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 SUNDAY: OCTOBER 4 , 2009
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100 .0 .1 0
COTTONWOOD CREEK 7670 .6 .0 .1 .2 50
GRAND TARGHEE 9260 2.0 -M * .4 -M *
GRANITE CREEK 6770 .1 .0 .1 .1 100
GRASSY LAKE 7265 .2 .0 .1 .2 50
GROS VENTRE SUMMIT 8750 .1 .0 .1 .1 100
GUNSIGHT PASS 9820 .0 -M * .2 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 .1 .2 50
PHILLIPS BENCH 8200 .0 .0 100 .1 .1 100
SALT RIVER SUMMIT 7760 .3 .0 .2 .1 200
SNAKE RIVER STATION 6920 .0 .0 100 .1 .1 100
SPRING CREEK DIVIDE 9000 .3 .0 .3 .1 300
THUMB DIVIDE 7980 .0 .0 100 .2 .1 200
TOGWOTEE PASS 9580 .6 .1 600 .2 .2 100
TWO OCEAN PLATEAU 9240 .4 .2 200 .0 .2 0
WILLOW CREEK 8380 .8 .0 .1 .2 50
----- -----
Basin wide percent of average 333* 85
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .6 .5 120 .1 .1 100
BLACK BEAR 8170 .1 .3 33 .1 .2 50
CANYON 7870 .0 .1 0 .3 .1 300
FISHER CREEK 9100 .3 .3 100 .2 .2 100
MADISON PLATEAU 7750 .1 .2 50 .1 .2 50
NORTHEAST ENTRANCE 7350 .0 .0 100 .1 .1 100
PARKER PEAK 9400 -M .6 * .1 .2 50
SYLVAN LAKE 8420 .0 .5 0 .0 .2 0
THUMB DIVIDE 7980 .0 .0 100 .2 .1 200
TWO OCEAN PLATEAU 9240 .4 .2 200 .0 .2 0
WHISKEY CREEK 6800 .2 .1 200 .4 .1 400
WHITE MILL 8700 .2 .2 100 .1 .2 50
WOLVERINE 7650 .1 .0 .1 .1 100
----- -----
Basin wide percent of average 79 90
WIND RIVER
BURROUGHS CREEK 8750 .1 .2 50 .4 .1 400
COLD SPRINGS 9630 .1 .2 50 .3 .1 300
DEER PARK 9700 .0 .3 0 .1 .1 100
HOBBS PARK 10100 .1 .4 25 -M .1 *
LITTLE WARM 9370 .0 .2 0 .1 .1 100
SOUTH PASS 9040 .0 .2 0 .0 .1 0
ST. LAWRENCE ALT 8620 .0 .1 0 .1 .1 100
TOGWOTEE PASS 9580 .6 .1 600 .2 .2 100
TOWNSEND CREEK 8700 .1 .1 100 .0 .1 0
----- -----
Basin wide percent of average 56 133
BIGHORN BASIN
BALD MTN. 9380 .8 .7 114 .2 .2 100
BEAR TRAP MEADOW 8200 .1 .2 50 .1 .1 100
BLACKWATER 9780 .6 .7 86 .2 .2 100
BONE SPRINGS DIV 9350 .8 .6 133 .2 .2 100
EVENING STAR 9200 .4 .6 67 .2 .2 100
GRAVE SPRINGS 8550 .5 .1 500 .3 .2 150
KIRWIN 9550 .7 .4 175 .1 .1 100
MARQUETTE 8760 .3 .5 60 .1 .2 50
MIDDLE POWDER 7760 1.1 .3 367 .4 .2 200
OWL CREEK 8975 .5 .3 167 .1 .1 100
POWDER RIVER PASS 9480 .2 .3 67 .2 .1 200
SHELL CREEK 9580 .4 .8 50 .2 .1 200
SYLVAN LAKE 8420 .0 .5 0 .0 .2 0
SYLVAN ROAD 7120 .2 .0 .1 .1 100
TIMBER CREEK 7950 .0 .1 0 .1 .1 100
YOUNTS PEAK 8350 .2 .2 100 .1 .1 100
----- -----
Basin wide percent of average 105 108
SHOSHONE RIVER
BLACKWATER 9780 .6 .7 86 .2 .2 100
EVENING STAR 9200 .4 .6 67 .2 .2 100
KIRWIN 9550 .7 .4 175 .1 .1 100
MARQUETTE 8760 .3 .5 60 .1 .2 50
SYLVAN LAKE 8420 .0 .5 0 .0 .2 0
SYLVAN ROAD 7120 .2 .0 .1 .1 100
YOUNTS PEAK 8350 .2 .2 100 .1 .1 100
----- -----
Basin wide percent of average 76 73
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .2 50 .1 .1 100
BIG GOOSE 7990 .1 .0 .1 .2 50
BONE SPRINGS DIV 9350 .8 .6 133 .2 .2 100
BURGESS JUNCTION 7880 .5 .4 125 .2 .2 100
CLOUD PEAK RESERVOIR 9860 .3 .2 150 .1 .2 50
DOME LAKE 8880 .0 .3 0 .2 .2 100
GRAVE SPRINGS 8550 .5 .1 500 .3 .2 150
HANSEN SAWMILL 8360 .1 .1 100 .0 .1 0
MIDDLE POWDER 7760 1.1 .3 367 .4 .2 200
POWDER RIVER PASS 9480 .2 .3 67 .2 .1 200
SUCKER CREEK 8880 .4 .3 133 .2 .2 100
TIE CREEK 6870 .0 .1 0 .1 .2 50
----- -----
Basin wide percent of average 138 100
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 .7 .2 350
COLE CANYON 5910 .1 .0 .4 .1 400
NORTH RAPID CREEK 6130 .1 .0 .4 .2 200
----- -----
Basin wide percent of average * 300
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100 .6 .1 600
DIVIDE PEAK 8880 .4 .2 200 .6 .1 600
ELK RIVER 8700 .0 .0 100 .3 .1 300
JOE WRIGHT 10120 .0 .2 0 .3 .2 150
NORTH FRENCH CREEK 10130 .9 .3 300 .7 .2 350
OLD BATTLE 10000 1.2 .3 400 .6 .2 300
SAGE CREEK BASIN 7850 .0 .0 100 .3 .1 300
SOUTH BRUSH CREEK 8440 .1 .0 .8 .1 800
TOWER 10500 1.2 .2 600 .6 .2 300
WEBBER SPRINGS 9250 .2 .1 200 .4 .2 200
WILLOW CREEK PASS 9540 .0 .0 100 .3 .1 300
----- -----
Basin wide percent of average 300 344
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 .3 33 .3 .1 300
CASPER MTN. 7900 .0 .0 100 .4 .1 400
DEADMAN HILL 10220 .0 .3 0 .2 .2 100
DEER PARK 9700 .0 .3 0 .1 .1 100
LAPRELE CREEK 8375 .0 .1 0 .2 .1 200
RENO HILL 8400 .3 .1 300 .5 .1 500
ROACH 9700 .1 .1 100 .2 .1 200
SAND LAKE 10050 .8 .5 160 .6 .2 300
SOUTH PASS 9040 .0 .2 0 .0 .1 0
WINDY PEAK 7900 .0 .0 100 .3 .1 300
----- -----
Basin wide percent of average 68 233
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 .5 .1 500
DIVIDE PEAK 8880 .4 .2 200 .6 .1 600
OLD BATTLE 10000 1.2 .3 400 .6 .2 300
SANDSTONE RS 8150 -M .0 * .3 .1 300
WHISKEY PARK 8950 .5 .1 500 .5 .2 250
----- -----
Basin wide percent of average 350 357
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .2 .0 .0 .1 0
BLIND BULL SUM 8650 .1 .0 .1 .1 100
EAST RIM DIVIDE 7930 .0 .0 100 .0 .1 0
ELKHART PARK G.S. 9400 .5 .0 .2 .1 200
GROS VENTRE SUMMIT 8750 .1 .0 .1 .1 100
GUNSIGHT PASS 9820 .0 -M * .2 -M *
KENDALL R.S. 7740 .1 .0 .0 .1 0
LOOMIS PARK 8240 .1 .0 .0 .1 0
NEW FORK LAKE 8340 .0 .0 100 .4 .1 400
SNIDER BASIN 8060 .2 .0 .2 .1 200
SPRING CREEK DIVIDE 9000 .3 .0 .3 .1 300
TRIPLE PEAK 8500 .1 .0 .1 .1 100
----- -----
Basin wide percent of average * 127
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 .0 .1 0
HEWINTA 9519 .1 .1 100 .1 .1 100
HICKERSON PARK 9145 .1 .0 .1 .1 100
HOLE-IN-ROCK 9150 .0 .0 100 .0 .1 0
INDIAN CREEK 9425 .1 .0 .4 .1 400
KELLEY R.S. 8180 .3 .0 .3 .1 300
STEEL CREEK PARK 10200 .0 .3 0 .1 .1 100
----- -----
Basin wide percent of average 25* 143
UPPER BEAR RIVER
BUG LAKE 7950 .2 .2 100 .1 .1 100
HAYDEN FORK 9212 -M .1 * -M .1 *
KELLEY R.S. 8180 .3 .0 .3 .1 300
LILY LAKE 9156 .2 .2 100 .0 .1 0
MONTE CRISTO 8960 .2 .3 67 .2 .2 100
SALT RIVER SUMMIT 7760 .3 .0 .2 .1 200
TRIAL LAKE 9992 .5 .4 125 .2 .2 100
----- -----
Basin wide percent of average 100 125
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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.
----------------------------------------------------------------------------
-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.