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 3 , 1997
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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* .1 .1 100
COTTONWOOD CREEK 7600 .0 .0 100* .5 .1 500
GRANITE CREEK 6770 .2 .0 * .1 .1 100
GRASSY LAKE 7265 .1 .0 * .8 .2 400
GROS VENTRE SUMMIT 8775 .1 .0 * .1 .1 100
LEWIS LAKE DIVIDE 7860 .0 .0 100* .6 .2 300
PHILLIPS BENCH 8200 .1 .0 * .3 .2 150
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .1 1100
SNAKE RIVER STATION 6920 .0 .0 100* .3 .1 300
SPRING CREEK DIVIDE 9000 .0 .0 100* .1 .1 100
THUMB DIVIDE 7980 .1 .0 * .3 .1 300
TOGWOTEE PASS 9580 -M .1 * .1 .2 50
TWO OCEAN PLATEAU 9360 .2 .2 100* .5 .2 250
WILLOW CREEK 8450 .1 .0 * .8 .2 400
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Basin wide percent of average 100* 285
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .7 0* -M .1 *
BLACK BEAR 7950 .1 .5 20* .2 .2 100
CANYON 7940 .2 .1 200* .0 .1 0
FISHER CREEK 9100 .1 .5 20* .0 .2 0
MADISON PLATEAU 7750 .0 .2 0* .2 .2 100
NORTHEAST ENTRANCE 7350 .0 .0 100* .1 .1 100
PARKER PEAK 9400 .0 .9 0* .3 .1 300
SYLVAN LAKE 8420 .1 .8 12* .6 .2 300
THUMB DIVIDE 7980 .1 .0 * .3 .1 300
TWO OCEAN PLATEAU 9360 .2 .2 100* .5 .2 250
WHISKEY CREEK 6800 .0 .0 100* .2 .1 200
WHITE MILL 8700 .1 .4 25* .2 .2 100
WOLVERINE 7650 .1 .0 * .2 .1 200
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Basin wide percent of average 19* 156
WIND RIVER
BURROUGHS CREEK 8750 .0 .1 0* .2 .1 200
CHRISTINA LAKE 9980 -M .5 * -M .2 *
COLD SPRINGS 9630 .0 .1 0* .1 .1 100
HOBBS PARK 10100 .1 .4 25* .0 .1 0
LITTLE WARM 9620 .0 .1 0* .3 .1 300
SOUTH PASS 9040 .1 .4 25* .2 .1 200
ST. LAWRENCE ALT 8620 .1 .0 * .0 .1 0
TOGWOTEE PASS 9580 -M .1 * .1 .2 50
TOWNSEND CREEK 8700 .0 .0 100* .0 .1 0
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Basin wide percent of average 18* 100
BIGHORN BASIN
BALD MTN. 9375 .2 .7 29* .1 .1 100
BEAR TRAP MEADOW 7900 .1 .1 100* .0 .1 0
BLACKWATER 9780 .0 .8 0* .0 .2 0
BONE SPRINGS DIV 9350 .1 .9 11* .1 .1 100
EVENING STAR 9200 .0 .7 0* .4 .2 200
GRAVE SPRINGS 8550 .1 -M * .1 .1 100
KIRWIN 9550 .1 .4 25* -M .1 *
LOST CREEK 8080 -M .3 * -M .1 *
MARQUETTE 8760 .0 .3 0* -M .1 *
MIDDLE POWDER 7760 .2 .3 67* .2 .1 200
OWL CREEK 8975 .0 .3 0* -M .1 *
POWDER RIVER PASS 9480 .0 .2 0* .1 .1 100
SHELL CREEK 9580 .1 .8 12* .1 .1 100
SYLVAN LAKE 8420 .1 .8 12* .6 .2 300
SYLVAN ROAD 8120 .0 .3 0* .3 .1 300
TIMBER CREEK 7950 .1 .0 * .0 .1 0
YOUNTS PEAK 8350 .0 .4 0* .1 .1 100
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Basin wide percent of average 13* 131
SHOSHONE RIVER
BLACKWATER 9780 .0 .8 0* .0 .2 0
EVENING STAR 9200 .0 .7 0* .4 .2 200
KIRWIN 9550 .1 .4 25* -M .1 *
MARQUETTE 8760 .0 .3 0* -M .1 *
SYLVAN LAKE 8420 .1 .8 12* .6 .2 300
SYLVAN ROAD 8120 .0 .3 0* .3 .1 300
YOUNTS PEAK 8350 .0 .4 0* .1 .1 100
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Basin wide percent of average 5* 175
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .1 100* .0 .1 0
BONE SPRINGS DIV 9350 .1 .9 11* .1 .1 100
BURGESS JUNCTION 7880 .1 .4 25* .1 .1 100
CLOUD PEAK RESERVOIR 9860 .0 .3 0* .3 .1 300
DOME LAKE 8880 .1 .4 25* .0 .1 0
GRAVE SPRINGS 8550 .1 -M * .1 .1 100
HANSEN SAWMILL 8760 .0 .1 0* .0 .1 0
LOST CREEK 8080 -M .3 * -M .1 *
MIDDLE POWDER 7760 .2 .3 67* .2 .1 200
POWDER RIVER PASS 9480 .0 .2 0* .1 .1 100
SUCKER CREEK 8880 .0 .3 0* .0 .1 0
TIE CREEK 6870 .0 -M * .1 .1 100
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Basin wide percent of average 20* 91
BELLE FOURCHE
BLIND PARK 6890 .0 .2 0* .0 .1 0
NORTH RAPID CREEK 6130 .0 -M * .3 -M *
WARREN PEAK 6520 .0 .2 0* .1 .1 100
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Basin wide percent of average 0* 50
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .1 0* .4 .2 200
DIVIDE PEAK 8800 .0 .1 0* .1 .2 50
ELK RIVER 8700 .0 .0 100* -M .1 *
JOE WRIGHT 10120 .0 .2 0* .2 .2 100
NORTH FRENCH CREEK 10100 .4 .1 400* .2 .1 200
OLD BATTLE 10000 .4 .6 67* .3 .2 150
SOUTH BRUSH CREEK 8400 .2 .0 * .0 .1 0
TOWER 10500 .0 .3 0* .2 .3 67
WEBBER SPRINGS 9200 .0 .1 0* .3 .2 150
WILLOW CREEK PASS 9540 .0 .0 100* .3 .1 300
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Basin wide percent of average 53* 125
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .3 0* .0 .2 0
CASPER MTN. 7900 .1 .1 100* .0 .2 0
CHRISTINA LAKE 9980 -M .5 * -M .2 *
DEADMAN HILL 10220 .2 .1 200* .1 .2 50
LAPRELE CREEK 8320 .0 .0 100* .0 .1 0
RENO HILL 8400 .1 .1 100* .0 .2 0
ROACH 9700 .0 .1 0* .2 .2 100
SAND LAKE 10080 .1 .1 100* .0 .2 0
SOUTH PASS 9040 .1 .4 25* .2 .1 200
WINDY PEAK 7840 .3 .0 * .0 .1 0
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Basin wide percent of average 50* 33
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .4 .1 400
DIVIDE PEAK 8800 .0 .1 0* .1 .2 50
OLD BATTLE 10000 .4 .6 67* .3 .2 150
SANDSTONE RS 8150 .0 .0 100* .4 .1 400
WHISKEY PARK 8950 -M .1 * -M .1 *
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Basin wide percent of average 57* 200
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .1 .0 * .1 .1 100
BLIND BULL SUM 8650 .1 .0 * .4 .1 400
EAST RIM DIVIDE 7930 .0 .0 100* .0 .1 0
ELKHART PARK G.S. 9400 .0 .0 100* .1 .1 100
GROS VENTRE SUMMIT 8775 .1 .0 * .1 .1 100
KENDALL R.S. 7740 .1 .0 * .1 .1 100
LOOMIS PARK 8240 .0 .0 100* .0 .1 0
NEW FORK LAKE 8340 .0 .0 100* .0 .1 0
SNIDER BASIN 8250 .1 .0 * .0 .1 0
SPRING CREEK DIVIDE 9000 .0 .0 100* .1 .1 100
TRIPLE PEAK 8500 .1 .0 * .5 .2 250
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Basin wide percent of average * 117
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .0 .1 0
HEWINTA 9500 .2 .0 * .2 .2 100
HICKERSON PARK 9150 .0 .0 100* .1 .1 100
HOLE-IN-ROCK 9150 .0 .0 100* .1 .1 100
INDIAN CREEK 9425 .1 .0 * .1 .1 100
KELLEY R.S. 8180 .3 .0 * .2 .1 200
STEEL CREEK PARK 10100 .0 .5 0* .5 .2 250
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Basin wide percent of average 0* 133
UPPER BEAR RIVER
BUG LAKE 7950 .1 .3 33* .1 .2 50
HAYDEN FORK 9400 .0 .1 0* .5 .2 250
KELLEY R.S. 8180 .3 .0 * .2 .1 200
LILY LAKE 9050 .8 .2 400* .2 .2 100
MONTE CRISTO 8960 .1 .4 25* .0 .2 0
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .1 1100
TRIAL LAKE 9960 .1 .4 25* .2 .2 100
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Basin wide percent of average 79* 192
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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.