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 7 , 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 .0 * 1.5 .4 375
COTTONWOOD CREEK 7600 .4 .0 * 1.4 .6 233
GRANITE CREEK 6770 .1 .0 * 1.2 .3 400
GRASSY LAKE 7265 .3 .1 300* 1.4 .7 200
GROS VENTRE SUMMIT 8750 .7 .3 233* 1.6 .4 400
LEWIS LAKE DIVIDE 7850 .4 .0 * -M .6 *
PHILLIPS BENCH 8200 .0 .1 0* 1.2 .5 240
SALT RIVER SUMMIT 7600 .4 .0 * .9 .4 225
SNAKE RIVER STATION 6920 .2 .0 * 1.6 .4 400
SPRING CREEK DIVIDE 9000 .3 .1 300* .7 .5 140
THUMB DIVIDE 7980 .9 .0 * 1.8 .4 450
TOGWOTEE PASS 9580 1.5 .4 375* 2.2 .6 367
TWO OCEAN PLATEAU 9240 2.3 .5 460* 2.4 .6 400
WILLOW CREEK 8450 .9 .2 450* 1.7 .7 243
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Basin wide percent of average 353* 302
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.7 .8 212* 1.4 .4 350
BLACK BEAR 8170 1.1 .5 220* 2.0 .7 286
CANYON 8090 1.0 .1 1000* 1.8 .4 450
FISHER CREEK 9100 2.9 .6 483* 2.8 .7 400
MADISON PLATEAU 7750 1.2 .3 400* 2.0 .5 400
NORTHEAST ENTRANCE 7350 .2 .0 * 1.5 .3 500
PARKER PEAK 9400 1.8 .8 225* .0 .5 0
SYLVAN LAKE 8420 .9 .6 150* 1.9 .5 380
THUMB DIVIDE 7980 .9 .0 * 1.8 .4 450
TWO OCEAN PLATEAU 9240 2.3 .5 460* 2.4 .6 400
WHISKEY CREEK 6800 .9 .1 900* 1.9 .4 475
WHITE MILL 8700 2.0 .4 500* 1.9 .5 380
WOLVERINE 7650 .2 .0 * 1.3 .4 325
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Basin wide percent of average 336* 360
WIND RIVER
BURROUGHS CREEK 8750 .2 .2 100* 1.3 .3 433
COLD SPRINGS 9630 .5 .2 250* 1.4 .4 350
DEER PARK 9700 .9 .5 180* 1.9 .5 380
HOBBS PARK 10100 .7 .5 140* 1.9 .4 475
LITTLE WARM 9370 .1 .3 33* 1.1 .3 367
SOUTH PASS 9040 .3 .2 150* 1.2 .4 300
ST. LAWRENCE ALT 8620 .4 .1 400* .9 .3 300
TOGWOTEE PASS 9580 1.5 .4 375* 2.2 .6 367
TOWNSEND CREEK 8700 .6 .1 600* 1.5 .4 375
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Basin wide percent of average 208* 372
BIGHORN BASIN
BALD MTN. 9380 .4 1.0 40* .8 .5 160
BEAR TRAP MEADOW 8200 .1 .1 100* .5 .3 167
BLACKWATER 9780 1.8 1.0 180* 1.9 .5 380
BONE SPRINGS DIV 9350 -M .8 * -M .5 *
EVENING STAR 9200 1.8 .7 257* 1.2 .6 200
GRAVE SPRINGS 8550 .4 .1 400* 1.0 .4 250
KIRWIN 9550 1.8 .6 300* -M .4 *
MARQUETTE 8760 .7 .6 117* 1.1 .5 220
MIDDLE POWDER 7760 .3 .4 75* .8 .5 160
OWL CREEK 8975 .7 .2 350* 1.4 .2 700
POWDER RIVER PASS 9480 .1 .4 25* 1.1 .4 275
SHELL CREEK 9580 1.0 1.1 91* 1.7 .4 425
SYLVAN LAKE 8420 .9 .6 150* 1.9 .5 380
SYLVAN ROAD 7120 .5 .0 * 1.9 .4 475
TIMBER CREEK 7950 1.0 .0 * 1.9 .3 633
YOUNTS PEAK 8350 .9 .3 300* 1.8 .4 450
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Basin wide percent of average 154* 322
SHOSHONE RIVER
BLACKWATER 9780 1.8 1.0 180* 1.9 .5 380
EVENING STAR 9200 1.8 .7 257* 1.2 .6 200
KIRWIN 9550 1.8 .6 300* -M .4 *
MARQUETTE 8760 .7 .6 117* 1.1 .5 220
SYLVAN LAKE 8420 .9 .6 150* 1.9 .5 380
SYLVAN ROAD 7120 .5 .0 * 1.9 .4 475
YOUNTS PEAK 8350 .9 .3 300* 1.8 .4 450
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Basin wide percent of average 208* 338
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .1 100* .5 .3 167
BIG GOOSE 7990 .4 .1 400* .7 .4 175
BONE SPRINGS DIV 9350 -M .8 * -M .5 *
BURGESS JUNCTION 7880 .1 .4 25* .7 .4 175
CLOUD PEAK RESERVOIR 9860 .3 .2 150* 1.2 .5 240
DOME LAKE 8880 .1 .5 20* 1.2 .5 240
GRAVE SPRINGS 8550 .4 .1 400* 1.0 .4 250
HANSEN SAWMILL 8360 .3 .1 300* .8 .4 200
MIDDLE POWDER 7760 .3 .4 75* .8 .5 160
POWDER RIVER PASS 9480 .1 .4 25* 1.1 .4 275
SUCKER CREEK 8880 .3 .3 100* .5 .5 100
TIE CREEK 6870 .1 .0 * .6 .5 120
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Basin wide percent of average 92* 190
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * .4 .5 80
COLE CANYON 5910 .0 .0 100* .1 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .4 .5 80
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Basin wide percent of average * 80
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100* 1.1 .5 220
DIVIDE PEAK 8860 -M .4 * -M .5 *
ELK RIVER 8700 .0 .0 100* 1.0 .4 250
JOE WRIGHT 10120 .2 .4 50* 1.5 .7 214
NORTH FRENCH CREEK 10130 .5 .7 71* 1.2 .7 171
OLD BATTLE 9920 .7 .6 117* 1.3 .7 186
SAGE CREEK BASIN 7850 .2 .1 200* .8 .3 267
SOUTH BRUSH CREEK 8440 .4 .1 400* .9 .5 180
TOWER 10500 .2 .5 40* 1.6 .8 200
WEBBER SPRINGS 9250 .2 .3 67* 1.2 .6 200
WILLOW CREEK PASS 9540 .2 .1 200* .5 .4 125
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Basin wide percent of average 93* 198
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .0 .5 0* .7 .5 140
CASPER MTN. 7850 .4 .3 133* .7 .5 140
DEADMAN HILL 10220 .1 .5 20* .5 .5 100
DEER PARK 9700 .9 .5 180* 1.9 .5 380
LAPRELE CREEK 8375 .1 .1 100* .6 .4 150
RENO HILL 8500 .5 .3 167* .7 .5 140
ROACH 9700 .1 .1 100* .8 .5 160
SAND LAKE 10050 .5 .8 62* 1.0 .6 167
SOUTH PASS 9040 .3 .2 150* 1.2 .4 300
WINDY PEAK 7900 .1 .0 * .3 .3 100
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Basin wide percent of average 88* 179
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .8 .4 200
DIVIDE PEAK 8860 -M .4 * -M .5 *
OLD BATTLE 9920 .7 .6 117* 1.3 .7 186
SANDSTONE RS 8150 .0 .0 100* .7 .5 140
WHISKEY PARK 8950 .2 .2 100* 1.2 .6 200
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Basin wide percent of average 112* 182
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .2 50* 1.0 .4 250
BLIND BULL SUM 8900 .4 .2 200* .8 .4 200
EAST RIM DIVIDE 7930 .0 .0 100* .9 .3 300
ELKHART PARK G.S. 9400 .2 .1 200* 1.0 .4 250
GROS VENTRE SUMMIT 8750 .7 .3 233* 1.6 .4 400
KENDALL R.S. 7740 .1 .0 * 1.0 .3 333
LOOMIS PARK 8240 .0 .1 0* .9 .4 225
NEW FORK LAKE 8340 .2 .0 * 1.0 .3 333
SNIDER BASIN 8060 .3 .0 * .4 .3 133
SPRING CREEK DIVIDE 9000 .3 .1 300* .7 .5 140
TRIPLE PEAK 8500 .2 .1 200* .8 .4 200
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Basin wide percent of average 173* 246
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .6 .3 200
HEWINTA 9500 .0 .2 0* 2.5 .5 500
HICKERSON PARK 9100 .1 .0 * 2.2 .3 733
HOLE-IN-ROCK 9150 .0 .0 100* 2.2 .3 733
INDIAN CREEK 9425 .6 .2 300* .8 .5 160
KELLEY R.S. 8180 .7 .1 700* 1.3 .4 325
STEEL CREEK PARK 10100 -M .5 * -M .5 *
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Basin wide percent of average 260* 417
UPPER BEAR RIVER
BUG LAKE 7950 .2 .3 67* .2 .5 40
HAYDEN FORK 9100 .3 .2 150* 1.4 .5 280
KELLEY R.S. 8180 .7 .1 700* 1.3 .4 325
LILY LAKE 9050 -M .2 * -M .5 *
MONTE CRISTO 8960 .7 .4 175* 1.3 .6 217
SALT RIVER SUMMIT 7600 .4 .0 * .9 .4 225
TRIAL LAKE 9960 .4 .5 80* .8 .6 133
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Basin wide percent of average 153* 197
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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.