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 9 , 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 .1 100* 1.7 .5 340
COTTONWOOD CREEK 7600 .3 .1 300* 1.7 .8 212
GRANITE CREEK 6770 .1 .1 100* 1.3 .5 260
GRASSY LAKE 7265 .2 .2 100* 1.6 .9 178
GROS VENTRE SUMMIT 8750 .7 .3 233* 1.7 .5 340
LEWIS LAKE DIVIDE 7850 .3 .1 300* -M .9 *
PHILLIPS BENCH 8200 .0 .1 0* 1.3 .6 217
SALT RIVER SUMMIT 7600 .3 .0 * 1.1 .5 220
SNAKE RIVER STATION 6920 .0 .0 100* 1.7 .6 283
SPRING CREEK DIVIDE 9000 .4 .2 200* .9 .7 129
THUMB DIVIDE 7980 .7 .1 700* 1.9 .5 380
TOGWOTEE PASS 9580 1.6 .6 267* 2.4 .7 343
TWO OCEAN PLATEAU 9240 2.5 .7 357* 2.7 .8 338
WILLOW CREEK 8450 .6 .2 300* 1.9 1.0 190
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Basin wide percent of average 268* 255
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.9 .9 211* 1.8 .6 300
BLACK BEAR 8170 1.4 .6 233* 2.2 .9 244
CANYON 8090 1.0 .2 500* 1.9 .5 380
FISHER CREEK 9100 2.9 .7 414* 3.1 .9 344
MADISON PLATEAU 7750 1.2 .3 400* 2.0 .7 286
NORTHEAST ENTRANCE 7350 -M .1 * -M .4 *
PARKER PEAK 9400 1.9 .9 211* .0 .6 0
SYLVAN LAKE 8420 1.0 .7 143* 2.1 .7 300
THUMB DIVIDE 7980 .7 .1 700* 1.9 .5 380
TWO OCEAN PLATEAU 9240 2.5 .7 357* 2.7 .8 338
WHISKEY CREEK 6800 .8 .1 800* 2.1 .6 350
WHITE MILL 8700 2.1 .5 420* 2.2 .7 314
WOLVERINE 7650 .1 .1 100* 1.4 .5 280
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Basin wide percent of average 302* 292
WIND RIVER
BURROUGHS CREEK 8750 .2 .3 67* 1.3 .4 325
COLD SPRINGS 9630 .4 .2 200* 1.4 .5 280
DEER PARK 9700 .8 .6 133* 2.0 .7 286
HOBBS PARK 10100 .7 .5 140* 2.0 .6 333
LITTLE WARM 9370 .1 .3 33* 1.2 .5 240
SOUTH PASS 9040 .3 .3 100* 1.3 .6 217
ST. LAWRENCE ALT 8620 .1 .1 100* 1.0 .5 200
TOGWOTEE PASS 9580 1.6 .6 267* 2.4 .7 343
TOWNSEND CREEK 8700 .4 .2 200* 1.6 .6 267
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Basin wide percent of average 148* 278
BIGHORN BASIN
BALD MTN. 9380 1.3 1.1 118* 2.0 .6 333
BEAR TRAP MEADOW 8200 .1 .2 50* .7 .5 140
BLACKWATER 9780 1.9 1.1 173* 2.1 .7 300
BONE SPRINGS DIV 9350 -M 1.0 * -M .7 *
EVENING STAR 9200 2.0 .9 222* 1.6 .7 229
GRAVE SPRINGS 8550 .4 .2 200* 1.1 .6 183
KIRWIN 9550 1.8 .6 300* 2.6 .5 520
MARQUETTE 8760 .6 .7 86* 1.3 .6 217
MIDDLE POWDER 7760 .3 .4 75* .9 .7 129
OWL CREEK 8975 .8 .3 267* 1.5 .3 500
POWDER RIVER PASS 9480 .6 .4 150* 1.6 .5 320
SHELL CREEK 9580 1.6 1.2 133* 2.4 .5 480
SYLVAN LAKE 8420 1.0 .7 143* 2.1 .7 300
SYLVAN ROAD 7120 .4 .1 400* 2.0 .6 333
TIMBER CREEK 7950 .9 .1 900* 2.0 .4 500
YOUNTS PEAK 8350 .9 .4 225* 1.9 .5 380
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Basin wide percent of average 174* 307
SHOSHONE RIVER
BLACKWATER 9780 1.9 1.1 173* 2.1 .7 300
EVENING STAR 9200 2.0 .9 222* 1.6 .7 229
KIRWIN 9550 1.8 .6 300* 2.6 .5 520
MARQUETTE 8760 .6 .7 86* 1.3 .6 217
SYLVAN LAKE 8420 1.0 .7 143* 2.1 .7 300
SYLVAN ROAD 7120 .4 .1 400* 2.0 .6 333
YOUNTS PEAK 8350 .9 .4 225* 1.9 .5 380
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Basin wide percent of average 191* 316
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .2 50* .7 .5 140
BIG GOOSE 7990 .4 .2 200* 1.1 .6 183
BONE SPRINGS DIV 9350 -M 1.0 * -M .7 *
BURGESS JUNCTION 7880 .3 .5 60* 1.1 .6 183
CLOUD PEAK RESERVOIR 9860 .3 .3 100* 1.6 .7 229
DOME LAKE 8880 .3 .5 60* 1.6 .7 229
GRAVE SPRINGS 8550 .4 .2 200* 1.1 .6 183
HANSEN SAWMILL 8360 .3 .2 150* 1.1 .5 220
MIDDLE POWDER 7760 .3 .4 75* .9 .7 129
POWDER RIVER PASS 9480 .6 .4 150* 1.6 .5 320
SUCKER CREEK 8880 .4 .4 100* 1.0 .6 167
TIE CREEK 6870 .0 .0 100* 1.0 .7 143
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Basin wide percent of average 103* 191
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .6 .7 86
COLE CANYON 5910 .0 .0 100* .6 -M *
NORTH RAPID CREEK 6130 -M .1 * .6 .7 86
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Basin wide percent of average * 86
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100* 1.4 .6 233
DIVIDE PEAK 8860 -M .4 * -M .7 *
ELK RIVER 8700 .0 .1 0* 1.2 .6 200
JOE WRIGHT 10120 .2 .5 40* 1.5 .9 167
NORTH FRENCH CREEK 10130 .5 .8 62* 1.3 .9 144
OLD BATTLE 9920 .8 .7 114* 1.8 1.0 180
SAGE CREEK BASIN 7850 .0 .2 0* 1.0 .4 250
SOUTH BRUSH CREEK 8440 .1 .1 100* 1.1 .7 157
TOWER 10500 .1 .6 17* 1.9 1.1 173
WEBBER SPRINGS 9250 .0 .3 0* 1.3 .8 162
WILLOW CREEK PASS 9540 .0 .2 0* .6 .5 120
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Basin wide percent of average 49* 175
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .0 .6 0* .7 .7 100
CASPER MTN. 7850 .1 .3 33* .9 .7 129
DEADMAN HILL 10220 1.9 .6 317* .6 .7 86
DEER PARK 9700 .8 .6 133* 2.0 .7 286
LAPRELE CREEK 8375 .0 .2 0* .7 .5 140
RENO HILL 8500 .4 .4 100* .9 .7 129
ROACH 9700 .1 .2 50* .9 .6 150
SAND LAKE 10050 .6 .9 67* 1.1 .8 138
SOUTH PASS 9040 .3 .3 100* 1.3 .6 217
WINDY PEAK 7900 .0 .1 0* .5 .5 100
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Basin wide percent of average 100* 148
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .8 .5 160
DIVIDE PEAK 8860 -M .4 * -M .7 *
OLD BATTLE 9920 .8 .7 114* 1.8 1.0 180
SANDSTONE RS 8150 .0 .1 0* .8 .6 133
WHISKEY PARK 8950 .0 .3 0* 1.2 .8 150
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Basin wide percent of average 73* 159
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .2 50* 1.1 .5 220
BLIND BULL SUM 8900 .5 .2 250* .9 .6 150
EAST RIM DIVIDE 7930 .0 .0 100* 1.1 .4 275
ELKHART PARK G.S. 9400 .4 .1 400* 1.2 .5 240
GROS VENTRE SUMMIT 8750 .7 .3 233* 1.7 .5 340
KENDALL R.S. 7740 .0 .0 100* 1.0 .4 250
LOOMIS PARK 8240 .0 .1 0* 1.1 .5 220
NEW FORK LAKE 8340 .0 .0 100* 1.2 .4 300
SNIDER BASIN 8060 .2 .1 200* .5 .4 125
SPRING CREEK DIVIDE 9000 .4 .2 200* .9 .7 129
TRIPLE PEAK 8500 .1 .1 100* .9 .6 150
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Basin wide percent of average 185* 211
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .7 .4 175
HEWINTA 9500 .0 .2 0* 2.7 .6 450
HICKERSON PARK 9100 .1 .0 * 2.2 .5 440
HOLE-IN-ROCK 9150 .0 .0 100* 2.3 .4 575
INDIAN CREEK 9425 .9 .2 450* 1.1 .7 157
KELLEY R.S. 8180 .6 .1 600* 1.4 .6 233
STEEL CREEK PARK 10100 2.2 .6 367* -M .6 *
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Basin wide percent of average 336* 325
UPPER BEAR RIVER
BUG LAKE 7950 .1 .4 25* .8 .6 133
HAYDEN FORK 9100 .1 .3 33* 1.4 .6 233
KELLEY R.S. 8180 .6 .1 600* 1.4 .6 233
LILY LAKE 9050 -M .3 * -M .6 *
MONTE CRISTO 8960 .4 .5 80* 1.6 .7 229
SALT RIVER SUMMIT 7600 .3 .0 * 1.1 .5 220
TRIAL LAKE 9960 .1 .6 17* .9 .7 129
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Basin wide percent of average 68* 195
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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.