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 FRIDAY: OCTOBER 9 , 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 .6 300
GRANITE CREEK 6770 .0 .0 100* .2 .6 33
GRASSY LAKE 7265 .0 .0 100* .1 .9 11
GROS VENTRE SUMMIT 8775 .5 .0 * .6 .4 150
LEWIS LAKE DIVIDE 7860 .0 .0 100* .1 .9 11
PHILLIPS BENCH 8200 .0 .0 100* .4 .7 57
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .4 300
SNAKE RIVER STATION 6920 .0 .0 100* .2 .6 33
SPRING CREEK DIVIDE 9000 .5 .0 * 1.2 .5 240
THUMB DIVIDE 7980 .1 .0 * .1 .5 20
TOGWOTEE PASS 9580 .5 .6 83* .8 .6 133
TWO OCEAN PLATEAU 9360 .2 .7 29* .8 .7 114
WILLOW CREEK 8450 .0 .0 100* 1.4 .7 200
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Basin wide percent of average 54* 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .2 1.1 18* .6 .5 120
BLACK BEAR 7950 .0 .9 0* .2 .9 22
CANYON 7940 .0 .2 0* .1 .5 20
FISHER CREEK 9100 .1 .7 14* .7 .8 88
MADISON PLATEAU 7750 .0 .4 0* .1 .6 17
NORTHEAST ENTRANCE 7350 .0 .0 100* .4 .4 100
PARKER PEAK 9400 .0 1.3 0* .8 .6 133
SYLVAN LAKE 8420 .1 .9 11* .8 .7 114
THUMB DIVIDE 7980 .1 .0 * .1 .5 20
TWO OCEAN PLATEAU 9360 .2 .7 29* .8 .7 114
WHISKEY CREEK 6800 .0 .1 0* .0 .6 0
WHITE MILL 8700 .0 .6 0* .5 .7 71
WOLVERINE 7650 .1 .1 100* .7 .4 175
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Basin wide percent of average 10* 73
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .5 .4 125
COLD SPRINGS 9630 .1 .2 50* .9 .5 180
DEER PARK 9700 .9 -M * 1.7 -M *
HOBBS PARK 10100 2.1 .6 350* 2.4 .5 480
LITTLE WARM 9620 .3 .3 100* .9 .5 180
SOUTH PASS 9040 .6 .8 75* 1.4 .6 233
ST. LAWRENCE ALT 8620 .6 .2 300* 1.6 .4 400
TOGWOTEE PASS 9580 .5 .6 83* .8 .6 133
TOWNSEND CREEK 8700 1.2 .2 600* 2.1 .5 420
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Basin wide percent of average 187* 265
BIGHORN BASIN
BALD MTN. 9375 1.2 1.1 109* 1.3 .6 217
BEAR TRAP MEADOW 7900 .1 .2 50* 1.1 .4 275
BLACKWATER 9780 .6 1.0 60* 1.2 .6 200
BONE SPRINGS DIV 9350 .6 1.3 46* 1.2 .6 200
EVENING STAR 9200 .0 1.2 0* .4 .7 57
GRAVE SPRINGS 8550 .6 -M * 1.3 .5 260
KIRWIN 9550 .5 .5 100* .8 .4 200
MARQUETTE 8760 .8 .4 200* 1.4 .5 280
MIDDLE POWDER 7760 .3 .5 60* 1.5 .5 300
OWL CREEK 8975 .5 .4 125* .9 .3 300
POWDER RIVER PASS 9480 .1 .4 25* .9 .5 180
SHELL CREEK 9580 1.0 1.2 83* .8 .5 160
SYLVAN LAKE 8420 .1 .9 11* .8 .7 114
SYLVAN ROAD 8120 .0 .5 0* .3 .6 50
TIMBER CREEK 7950 .4 .1 400* 1.3 .3 433
YOUNTS PEAK 8350 .2 .7 29* .6 .5 120
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Basin wide percent of average 62* 193
SHOSHONE RIVER
BLACKWATER 9780 .6 1.0 60* 1.2 .6 200
EVENING STAR 9200 .0 1.2 0* .4 .7 57
KIRWIN 9550 .5 .5 100* .8 .4 200
MARQUETTE 8760 .8 .4 200* 1.4 .5 280
SYLVAN LAKE 8420 .1 .9 11* .8 .7 114
SYLVAN ROAD 8120 .0 .5 0* .3 .6 50
YOUNTS PEAK 8350 .2 .7 29* .6 .5 120
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Basin wide percent of average 42* 138
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .2 50* 1.1 .4 275
BONE SPRINGS DIV 9350 .6 1.3 46* 1.2 .6 200
BURGESS JUNCTION 7880 .1 .5 20* 1.0 .5 200
CLOUD PEAK RESERVOIR 9860 .9 .4 225* 1.8 .5 360
DOME LAKE 8880 .4 .6 67* 1.1 .6 183
GRAVE SPRINGS 8550 .6 -M * 1.3 .5 260
HANSEN SAWMILL 8760 .1 .2 50* .9 .4 225
MIDDLE POWDER 7760 .3 .5 60* 1.5 .5 300
POWDER RIVER PASS 9480 .1 .4 25* .9 .5 180
SUCKER CREEK 8880 .6 .4 150* 1.0 .6 167
TIE CREEK 6870 .1 -M * .7 .5 140
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Basin wide percent of average 71* 223
BELLE FOURCHE
BLIND PARK 6890 .0 .5 0* 3.0 .5 600
NORTH RAPID CREEK 6130 .0 -M * 3.8 -M *
WARREN PEAK 6520 .0 .5 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* 2.1 .6 350
DIVIDE PEAK 8800 -M .3 * -M .8 *
ELK RIVER 8700 .0 .0 100* 3.5 .6 583
JOE WRIGHT 10120 1.6 .6 267* 3.4 .9 378
NORTH FRENCH CREEK 10100 2.3 .3 767* 3.5 .6 583
OLD BATTLE 10000 1.7 1.2 142* 3.4 .8 425
SOUTH BRUSH CREEK 8400 -M .1 * -M .6 *
TOWER 10500 1.6 1.2 133* 3.3 1.0 330
WEBBER SPRINGS 9200 .0 .3 0* 2.4 .8 300
WILLOW CREEK PASS 9540 .3 .1 300* 1.7 .5 340
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Basin wide percent of average 188* 402
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .9 .6 150* .0 .6 0
CASPER MTN. 7900 1.0 .2 500* 2.2 .6 367
DEADMAN HILL 10220 .9 .2 450* 1.7 .6 283
DEER PARK 9700 .9 -M * 1.7 -M *
LAPRELE CREEK 8320 .0 .1 0* 2.6 .4 650
RENO HILL 8400 2.0 .3 667* 2.9 .6 483
ROACH 9700 .0 .2 0* 1.4 .7 200
SAND LAKE 10080 2.7 .5 540* 4.4 .7 629
SOUTH PASS 9040 .6 .8 75* 1.4 .6 233
WINDY PEAK 7840 .0 .0 100* 3.0 .3 1000
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Basin wide percent of average 279* 384
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.1 .5 420
DIVIDE PEAK 8800 -M .3 * -M .8 *
OLD BATTLE 10000 1.7 1.2 142* 3.4 .8 425
SANDSTONE RS 8150 .0 .0 100* 3.1 .4 775
WHISKEY PARK 8950 .5 .3 167* 3.4 .5 680
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Basin wide percent of average 147* 545
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 .4 100
ELKHART PARK G.S. 9400 .0 .0 100* .6 .4 150
GROS VENTRE SUMMIT 8775 .5 .0 * .6 .4 150
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* .4 .4 100
SNIDER BASIN 8250 .0 .0 100* .7 .4 175
SPRING CREEK DIVIDE 9000 .5 .0 * 1.2 .5 240
TRIPLE PEAK 8500 .0 .0 100* 1.0 .7 143
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Basin wide percent of average * 160
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .3 433
HEWINTA 9500 .0 .1 0* 1.0 .6 167
HICKERSON PARK 9150 .4 .0 * .6 .5 120
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .5 220
INDIAN CREEK 9425 .9 .0 * 1.5 .6 250
KELLEY R.S. 8180 .1 .0 * 1.1 .5 220
STEEL CREEK PARK 10100 .1 .6 17* 1.3 .6 217
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Basin wide percent of average 14* 219
UPPER BEAR RIVER
BUG LAKE 7950 .1 .4 25* 1.5 .9 167
HAYDEN FORK 9400 .0 .2 0* 1.0 .6 167
KELLEY R.S. 8180 .1 .0 * 1.1 .5 220
LILY LAKE 9050 .0 .3 0* 1.4 .7 200
MONTE CRISTO 8960 .0 .5 0* 1.6 .9 178
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 11* 185
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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.