKS FORK GS 9360 .7 -M * 1.8 -M *
HAMS FORK 7840 .0 .0 * 1.4 .6 233
HEWINTA 9519 .0 .0 * 2.0 1.2 167
HICKERSON PARK 9145 .3 .0 * 1.5 1.0 150
HOLE-IN-ROCK 9150 .0 .0 * 1.2 1.1 109
INDIAN CREEK 9425 .7 .7 100* 1.4 1.1 127
KELLEY R.S. 8180 .6 .0 * 1.5 .9 167
SPIRIT LK 10235 1.0 -M * 2.0 -M *
STEEL CREEK PARK 10200 .3 .5 60* 2.4 1.4 171
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Basin Index (%) 158* 156
UPPER BEAR RIVER
BEAR RIVER RS 8777 .1 -M * 1.7 -M *
BUG LAKE 7950 1.0 .0 * 1.6 1.3 123
BURTS MILLER RANCH 8000 .2 -M * .8 -M *
CHALK CREEK #1 8993 1.2 .3 400* 2.4 1.7 141
HAYDEN FORK 9212 .2 .0 * 2.5 1.4 179
KELLEY R.S. 8180 .6 .0 * 1.5 .9 167
LILY LAKE 9156 .8 .0 * 2.5 1.4 179
MONTE CRISTO 8960 .8 .0 * 1.8 1.5 120
SALT RIVER SUMMIT 7760 .0 .0 * 1.4 .9 156
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Basin Index (%) 1533* 151
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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.