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 5 , 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* .2 .3 67
COTTONWOOD CREEK 7600 .2 .0 * 1.8 .3 600
GRANITE CREEK 6770 .0 .0 100* .2 .3 67
GRASSY LAKE 7265 .0 .0 100* .1 .4 25
GROS VENTRE SUMMIT 8775 .3 .0 * .5 .2 250
LEWIS LAKE DIVIDE 7860 .0 .0 100* .0 .4 0
PHILLIPS BENCH 8200 .0 .0 100* .3 .3 100
SALT RIVER SUMMIT 7600 .2 .0 * 1.1 .2 550
SNAKE RIVER STATION 6920 .0 .0 100* .2 .3 67
SPRING CREEK DIVIDE 9000 .3 .0 * 1.2 .3 400
THUMB DIVIDE 7980 .1 .0 * .0 .2 0
TOGWOTEE PASS 9580 .5 .3 167* .6 .3 200
TWO OCEAN PLATEAU 9360 .6 .4 150* .8 .4 200
WILLOW CREEK 8450 .1 .0 * 1.4 .4 350
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Basin wide percent of average 157* 195
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .9 0* .3 .2 150
BLACK BEAR 7950 .0 .6 0* .2 .5 40
CANYON 7940 .0 .1 0* .0 .2 0
FISHER CREEK 9100 .2 .5 40* .5 .4 125
MADISON PLATEAU 7750 .0 .3 0* .1 .3 33
NORTHEAST ENTRANCE 7350 .0 .0 100* .3 .2 150
PARKER PEAK 9400 .2 1.1 18* 1.1 .3 367
SYLVAN LAKE 8420 .1 .8 12* .9 .3 300
THUMB DIVIDE 7980 .1 .0 * .0 .2 0
TWO OCEAN PLATEAU 9360 .6 .4 150* .8 .4 200
WHISKEY CREEK 6800 .1 .1 100* .0 .3 0
WHITE MILL 8700 -M .4 * -M .3 *
WOLVERINE 7650 .2 .0 * .9 .2 450
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Basin wide percent of average 25* 146
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .5 .2 250
COLD SPRINGS 9630 .6 .2 300* .9 .2 450
DEER PARK 9700 1.2 -M * -M -M *
HOBBS PARK 10100 2.2 .4 550* 2.3 .3 767
LITTLE WARM 9620 .5 .2 250* .8 .2 400
SOUTH PASS 9040 .9 .5 180* 1.3 .3 433
ST. LAWRENCE ALT 8620 1.1 .1 1100* 1.6 .2 800
TOGWOTEE PASS 9580 .5 .3 167* .6 .3 200
TOWNSEND CREEK 8700 1.6 .1 1600* 2.1 .2 1050
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Basin wide percent of average 390* 532
BIGHORN BASIN
BALD MTN. 9375 1.2 .8 150* 1.2 .3 400
BEAR TRAP MEADOW 7900 .5 .1 500* .9 .2 450
BLACKWATER 9780 .3 .9 33* 1.1 .3 367
BONE SPRINGS DIV 9350 .7 1.1 64* 1.0 .3 333
EVENING STAR 9200 .0 .8 0* .3 .4 75
GRAVE SPRINGS 8550 -M -M * 1.1 .2 550
KIRWIN 9550 .4 .4 100* .7 .2 350
MARQUETTE 8760 .8 .4 200* 1.0 .2 500
MIDDLE POWDER 7760 1.0 .4 250* 1.4 .3 467
OWL CREEK 8975 .5 .3 167* .6 .1 600
POWDER RIVER PASS 9480 .3 .3 100* .8 .2 400
SHELL CREEK 9580 .7 .9 78* .7 .2 350
SYLVAN LAKE 8420 .1 .8 12* .9 .3 300
SYLVAN ROAD 8120 .0 .4 0* .3 .3 100
TIMBER CREEK 7950 .6 .0 * .8 .2 400
YOUNTS PEAK 8350 .2 .5 40* .5 .2 250
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Basin wide percent of average 83* 341
SHOSHONE RIVER
BLACKWATER 9780 .3 .9 33* 1.1 .3 367
EVENING STAR 9200 .0 .8 0* .3 .4 75
KIRWIN 9550 .4 .4 100* .7 .2 350
MARQUETTE 8760 .8 .4 200* 1.0 .2 500
SYLVAN LAKE 8420 .1 .8 12* .9 .3 300
SYLVAN ROAD 8120 .0 .4 0* .3 .3 100
YOUNTS PEAK 8350 .2 .5 40* .5 .2 250
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Basin wide percent of average 43* 253
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .5 .1 500* .9 .2 450
BONE SPRINGS DIV 9350 .7 1.1 64* 1.0 .3 333
BURGESS JUNCTION 7880 .5 .4 125* .9 .3 300
CLOUD PEAK RESERVOIR 9860 1.1 .3 367* .9 .3 300
DOME LAKE 8880 .7 .5 140* 1.1 .3 367
GRAVE SPRINGS 8550 -M -M * 1.1 .2 550
HANSEN SAWMILL 8760 .1 .2 50* .7 .2 350
MIDDLE POWDER 7760 1.0 .4 250* 1.4 .3 467
POWDER RIVER PASS 9480 .3 .3 100* .8 .2 400
SUCKER CREEK 8880 1.1 .3 367* .7 .3 233
TIE CREEK 6870 .6 -M * .9 .2 450
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Basin wide percent of average 167* 371
BELLE FOURCHE
BLIND PARK 6890 .0 .3 0* 1.4 .2 700
NORTH RAPID CREEK 6130 .0 -M * 1.9 -M *
WARREN PEAK 6520 .0 .3 0* 1.7 .2 850
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Basin wide percent of average 0* 775
UPPER N. PLATTE RIVER
COLUMBINE 9400 -M .1 * 1.6 .3 533
DIVIDE PEAK 8800 -M .2 * -M .4 *
ELK RIVER 8700 .7 .0 * 3.3 .3 1100
JOE WRIGHT 10120 1.1 .3 367* 2.4 .5 480
NORTH FRENCH CREEK 10100 2.2 .2 1100* 3.0 .3 1000
OLD BATTLE 10000 1.9 .8 238* 3.0 .4 750
SOUTH BRUSH CREEK 8400 -M .0 * -M .3 *
TOWER 10500 -M .6 * 2.8 .5 560
WEBBER SPRINGS 9200 .4 .1 400* 2.1 .4 525
WILLOW CREEK PASS 9540 .1 .1 100* .9 .2 450
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Basin wide percent of average 380* 659
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .6 .4 150* .0 .3 0
CASPER MTN. 7900 1.5 .1 1500* 1.9 .3 633
DEADMAN HILL 10220 .6 .1 600* 1.4 .3 467
DEER PARK 9700 1.2 -M * -M -M *
LAPRELE CREEK 8320 -M .0 * 2.0 .2 1000
RENO HILL 8400 -M .2 * 2.3 .3 767
ROACH 9700 .5 .1 500* 1.3 .3 433
SAND LAKE 10080 -M .3 * -M .3 *
SOUTH PASS 9040 .9 .5 180* 1.3 .3 433
WINDY PEAK 7840 .4 .0 * 2.1 .2 1050
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Basin wide percent of average 342* 559
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.9 .2 950
DIVIDE PEAK 8800 -M .2 * -M .4 *
OLD BATTLE 10000 1.9 .8 238* 3.0 .4 750
SANDSTONE RS 8150 .1 .0 * 3.0 .2 1500
WHISKEY PARK 8950 -M .2 * 3.1 .2 1550
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Basin wide percent of average 238* 1100
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.0 .0 * 1.3 .2 650
BLIND BULL SUM 8650 .1 .0 * .7 .3 233
EAST RIM DIVIDE 7930 .0 .0 100* .4 .2 200
ELKHART PARK G.S. 9400 .2 .0 * .6 .2 300
GROS VENTRE SUMMIT 8775 .3 .0 * .5 .2 250
KENDALL R.S. 7740 .0 .0 100* .4 .2 200
LOOMIS PARK 8240 .1 .0 * .6 .2 300
NEW FORK LAKE 8340 .0 .0 100* .0 .2 0
SNIDER BASIN 8250 .4 .0 * .7 .2 350
SPRING CREEK DIVIDE 9000 .3 .0 * 1.2 .3 400
TRIPLE PEAK 8500 .1 .0 * .9 .4 225
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Basin wide percent of average * 281
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 1.3 .2 650
HEWINTA 9500 .1 .0 * .9 .3 300
HICKERSON PARK 9150 .1 .0 * .5 .3 167
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .3 367
INDIAN CREEK 9425 .9 .0 * 1.1 .3 367
KELLEY R.S. 8180 .5 .0 * 1.0 .2 500
STEEL CREEK PARK 10100 .7 .5 140* 1.1 .3 367
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Basin wide percent of average 140* 368
UPPER BEAR RIVER
BUG LAKE 7950 .6 .3 200* -M .4 *
HAYDEN FORK 9400 .0 .2 0* 1.0 .3 333
KELLEY R.S. 8180 .5 .0 * 1.0 .2 500
LILY LAKE 9050 1.2 .3 400* 1.4 .3 467
MONTE CRISTO 8960 .5 .4 125* 1.6 .5 320
SALT RIVER SUMMIT 7600 .2 .0 * 1.1 .2 550
TRIAL LAKE 9960 .6 .4 150* 1.0 .4 250
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Basin wide percent of average 181* 374
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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.