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 SATURDAY: OCTOBER 10 , 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 .6 67
COTTONWOOD CREEK 7600 .0 .0 100* 1.8 .6 300
GRANITE CREEK 6770 .0 .0 100* .2 .7 29
GRASSY LAKE 7265 .0 .0 100* .0 1.0 0
GROS VENTRE SUMMIT 8775 .5 .0 * .6 .5 120
LEWIS LAKE DIVIDE 7860 .0 .0 100* .1 1.0 10
PHILLIPS BENCH 8200 .0 .0 100* .3 .8 38
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .5 240
SNAKE RIVER STATION 6920 .0 .0 100* .2 .7 29
SPRING CREEK DIVIDE 9000 .5 .0 * 1.2 .6 200
THUMB DIVIDE 7980 .1 .0 * .1 .6 17
TOGWOTEE PASS 9580 .6 .6 100* .7 .7 100
TWO OCEAN PLATEAU 9360 .3 .8 38* .9 .8 112
WILLOW CREEK 8450 .0 .0 100* 1.4 .8 175
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Basin wide percent of average 64* 92
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .3 1.2 25* .5 .6 83
BLACK BEAR 7950 .0 .9 0* .2 1.0 20
CANYON 7940 .0 .2 0* .1 .5 20
FISHER CREEK 9100 .1 .7 14* .7 .9 78
MADISON PLATEAU 7750 .0 .4 0* .1 .7 14
NORTHEAST ENTRANCE 7350 .0 .0 100* .3 .4 75
PARKER PEAK 9400 .0 1.4 0* .8 .6 133
SYLVAN LAKE 8420 .0 1.0 0* .8 .8 100
THUMB DIVIDE 7980 .1 .0 * .1 .6 17
TWO OCEAN PLATEAU 9360 .3 .8 38* .9 .8 112
WHISKEY CREEK 6800 .0 .1 0* .0 .6 0
WHITE MILL 8700 .0 .6 0* .4 .8 50
WOLVERINE 7650 .0 .1 0* .8 .5 160
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Basin wide percent of average 9* 65
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .5 .5 100
COLD SPRINGS 9630 .0 .2 0* .9 .6 150
DEER PARK 9700 .9 -M * 1.7 -M *
HOBBS PARK 10100 2.0 .6 333* 2.4 .6 400
LITTLE WARM 9620 .0 .3 0* .9 .5 180
SOUTH PASS 9040 .5 .9 56* 1.4 .6 233
ST. LAWRENCE ALT 8620 .4 .2 200* 1.6 .5 320
TOGWOTEE PASS 9580 .6 .6 100* .7 .7 100
TOWNSEND CREEK 8700 1.1 .2 550* 2.1 .6 350
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Basin wide percent of average 156* 228
BIGHORN BASIN
BALD MTN. 9375 1.2 1.1 109* 1.3 .7 186
BEAR TRAP MEADOW 7900 .1 .2 50* 1.0 .5 200
BLACKWATER 9780 .7 1.1 64* 1.2 .7 171
BONE SPRINGS DIV 9350 .6 1.4 43* 1.2 .6 200
EVENING STAR 9200 .0 1.3 0* .4 .8 50
GRAVE SPRINGS 8550 .4 -M * 1.3 .6 217
KIRWIN 9550 .5 .6 83* .8 .5 160
MARQUETTE 8760 .8 .4 200* 1.3 .5 260
MIDDLE POWDER 7760 .1 .5 20* 1.5 .6 250
OWL CREEK 8975 .5 .4 125* .8 .3 267
POWDER RIVER PASS 9480 .1 .4 25* .9 .6 150
SHELL CREEK 9580 1.0 1.2 83* .8 .6 133
SYLVAN LAKE 8420 .0 1.0 0* .8 .8 100
SYLVAN ROAD 8120 .0 .5 0* .3 .6 50
TIMBER CREEK 7950 .2 .1 200* 1.3 .4 325
YOUNTS PEAK 8350 .2 .8 25* .6 .6 100
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Basin wide percent of average 55* 165
SHOSHONE RIVER
BLACKWATER 9780 .7 1.1 64* 1.2 .7 171
EVENING STAR 9200 .0 1.3 0* .4 .8 50
KIRWIN 9550 .5 .6 83* .8 .5 160
MARQUETTE 8760 .8 .4 200* 1.3 .5 260
SYLVAN LAKE 8420 .0 1.0 0* .8 .8 100
SYLVAN ROAD 8120 .0 .5 0* .3 .6 50
YOUNTS PEAK 8350 .2 .8 25* .6 .6 100
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Basin wide percent of average 39* 120
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .2 50* 1.0 .5 200
BONE SPRINGS DIV 9350 .6 1.4 43* 1.2 .6 200
BURGESS JUNCTION 7880 .0 .6 0* 1.0 .6 167
CLOUD PEAK RESERVOIR 9860 .8 .5 160* 2.0 .6 333
DOME LAKE 8880 .4 .7 57* 1.1 .7 157
GRAVE SPRINGS 8550 .4 -M * 1.3 .6 217
HANSEN SAWMILL 8760 .1 .2 50* .9 .5 180
MIDDLE POWDER 7760 .1 .5 20* 1.5 .6 250
POWDER RIVER PASS 9480 .1 .4 25* .9 .6 150
SUCKER CREEK 8880 .2 .5 40* 1.0 .6 167
TIE CREEK 6870 .1 -M * .6 .6 100
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Basin wide percent of average 48* 192
BELLE FOURCHE
BLIND PARK 6890 .0 .6 0* 3.0 .5 600
NORTH RAPID CREEK 6130 .0 -M * 3.8 -M *
WARREN PEAK 6520 .0 .6 0* 3.2 .4 800
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Basin wide percent of average 0* 689
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .3 0* 2.0 .7 286
DIVIDE PEAK 8800 -M .4 * -M .9 *
ELK RIVER 8700 .0 .0 100* 3.7 .7 529
JOE WRIGHT 10120 1.3 .7 186* 3.4 1.0 340
NORTH FRENCH CREEK 10100 2.2 .4 550* 3.5 .7 500
OLD BATTLE 10000 1.7 1.3 131* 3.4 .9 378
SOUTH BRUSH CREEK 8400 1.6 .1 1600* -M .7 *
TOWER 10500 1.4 1.4 100* 3.3 1.2 275
WEBBER SPRINGS 9200 .0 .3 0* 2.4 .9 267
WILLOW CREEK PASS 9540 .3 .1 300* 1.7 .5 340
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Basin wide percent of average 185* 355
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .5 .7 71* .0 .7 0
CASPER MTN. 7900 .8 .3 267* 2.2 .7 314
DEADMAN HILL 10220 .8 .3 267* 1.7 .7 243
DEER PARK 9700 .9 -M * 1.7 -M *
LAPRELE CREEK 8320 .0 .1 0* 2.5 .4 625
RENO HILL 8400 1.9 .4 475* 2.9 .7 414
ROACH 9700 .0 .3 0* 1.4 .8 175
SAND LAKE 10080 2.6 .6 433* 4.3 .8 538
SOUTH PASS 9040 .5 .9 56* 1.4 .6 233
WINDY PEAK 7840 .0 .0 100* 2.7 .3 900
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Basin wide percent of average 197* 335
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.2 .5 440
DIVIDE PEAK 8800 -M .4 * -M .9 *
OLD BATTLE 10000 1.7 1.3 131* 3.4 .9 378
SANDSTONE RS 8150 .0 .0 100* 3.1 .5 620
WHISKEY PARK 8950 .4 .4 100* 3.4 .6 567
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Basin wide percent of average 124* 484
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .0 * 1.4 .5 280
BLIND BULL SUM 8650 .1 .0 * .7 .6 117
EAST RIM DIVIDE 7930 .0 .0 100* .4 .4 100
ELKHART PARK G.S. 9400 .0 .0 100* .6 .5 120
GROS VENTRE SUMMIT 8775 .5 .0 * .6 .5 120
KENDALL R.S. 7740 .0 .0 100* .4 .4 100
LOOMIS PARK 8240 .1 .0 * .6 .5 120
NEW FORK LAKE 8340 .0 .0 100* .2 .4 50
SNIDER BASIN 8250 .0 .0 100* .7 .4 175
SPRING CREEK DIVIDE 9000 .5 .0 * 1.2 .6 200
TRIPLE PEAK 8500 .0 .0 100* 1.0 .8 125
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Basin wide percent of average * 139
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .4 325
HEWINTA 9500 .0 .1 0* 1.0 .7 143
HICKERSON PARK 9150 .4 .0 * .6 .6 100
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .6 183
INDIAN CREEK 9425 .9 .0 * 1.5 .7 214
KELLEY R.S. 8180 .0 .0 100* 1.1 .5 220
STEEL CREEK PARK 10100 .0 .7 0* 1.3 .7 186
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Basin wide percent of average 0* 188
UPPER BEAR RIVER
BUG LAKE 7950 .1 .5 20* 1.5 1.0 150
HAYDEN FORK 9400 .0 .2 0* .9 .7 129
KELLEY R.S. 8180 .0 .0 100* 1.1 .5 220
LILY LAKE 9050 .0 .3 0* 1.4 .8 175
MONTE CRISTO 8960 .1 .6 17* 1.6 1.0 160
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .5 240
TRIAL LAKE 9960 .1 .6 17* .9 .8 112
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Basin wide percent of average 14* 162
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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.