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 WEDNESDAY: OCTOBER 7 , 1998
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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 .0 .0 100* .4 .4 100
COTTONWOOD CREEK 7600 .0 .0 100* 1.8 .4 450
GRANITE CREEK 6770 .0 .0 100* .2 .4 50
GRASSY LAKE 7265 .0 .0 100* .0 .6 0
GROS VENTRE SUMMIT 8775 .3 .0 * .6 .3 200
LEWIS LAKE DIVIDE 7860 .0 .0 100* .1 .7 14
PHILLIPS BENCH 8200 .0 .0 100* .3 .5 60
SALT RIVER SUMMIT 7600 .1 .0 * 1.2 .3 400
SNAKE RIVER STATION 6920 .0 .0 100* .2 .4 50
SPRING CREEK DIVIDE 9000 .4 .0 * 1.2 .4 300
THUMB DIVIDE 7980 .1 .0 * .1 .4 25
TOGWOTEE PASS 9580 .6 .4 150* .8 .5 160
TWO OCEAN PLATEAU 9360 .6 .6 100* .8 .5 160
WILLOW CREEK 8450 .0 .0 100* 1.4 .5 280
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Basin wide percent of average 120* 144
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 1.0 0* .6 .4 150
BLACK BEAR 7950 .0 .7 0* .2 .7 29
CANYON 7940 .0 .1 0* .0 .3 0
FISHER CREEK 9100 .1 .6 17* .7 .6 117
MADISON PLATEAU 7750 .0 .3 0* .1 .5 20
NORTHEAST ENTRANCE 7350 .0 .0 100* .3 .3 100
PARKER PEAK 9400 .4 1.2 33* .8 .4 200
SYLVAN LAKE 8420 .0 .9 0* .8 .5 160
THUMB DIVIDE 7980 .1 .0 * .1 .4 25
TWO OCEAN PLATEAU 9360 .6 .6 100* .8 .5 160
WHISKEY CREEK 6800 .0 .1 0* .0 .4 0
WHITE MILL 8700 .0 .5 0* .4 .5 80
WOLVERINE 7650 .1 .0 * .7 .3 233
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Basin wide percent of average 18* 95
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .5 .3 167
COLD SPRINGS 9630 .5 .2 250* .9 .4 225
DEER PARK 9700 1.1 -M * -M -M *
HOBBS PARK 10100 2.2 .5 440* 2.4 .4 600
LITTLE WARM 9620 .5 .2 250* 1.0 .3 333
SOUTH PASS 9040 .8 .7 114* 1.4 .4 350
ST. LAWRENCE ALT 8620 .9 .1 900* 1.6 .3 533
TOGWOTEE PASS 9580 .6 .4 150* .8 .5 160
TOWNSEND CREEK 8700 1.4 .1 1400* 2.1 .4 525
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Basin wide percent of average 304* 357
BIGHORN BASIN
BALD MTN. 9375 1.2 .9 133* 1.3 .4 325
BEAR TRAP MEADOW 7900 .2 .1 200* .9 .3 300
BLACKWATER 9780 .6 1.0 60* 1.2 .5 240
BONE SPRINGS DIV 9350 .6 1.2 50* 1.2 .4 300
EVENING STAR 9200 .0 1.0 0* .4 .6 67
GRAVE SPRINGS 8550 1.0 -M * 1.2 .4 300
KIRWIN 9550 .5 .5 100* .8 .3 267
MARQUETTE 8760 .9 .4 225* 1.4 .3 467
MIDDLE POWDER 7760 .8 .4 200* 1.5 .4 375
OWL CREEK 8975 .6 .3 200* .8 .2 400
POWDER RIVER PASS 9480 .3 .3 100* .9 .4 225
SHELL CREEK 9580 1.0 1.0 100* .8 .4 200
SYLVAN LAKE 8420 .0 .9 0* .8 .5 160
SYLVAN ROAD 8120 .0 .4 0* .3 .4 75
TIMBER CREEK 7950 .5 .0 * .8 .3 267
YOUNTS PEAK 8350 .2 .6 33* .6 .4 150
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Basin wide percent of average 77* 240
SHOSHONE RIVER
BLACKWATER 9780 .6 1.0 60* 1.2 .5 240
EVENING STAR 9200 .0 1.0 0* .4 .6 67
KIRWIN 9550 .5 .5 100* .8 .3 267
MARQUETTE 8760 .9 .4 225* 1.4 .3 467
SYLVAN LAKE 8420 .0 .9 0* .8 .5 160
SYLVAN ROAD 8120 .0 .4 0* .3 .4 75
YOUNTS PEAK 8350 .2 .6 33* .6 .4 150
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Basin wide percent of average 46* 183
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .1 200* .9 .3 300
BONE SPRINGS DIV 9350 .6 1.2 50* 1.2 .4 300
BURGESS JUNCTION 7880 .4 .5 80* 1.0 .4 250
CLOUD PEAK RESERVOIR 9860 1.4 .4 350* 1.7 .4 425
DOME LAKE 8880 .5 .6 83* 1.1 .4 275
GRAVE SPRINGS 8550 1.0 -M * 1.2 .4 300
HANSEN SAWMILL 8760 .1 .2 50* .9 .3 300
MIDDLE POWDER 7760 .8 .4 200* 1.5 .4 375
POWDER RIVER PASS 9480 .3 .3 100* .9 .4 225
SUCKER CREEK 8880 1.1 .4 275* 1.0 .4 250
TIE CREEK 6870 .2 -M * .9 .4 225
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Basin wide percent of average 132* 293
BELLE FOURCHE
BLIND PARK 6890 .0 .4 0* -M .3 *
NORTH RAPID CREEK 6130 .0 -M * -M -M *
WARREN PEAK 6520 .0 .4 0* 3.2 .3 1067
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Basin wide percent of average 0* 1067*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .5 .2 250* 1.9 .5 380
DIVIDE PEAK 8800 -M .3 * -M .6 *
ELK RIVER 8700 .4 .0 * 3.3 .4 825
JOE WRIGHT 10120 1.8 .5 360* 3.3 .7 471
NORTH FRENCH CREEK 10100 2.6 .3 867* 3.5 .4 875
OLD BATTLE 10000 1.8 1.0 180* 3.3 .6 550
SOUTH BRUSH CREEK 8400 -M .0 * -M .4 *
TOWER 10500 2.0 .9 222* 3.3 .8 412
WEBBER SPRINGS 9200 .3 .2 150* 2.3 .6 383
WILLOW CREEK PASS 9540 .3 .1 300* 1.4 .3 467
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Basin wide percent of average 291* 519
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.2 .5 240* .0 .5 0
CASPER MTN. 7900 1.4 .2 700* 2.1 .5 420
DEADMAN HILL 10220 .8 .2 400* 1.6 .5 320
DEER PARK 9700 1.1 -M * -M -M *
LAPRELE CREEK 8320 .5 .0 * 2.5 .3 833
RENO HILL 8400 2.3 .3 767* 2.8 .5 560
ROACH 9700 .5 .2 250* 1.4 .5 280
SAND LAKE 10080 2.7 .4 675* 4.3 .5 860
SOUTH PASS 9040 .8 .7 114* 1.4 .4 350
WINDY PEAK 7840 .3 .0 * 2.5 .2 1250
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Basin wide percent of average 388* 477
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.1 .3 700
DIVIDE PEAK 8800 -M .3 * -M .6 *
OLD BATTLE 10000 1.8 1.0 180* 3.3 .6 550
SANDSTONE RS 8150 .0 .0 100* 3.1 .3 1033
WHISKEY PARK 8950 .7 .3 233* 3.3 .4 825
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Basin wide percent of average 192* 738
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.0 .0 * 1.4 .3 467
BLIND BULL SUM 8650 .2 .0 * .7 .4 175
EAST RIM DIVIDE 7930 .0 .0 100* .4 .3 133
ELKHART PARK G.S. 9400 .3 .0 * .6 .3 200
GROS VENTRE SUMMIT 8775 .3 .0 * .6 .3 200
KENDALL R.S. 7740 .0 .0 100* .4 .3 133
LOOMIS PARK 8240 .1 .0 * .6 .3 200
NEW FORK LAKE 8340 .0 .0 100* .4 .3 133
SNIDER BASIN 8250 .2 .0 * .7 .3 233
SPRING CREEK DIVIDE 9000 .4 .0 * 1.2 .4 300
TRIPLE PEAK 8500 .1 .0 * 1.0 .5 200
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Basin wide percent of average * 216
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .3 433
HEWINTA 9500 .0 .0 100* .9 .5 180
HICKERSON PARK 9150 .5 .0 * .5 .4 125
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .4 275
INDIAN CREEK 9425 1.0 .0 * 1.5 .4 375
KELLEY R.S. 8180 .4 .0 * 1.1 .3 367
STEEL CREEK PARK 10100 .7 .6 117* 1.3 .5 260
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Basin wide percent of average 117* 275
UPPER BEAR RIVER
BUG LAKE 7950 .5 .4 125* 1.5 .6 250
HAYDEN FORK 9400 .1 .2 50* 1.0 .5 200
KELLEY R.S. 8180 .4 .0 * 1.1 .3 367
LILY LAKE 9050 .7 .3 233* 1.4 .5 280
MONTE CRISTO 8960 .0 .5 0* 1.6 .7 229
SALT RIVER SUMMIT 7600 .1 .0 * 1.2 .3 400
TRIAL LAKE 9960 .1 .5 20* .9 .6 150
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Basin wide percent of average 74* 249
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-M = Missing data
* = Data may not provide a valid measure of conditions.
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 1961-90.
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.