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 TUESDAY: OCTOBER 22 , 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 1.4 100
BLACK BEAR 8170 1.7 1.8 94* 2.1 2.4 88
BLIND BULL SUM 8650 .7 .6 117* 1.3 1.4 93
COTTONWOOD CREEK 7670 .5 .0 * 1.6 1.8 89
EAST RIM DIVIDE 7930 .1 .0 * 1.2 .9 133
GRAND TARGHEE 9260 2.4 3.6 67* 2.9 4.4 66
GRANITE CREEK 6770 .1 .0 * 1.1 1.3 85
GRASSY LAKE 7265 .2 .0 * 1.5 2.2 68
GROS VENTRE SUMMIT 8750 2.1 1.0 210* 2.1 1.2 175
GUNSIGHT PASS 9820 2.2 .6 367* 2.5 1.6 156
LEWIS LAKE DIVIDE 7850 .0 .0 * 1.3 2.0 65
PHILLIPS BENCH 8200 .5 .0 * 1.5 1.6 94
SALT RIVER SUMMIT 7760 .0 .0 * 1.4 1.1 127
SNAKE RIVER STATION 6920 .0 .0 * 1.0 1.8 56
SPRING CREEK DIVIDE 9000 .6 .6 100* 1.1 1.4 79
THUMB DIVIDE 7980 .0 .0 * 1.2 1.5 80
TOGWOTEE PASS 9580 3.4 1.9 179* 2.3 1.8 128
TWO OCEAN PLATEAU 9240 3.2 2.2 145* 2.3 2.0 115
WILLOW CREEK 8380 .2 .1 200* 2.5 2.4 104
YOUNTS PEAK 8350 -M .8 * -M 1.5 *
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Basin Index (%) 145* 94
MADISON-GALLATIN
BLACK BEAR 8170 1.7 1.8 94* 2.1 2.4 88
CANYON 7870 .5 .2 250* 1.7 1.3 131
MADISON PLATEAU 7750 .0 .7 0* 1.7 1.8 94
WEST YELLOWSTONE 6700 .0 .0 * 1.2 1.4 86
WHISKEY CREEK 6800 .3 .0 * 1.3 1.6 81
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Basin Index (%) 93* 94
YELLOWSTONE
BEARTOOTH LAKE 9360 2.7 1.7 159* 1.5 1.5 100
BURNT MTN 5880 1.8 .0 * 5.2 2.7 193
CANYON 7870 .5 .2 250* 1.7 1.3 131
COLE CREEK 7850 4.8 1.6 300* 3.9 2.3 170
EVENING STAR 9200 3.1 1.4 221* 2.5 2.2 114
FISHER CREEK 9100 3.3 1.6 206* 2.3 2.4 96
NORTHEAST ENTRANCE 7350 .0 .0 * .8 1.2 67
PARKER PEAK 9400 3.1 1.6 194* 2.2 2.0 110
SYLVAN LAKE 8420 1.1 1.0 110* 2.1 2.1 100
THUMB DIVIDE 7980 .0 .0 * 1.2 1.5 80
TWO OCEAN PLATEAU 9240 3.2 2.2 145* 2.3 2.0 115
WHITE MILL 8700 2.4 1.3 185* 1.7 1.9 89
WOLVERINE 7650 .0 .0 * 1.3 1.3 100
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Basin Index (%) 206* 118
WIND RIVER
BURROUGHS CREEK 8750 -M .4 * -M 1.3 *
CASTLE CREEK 8400 .0 -M * 1.8 -M *
COLD SPRINGS 9630 2.4 .2 1200* 3.5 1.3 269
DEER PARK 9700 2.4 1.2 200* 2.8 2.0 140
HOBBS PARK 10100 3.5 1.1 318* 3.7 1.6 231
KIRWIN 9550 3.4 1.0 340* 2.6 1.4 186
LITTLE WARM 9370 2.4 .6 400* 3.3 1.4 236
OWL CREEK 8975 1.8 .4 450* 2.0 .9 222
SOUTH PASS 9040 1.8 .4 450* 2.6 1.5 173
ST. LAWRENCE ALT 8620 1.2 .1 1200* 3.1 1.3 238
TOGWOTEE PASS 9580 3.4 1.9 179* 2.3 1.8 128
TOWNSEND CREEK 8700 -M .0 * -M 1.6 *
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Basin Index (%) 323* 196
BIGHORN BASIN
BALD MTN. 9380 5.2 2.2 236 3.7 2.0 185
BEAR TRAP MEADOW 8200 2.4 .2 1200* 3.6 1.3 277
BONE SPRINGS DIV 9350 3.4 1.7 200 3.1 2.0 155
GRAVE SPRINGS 8550 3.4 .5 680* 4.0 1.7 235
KIRWIN 9550 3.4 1.0 340* 2.6 1.4 186
MARQUETTE 8760 3.7 -M * 4.3 -M *
MIDDLE POWDER 7760 5.7 .5 1140* 5.1 1.8 283
OWL CREEK 8975 1.8 .4 450* 2.0 .9 222
POWDER RIVER PASS 9480 3.1 .7 443* 3.3 1.6 206
SHELL CREEK 9580 3.8 2.2 173 2.8 1.7 165
TIMBER CREEK 7950 2.2 .2 1100* 3.5 1.5 233
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Basin Index (%) 358* 212
SHOSHONE RIVER
BLACKWATER 9780 4.4 1.8 244* 2.4 2.0 120
EVENING STAR 9200 3.1 1.4 221* 2.5 2.2 114
MARQUETTE 8760 3.7 -M * 4.3 -M *
SYLVAN ROAD 7120 .0 .0 * 2.0 1.7 118
YOUNTS PEAK 8350 -M .8 * -M 1.5 *
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Basin Index (%) 234* 117
POWDER RIVER
BEAR TRAP MEADOW 8200 2.4 .2 1200* 3.6 1.3 277
CLOUD PEAK RESERVOIR 9860 3.6 1.2 300* 4.4 2.1 210
GRAVE SPRINGS 8550 3.4 .5 680* 4.0 1.7 235
HANSEN SAWMILL 8360 2.3 .0 * 3.6 1.4 257
MIDDLE POWDER 7760 5.7 .5 1140* 5.1 1.8 283
POWDER RIVER PASS 9480 3.1 .7 443* 3.3 1.6 206
SOLDIER PARK 8720 1.9 -M * 3.5 -M *
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Basin Index (%) 661* 242
TONGUE RIVER
BIG GOOSE 7990 2.7 .6 450* 4.2 2.0 210
BONE SPRINGS DIV 9350 3.4 1.7 200 3.1 2.0 155
BURGESS JUNCTION 7880 3.1 .7 443* 4.2 1.8 233
DOME LAKE 8880 2.7 1.1 245* 3.8 2.0 190
LITTLE GOOSE 8870 3.4 -M * 5.1 -M *
SUCKER CREEK 8880 4.4 .9 489* 5.1 2.0 255
TIE CREEK 6870 1.9 .0 * 4.5 2.1 214
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Basin Index (%) 364* 209
BELLE FOURCHE
COLE CANYON 5910 2.5 .0 * 6.7 1.4 479
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Basin Index (%) * 479
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.9 .0 * 7.1 1.7 418
NORTH RAPID CREEK 6130 3.8 .0 * 7.4 1.5 493
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Basin Index (%) * 453
UPPER N. PLATTE
ARAPAHO RIDGE 10960 2.6 1.8 144* 3.3 2.3 143
BLACKHALL MTN 9820 3.9 -M * 5.0 -M *
COLUMBINE 9160 1.4 .0 * 3.4 1.9 179
DIVIDE PEAK 8880 2.5 .6 417* 4.9 2.2 223
JOE WRIGHT 10120 1.8 1.1 164* 4.7 2.4 196
LAPRELE CREEK 8375 .8 .0 * 2.7 1.3 208
MED BOW 10500 4.3 -M * 5.2 -M *
NORTH FRENCH CREEK 10130 -M 1.6 * -M 2.3 *
NEVER SUMMER 10280 2.8 1.3 215* 3.5 -M *
OLD BATTLE 10000 3.7 1.5 247* 4.4 2.8 157
RAWAH 9020 1.8 .0 * 4.1 1.7 241
SAGE CREEK BASIN 7850 .2 .0 * 2.9 1.6 181
SAND LAKE 10050 4.4 1.6 275* 5.0 2.2 227
SOUTH BRUSH CREEK 8440 2.3 .0 * 4.3 1.7 253
TOWER 10500 5.0 2.0 250* 5.7 2.9 197
WEBBER SPRINGS 9250 1.7 .5 340* 3.7 2.2 168
WILLOW CREEK PASS 9540 2.2 .4 550* 2.7 1.4 193
ZIRKEL 9340 -M .2 * 3.0 3.0 100
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Basin Index (%) 307* 185
SWEETWATER
DEER PARK 9700 2.4 1.2 200* 2.8 2.0 140
LARSEN CREEK 9000 .0 -M * 1.9 -M *
SOUTH PASS 9040 1.8 .4 450* 2.6 1.5 173
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Basin Index (%) 262* 154
LOWER N. PLATTE
CASPER MTN. 7900 7.0 .3 2333* 6.6 1.9 347
LAPRELE CREEK 8375 .8 .0 * 2.7 1.3 208
RENO HILL 8400 -M .8 * -M 1.8 *
WINDY PEAK 7900 .6 .0 * 2.6 1.2 217
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Basin Index (%) 2800* 270
LARAMIE RIVER
BROOKLYN LAKE 10240 1.8 .5 360* 2.8 1.6 175
CINNABAR PARK 9574 2.0 .7 286* 3.3 2.0 165
CROW CREEK 8330 .8 .0 * 2.7 1.4 193
DEADMAN HILL 10220 2.9 1.2 242* 3.7 1.7 218
RAWAH 9020 1.8 .0 * 4.1 1.7 241
ROACH 9700 -M .4 * -M 1.7 *
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Basin Index (%) 388* 198
S. PLATTE
BLACK MOUNTAIN 8920 1.6 -M * 2.7 -M *
CROW CREEK 8330 .8 .0 * 2.7 1.4 193
DEADMAN HILL 10220 2.9 1.2 242* 3.7 1.7 218
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Basin Index (%) 308* 206
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .8 .0 * 3.1 1.2 258
DIVIDE PEAK 8880 2.5 .6 417* 4.9 2.2 223
ELK RIVER 8700 1.1 .0 * 3.1 1.8 172
LITTLE SNAKE RIVER 8915 2.0 .5 400* 4.7 3.3 142
OLD BATTLE 10000 3.7 1.5 247* 4.4 2.8 157
SAGE CREEK BASIN 7850 .2 .0 * 2.9 1.6 181
SANDSTONE RS 8150 1.4 .0 * 3.4 1.4 243
WHISKEY PARK 8950 3.3 .2 1650* 5.2 1.9 274
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Basin Index (%) 536* 196
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.2 .7 171* 1.5 1.2 125
BLIND BULL SUM 8650 .7 .6 117* 1.3 1.4 93
EAST RIM DIVIDE 7930 .1 .0 * 1.2 .9 133
ELKHART PARK G.S. 9400 1.3 .5 260* 2.0 1.2 167
GROS VENTRE SUMMIT 8750 2.1 1.0 210* 2.1 1.2 175
GUNSIGHT PASS 9820 2.2 .6 367* 2.5 1.6 156
KENDALL R.S. 7740 .1 .0 * 1.2 1.0 120
LOOMIS PARK 8240 .4 .0 * 1.4 1.1 127
NEW FORK LAKE 8340 .3 .0 * .7 .9 78
POCKET CREEK 9360 2.3 -M * 2.5 -M *
SNIDER BASIN 8060 .2 .0 * 1.1 .9 122
SPRING CREEK DIVIDE 9000 .6 .6 100* 1.1 1.4 79
TRIPLE PEAK 8500 .9 .4 225* 1.3 1.5 87
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Basin Index (%) 230* 122
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 * 1.8 -M *
HAMS FORK 7840 .0 .0 * 1.5 .9 167
HEWINTA 9519 .0 .0 * 2.0 1.4 143
HICKERSON PARK 9145 .0 .0 * 1.5 1.2 125
HOLE-IN-ROCK 9150 .0 .0 * 1.3 1.4 93
INDIAN CREEK 9425 .9 .9 100* 1.6 1.4 114
KELLEY R.S. 8180 .7 .0 * 1.6 1.2 133
SPIRIT LK 10235 1.0 -M * 2.0 -M *
STEEL CREEK PARK 10200 -M .7 * 2.4 1.7 141
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Basin Index (%) 178* 129
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 1.7 -M *
BUG LAKE 7950 1.1 .0 * 1.5 1.5 100
BURTS MILLER RANCH 8000 .1 -M * .8 -M *
CHALK CREEK #1 8993 1.2 .4 300* 2.4 2.1 114
HAYDEN FORK 9212 .1 .0 * 2.5 1.8 139
KELLEY R.S. 8180 .7 .0 * 1.6 1.2 133
LILY LAKE 9156 .0 .0 * 2.5 1.7 147
MONTE CRISTO 8960 .4 .0 * 1.6 1.9 84
SALT RIVER SUMMIT 7760 .0 .0 * 1.4 1.1 127
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Basin Index (%) 875* 119
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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.