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 9 , 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 .2 .0 * .7 .5 140
COTTONWOOD CREEK 7600 .0 .0 100* 1.1 .6 183
GRANITE CREEK 6770 .1 .0 * .2 .6 33
GRASSY LAKE 7265 .1 .0 * 1.0 .9 111
GROS VENTRE SUMMIT 8775 .2 .0 * .5 .4 125
LEWIS LAKE DIVIDE 7860 .0 .0 100* .6 .9 67
PHILLIPS BENCH 8200 .1 .0 * .7 .7 100
SALT RIVER SUMMIT 7600 .2 .0 * .9 .4 225
SNAKE RIVER STATION 6920 .0 .0 100* .5 .6 83
SPRING CREEK DIVIDE 9000 .0 .0 100* .4 .5 80
THUMB DIVIDE 7980 .1 .0 * .4 .5 80
TOGWOTEE PASS 9580 .6 .6 100* .7 .6 117
TWO OCEAN PLATEAU 9360 .6 .7 86* 1.2 .7 171
WILLOW CREEK 8450 .0 .0 100* 1.7 .7 243
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Basin wide percent of average 92* 123
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .6 1.1 55* .6 .5 120
BLACK BEAR 7950 .2 .9 22* .5 .9 56
CANYON 7940 .1 .2 50* .2 .5 40
FISHER CREEK 9100 .5 .7 71* .3 .8 38
MADISON PLATEAU 7750 .1 .4 25* .4 .6 67
NORTHEAST ENTRANCE 7350 .0 .0 100* .8 .4 200
PARKER PEAK 9400 .5 1.3 38* 1.0 .6 167
SYLVAN LAKE 8420 .9 .9 100* 2.0 .7 286
THUMB DIVIDE 7980 .1 .0 * .4 .5 80
TWO OCEAN PLATEAU 9360 .6 .7 86* 1.2 .7 171
WHISKEY CREEK 6800 .0 .1 0* .2 .6 33
WHITE MILL 8700 .3 .6 50* .7 .7 100
WOLVERINE 7650 .5 .1 500* 1.5 .4 375
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Basin wide percent of average 61* 124
WIND RIVER
BURROUGHS CREEK 8750 .1 .2 50* .5 .4 125
COLD SPRINGS 9630 .0 .2 0* .3 .5 60
DEER PARK 9700 .0 -M * .0 -M *
HOBBS PARK 10100 .2 .6 33* .0 .5 0
LITTLE WARM 9620 .2 .3 67* .8 .5 160
SOUTH PASS 9040 .3 .8 38* .8 .6 133
ST. LAWRENCE ALT 8620 .5 .2 250* .2 .4 50
TOGWOTEE PASS 9580 .6 .6 100* .7 .6 117
TOWNSEND CREEK 8700 .0 .2 0* .4 .5 80
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Basin wide percent of average 61* 93
BIGHORN BASIN
BALD MTN. 9375 1.3 1.1 118* 1.0 .6 167
BEAR TRAP MEADOW 7900 .1 .2 50* .2 .4 50
BLACKWATER 9780 .1 1.0 10* .5 .6 83
BONE SPRINGS DIV 9350 .9 1.3 69* 1.2 .6 200
EVENING STAR 9200 .4 1.2 33* 1.3 .7 186
GRAVE SPRINGS 8550 .3 -M * .6 .5 120
KIRWIN 9550 .2 .5 40* .3 .4 75
LOST CREEK 8080 -M .4 * -M .5 *
MARQUETTE 8760 .6 .4 150* .8 .5 160
MIDDLE POWDER 7760 .7 .5 140* .7 .5 140
OWL CREEK 8975 .4 .4 100* .3 .3 100
POWDER RIVER PASS 9480 .4 .4 100* .4 .5 80
SHELL CREEK 9580 .8 1.2 67* .5 .5 100
SYLVAN LAKE 8420 .9 .9 100* 2.0 .7 286
SYLVAN ROAD 8120 .1 .5 20* 1.1 .6 183
TIMBER CREEK 7950 -M .1 * .9 .3 300
YOUNTS PEAK 8350 .1 .7 14* .4 .5 80
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Basin wide percent of average 68* 149
SHOSHONE RIVER
BLACKWATER 9780 .1 1.0 10* .5 .6 83
EVENING STAR 9200 .4 1.2 33* 1.3 .7 186
KIRWIN 9550 .2 .5 40* .3 .4 75
MARQUETTE 8760 .6 .4 150* .8 .5 160
SYLVAN LAKE 8420 .9 .9 100* 2.0 .7 286
SYLVAN ROAD 8120 .1 .5 20* 1.1 .6 183
YOUNTS PEAK 8350 .1 .7 14* .4 .5 80
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Basin wide percent of average 46* 160
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .2 50* .2 .4 50
BONE SPRINGS DIV 9350 .9 1.3 69* 1.2 .6 200
BURGESS JUNCTION 7880 .3 .5 60* .7 .5 140
CLOUD PEAK RESERVOIR 9860 .3 .4 75* 1.3 .5 260
DOME LAKE 8880 .4 .6 67* 1.1 .6 183
GRAVE SPRINGS 8550 .3 -M * .6 .5 120
HANSEN SAWMILL 8760 .2 .2 100* .8 .4 200
LOST CREEK 8080 -M .4 * -M .5 *
MIDDLE POWDER 7760 .7 .5 140* .7 .5 140
POWDER RIVER PASS 9480 .4 .4 100* .4 .5 80
SUCKER CREEK 8880 .5 .4 125* .5 .6 83
TIE CREEK 6870 .1 -M * .8 .5 160
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Basin wide percent of average 84* 148
BELLE FOURCHE
BLIND PARK 6890 .1 .5 20* .5 .5 100
NORTH RAPID CREEK 6130 .2 -M * .2 -M *
WARREN PEAK 6520 .3 .5 60* .6 .4 150
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Basin wide percent of average 40* 122
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .3 0* .7 .6 117
DIVIDE PEAK 8800 .1 .3 33* .6 .8 75
ELK RIVER 8700 .0 .0 100* 1.1 .6 183
JOE WRIGHT 10120 .0 .6 0* .7 .9 78
NORTH FRENCH CREEK 10100 .2 .3 67* 1.0 .6 167
OLD BATTLE 10000 .8 1.2 67* 1.4 .8 175
SOUTH BRUSH CREEK 8400 .0 .1 0* .4 .6 67
TOWER 10500 -M 1.2 * -M 1.0 *
WEBBER SPRINGS 9200 .1 .3 33* 1.2 .8 150
WILLOW CREEK PASS 9540 .0 .1 0* .2 .5 40
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Basin wide percent of average 38* 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .6 0* .2 .6 33
CASPER MTN. 7900 .4 .2 200* .5 .6 83
DEADMAN HILL 10220 .0 .2 0* .1 .6 17
DEER PARK 9700 .0 -M * .0 -M *
LAPRELE CREEK 8320 .1 .1 100* .4 .4 100
RENO HILL 8400 .4 .3 133* .4 .6 67
ROACH 9700 .0 .2 0* .5 .7 71
SAND LAKE 10080 .3 .5 60* .6 .7 86
SOUTH PASS 9040 .3 .8 38* .8 .6 133
WINDY PEAK 7840 .0 .0 100* .5 .3 167
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Basin wide percent of average 52* 78
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.5 .5 300
DIVIDE PEAK 8800 .1 .3 33* .6 .8 75
OLD BATTLE 10000 .8 1.2 67* 1.4 .8 175
SANDSTONE RS 8150 .0 .0 100* 1.4 .4 350
WHISKEY PARK 8950 .1 .3 33* -M .5 *
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Basin wide percent of average 56* 196
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .4 .0 * .6 .4 150
BLIND BULL SUM 8650 .1 .0 * .8 .5 160
EAST RIM DIVIDE 7930 .0 .0 100* .1 .4 25
ELKHART PARK G.S. 9400 .5 .0 * .9 .4 225
GROS VENTRE SUMMIT 8775 .2 .0 * .5 .4 125
KENDALL R.S. 7740 .0 .0 100* .5 .4 125
LOOMIS PARK 8240 .0 .0 100* .3 .5 60
NEW FORK LAKE 8340 .0 .0 100* .3 .4 75
SNIDER BASIN 8250 .0 .0 100* .0 .4 0
SPRING CREEK DIVIDE 9000 .0 .0 100* .4 .5 80
TRIPLE PEAK 8500 .0 .0 100* .6 .7 86
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Basin wide percent of average * 100
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .3 .3 100
HEWINTA 9500 -M .1 * 1.4 .6 233
HICKERSON PARK 9150 .0 .0 100* 1.3 .5 260
HOLE-IN-ROCK 9150 .0 .0 100* 1.2 .5 240
INDIAN CREEK 9425 .1 .0 * .2 .6 33
KELLEY R.S. 8180 .0 .0 100* .2 .5 40
STEEL CREEK PARK 10100 .2 .6 33* 1.3 .6 217
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Basin wide percent of average 33* 164
UPPER BEAR RIVER
BUG LAKE 7950 .3 .4 75* .7 .9 78
HAYDEN FORK 9400 .0 .2 0* 1.0 .6 167
KELLEY R.S. 8180 .0 .0 100* .2 .5 40
LILY LAKE 9050 .0 .3 0* .9 .7 129
MONTE CRISTO 8960 .2 .5 40* .6 .9 67
SALT RIVER SUMMIT 7600 .2 .0 * .9 .4 225
TRIAL LAKE 9960 .1 .5 20* .8 .7 114
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Basin wide percent of average 32* 109
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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.