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 THURSDAY: OCTOBER 8 , 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 .5 80
COTTONWOOD CREEK 7600 .0 .0 100* 1.8 .5 360
GRANITE CREEK 6770 .0 .0 100* .2 .5 40
GRASSY LAKE 7265 .0 .0 100* .0 .7 0
GROS VENTRE SUMMIT 8775 .4 .0 * .5 .4 125
LEWIS LAKE DIVIDE 7860 .0 .0 100* .1 .8 12
PHILLIPS BENCH 8200 .0 .0 100* .4 .6 67
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .4 300
SNAKE RIVER STATION 6920 -M .0 * -M .5 *
SPRING CREEK DIVIDE 9000 .4 .0 * 1.2 .5 240
THUMB DIVIDE 7980 .1 .0 * .1 .4 25
TOGWOTEE PASS 9580 .6 .5 120* .8 .6 133
TWO OCEAN PLATEAU 9360 .3 .7 43* .9 .6 150
WILLOW CREEK 8450 .0 .0 100* 1.4 .6 233
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Basin wide percent of average 75* 127
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .1 1.1 9* .7 .4 175
BLACK BEAR 7950 .0 .8 0* .2 .8 25
CANYON 7940 .0 .2 0* .1 .4 25
FISHER CREEK 9100 .1 .7 14* .8 .7 114
MADISON PLATEAU 7750 .0 .4 0* .2 .6 33
NORTHEAST ENTRANCE 7350 .1 .0 * .4 .3 133
PARKER PEAK 9400 .1 1.2 8* .7 .5 140
SYLVAN LAKE 8420 .0 .9 0* .8 .6 133
THUMB DIVIDE 7980 .1 .0 * .1 .4 25
TWO OCEAN PLATEAU 9360 .3 .7 43* .9 .6 150
WHISKEY CREEK 6800 .0 .1 0* .0 .5 0
WHITE MILL 8700 .1 .6 17* .6 .6 100
WOLVERINE 7650 .1 .1 100* .6 .4 150
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Basin wide percent of average 12* 90
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .5 .4 125
COLD SPRINGS 9630 .2 .2 100* .8 .4 200
DEER PARK 9700 1.0 -M * 1.6 -M *
HOBBS PARK 10100 2.2 .6 367* 2.4 .5 480
LITTLE WARM 9620 .5 .3 167* 1.0 .4 250
SOUTH PASS 9040 .9 .8 112* 1.4 .5 280
ST. LAWRENCE ALT 8620 .7 .2 350* 1.6 .4 400
TOGWOTEE PASS 9580 .6 .5 120* .8 .6 133
TOWNSEND CREEK 8700 1.4 .2 700* 2.2 .4 550
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Basin wide percent of average 230* 297
BIGHORN BASIN
BALD MTN. 9375 1.2 1.0 120* 1.4 .5 280
BEAR TRAP MEADOW 7900 .1 .2 50* 1.1 .4 275
BLACKWATER 9780 .7 1.0 70* 1.2 .5 240
BONE SPRINGS DIV 9350 .6 1.2 50* 1.3 .5 260
EVENING STAR 9200 .1 1.1 9* .4 .7 57
GRAVE SPRINGS 8550 .8 -M * 1.3 .4 325
KIRWIN 9550 .5 .5 100* .8 .4 200
MARQUETTE 8760 .9 .4 225* 1.5 .4 375
MIDDLE POWDER 7760 .7 .5 140* 1.5 .5 300
OWL CREEK 8975 .5 .4 125* .9 .2 450
POWDER RIVER PASS 9480 .1 .4 25* .9 .4 225
SHELL CREEK 9580 1.0 1.1 91* .8 .4 200
SYLVAN LAKE 8420 .0 .9 0* .8 .6 133
SYLVAN ROAD 8120 .0 .5 0* .3 .5 60
TIMBER CREEK 7950 .4 .1 400* 1.3 .3 433
YOUNTS PEAK 8350 .2 .7 29* .6 .4 150
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Basin wide percent of average 70* 227
SHOSHONE RIVER
BLACKWATER 9780 .7 1.0 70* 1.2 .5 240
EVENING STAR 9200 .1 1.1 9* .4 .7 57
KIRWIN 9550 .5 .5 100* .8 .4 200
MARQUETTE 8760 .9 .4 225* 1.5 .4 375
SYLVAN LAKE 8420 .0 .9 0* .8 .6 133
SYLVAN ROAD 8120 .0 .5 0* .3 .5 60
YOUNTS PEAK 8350 .2 .7 29* .6 .4 150
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Basin wide percent of average 47* 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .2 50* 1.1 .4 275
BONE SPRINGS DIV 9350 .6 1.2 50* 1.3 .5 260
BURGESS JUNCTION 7880 .2 .5 40* 1.0 .5 200
CLOUD PEAK RESERVOIR 9860 1.1 .4 275* 1.8 .5 360
DOME LAKE 8880 .5 .6 83* 1.0 .5 200
GRAVE SPRINGS 8550 .8 -M * 1.3 .4 325
HANSEN SAWMILL 8760 .1 .2 50* .9 .4 225
MIDDLE POWDER 7760 .7 .5 140* 1.5 .5 300
POWDER RIVER PASS 9480 .1 .4 25* .9 .4 225
SUCKER CREEK 8880 .9 .4 225* 1.2 .5 240
TIE CREEK 6870 .1 -M * .9 .4 225
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Basin wide percent of average 98* 258
BELLE FOURCHE
BLIND PARK 6890 .0 .5 0* 3.0 .4 750
NORTH RAPID CREEK 6130 .0 -M * 3.9 -M *
WARREN PEAK 6520 .0 .5 0* 3.3 .3 1100
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Basin wide percent of average 0* 900
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .3 67* 2.0 .6 333
DIVIDE PEAK 8800 -M .3 * -M .7 *
ELK RIVER 8700 .0 .0 100* 3.5 .5 700
JOE WRIGHT 10120 1.8 .6 300* 3.4 .8 425
NORTH FRENCH CREEK 10100 2.5 .3 833* 3.5 .5 700
OLD BATTLE 10000 1.8 1.1 164* 3.4 .7 486
SOUTH BRUSH CREEK 8400 -M .1 * -M .5 *
TOWER 10500 1.8 1.1 164* 3.3 .9 367
WEBBER SPRINGS 9200 .1 .3 33* 2.4 .7 343
WILLOW CREEK PASS 9540 .3 .1 300* 1.6 .4 400
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Basin wide percent of average 224* 453
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.2 .6 200* .0 .5 0
CASPER MTN. 7900 1.3 .2 650* 2.2 .6 367
DEADMAN HILL 10220 1.0 .2 500* 1.7 .5 340
DEER PARK 9700 1.0 -M * 1.6 -M *
LAPRELE CREEK 8320 .2 .1 200* 2.5 .3 833
RENO HILL 8400 2.1 .3 700* 2.9 .6 483
ROACH 9700 .3 .2 150* 1.4 .6 233
SAND LAKE 10080 2.8 .5 560* 4.3 .6 717
SOUTH PASS 9040 .9 .8 112* 1.4 .5 280
WINDY PEAK 7840 .1 .0 * 2.9 .3 967
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Basin wide percent of average 338* 429
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.1 .4 525
DIVIDE PEAK 8800 -M .3 * -M .7 *
OLD BATTLE 10000 1.8 1.1 164* 3.4 .7 486
SANDSTONE RS 8150 .0 .0 100* 3.1 .4 775
WHISKEY PARK 8950 .6 .3 200* 3.4 .4 850
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Basin wide percent of average 171* 632
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .0 * 1.4 .4 350
BLIND BULL SUM 8650 .1 .0 * .7 .5 140
EAST RIM DIVIDE 7930 .0 .0 100* .4 .3 133
ELKHART PARK G.S. 9400 .1 .0 * .6 .4 150
GROS VENTRE SUMMIT 8775 .4 .0 * .5 .4 125
KENDALL R.S. 7740 .1 .0 * .4 .3 133
LOOMIS PARK 8240 .1 .0 * .6 .4 150
NEW FORK LAKE 8340 .0 .0 100* .5 .3 167
SNIDER BASIN 8250 .1 .0 * .7 .3 233
SPRING CREEK DIVIDE 9000 .4 .0 * 1.2 .5 240
TRIPLE PEAK 8500 .1 .0 * 1.1 .6 183
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Basin wide percent of average * 184
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.2 .3 400
HEWINTA 9500 .0 .1 0* 1.0 .5 200
HICKERSON PARK 9150 .4 .0 * .5 .5 100
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .5 220
INDIAN CREEK 9425 1.0 .0 * 1.6 .5 320
KELLEY R.S. 8180 .3 .0 * 1.2 .4 300
STEEL CREEK PARK 10100 .7 .6 117* 1.4 .5 280
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Basin wide percent of average 100* 250
UPPER BEAR RIVER
BUG LAKE 7950 .2 .4 50* 1.5 .7 214
HAYDEN FORK 9400 .1 .2 50* 1.0 .6 167
KELLEY R.S. 8180 .3 .0 * 1.2 .4 300
LILY LAKE 9050 .2 .3 67* 1.3 .6 217
MONTE CRISTO 8960 .1 .5 20* 1.6 .8 200
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .4 300
TRIAL LAKE 9960 .1 .5 20* .9 .7 129
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Basin wide percent of average 37* 207
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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.