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 23 , 2007
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 1.2 .4 300* 5.0 1.5 333
COTTONWOOD CREEK 7600 2.1 .5 420* 5.0 2.2 227
GRANITE CREEK 6770 1.4 .3 467* 4.0 1.3 308
GRASSY LAKE 7265 1.5 .9 167* 5.9 2.5 236
GROS VENTRE SUMMIT 8750 2.0 1.0 200* 4.0 1.3 308
LEWIS LAKE DIVIDE 7850 1.4 .7 200* 5.6 2.3 243
PHILLIPS BENCH 8200 1.6 .8 200* 4.9 1.8 272
SALT RIVER SUMMIT 7600 .3 .2 150* 2.4 1.4 171
SNAKE RIVER STATION 6920 .6 .3 200* 4.7 1.6 294
SPRING CREEK DIVIDE 9000 1.9 .9 211* 3.3 1.9 174
THUMB DIVIDE 7980 1.1 .5 220* 4.2 1.5 280
TOGWOTEE PASS 9580 4.7 1.8 261* 5.5 2.1 262
TWO OCEAN PLATEAU 9240 5.8 2.1 276* 6.1 2.3 265
WILLOW CREEK 8450 3.0 1.1 273* 6.3 2.7 233
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Basin wide percent of average 249* 253
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.6 2.0 230* 4.4 1.6 275
BLACK BEAR 8170 3.8 1.8 211* 6.0 2.6 231
CANYON 8090 1.2 .4 300* 3.9 1.3 300
FISHER CREEK 9100 5.9 1.8 328* 6.8 2.4 283
MADISON PLATEAU 7750 1.7 1.0 170* 4.7 1.8 261
NORTHEAST ENTRANCE 7350 .3 .2 150* 3.2 1.1 291
PARKER PEAK 9400 4.3 1.9 226* 5.3 1.7 312
SYLVAN LAKE 8420 2.2 1.4 157* 5.6 1.9 295
THUMB DIVIDE 7980 1.1 .5 220* 4.2 1.5 280
TWO OCEAN PLATEAU 9240 5.8 2.1 276* 6.1 2.3 265
WHISKEY CREEK 6800 .9 .4 225* 4.4 1.6 275
WHITE MILL 8700 4.3 1.4 307* 4.9 2.0 245
WOLVERINE 7650 .8 .3 267* 3.3 1.3 254
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Basin wide percent of average 243* 272
WIND RIVER
BURROUGHS CREEK 8750 2.0 .6 333* 3.8 1.2 317
COLD SPRINGS 9630 .0 .6 0* 2.3 1.4 164
DEER PARK 9700 1.7 1.7 100* 3.1 1.8 172
HOBBS PARK 10100 1.5 1.5 100* 3.3 1.6 206
LITTLE WARM 9370 1.2 .7 171* 3.1 1.3 238
SOUTH PASS 9040 .5 1.0 50* 2.4 1.6 150
ST. LAWRENCE ALT 8620 .0 .5 0* 1.4 1.3 108
TOGWOTEE PASS 9580 4.7 1.8 261* 5.5 2.1 262
TOWNSEND CREEK 8700 .4 .7 57* 2.6 1.6 162
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Basin wide percent of average 132* 198
BIGHORN BASIN
BALD MTN. 9380 3.0 2.1 143* 3.6 1.8 200
BEAR TRAP MEADOW 8200 .8 .4 200* 1.9 1.3 146
BLACKWATER 9780 5.2 2.3 226* 4.9 2.0 245
BONE SPRINGS DIV 9350 2.1 2.0 105 3.9 1.8 217
EVENING STAR 9200 4.3 2.0 215* 6.4 2.1 305
GRAVE SPRINGS 8550 1.3 .7 186* 2.5 1.6 156
KIRWIN 9550 3.5 1.3 269 4.7 1.3 362
MARQUETTE 8760 1.0 1.4 71 3.0 1.7 176
MIDDLE POWDER 7760 2.4 .9 267* 2.4 1.9 126
OWL CREEK 8975 .7 .6 117 2.4 .9 267
POWDER RIVER PASS 9480 1.3 .9 144* 3.1 1.4 221
SHELL CREEK 9580 3.9 2.1 186 4.6 1.5 307
SYLVAN LAKE 8420 2.2 1.4 157* 5.6 1.9 295
SYLVAN ROAD 7120 .5 .3 167* 5.0 1.6 312
TIMBER CREEK 7950 .5 .6 83* 3.1 1.2 258
YOUNTS PEAK 8350 2.0 1.0 200* 5.3 1.3 408
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Basin wide percent of average 173* 247
SHOSHONE RIVER
BLACKWATER 9780 5.2 2.3 226* 4.9 2.0 245
EVENING STAR 9200 4.3 2.0 215* 6.4 2.1 305
KIRWIN 9550 3.5 1.3 269 4.7 1.3 362
MARQUETTE 8760 1.0 1.4 71 3.0 1.7 176
SYLVAN LAKE 8420 2.2 1.4 157* 5.6 1.9 295
SYLVAN ROAD 7120 .5 .3 167* 5.0 1.6 312
YOUNTS PEAK 8350 2.0 1.0 200* 5.3 1.3 408
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Basin wide percent of average 193* 293
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .8 .4 200* 1.9 1.3 146
BIG GOOSE 7990 1.9 .6 317* 4.1 1.6 256
BONE SPRINGS DIV 9350 2.1 2.0 105 3.9 1.8 217
BURGESS JUNCTION 7880 1.6 1.1 145* 3.3 1.6 206
CLOUD PEAK RESERVOIR 9860 3.1 1.0 310* 5.2 1.9 274
DOME LAKE 8880 2.1 1.3 162* 4.4 1.8 244
GRAVE SPRINGS 8550 1.3 .7 186* 2.5 1.6 156
HANSEN SAWMILL 8360 1.3 .5 260* 2.9 1.3 223
MIDDLE POWDER 7760 2.4 .9 267* 2.4 1.9 126
POWDER RIVER PASS 9480 1.3 .9 144* 3.1 1.4 221
SUCKER CREEK 8880 1.9 .9 211* 3.7 1.8 206
TIE CREEK 6870 .5 .4 125* 2.9 1.8 161
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Basin wide percent of average 190* 204
BELLE FOURCHE
BLIND PARK 6890 .0 .3 0* 1.5 1.9 79
COLE CANYON 5910 .0 .4 0* 1.0 -M *
NORTH RAPID CREEK 6130 .0 .3 0* 1.2 1.8 67
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Basin wide percent of average 0* 73
UPPER N. PLATTE RIVER
COLUMBINE 9160 .5 .4 125* 3.5 1.8 194
DIVIDE PEAK 8860 1.4 1.2 117* 2.6 2.0 130
ELK RIVER 8700 .0 .4 0* 3.2 1.6 200
JOE WRIGHT 10120 2.3 1.7 135* 4.8 2.5 192
NORTH FRENCH CREEK 10130 2.3 2.3 100* 3.7 2.5 148
OLD BATTLE 9920 2.6 2.1 124* 4.1 2.6 158
SAGE CREEK BASIN 7850 .5 .6 83* 2.1 1.1 191
SOUTH BRUSH CREEK 8440 1.2 .5 240* 3.1 1.9 163
TOWER 10500 2.8 2.3 122* 4.8 2.9 166
WEBBER SPRINGS 9250 1.4 1.2 117* 3.5 2.3 152
WILLOW CREEK PASS 9540 2.1 .7 300* 3.0 1.5 200
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Basin wide percent of average 128* 169
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.3 1.6 81* 2.6 1.8 144
CASPER MTN. 7850 1.6 1.2 133* 3.3 1.8 183
DEADMAN HILL 10220 2.2 1.6 138* 3.3 1.8 183
DEER PARK 9700 1.7 1.7 100* 3.1 1.8 172
LAPRELE CREEK 8375 .7 .7 100* 2.2 1.4 157
RENO HILL 8500 2.1 1.2 175* 3.6 1.8 200
ROACH 9700 2.0 .8 250* 3.2 1.7 188
SAND LAKE 10050 3.7 2.3 161* 4.2 2.3 183
SOUTH PASS 9040 .5 1.0 50* 2.4 1.6 150
WINDY PEAK 7900 .8 .3 267* 1.8 1.3 138
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Basin wide percent of average 134* 172
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .5 .3 167* 2.0 1.4 143
DIVIDE PEAK 8860 1.4 1.2 117* 2.6 2.0 130
OLD BATTLE 9920 2.6 2.1 124* 4.1 2.6 158
SANDSTONE RS 8150 .3 .3 100* 2.2 1.7 129
WHISKEY PARK 8950 1.2 1.1 109* 3.7 2.1 176
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Basin wide percent of average 120* 149
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .8 100* 1.9 1.3 146
BLIND BULL SUM 8900 1.8 1.1 164* 3.1 1.6 194
EAST RIM DIVIDE 7930 .4 .3 133* 1.9 1.0 190
ELKHART PARK G.S. 9400 1.1 .5 220* 2.5 1.4 179
GROS VENTRE SUMMIT 8750 2.0 1.0 200* 4.0 1.3 308
KENDALL R.S. 7740 .8 .3 267* 2.4 1.1 218
LOOMIS PARK 8240 1.1 .6 183* 2.5 1.3 192
NEW FORK LAKE 8340 .7 .3 233* 2.3 1.1 209
SNIDER BASIN 8060 .4 .4 100* 1.9 1.2 158
SPRING CREEK DIVIDE 9000 1.9 .9 211* 3.3 1.9 174
TRIPLE PEAK 8500 1.5 .7 214* 4.4 1.6 275
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Basin wide percent of average 181* 204
LOWER GREEN RIVER
HAMS FORK 7840 .1 .2 50* 1.6 1.1 145
HEWINTA 9500 -M .6 * 4.3 1.8 239
HICKERSON PARK 9100 .2 .2 100* 2.9 1.3 223
HOLE-IN-ROCK 9150 .2 .2 100* 3.3 1.2 275
INDIAN CREEK 9425 1.8 1.0 180* 2.7 1.9 142
KELLEY R.S. 8180 .7 .6 117* 2.8 1.6 175
STEEL CREEK PARK 10100 3.7 1.2 308* 4.6 1.7 271
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Basin wide percent of average 197* 209
UPPER BEAR RIVER
BUG LAKE 7950 .3 .9 33* 1.2 1.7 71
HAYDEN FORK 9100 .6 .6 100* 3.4 1.8 189
KELLEY R.S. 8180 .7 .6 117* 2.8 1.6 175
LILY LAKE 9050 .6 .7 86* 3.5 1.8 194
MONTE CRISTO 8960 .9 1.2 75* 3.4 2.1 162
SALT RIVER SUMMIT 7600 .3 .2 150* 2.4 1.4 171
TRIAL LAKE 9960 1.5 1.4 107* 2.8 2.1 133
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Basin wide percent of average 88* 156
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.
Reference period for average conditions is 1971-2000.
Provisional data, subject to revision.
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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.