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 31 , 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 .7 .2 350* 1.9 2.0 95
BLACK BEAR 8170 2.4 2.8 86* 2.7 3.8 71
BLIND BULL SUM 8650 1.4 1.3 108* 2.1 2.0 105
COTTONWOOD CREEK 7670 1.8 .8 225* 3.1 2.6 119
EAST RIM DIVIDE 7930 .4 .2 200* 1.6 1.3 123
GRAND TARGHEE 9260 4.5 4.5 100* 4.8 5.2 92
GRANITE CREEK 6770 .5 .2 250* 1.8 1.9 95
GRASSY LAKE 7265 1.4 1.1 127* 2.9 3.4 85
GROS VENTRE SUMMIT 8750 2.6 1.7 153 2.5 1.8 139
GUNSIGHT PASS 9820 2.5 .9 278* 2.8 2.2 127
LEWIS LAKE DIVIDE 7850 .5 .9 56* 1.9 3.2 59
PHILLIPS BENCH 8200 2.1 1.1 191* 3.0 2.4 125
SALT RIVER SUMMIT 7760 1.0 .2 500* 2.6 1.8 144
SNAKE RIVER STATION 6920 .6 .2 300* 1.6 2.5 64
SPRING CREEK DIVIDE 9000 1.4 1.1 127* 2.0 2.2 91
THUMB DIVIDE 7980 .4 .4 100* 1.6 2.2 73
TOGWOTEE PASS 9580 4.1 2.6 158 3.0 2.7 111
TWO OCEAN PLATEAU 9240 4.2 3.1 135 3.0 3.1 97
WILLOW CREEK 8380 1.8 .8 225* 4.5 3.6 125
YOUNTS PEAK 8350 -M 1.5 * -M 2.1 *
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Basin Index (%) 142* 99
MADISON-GALLATIN
BLACK BEAR 8170 2.4 2.8 86* 2.7 3.8 71
CANYON 7870 .6 .5 120* 1.8 1.8 100
MADISON PLATEAU 7750 .2 1.3 15* 2.0 2.8 71
WEST YELLOWSTONE 6700 .0 .1 0* 1.2 1.8 67
WHISKEY CREEK 6800 .0 .4 0* 1.2 2.3 52
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Basin Index (%) 63* 71
YELLOWSTONE
BEARTOOTH LAKE 9360 2.9 2.6 112 1.7 2.2 77
BURNT MTN 5880 1.8 .0 * 5.8 3.4 171
CANYON 7870 .6 .5 120* 1.8 1.8 100
COLE CREEK 7850 5.0 2.7 185 4.2 3.0 140
EVENING STAR 9200 3.4 2.4 142* 2.9 3.2 91
FISHER CREEK 9100 3.4 2.6 131* 2.5 3.5 71
NORTHEAST ENTRANCE 7350 .0 .0 * .9 1.8 50
PARKER PEAK 9400 3.6 2.6 138 2.7 2.6 104
SYLVAN LAKE 8420 2.2 1.6 138* 3.6 3.0 120
THUMB DIVIDE 7980 .4 .4 100* 1.6 2.2 73
TWO OCEAN PLATEAU 9240 4.2 3.1 135 3.0 3.1 97
WHITE MILL 8700 2.6 2.1 124* 2.1 2.8 75
WOLVERINE 7650 .0 .0 * 1.3 1.9 68
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Basin Index (%) 146* 99
WIND RIVER
BURROUGHS CREEK 8750 -M 1.1 * -M 1.9 *
CASTLE CREEK 8400 .0 -M * 2.0 -M *
COLD SPRINGS 9630 2.6 .7 371* 3.9 1.8 217
DEER PARK 9700 2.8 1.6 175* 3.3 3.0 110
HOBBS PARK 10100 4.0 2.0 200 3.9 2.3 170
KIRWIN 9550 3.5 1.6 219 2.7 1.9 142
LITTLE WARM 9370 2.6 1.2 217 3.4 1.8 189
OWL CREEK 8975 2.0 .7 286 2.3 1.3 177
SOUTH PASS 9040 2.2 1.3 169* 2.9 2.3 126
ST. LAWRENCE ALT 8620 1.3 .8 162 3.3 1.8 183
TOGWOTEE PASS 9580 4.1 2.6 158 3.0 2.7 111
TOWNSEND CREEK 8700 1.6 .9 178* 2.9 2.3 126
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Basin Index (%) 199 149
BIGHORN BASIN
BALD MTN. 9380 5.2 3.0 173 4.0 2.7 148
BEAR TRAP MEADOW 8200 2.2 .5 440* 3.8 1.7 224
BONE SPRINGS DIV 9350 3.3 2.7 122 3.0 2.7 111
GRAVE SPRINGS 8550 3.5 .9 389* 4.2 2.3 183
KIRWIN 9550 3.5 1.6 219 2.7 1.9 142
MARQUETTE 8760 3.5 -M * 4.3 -M *
MIDDLE POWDER 7760 5.3 1.0 530* 5.2 2.5 208
OWL CREEK 8975 2.0 .7 286 2.3 1.3 177
POWDER RIVER PASS 9480 3.2 1.4 229 3.4 2.2 155
SHELL CREEK 9580 3.9 2.8 139 3.0 2.4 125
TIMBER CREEK 7950 2.2 .6 367 3.7 2.1 176
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Basin Index (%) 226 162
SHOSHONE RIVER
BLACKWATER 9780 4.5 2.7 167 2.5 2.7 93
EVENING STAR 9200 3.4 2.4 142* 2.9 3.2 91
MARQUETTE 8760 3.5 -M * 4.3 -M *
SYLVAN ROAD 7120 .7 .2 350* 2.7 2.3 117
YOUNTS PEAK 8350 -M 1.5 * -M 2.1 *
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Basin Index (%) 162* 99
POWDER RIVER
BEAR TRAP MEADOW 8200 2.2 .5 440* 3.8 1.7 224
CLOUD PEAK RESERVOIR 9860 3.5 1.9 184 4.6 2.7 170
GRAVE SPRINGS 8550 3.5 .9 389* 4.2 2.3 183
HANSEN SAWMILL 8360 2.5 .3 833* 3.8 1.8 211
MIDDLE POWDER 7760 5.3 1.0 530* 5.2 2.5 208
POWDER RIVER PASS 9480 3.2 1.4 229 3.4 2.2 155
SOLDIER PARK 8720 2.0 -M * 3.6 -M *
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Basin Index (%) 337* 189
TONGUE RIVER
BIG GOOSE 7990 2.2 1.0 220* 4.2 2.5 168
BONE SPRINGS DIV 9350 3.3 2.7 122 3.0 2.7 111
BURGESS JUNCTION 7880 2.8 1.3 215 4.2 2.4 175
DOME LAKE 8880 2.3 1.9 121 3.8 2.7 141
LITTLE GOOSE 8870 3.1 -M * 5.2 -M *
SUCKER CREEK 8880 4.2 1.6 262 5.0 2.7 185
TIE CREEK 6870 1.2 .2 600* 4.5 2.8 161
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Basin Index (%) 184 156
BELLE FOURCHE
COLE CANYON 5910 1.2 .0 * 6.8 2.0 340
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Basin Index (%) * 340
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.7 .2 850* 7.2 2.3 313
NORTH RAPID CREEK 6130 3.0 .0 * 7.4 2.2 336
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Basin Index (%) 2350* 324
UPPER N. PLATTE
ARAPAHO RIDGE 10960 3.4 2.9 117 4.1 3.3 124
BLACKHALL MTN 9820 4.2 -M * 5.5 -M *
COLUMBINE 9160 1.4 .5 280* 4.0 2.7 148
DIVIDE PEAK 8880 2.4 1.4 171* 5.3 3.2 166
JOE WRIGHT 10120 2.0 2.4 83 5.5 3.4 162
LAPRELE CREEK 8375 .7 .4 175* 2.6 2.0 130
MED BOW 10500 4.5 -M * 5.9 -M *
NORTH FRENCH CREEK 10130 -M 2.7 * -M 3.2 *
NEVER SUMMER 10280 3.5 2.3 152 4.2 -M *
OLD BATTLE 10000 4.1 2.6 158* 4.9 4.2 117
RAWAH 9020 1.8 .3 600* 4.5 2.4 188
SAGE CREEK BASIN 7850 .7 .3 233* 3.3 2.4 138
SAND LAKE 10050 4.6 2.5 184* 5.2 3.0 173
SOUTH BRUSH CREEK 8440 2.3 .5 460* 4.4 2.3 191
TOWER 10500 6.0 3.2 188* 6.4 4.4 145
WEBBER SPRINGS 9250 2.0 1.1 182* 4.0 3.2 125
WILLOW CREEK PASS 9540 2.8 1.2 233* 3.2 2.0 160
ZIRKEL 9340 .7 .8 88* 3.5 3.8 92
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Basin Index (%) 171* 144
SWEETWATER
DEER PARK 9700 2.8 1.6 175* 3.3 3.0 110
LARSEN CREEK 9000 .0 -M * 2.1 -M *
SOUTH PASS 9040 2.2 1.3 169* 2.9 2.3 126
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Basin Index (%) 172* 117
LOWER N. PLATTE
CASPER MTN. 7900 6.8 1.1 618* 6.6 2.8 236
LAPRELE CREEK 8375 .7 .4 175* 2.6 2.0 130
RENO HILL 8400 6.2 1.2 517* 7.7 2.7 285
WINDY PEAK 7900 .5 .4 125* 2.9 1.7 171
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Basin Index (%) 458* 215
LARAMIE RIVER
BROOKLYN LAKE 10240 1.8 1.3 138* 2.9 2.3 126
CINNABAR PARK 9574 2.3 1.1 209* 3.6 2.8 129
CROW CREEK 8330 .7 .0 * 3.2 2.0 160
DEADMAN HILL 10220 3.3 2.2 150 4.2 2.4 175
RAWAH 9020 1.8 .3 600* 4.5 2.4 188
ROACH 9700 -M 1.1 * -M 2.4 *
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Basin Index (%) 202* 155
S. PLATTE
BLACK MOUNTAIN 8920 1.8 -M * 3.1 -M *
CROW CREEK 8330 .7 .0 * 3.2 2.0 160
DEADMAN HILL 10220 3.3 2.2 150 4.2 2.4 175
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Basin Index (%) 182* 168
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.1 .0 * 3.6 2.0 180
DIVIDE PEAK 8880 2.4 1.4 171* 5.3 3.2 166
ELK RIVER 8700 .5 .2 250* 3.4 2.5 136
LITTLE SNAKE RIVER 8915 1.2 .8 150* 5.1 4.6 111
OLD BATTLE 10000 4.1 2.6 158* 4.9 4.2 117
SAGE CREEK BASIN 7850 .7 .3 233* 3.3 2.4 138
SANDSTONE RS 8150 .6 .0 * 3.9 2.2 177
WHISKEY PARK 8950 3.3 .8 412* 5.6 2.9 193
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Basin Index (%) 228* 146
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.7 1.4 121 1.9 1.8 106
BLIND BULL SUM 8650 1.4 1.3 108* 2.1 2.0 105
EAST RIM DIVIDE 7930 .4 .2 200* 1.6 1.3 123
ELKHART PARK G.S. 9400 1.7 .9 189* 2.1 1.9 111
GROS VENTRE SUMMIT 8750 2.6 1.7 153 2.5 1.8 139
GUNSIGHT PASS 9820 2.5 .9 278* 2.8 2.2 127
KENDALL R.S. 7740 .3 .3 100* 1.6 1.6 100
LOOMIS PARK 8240 .7 .5 140* 2.0 1.8 111
NEW FORK LAKE 8340 .5 .5 100* .8 1.4 57
POCKET CREEK 9360 2.7 -M * 2.9 -M *
SNIDER BASIN 8060 .5 .2 250* 1.4 1.4 100
SPRING CREEK DIVIDE 9000 1.4 1.1 127* 2.0 2.2 91
TRIPLE PEAK 8500 2.2 1.1 200* 2.1 2.2 95
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Basin Index (%) 157* 106
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 2.5 -M *
BUCK PASTURE 9700 .8 -M * 3.2 -M *
EF BLACKS FORK GS 9360 .7 -M * 2.5 -M *
HAMS FORK 7840 .6 .0 * 2.4 1.4 171
HEWINTA 9519 .4 .0 * 2.7 2.1 129
HICKERSON PARK 9145 1.3 .1 1300* 2.6 2.0 130
HOLE-IN-ROCK 9150 .8 .0 * 2.2 2.0 110
INDIAN CREEK 9425 1.5 1.9 79* 2.7 2.3 117
KELLEY R.S. 8180 1.3 .5 260* 2.7 1.9 142
SPIRIT LK 10235 1.8 -M * 3.5 -M *
STEEL CREEK PARK 10200 .2 1.4 14* 3.2 2.4 133
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Basin Index (%) 156* 131
UPPER BEAR RIVER
BEAR RIVER RS 8777 .7 -M * 2.4 -M *
BUG LAKE 7950 .5 .4 125* 2.0 2.2 91
BURTS MILLER RANCH 8000 .7 -M * 1.3 -M *
CHALK CREEK #1 8993 2.4 1.5 160* 3.6 3.1 116
HAYDEN FORK 9212 .7 .2 350* 3.3 2.6 127
KELLEY R.S. 8180 1.3 .5 260* 2.7 1.9 142
LILY LAKE 9156 .7 .6 117* 3.4 2.5 136
MONTE CRISTO 8960 1.1 .5 220* 2.6 2.9 90
SALT RIVER SUMMIT 7760 1.0 .2 500* 2.6 1.8 144
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Basin Index (%) 197* 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.