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 SUNDAY: OCTOBER 13 , 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 * .8 .7 114
BLACK BEAR 8170 1.4 .7 200* 1.6 1.5 107
BLIND BULL SUM 8650 .2 .1 200* .8 .8 100
COTTONWOOD CREEK 7670 .5 .0 * 1.1 1.0 110
EAST RIM DIVIDE 7930 .1 .0 * .6 .5 120
GRAND TARGHEE 9260 1.7 1.2 142* 1.9 2.4 79
GRANITE CREEK 6770 .1 .0 * .6 .6 100
GRASSY LAKE 7265 .2 .0 * 1.1 1.3 85
GROS VENTRE SUMMIT 8750 1.2 .3 400* 1.1 .7 157
GUNSIGHT PASS 9820 1.6 .0 * 1.8 .9 200
LEWIS LAKE DIVIDE 7850 .1 .0 * .9 1.1 82
PHILLIPS BENCH 8200 .0 .0 * .9 .8 112
SALT RIVER SUMMIT 7760 -M .0 * -M .7 *
SNAKE RIVER STATION 6920 .2 .0 * .7 1.0 70
SPRING CREEK DIVIDE 9000 .1 .0 * .6 .7 86
THUMB DIVIDE 7980 .0 .0 * .6 1.0 60
TOGWOTEE PASS 9580 2.9 .9 322* 1.6 .9 178
TWO OCEAN PLATEAU 9240 2.3 1.1 209* 1.5 1.1 136
WILLOW CREEK 8380 .0 .0 * 1.6 1.3 123
YOUNTS PEAK 8350 -M .4 * -M .9 *
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Basin Index (%) 293* 108
MADISON-GALLATIN
BLACK BEAR 8170 1.4 .7 200* 1.6 1.5 107
CANYON 7870 .7 .0 * 1.3 .8 162
MADISON PLATEAU 7750 .0 .3 0* 1.3 1.1 118
WEST YELLOWSTONE 6700 .0 .0 * .8 .9 89
WHISKEY CREEK 6800 .0 .0 * .8 1.0 80
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Basin Index (%) 210* 109
YELLOWSTONE
BEARTOOTH LAKE 9360 1.8 1.0 180* .6 .9 67
BURNT MTN 5880 .9 .0 * 3.2 2.2 145
CANYON 7870 .7 .0 * 1.3 .8 162
COLE CREEK 7850 2.3 .9 256* 2.1 1.4 150
EVENING STAR 9200 2.1 .7 300* 1.4 1.2 117
FISHER CREEK 9100 2.4 .8 300* 1.1 1.3 85
NORTHEAST ENTRANCE 7350 .2 .0 * .5 .8 62
PARKER PEAK 9400 2.1 .9 233* 1.1 1.2 92
SYLVAN LAKE 8420 .5 .3 167* 1.4 1.2 117
THUMB DIVIDE 7980 .0 .0 * .6 1.0 60
TWO OCEAN PLATEAU 9240 2.3 1.1 209* 1.5 1.1 136
WHITE MILL 8700 1.6 .7 229* .8 1.1 73
WOLVERINE 7650 .0 .0 * .6 .8 75
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Basin Index (%) 264* 108
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .8 *
CASTLE CREEK 8400 .1 -M * 1.3 -M *
COLD SPRINGS 9630 1.4 .0 * 2.5 .8 312
DEER PARK 9700 1.9 .5 380* 2.3 1.3 177
HOBBS PARK 10100 2.4 .5 480* 2.5 .9 278
KIRWIN 9550 2.5 .5 500* 1.6 .8 200
LITTLE WARM 9370 1.8 .1 1800* 2.4 .7 343
OWL CREEK 8975 .9 .0 * 1.2 .6 200
SOUTH PASS 9040 1.3 .0 * 2.1 .9 233
ST. LAWRENCE ALT 8620 .3 .0 * 1.9 .8 238
TOGWOTEE PASS 9580 2.9 .9 322* 1.6 .9 178
TOWNSEND CREEK 8700 -M .0 * -M .9 *
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Basin Index (%) 616* 235
BIGHORN BASIN
BALD MTN. 9380 2.5 1.4 179* 1.5 1.2 125
BEAR TRAP MEADOW 8200 1.3 .0 * 2.3 .7 329
BONE SPRINGS DIV 9350 1.7 1.1 155* 1.4 1.2 117
GRAVE SPRINGS 8550 2.1 .0 * 2.8 1.1 255
KIRWIN 9550 2.5 .5 500* 1.6 .8 200
MARQUETTE 8760 2.7 -M * 3.2 -M *
MIDDLE POWDER 7760 3.2 .2 1600* 3.1 1.1 282
OWL CREEK 8975 .9 .0 * 1.2 .6 200
POWDER RIVER PASS 9480 1.9 .1 1900* 1.9 .9 211
SHELL CREEK 9580 2.7 1.3 208* 1.7 1.1 155
TIMBER CREEK 7950 1.1 .0 * 2.3 1.0 230
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Basin Index (%) 433* 204
SHOSHONE RIVER
BLACKWATER 9780 3.7 1.0 370* 1.7 1.2 142
EVENING STAR 9200 2.1 .7 300* 1.4 1.2 117
MARQUETTE 8760 2.7 -M * 3.2 -M *
SYLVAN ROAD 7120 .0 .0 * 1.4 .9 156
YOUNTS PEAK 8350 -M .4 * -M .9 *
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Basin Index (%) 341* 136
POWDER RIVER
BEAR TRAP MEADOW 8200 1.3 .0 * 2.3 .7 329
CLOUD PEAK RESERVOIR 9860 2.5 .2 1250* 3.3 1.2 275
GRAVE SPRINGS 8550 2.1 .0 * 2.8 1.1 255
HANSEN SAWMILL 8360 1.8 .0 * 2.8 .8 350
MIDDLE POWDER 7760 3.2 .2 1600* 3.1 1.1 282
POWDER RIVER PASS 9480 1.9 .1 1900* 1.9 .9 211
SOLDIER PARK 8720 1.4 -M * 2.7 -M *
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Basin Index (%) 2560* 279
TONGUE RIVER
BIG GOOSE 7990 1.6 .2 800* 2.8 1.2 233
BONE SPRINGS DIV 9350 1.7 1.1 155* 1.4 1.2 117
BURGESS JUNCTION 7880 1.2 .3 400* 2.1 1.1 191
DOME LAKE 8880 1.8 .5 360* 2.7 1.2 225
LITTLE GOOSE 8870 2.3 -M * 3.5 -M *
SUCKER CREEK 8880 2.1 .3 700* 2.6 1.2 217
TIE CREEK 6870 .7 .0 * 2.7 1.4 193
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Basin Index (%) 379* 196
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M 1.1 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * 5.6 1.0 560
NORTH RAPID CREEK 6130 3.9 .0 * -M .9 *
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Basin Index (%) * 560
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.4 .4 350* 2.1 1.2 175
BLACKHALL MTN 9820 1.6 -M * 2.6 -M *
COLUMBINE 9160 .8 .0 * 2.2 1.1 200
DIVIDE PEAK 8880 1.8 .0 * 3.5 1.4 250
JOE WRIGHT 10120 .3 .4 75* 2.2 1.4 157
LAPRELE CREEK 8375 .4 .0 * 2.0 .8 250
MED BOW 10500 2.7 -M * 3.3 -M *
NORTH FRENCH CREEK 10130 -M .5 * -M 1.3 *
NEVER SUMMER 10280 1.2 .5 240* 1.8 -M *
OLD BATTLE 10000 2.4 .6 400* 2.9 1.7 171
RAWAH 9020 .9 .0 * 2.7 1.0 270
SAGE CREEK BASIN 7850 .7 .0 * 2.4 1.0 240
SAND LAKE 10050 2.5 .6 417* 2.8 1.3 215
SOUTH BRUSH CREEK 8440 1.5 .0 * -M 1.0 *
TOWER 10500 2.7 .9 300* 3.2 1.7 188
WEBBER SPRINGS 9250 .7 .0 * 2.3 1.3 177
WILLOW CREEK PASS 9540 1.0 .0 * 1.5 .7 214
ZIRKEL 9340 -M .0 * 1.9 1.9 100
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Basin Index (%) 538* 192
SWEETWATER
DEER PARK 9700 1.9 .5 380* 2.3 1.3 177
LARSEN CREEK 9000 .4 -M * 1.6 -M *
SOUTH PASS 9040 1.3 .0 * 2.1 .9 233
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Basin Index (%) 640* 200
LOWER N. PLATTE
CASPER MTN. 7900 -M .1 * -M 1.1 *
LAPRELE CREEK 8375 .4 .0 * 2.0 .8 250
RENO HILL 8400 -M .0 * -M 1.0 *
WINDY PEAK 7900 .2 .0 * 2.1 .8 262
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Basin Index (%) * 256
LARAMIE RIVER
BROOKLYN LAKE 10240 1.0 .0 * 1.6 .9 178
CINNABAR PARK 9574 1.3 .0 * 2.4 1.2 200
CROW CREEK 8330 .4 .0 * 1.8 .8 225
DEADMAN HILL 10220 .9 .3 300* 1.8 1.0 180
RAWAH 9020 .9 .0 * 2.7 1.0 270
ROACH 9700 -M .0 * -M 1.0 *
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Basin Index (%) 1500* 210
S. PLATTE
BLACK MOUNTAIN 8920 .2 -M * 1.2 -M *
CROW CREEK 8330 .4 .0 * 1.8 .8 225
DEADMAN HILL 10220 .9 .3 300* 1.8 1.0 180
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Basin Index (%) 433* 200
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 2.2 .8 275
DIVIDE PEAK 8880 1.8 .0 * 3.5 1.4 250
ELK RIVER 8700 .6 .0 * 1.8 1.1 164
LITTLE SNAKE RIVER 8915 1.1 .0 * 2.9 1.8 161
OLD BATTLE 10000 2.4 .6 400* 2.9 1.7 171
SAGE CREEK BASIN 7850 .7 .0 * 2.4 1.0 240
SANDSTONE RS 8150 1.2 .0 * 2.2 .9 244
WHISKEY PARK 8950 1.8 .0 * 3.2 1.2 267
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Basin Index (%) 1600* 213
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .7 .0 * .8 .7 114
BLIND BULL SUM 8650 .2 .1 200* .8 .8 100
EAST RIM DIVIDE 7930 .1 .0 * .6 .5 120
ELKHART PARK G.S. 9400 .6 .0 * 1.0 .8 125
GROS VENTRE SUMMIT 8750 1.2 .3 400* 1.1 .7 157
GUNSIGHT PASS 9820 1.6 .0 * 1.8 .9 200
KENDALL R.S. 7740 .0 .0 * .7 .5 140
LOOMIS PARK 8240 .2 .0 * .8 .7 114
NEW FORK LAKE 8340 .2 .0 * .4 .5 80
POCKET CREEK 9360 1.4 -M * 1.5 -M *
SNIDER BASIN 8060 .1 .0 * .6 .5 120
SPRING CREEK DIVIDE 9000 .1 .0 * .6 .7 86
TRIPLE PEAK 8500 .1 .0 * .8 .8 100
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Basin Index (%) 1275* 123
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * 1.1 -M *
BUCK PASTURE 9700 .4 -M * 1.4 -M *
EF BLACKS FORK GS 9360 .4 -M * 1.2 -M *
HAMS FORK 7840 .0 .0 * 1.1 .5 220
HEWINTA 9519 .0 .0 * 1.4 .8 175
HICKERSON PARK 9145 .4 .0 * 1.3 .7 186
HOLE-IN-ROCK 9150 .0 .0 * .8 .8 100
INDIAN CREEK 9425 .4 .4 100* 1.0 .8 125
KELLEY R.S. 8180 .4 .0 * 1.0 .7 143
SPIRIT LK 10235 .8 -M * 1.6 -M *
STEEL CREEK PARK 10200 .1 .3 33* 1.5 1.0 150
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Basin Index (%) 186* 153
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 1.0 -M *
BUG LAKE 7950 .6 .0 * 1.0 .9 111
BURTS MILLER RANCH 8000 .3 -M * .5 -M *
CHALK CREEK #1 8993 .7 .0 * 1.7 1.2 142
HAYDEN FORK 9212 .1 .0 * 1.6 1.0 160
KELLEY R.S. 8180 .4 .0 * 1.0 .7 143
LILY LAKE 9156 .0 .0 * 1.5 1.0 150
MONTE CRISTO 8960 .7 .0 * 1.5 1.0 150
SALT RIVER SUMMIT 7760 -M .0 * -M .7 *
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Basin Index (%) * 143
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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.