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 24 , 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 1.5 87
BLACK BEAR 8170 1.7 2.0 85* 2.1 2.9 72
BLIND BULL SUM 8650 .7 .8 88* 1.4 1.5 93
COTTONWOOD CREEK 7670 .5 .2 250* 1.6 1.9 84
EAST RIM DIVIDE 7930 .1 .0 * 1.2 1.0 120
GRAND TARGHEE 9260 2.4 4.0 60* 2.9 4.6 63
GRANITE CREEK 6770 .1 .0 * 1.1 1.4 79
GRASSY LAKE 7265 .2 .4 50* 1.5 2.5 60
GROS VENTRE SUMMIT 8750 2.1 1.2 175* 2.1 1.3 162
GUNSIGHT PASS 9820 2.2 .7 314* 2.5 1.8 139
LEWIS LAKE DIVIDE 7850 .1 .3 33* 1.4 2.4 58
PHILLIPS BENCH 8200 .6 .2 300* 1.5 1.8 83
SALT RIVER SUMMIT 7760 .1 .0 * 1.4 1.3 108
SNAKE RIVER STATION 6920 .0 .0 * 1.0 2.1 48
SPRING CREEK DIVIDE 9000 .6 .7 86* 1.1 1.6 69
THUMB DIVIDE 7980 .1 .0 * 1.2 1.7 71
TOGWOTEE PASS 9580 3.4 2.1 162* 2.3 2.0 115
TWO OCEAN PLATEAU 9240 3.2 2.5 128* 2.4 2.3 104
WILLOW CREEK 8380 .1 .4 25* 2.5 2.7 93
YOUNTS PEAK 8350 -M 1.0 * -M 1.7 *
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Basin Index (%) 118* 85
MADISON-GALLATIN
BLACK BEAR 8170 1.7 2.0 85* 2.1 2.9 72
CANYON 7870 .5 .3 167* 1.7 1.5 113
MADISON PLATEAU 7750 .6 .8 75* 1.7 2.1 81
WEST YELLOWSTONE 6700 .0 .0 * 1.1 1.5 73
WHISKEY CREEK 6800 .0 .2 0* 1.2 1.8 67
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Basin Index (%) 85* 80
YELLOWSTONE
BEARTOOTH LAKE 9360 2.7 1.9 142* 1.5 1.7 88
BURNT MTN 5880 1.6 .0 * 5.2 2.8 186
CANYON 7870 .5 .3 167* 1.7 1.5 113
COLE CREEK 7850 4.7 1.7 276* 3.9 2.4 162
EVENING STAR 9200 3.1 1.6 194* 2.5 2.4 104
FISHER CREEK 9100 3.2 1.8 178* 2.4 2.7 89
NORTHEAST ENTRANCE 7350 .0 .0 * .8 1.4 57
PARKER PEAK 9400 3.2 1.8 178* 2.2 2.1 105
SYLVAN LAKE 8420 1.1 1.1 100* 2.0 2.3 87
THUMB DIVIDE 7980 .1 .0 * 1.2 1.7 71
TWO OCEAN PLATEAU 9240 3.2 2.5 128* 2.4 2.3 104
WHITE MILL 8700 2.4 1.5 160* 1.7 2.1 81
WOLVERINE 7650 .0 .0 * 1.3 1.5 87
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Basin Index (%) 182* 107
WIND RIVER
BURROUGHS CREEK 8750 -M .6 * -M 1.4 *
CASTLE CREEK 8400 .0 -M * 1.8 -M *
COLD SPRINGS 9630 2.3 .3 767* 3.4 1.5 227
DEER PARK 9700 2.3 1.4 164* 2.7 2.2 123
HOBBS PARK 10100 3.5 1.3 269* 3.5 1.8 194
KIRWIN 9550 3.3 1.2 275 2.6 1.5 173
LITTLE WARM 9370 2.3 .8 288* 3.3 1.4 236
OWL CREEK 8975 1.8 .4 450* 2.0 1.0 200
SOUTH PASS 9040 1.8 .7 257* 2.6 1.8 144
ST. LAWRENCE ALT 8620 1.2 .3 400* 3.1 1.4 221
TOGWOTEE PASS 9580 3.4 2.1 162* 2.3 2.0 115
TOWNSEND CREEK 8700 -M .3 * -M 1.8 *
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Basin Index (%) 258* 175
BIGHORN BASIN
BALD MTN. 9380 5.1 2.3 222 3.7 2.2 168
BEAR TRAP MEADOW 8200 2.3 .3 767* 3.5 1.4 250
BONE SPRINGS DIV 9350 3.3 1.9 174 3.0 2.2 136
GRAVE SPRINGS 8550 3.4 .6 567* 4.0 1.8 222
KIRWIN 9550 3.3 1.2 275 2.6 1.5 173
MARQUETTE 8760 3.5 -M * 4.2 -M *
MIDDLE POWDER 7760 5.6 .6 933* 5.1 1.9 268
OWL CREEK 8975 1.8 .4 450* 2.0 1.0 200
POWDER RIVER PASS 9480 3.1 .9 344* 3.3 1.8 183
SHELL CREEK 9580 3.8 2.4 158 2.8 2.0 140
TIMBER CREEK 7950 2.0 .2 1000* 3.5 1.6 219
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Basin Index (%) 312* 193
SHOSHONE RIVER
BLACKWATER 9780 4.4 2.0 220* 2.4 2.2 109
EVENING STAR 9200 3.1 1.6 194* 2.5 2.4 104
MARQUETTE 8760 3.5 -M * 4.2 -M *
SYLVAN ROAD 7120 .0 .0 * 2.0 1.8 111
YOUNTS PEAK 8350 -M 1.0 * -M 1.7 *
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Basin Index (%) 208* 108
POWDER RIVER
BEAR TRAP MEADOW 8200 2.3 .3 767* 3.5 1.4 250
CLOUD PEAK RESERVOIR 9860 3.4 1.3 262* 4.4 2.3 191
GRAVE SPRINGS 8550 3.4 .6 567* 4.0 1.8 222
HANSEN SAWMILL 8360 2.2 .1 2200* 3.6 1.5 240
MIDDLE POWDER 7760 5.6 .6 933* 5.1 1.9 268
POWDER RIVER PASS 9480 3.1 .9 344* 3.3 1.8 183
SOLDIER PARK 8720 1.8 -M * 3.4 -M *
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Basin Index (%) 526* 223
TONGUE RIVER
BIG GOOSE 7990 2.5 .7 357* 4.2 2.1 200
BONE SPRINGS DIV 9350 3.3 1.9 174 3.0 2.2 136
BURGESS JUNCTION 7880 3.0 .8 375* 4.1 1.9 216
DOME LAKE 8880 2.5 1.2 208 3.8 2.2 173
LITTLE GOOSE 8870 3.3 -M * 5.1 -M *
SUCKER CREEK 8880 4.3 1.1 391* 5.1 2.1 243
TIE CREEK 6870 1.6 .0 * 4.4 2.3 191
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Basin Index (%) 302* 192
BELLE FOURCHE
COLE CANYON 5910 2.1 .0 * 6.7 1.5 447
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Basin Index (%) * 447
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.5 .0 * 7.1 1.8 394
NORTH RAPID CREEK 6130 3.4 .0 * 7.4 1.6 462
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Basin Index (%) * 426
UPPER N. PLATTE
ARAPAHO RIDGE 10960 2.6 2.1 124* 3.3 2.5 132
BLACKHALL MTN 9820 3.9 -M * 5.1 -M *
COLUMBINE 9160 1.3 .1 1300* 3.4 2.0 170
DIVIDE PEAK 8880 2.4 .8 300* 4.9 2.4 204
JOE WRIGHT 10120 1.6 1.4 114* 4.7 2.6 181
LAPRELE CREEK 8375 .7 .2 350* 2.7 1.5 180
MED BOW 10500 4.3 -M * 5.3 -M *
NORTH FRENCH CREEK 10130 -M 2.0 * -M 2.5 *
NEVER SUMMER 10280 2.7 1.5 180* 3.5 -M *
OLD BATTLE 10000 3.7 1.8 206* 4.4 3.1 142
RAWAH 9020 1.7 .1 1700* 4.1 1.8 228
SAGE CREEK BASIN 7850 .0 .0 * 2.9 1.8 161
SAND LAKE 10050 4.3 1.8 239* 5.0 2.4 208
SOUTH BRUSH CREEK 8440 2.2 .3 733* 4.3 1.8 239
TOWER 10500 5.0 2.3 217* 5.7 3.2 178
WEBBER SPRINGS 9250 1.6 .6 267* 3.7 2.4 154
WILLOW CREEK PASS 9540 2.2 .6 367* 2.7 1.5 180
ZIRKEL 9340 1.4 .4 350* 3.1 3.1 100
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Basin Index (%) 239* 171
SWEETWATER
DEER PARK 9700 2.3 1.4 164* 2.7 2.2 123
LARSEN CREEK 9000 .0 -M * 1.8 -M *
SOUTH PASS 9040 1.8 .7 257* 2.6 1.8 144
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Basin Index (%) 195* 132
LOWER N. PLATTE
CASPER MTN. 7900 6.7 .4 1675* 6.5 2.0 325
LAPRELE CREEK 8375 .7 .2 350* 2.7 1.5 180
RENO HILL 8400 6.4 .9 711* 7.7 2.0 385
WINDY PEAK 7900 .5 .0 * 2.6 1.3 200
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Basin Index (%) 953* 287
LARAMIE RIVER
BROOKLYN LAKE 10240 1.7 .7 243* 2.8 1.8 156
CINNABAR PARK 9574 2.0 .8 250* 3.3 2.2 150
CROW CREEK 8330 .6 .0 * 2.7 1.5 180
DEADMAN HILL 10220 2.9 1.5 193* 3.7 1.9 195
RAWAH 9020 1.7 .1 1700* 4.1 1.8 228
ROACH 9700 -M .5 * -M 1.8 *
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Basin Index (%) 287* 180
S. PLATTE
BLACK MOUNTAIN 8920 1.4 -M * 2.7 -M *
CROW CREEK 8330 .6 .0 * 2.7 1.5 180
DEADMAN HILL 10220 2.9 1.5 193* 3.7 1.9 195
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Basin Index (%) 233* 188
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .8 .0 * 3.1 1.4 221
DIVIDE PEAK 8880 2.4 .8 300* 4.9 2.4 204
ELK RIVER 8700 .0 .0 * 3.1 1.9 163
LITTLE SNAKE RIVER 8915 1.8 .7 257* 4.7 3.5 134
OLD BATTLE 10000 3.7 1.8 206* 4.4 3.1 142
SAGE CREEK BASIN 7850 .0 .0 * 2.9 1.8 161
SANDSTONE RS 8150 1.1 .0 * 3.4 1.6 212
WHISKEY PARK 8950 3.3 .4 825* 5.2 2.1 248
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Basin Index (%) 354* 178
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.2 .8 150* 1.5 1.4 107
BLIND BULL SUM 8650 .7 .8 88* 1.4 1.5 93
EAST RIM DIVIDE 7930 .1 .0 * 1.2 1.0 120
ELKHART PARK G.S. 9400 1.3 .6 217* 2.0 1.4 143
GROS VENTRE SUMMIT 8750 2.1 1.2 175* 2.1 1.3 162
GUNSIGHT PASS 9820 2.2 .7 314* 2.5 1.8 139
KENDALL R.S. 7740 .0 .0 * 1.3 1.1 118
LOOMIS PARK 8240 .3 .2 150* 1.4 1.3 108
NEW FORK LAKE 8340 .1 .0 * .7 1.0 70
POCKET CREEK 9360 2.3 -M * 2.5 -M *
SNIDER BASIN 8060 .1 .0 * .9 1.0 90
SPRING CREEK DIVIDE 9000 .6 .7 86* 1.1 1.6 69
TRIPLE PEAK 8500 1.0 .5 200* 1.3 1.7 76
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Basin Index (%) 176* 108
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * 1.8 -M *
BUCK PASTURE 9700 .2 -M * 2.3 -M *
EF BLACKS FORK GS 9360 .2 -M * 1.8 -M *
HAMS FORK 7840 .0 .0 * 1.5 1.0 150
HEWINTA 9519 .0 .0 * 2.0 1.6 125
HICKERSON PARK 9145 .1 .0 * 1.4 1.4 100
HOLE-IN-ROCK 9150 .0 .0 * 1.3 1.5 87
INDIAN CREEK 9425 .8 1.1 73* 1.6 1.6 100
KELLEY R.S. 8180 .6 .2 300* 1.6 1.4 114
SPIRIT LK 10235 .8 -M * 2.0 -M *
STEEL CREEK PARK 10200 .4 .9 44* 2.4 1.8 133
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Basin Index (%) 86* 115
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 1.7 -M *
BUG LAKE 7950 1.0 .0 * 1.4 1.7 82
BURTS MILLER RANCH 8000 .2 -M * .9 -M *
CHALK CREEK #1 8993 1.3 .7 186* 2.4 2.3 104
HAYDEN FORK 9212 .1 .0 * 2.5 2.0 125
KELLEY R.S. 8180 .6 .2 300* 1.6 1.4 114
LILY LAKE 9156 .0 .5 0* 2.5 1.9 132
MONTE CRISTO 8960 .1 .0 * 1.5 2.1 71
SALT RIVER SUMMIT 7760 .1 .0 * 1.4 1.3 108
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Basin Index (%) 229* 105
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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.