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 MONDAY: OCTOBER 8 , 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 .2 .0 * 1.7 .5 340
COTTONWOOD CREEK 7600 .4 .0 * 1.7 .7 243
GRANITE CREEK 6770 .1 .0 * 1.3 .4 325
GRASSY LAKE 7265 .5 .2 250* 1.6 .8 200
GROS VENTRE SUMMIT 8750 .8 .3 267* 1.7 .4 425
LEWIS LAKE DIVIDE 7850 .4 .0 * -M .7 *
PHILLIPS BENCH 8200 .1 .1 100* 1.3 .6 217
SALT RIVER SUMMIT 7600 .3 .0 * 1.1 .5 220
SNAKE RIVER STATION 6920 .2 .0 * 1.7 .5 340
SPRING CREEK DIVIDE 9000 .4 .2 200* .8 .6 133
THUMB DIVIDE 7980 .9 .0 * 1.9 .5 380
TOGWOTEE PASS 9580 1.6 .5 320* 2.4 .7 343
TWO OCEAN PLATEAU 9240 2.5 .6 417* 2.7 .7 386
WILLOW CREEK 8450 .9 .2 450* 1.9 .9 211
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Basin wide percent of average 324* 279
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.0 .8 250* 1.8 .5 360
BLACK BEAR 8170 1.3 .6 217* 2.2 .8 275
CANYON 8090 1.1 .2 550* 1.9 .4 475
FISHER CREEK 9100 3.0 .6 500* -M .8 *
MADISON PLATEAU 7750 1.2 .3 400* 2.1 .6 350
NORTHEAST ENTRANCE 7350 -M .0 * -M .4 *
PARKER PEAK 9400 2.0 .8 250* .0 .5 0
SYLVAN LAKE 8420 1.1 .6 183* 2.2 .6 367
THUMB DIVIDE 7980 .9 .0 * 1.9 .5 380
TWO OCEAN PLATEAU 9240 2.5 .6 417* 2.7 .7 386
WHISKEY CREEK 6800 .9 .1 900* 2.1 .5 420
WHITE MILL 8700 2.1 .4 525* 1.6 .6 267
WOLVERINE 7650 .2 .0 * 1.5 .4 375
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Basin wide percent of average 344* 328
WIND RIVER
BURROUGHS CREEK 8750 .2 .2 100* 1.4 .4 350
COLD SPRINGS 9630 .5 .2 250* 1.4 .5 280
DEER PARK 9700 .9 .6 150* 2.0 .6 333
HOBBS PARK 10100 .8 .5 160* 2.1 .5 420
LITTLE WARM 9370 .2 .3 67* 1.2 .4 300
SOUTH PASS 9040 .3 .2 150* 1.3 .5 260
ST. LAWRENCE ALT 8620 .3 .1 300* 1.0 .4 250
TOGWOTEE PASS 9580 1.6 .5 320* 2.4 .7 343
TOWNSEND CREEK 8700 .5 .2 250* 1.5 .5 300
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Basin wide percent of average 189* 318
BIGHORN BASIN
BALD MTN. 9380 1.3 1.1 118* 1.9 .6 317
BEAR TRAP MEADOW 8200 .1 .2 50* .6 .4 150
BLACKWATER 9780 1.9 1.1 173* 2.1 .6 350
BONE SPRINGS DIV 9350 -M .9 * -M .6 *
EVENING STAR 9200 2.0 .8 250* 1.4 .7 200
GRAVE SPRINGS 8550 .4 .2 200* 1.1 .5 220
KIRWIN 9550 1.9 .6 317* -M .4 *
MARQUETTE 8760 .9 .6 150* 1.4 .5 280
MIDDLE POWDER 7760 .2 .4 50* .8 .6 133
OWL CREEK 8975 .7 .2 350* 1.5 .3 500
POWDER RIVER PASS 9480 .4 .4 100* 1.4 .5 280
SHELL CREEK 9580 1.5 1.1 136* 2.2 .5 440
SYLVAN LAKE 8420 1.1 .6 183* 2.2 .6 367
SYLVAN ROAD 7120 .5 .0 * 2.0 .5 400
TIMBER CREEK 7950 1.1 .0 * 2.0 .4 500
YOUNTS PEAK 8350 .9 .4 225* 1.9 .4 475
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Basin wide percent of average 173* 317
SHOSHONE RIVER
BLACKWATER 9780 1.9 1.1 173* 2.1 .6 350
EVENING STAR 9200 2.0 .8 250* 1.4 .7 200
KIRWIN 9550 1.9 .6 317* -M .4 *
MARQUETTE 8760 .9 .6 150* 1.4 .5 280
SYLVAN LAKE 8420 1.1 .6 183* 2.2 .6 367
SYLVAN ROAD 7120 .5 .0 * 2.0 .5 400
YOUNTS PEAK 8350 .9 .4 225* 1.9 .4 475
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Basin wide percent of average 212* 333
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .2 50* .6 .4 150
BIG GOOSE 7990 .5 .2 250* 1.1 .5 220
BONE SPRINGS DIV 9350 -M .9 * -M .6 *
BURGESS JUNCTION 7880 .3 .4 75* 1.0 .5 200
CLOUD PEAK RESERVOIR 9860 .4 .2 200* 1.5 .6 250
DOME LAKE 8880 .4 .5 80* 1.6 .6 267
GRAVE SPRINGS 8550 .4 .2 200* 1.1 .5 220
HANSEN SAWMILL 8360 .4 .2 200* 1.0 .4 250
MIDDLE POWDER 7760 .2 .4 50* .8 .6 133
POWDER RIVER PASS 9480 .4 .4 100* 1.4 .5 280
SUCKER CREEK 8880 .5 .4 125* .9 .6 150
TIE CREEK 6870 .3 .0 * 1.0 .6 167
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Basin wide percent of average 116* 207
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .6 .6 100
COLE CANYON 5910 .0 .0 100* .4 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .5 .6 83
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Basin wide percent of average * 92
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100* 1.3 .6 217
DIVIDE PEAK 8860 -M .4 * -M .6 *
ELK RIVER 8700 .0 .0 100* 1.2 .5 240
JOE WRIGHT 10120 .0 .5 0* 1.5 .8 188
NORTH FRENCH CREEK 10130 .5 .7 71* 1.3 .8 162
OLD BATTLE 9920 .8 .7 114* 1.7 .8 212
SAGE CREEK BASIN 7850 .0 .2 0* 1.0 .4 250
SOUTH BRUSH CREEK 8440 .2 .1 200* 1.0 .6 167
TOWER 10500 .3 .6 50* 1.7 .9 189
WEBBER SPRINGS 9250 .1 .3 33* 1.3 .7 186
WILLOW CREEK PASS 9540 .0 .2 0* .6 .5 120
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Basin wide percent of average 58* 191
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .0 .6 0* .7 .6 117
CASPER MTN. 7850 .2 .3 67* .9 .6 150
DEADMAN HILL 10220 1.7 .6 283* .5 .6 83
DEER PARK 9700 .9 .6 150* 2.0 .6 333
LAPRELE CREEK 8375 .0 .2 0* .6 .5 120
RENO HILL 8500 .4 .4 100* .9 .6 150
ROACH 9700 .1 .2 50* .9 .5 180
SAND LAKE 10050 .5 .8 62* 1.0 .7 143
SOUTH PASS 9040 .3 .2 150* 1.3 .5 260
WINDY PEAK 7900 .0 .0 100* .3 .4 75
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Basin wide percent of average 105* 162
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .8 .5 160
DIVIDE PEAK 8860 -M .4 * -M .6 *
OLD BATTLE 9920 .8 .7 114* 1.7 .8 212
SANDSTONE RS 8150 .0 .0 100* .8 .5 160
WHISKEY PARK 8950 .1 .2 50* 1.3 .7 186
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Basin wide percent of average 100* 184
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .2 .2 100* 1.1 .4 275
BLIND BULL SUM 8900 .5 .2 250* .9 .5 180
EAST RIM DIVIDE 7930 .0 .0 100* 1.0 .3 333
ELKHART PARK G.S. 9400 .3 .1 300* 1.0 .5 200
GROS VENTRE SUMMIT 8750 .8 .3 267* 1.7 .4 425
KENDALL R.S. 7740 .1 .0 * 1.1 .4 275
LOOMIS PARK 8240 .1 .1 100* 1.1 .4 275
NEW FORK LAKE 8340 .2 .0 * 1.1 .4 275
SNIDER BASIN 8060 .3 .0 * .5 .4 125
SPRING CREEK DIVIDE 9000 .4 .2 200* .8 .6 133
TRIPLE PEAK 8500 .2 .1 200* 1.0 .5 200
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Basin wide percent of average 208* 235
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .7 .3 233
HEWINTA 9500 -M .2 * 2.7 .6 450
HICKERSON PARK 9100 .1 .0 * 2.3 .4 575
HOLE-IN-ROCK 9150 .0 .0 100* 2.2 .4 550
INDIAN CREEK 9425 .9 .2 450* 1.0 .6 167
KELLEY R.S. 8180 .7 .1 700* 1.4 .5 280
STEEL CREEK PARK 10100 2.2 .6 367* -M .5 *
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Basin wide percent of average 422* 368
UPPER BEAR RIVER
BUG LAKE 7950 .1 .4 25* .3 .5 60
HAYDEN FORK 9100 .2 .2 100* 1.4 .6 233
KELLEY R.S. 8180 .7 .1 700* 1.4 .5 280
LILY LAKE 9050 -M .2 * -M .6 *
MONTE CRISTO 8960 .8 .4 200* 1.5 .7 214
SALT RIVER SUMMIT 7600 .3 .0 * 1.1 .5 220
TRIAL LAKE 9960 .3 .6 50* .9 .7 129
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Basin wide percent of average 124* 189
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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.