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 6 , 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* .3 .3 100
COTTONWOOD CREEK 7600 .2 .0 * 1.8 .4 450
GRANITE CREEK 6770 .0 .0 100* .2 .4 50
GRASSY LAKE 7265 .0 .0 100* .2 .5 40
GROS VENTRE SUMMIT 8775 .3 .0 * .5 .3 167
LEWIS LAKE DIVIDE 7860 .0 .0 100* .1 .5 20
PHILLIPS BENCH 8200 .0 .0 100* .3 .4 75
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .3 367
SNAKE RIVER STATION 6920 .0 .0 100* .2 .4 50
SPRING CREEK DIVIDE 9000 .4 .0 * 1.2 .3 400
THUMB DIVIDE 7980 .1 .0 * .0 .3 0
TOGWOTEE PASS 9580 .6 .4 150* .7 .4 175
TWO OCEAN PLATEAU 9360 .6 .5 120* .8 .5 160
WILLOW CREEK 8450 .0 .0 100* 1.4 .5 280
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Basin wide percent of average 133* 160
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .1 .9 11* .5 .3 167
BLACK BEAR 7950 .0 .7 0* .2 .6 33
CANYON 7940 .0 .1 0* .0 .3 0
FISHER CREEK 9100 .2 .6 33* .7 .5 140
MADISON PLATEAU 7750 .0 .3 0* .1 .4 25
NORTHEAST ENTRANCE 7350 .0 .0 100* .3 .2 150
PARKER PEAK 9400 .4 1.1 36* .8 .4 200
SYLVAN LAKE 8420 .0 .8 0* .8 .4 200
THUMB DIVIDE 7980 .1 .0 * .0 .3 0
TWO OCEAN PLATEAU 9360 .6 .5 120* .8 .5 160
WHISKEY CREEK 6800 .0 .1 0* .0 .4 0
WHITE MILL 8700 .1 .5 20* .4 .4 100
WOLVERINE 7650 .1 .0 * .8 .3 267
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Basin wide percent of average 25* 108
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .5 .3 167
COLD SPRINGS 9630 .6 .2 300* .9 .3 300
DEER PARK 9700 1.2 -M * -M -M *
HOBBS PARK 10100 2.2 .5 440* 2.4 .3 800
LITTLE WARM 9620 .5 .2 250* 1.0 .3 333
SOUTH PASS 9040 .8 .6 133* 1.3 .4 325
ST. LAWRENCE ALT 8620 1.0 .1 1000* 1.6 .3 533
TOGWOTEE PASS 9580 .6 .4 150* .7 .4 175
TOWNSEND CREEK 8700 1.4 .1 1400* 2.0 .3 667
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Basin wide percent of average 326* 400
BIGHORN BASIN
BALD MTN. 9375 1.2 .9 133* 1.3 .4 325
BEAR TRAP MEADOW 7900 .4 .1 400* .9 .3 300
BLACKWATER 9780 .5 .9 56* 1.1 .4 275
BONE SPRINGS DIV 9350 .6 1.1 55* 1.1 .4 275
EVENING STAR 9200 .1 .9 11* .4 .5 80
GRAVE SPRINGS 8550 1.0 -M * 1.2 .3 400
KIRWIN 9550 .4 .4 100* .7 .3 233
MARQUETTE 8760 .9 .4 225* 1.3 .3 433
MIDDLE POWDER 7760 .9 .4 225* 1.4 .3 467
OWL CREEK 8975 .4 .3 133* .6 .2 300
POWDER RIVER PASS 9480 .4 .3 133* .9 .3 300
SHELL CREEK 9580 1.0 1.0 100* .7 .3 233
SYLVAN LAKE 8420 .0 .8 0* .8 .4 200
SYLVAN ROAD 8120 .0 .4 0* .3 .4 75
TIMBER CREEK 7950 .5 .0 * .8 .2 400
YOUNTS PEAK 8350 .2 .6 33* .6 .3 200
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Basin wide percent of average 82* 266
SHOSHONE RIVER
BLACKWATER 9780 .5 .9 56* 1.1 .4 275
EVENING STAR 9200 .1 .9 11* .4 .5 80
KIRWIN 9550 .4 .4 100* .7 .3 233
MARQUETTE 8760 .9 .4 225* 1.3 .3 433
SYLVAN LAKE 8420 .0 .8 0* .8 .4 200
SYLVAN ROAD 8120 .0 .4 0* .3 .4 75
YOUNTS PEAK 8350 .2 .6 33* .6 .3 200
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Basin wide percent of average 48* 200
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .4 .1 400* .9 .3 300
BONE SPRINGS DIV 9350 .6 1.1 55* 1.1 .4 275
BURGESS JUNCTION 7880 .5 .4 125* .9 .3 300
CLOUD PEAK RESERVOIR 9860 1.5 .3 500* 1.7 .3 567
DOME LAKE 8880 .6 .5 120* 1.1 .4 275
GRAVE SPRINGS 8550 1.0 -M * 1.2 .3 400
HANSEN SAWMILL 8760 .1 .2 50* .9 .3 300
MIDDLE POWDER 7760 .9 .4 225* 1.4 .3 467
POWDER RIVER PASS 9480 .4 .3 133* .9 .3 300
SUCKER CREEK 8880 1.1 .3 367* .9 .4 225
TIE CREEK 6870 .5 -M * .9 .3 300
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Basin wide percent of average 169* 331
BELLE FOURCHE
BLIND PARK 6890 .0 .4 0* -M .3 *
NORTH RAPID CREEK 6130 .0 -M * -M -M *
WARREN PEAK 6520 .0 .4 0* 3.0 .2 1500
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Basin wide percent of average 0* 1500*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .7 .2 350* 1.7 .4 425
DIVIDE PEAK 8800 -M .2 * -M .5 *
ELK RIVER 8700 .6 .0 * 3.2 .4 800
JOE WRIGHT 10120 1.9 .4 475* 3.2 .6 533
NORTH FRENCH CREEK 10100 2.7 .2 1350* 3.5 .4 875
OLD BATTLE 10000 1.9 .9 211* 3.1 .5 620
SOUTH BRUSH CREEK 8400 -M .0 * -M .4 *
TOWER 10500 2.1 .8 262* 3.3 .6 550
WEBBER SPRINGS 9200 .4 .2 200* 2.3 .5 460
WILLOW CREEK PASS 9540 .3 .1 300* 1.0 .3 333
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Basin wide percent of average 357* 576
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.2 .5 240* .0 .4 0
CASPER MTN. 7900 1.5 .1 1500* 2.1 .4 525
DEADMAN HILL 10220 .7 .1 700* 1.6 .4 400
DEER PARK 9700 1.2 -M * -M -M *
LAPRELE CREEK 8320 .7 .0 * 2.4 .2 1200
RENO HILL 8400 2.4 .2 1200* 2.6 .4 650
ROACH 9700 .5 .1 500* 1.4 .4 350
SAND LAKE 10080 -M .3 * 4.2 .4 1050
SOUTH PASS 9040 .8 .6 133* 1.3 .4 325
WINDY PEAK 7840 .4 .0 * 2.4 .2 1200
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Basin wide percent of average 444* 562
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.0 .3 667
DIVIDE PEAK 8800 -M .2 * -M .5 *
OLD BATTLE 10000 1.9 .9 211* 3.1 .5 620
SANDSTONE RS 8150 .0 .0 100* 3.1 .3 1033
WHISKEY PARK 8950 .8 .2 400* 3.2 .3 1067
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Basin wide percent of average 245* 814
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.0 .0 * 1.3 .3 433
BLIND BULL SUM 8650 .2 .0 * .7 .3 233
EAST RIM DIVIDE 7930 .0 .0 100* .3 .2 150
ELKHART PARK G.S. 9400 .3 .0 * .5 .3 167
GROS VENTRE SUMMIT 8775 .3 .0 * .5 .3 167
KENDALL R.S. 7740 .1 .0 * .4 .2 200
LOOMIS PARK 8240 .1 .0 * .6 .3 200
NEW FORK LAKE 8340 .0 .0 100* .1 .2 50
SNIDER BASIN 8250 .4 .0 * .7 .2 350
SPRING CREEK DIVIDE 9000 .4 .0 * 1.2 .3 400
TRIPLE PEAK 8500 .1 .0 * 1.0 .5 200
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Basin wide percent of average * 235
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .2 650
HEWINTA 9500 -M .0 * 1.0 .4 250
HICKERSON PARK 9150 .3 .0 * .5 .3 167
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .3 367
INDIAN CREEK 9425 1.0 .0 * 1.3 .4 325
KELLEY R.S. 8180 .4 .0 * 1.1 .3 367
STEEL CREEK PARK 10100 .6 .5 120* 1.2 .4 300
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Basin wide percent of average 120* 326
UPPER BEAR RIVER
BUG LAKE 7950 .6 .3 200* 1.5 .5 300
HAYDEN FORK 9400 .0 .2 0* 1.0 .4 250
KELLEY R.S. 8180 .4 .0 * 1.1 .3 367
LILY LAKE 9050 .8 .3 267* 1.4 .4 350
MONTE CRISTO 8960 .3 .4 75* 1.6 .6 267
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .3 367
TRIAL LAKE 9960 .5 .4 125* 1.0 .5 200
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Basin wide percent of average 138* 290
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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.