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 27 , 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 1.7 76
BLACK BEAR 8170 1.7 2.4 71* 2.1 3.2 66
BLIND BULL SUM 8650 .8 1.0 80* 1.3 1.7 76
COTTONWOOD CREEK 7670 .5 .5 100* 1.6 2.2 73
EAST RIM DIVIDE 7930 .1 .0 * 1.2 1.1 109
GRAND TARGHEE 9260 2.4 4.2 57* 2.8 4.7 60
GRANITE CREEK 6770 .1 .0 * 1.1 1.6 69
GRASSY LAKE 7265 .1 .7 14* 1.5 2.8 54
GROS VENTRE SUMMIT 8750 2.2 1.5 147 2.1 1.5 140
GUNSIGHT PASS 9820 2.2 .8 275* 2.5 1.9 132
LEWIS LAKE DIVIDE 7850 .0 .5 0* 1.3 2.7 48
PHILLIPS BENCH 8200 .6 .6 100* 1.5 2.0 75
SALT RIVER SUMMIT 7760 .0 .0 * 1.4 1.4 100
SNAKE RIVER STATION 6920 .0 .0 * 1.0 2.2 45
SPRING CREEK DIVIDE 9000 .5 .8 62* 1.1 1.8 61
THUMB DIVIDE 7980 .0 .3 0* 1.2 1.9 63
TOGWOTEE PASS 9580 3.4 2.4 142* 2.4 2.3 104
TWO OCEAN PLATEAU 9240 3.2 2.8 114* 2.3 2.6 88
WILLOW CREEK 8380 .0 .6 0* 2.5 3.0 83
YOUNTS PEAK 8350 -M 1.3 * -M 1.9 *
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Basin Index (%) 94* 76
MADISON-GALLATIN
BLACK BEAR 8170 1.7 2.4 71* 2.1 3.2 66
CANYON 7870 .5 .3 167* 1.6 1.6 100
MADISON PLATEAU 7750 .0 1.0 0* 1.7 2.4 71
WEST YELLOWSTONE 6700 .2 .0 * 1.2 1.6 75
WHISKEY CREEK 6800 .2 .2 100* 1.2 2.0 60
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Basin Index (%) 67* 72
YELLOWSTONE
BEARTOOTH LAKE 9360 2.6 2.2 118* 1.5 1.9 79
BURNT MTN 5880 1.4 .0 * 5.3 2.9 183
CANYON 7870 .5 .3 167* 1.6 1.6 100
COLE CREEK 7850 4.6 2.2 209 3.9 2.6 150
EVENING STAR 9200 3.1 2.0 155* 2.6 2.7 96
FISHER CREEK 9100 3.2 2.2 145* 2.4 3.0 80
NORTHEAST ENTRANCE 7350 .1 .0 * .8 1.4 57
PARKER PEAK 9400 3.2 2.2 145* 2.2 2.3 96
SYLVAN LAKE 8420 .9 1.3 69* 2.1 2.5 84
THUMB DIVIDE 7980 .0 .3 0* 1.2 1.9 63
TWO OCEAN PLATEAU 9240 3.2 2.8 114* 2.3 2.6 88
WHITE MILL 8700 2.4 1.7 141* 1.8 2.3 78
WOLVERINE 7650 .0 .0 * 1.3 1.6 81
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Basin Index (%) 147* 99
WIND RIVER
BURROUGHS CREEK 8750 -M .8 * -M 1.6 *
CASTLE CREEK 8400 .0 -M * 1.8 -M *
COLD SPRINGS 9630 2.2 .5 440* 3.4 1.6 212
DEER PARK 9700 2.3 1.5 153* 2.8 2.5 112
HOBBS PARK 10100 3.5 1.6 219 3.7 2.0 185
KIRWIN 9550 3.4 1.4 243 2.5 1.6 156
LITTLE WARM 9370 2.4 1.0 240* 3.2 1.6 200
OWL CREEK 8975 1.8 .5 360* 2.0 1.1 182
SOUTH PASS 9040 1.8 1.0 180* 2.6 2.0 130
ST. LAWRENCE ALT 8620 1.1 .5 220* 3.1 1.5 207
TOGWOTEE PASS 9580 3.4 2.4 142* 2.4 2.3 104
TOWNSEND CREEK 8700 -M .6 * -M 2.0 *
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Basin Index (%) 211* 159
BIGHORN BASIN
BALD MTN. 9380 5.1 2.6 196 3.8 2.4 158
BEAR TRAP MEADOW 8200 2.3 .3 767* 3.6 1.5 240
BONE SPRINGS DIV 9350 3.2 2.2 145 2.9 2.4 121
GRAVE SPRINGS 8550 3.3 .7 471* 4.0 2.0 200
KIRWIN 9550 3.4 1.4 243 2.5 1.6 156
MARQUETTE 8760 3.6 -M * 4.2 -M *
MIDDLE POWDER 7760 5.4 .7 771* 5.1 2.1 243
OWL CREEK 8975 1.8 .5 360* 2.0 1.1 182
POWDER RIVER PASS 9480 3.1 1.1 282 3.4 1.9 179
SHELL CREEK 9580 3.7 2.6 142 2.9 2.1 138
TIMBER CREEK 7950 2.0 .3 667* 3.5 1.7 206
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Basin Index (%) 269* 179
SHOSHONE RIVER
BLACKWATER 9780 4.4 2.4 183* 2.4 2.4 100
EVENING STAR 9200 3.1 2.0 155* 2.6 2.7 96
MARQUETTE 8760 3.6 -M * 4.2 -M *
SYLVAN ROAD 7120 .1 .0 * 2.0 1.9 105
YOUNTS PEAK 8350 -M 1.3 * -M 1.9 *
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Basin Index (%) 173* 100
POWDER RIVER
BEAR TRAP MEADOW 8200 2.3 .3 767* 3.6 1.5 240
CLOUD PEAK RESERVOIR 9860 3.3 1.6 206* 4.3 2.5 172
GRAVE SPRINGS 8550 3.3 .7 471* 4.0 2.0 200
HANSEN SAWMILL 8360 2.2 .2 1100* 3.6 1.6 225
MIDDLE POWDER 7760 5.4 .7 771* 5.1 2.1 243
POWDER RIVER PASS 9480 3.1 1.1 282 3.4 1.9 179
SOLDIER PARK 8720 1.8 -M * 3.4 -M *
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Basin Index (%) 426* 207
TONGUE RIVER
BIG GOOSE 7990 2.4 .8 300* 4.3 2.2 195
BONE SPRINGS DIV 9350 3.2 2.2 145 2.9 2.4 121
BURGESS JUNCTION 7880 2.9 1.0 290* 4.3 2.1 205
DOME LAKE 8880 2.5 1.4 179 3.9 2.4 162
LITTLE GOOSE 8870 3.2 -M * 5.1 -M *
SUCKER CREEK 8880 4.2 1.3 323 5.2 2.4 217
TIE CREEK 6870 1.3 .0 * 4.5 2.5 180
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Basin Index (%) 246* 179
BELLE FOURCHE
COLE CANYON 5910 1.6 .0 * 6.8 1.6 425
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Basin Index (%) * 425
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.8 .0 * 7.0 2.0 350
NORTH RAPID CREEK 6130 3.0 .0 * 7.4 1.8 411
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Basin Index (%) * 379
UPPER N. PLATTE
ARAPAHO RIDGE 10960 2.6 2.4 108 3.3 2.9 114
BLACKHALL MTN 9820 3.9 -M * 5.0 -M *
COLUMBINE 9160 1.2 .2 600* 3.4 2.2 155
DIVIDE PEAK 8880 2.2 1.0 220* 4.9 2.7 181
JOE WRIGHT 10120 1.5 2.0 75* 4.7 2.9 162
LAPRELE CREEK 8375 .8 .2 400* 2.7 1.7 159
MED BOW 10500 4.5 -M * 5.7 -M *
NORTH FRENCH CREEK 10130 -M 2.4 * -M 2.8 *
NEVER SUMMER 10280 2.7 1.8 150* 3.5 -M *
OLD BATTLE 10000 3.6 2.2 164* 4.5 3.5 129
RAWAH 9020 1.6 .1 1600* 4.2 2.0 210
SAGE CREEK BASIN 7850 .2 .0 * 2.9 2.0 145
SAND LAKE 10050 4.3 2.1 205* 5.1 2.6 196
SOUTH BRUSH CREEK 8440 2.3 .3 767* 4.3 1.9 226
TOWER 10500 4.9 2.6 188* 5.6 3.7 151
WEBBER SPRINGS 9250 1.6 .9 178* 3.7 2.8 132
WILLOW CREEK PASS 9540 2.2 .8 275* 2.6 1.7 153
ZIRKEL 9340 .8 .5 160* 3.1 3.4 91
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Basin Index (%) 190* 153
SWEETWATER
DEER PARK 9700 2.3 1.5 153* 2.8 2.5 112
LARSEN CREEK 9000 .0 -M * 1.9 -M *
SOUTH PASS 9040 1.8 1.0 180* 2.6 2.0 130
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Basin Index (%) 164* 120
LOWER N. PLATTE
CASPER MTN. 7900 6.5 .8 812* 6.6 2.5 264
LAPRELE CREEK 8375 .8 .2 400* 2.7 1.7 159
RENO HILL 8400 6.4 1.1 582* 7.8 2.3 339
WINDY PEAK 7900 .4 .1 400* 2.6 1.4 186
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Basin Index (%) 641* 249
LARAMIE RIVER
BROOKLYN LAKE 10240 1.7 1.0 170* 2.7 2.0 135
CINNABAR PARK 9574 2.0 .9 222* 3.3 2.4 138
CROW CREEK 8330 .4 .0 * 2.8 1.6 175
DEADMAN HILL 10220 2.8 1.8 156* 3.8 2.1 181
RAWAH 9020 1.6 .1 1600* 4.2 2.0 210
ROACH 9700 -M .7 * -M 2.0 *
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Basin Index (%) 224* 166
S. PLATTE
BLACK MOUNTAIN 8920 1.5 -M * 2.7 -M *
CROW CREEK 8330 .4 .0 * 2.8 1.6 175
DEADMAN HILL 10220 2.8 1.8 156* 3.8 2.1 181
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Basin Index (%) 178* 178
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .7 .0 * 3.1 1.6 194
DIVIDE PEAK 8880 2.2 1.0 220* 4.9 2.7 181
ELK RIVER 8700 .3 .0 * 3.0 2.2 136
LITTLE SNAKE RIVER 8915 1.3 .7 186* 4.7 4.0 118
OLD BATTLE 10000 3.6 2.2 164* 4.5 3.5 129
SAGE CREEK BASIN 7850 .2 .0 * 2.9 2.0 145
SANDSTONE RS 8150 .5 .0 * 3.4 1.8 189
WHISKEY PARK 8950 3.1 .6 517* 5.1 2.4 212
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Basin Index (%) 264* 156
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.3 1.1 118* 1.5 1.6 94
BLIND BULL SUM 8650 .8 1.0 80* 1.3 1.7 76
EAST RIM DIVIDE 7930 .1 .0 * 1.2 1.1 109
ELKHART PARK G.S. 9400 1.2 .7 171* 1.9 1.6 119
GROS VENTRE SUMMIT 8750 2.2 1.5 147 2.1 1.5 140
GUNSIGHT PASS 9820 2.2 .8 275* 2.5 1.9 132
KENDALL R.S. 7740 .0 .0 * 1.2 1.3 92
LOOMIS PARK 8240 .2 .2 100* 1.4 1.4 100
NEW FORK LAKE 8340 .3 .2 150* .7 1.2 58
POCKET CREEK 9360 2.4 -M * 2.6 -M *
SNIDER BASIN 8060 .2 .0 * .9 1.2 75
SPRING CREEK DIVIDE 9000 .5 .8 62* 1.1 1.8 61
TRIPLE PEAK 8500 1.3 .7 186* 1.3 1.9 68
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Basin Index (%) 147* 94
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * 1.8 -M *
BUCK PASTURE 9700 .0 -M * 2.3 -M *
EF BLACKS FORK GS 9360 .1 -M * 1.8 -M *
HAMS FORK 7840 .0 .0 * 1.5 1.2 125
HEWINTA 9519 .0 .0 * 2.0 1.8 111
HICKERSON PARK 9145 .0 .0 * 1.5 1.6 94
HOLE-IN-ROCK 9150 .1 .0 * 1.3 1.7 76
INDIAN CREEK 9425 .4 1.4 29* 1.6 1.9 84
KELLEY R.S. 8180 .4 .3 133* 1.6 1.6 100
SPIRIT LK 10235 .5 -M * 2.1 -M *
STEEL CREEK PARK 10200 .0 1.1 0* 2.4 2.0 120
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Basin Index (%) 32* 101
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 1.7 -M *
BUG LAKE 7950 .5 .0 * 1.4 1.9 74
BURTS MILLER RANCH 8000 .1 -M * .9 -M *
CHALK CREEK #1 8993 1.3 1.1 118* 2.4 2.6 92
HAYDEN FORK 9212 .1 .0 * 2.5 2.2 114
KELLEY R.S. 8180 .4 .3 133* 1.6 1.6 100
LILY LAKE 9156 .0 .5 0* 2.6 2.1 124
MONTE CRISTO 8960 .2 .0 * 1.6 2.4 67
SALT RIVER SUMMIT 7760 .0 .0 * 1.4 1.4 100
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Basin Index (%) 132* 95
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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.