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 10 , 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 .1 .0 * .8 .6 133
COTTONWOOD CREEK 7600 .0 .0 100* 1.1 .6 183
GRANITE CREEK 6770 .2 .0 * .2 .7 29
GRASSY LAKE 7265 .3 .0 * 1.4 1.0 140
GROS VENTRE SUMMIT 8775 .4 .0 * .6 .5 120
LEWIS LAKE DIVIDE 7860 .5 .0 * 1.1 1.0 110
PHILLIPS BENCH 8200 .1 .0 * .8 .8 100
SALT RIVER SUMMIT 7600 .2 .0 * 1.5 .5 300
SNAKE RIVER STATION 6920 .1 .0 * .6 .7 86
SPRING CREEK DIVIDE 9000 .0 .0 100* .4 .6 67
THUMB DIVIDE 7980 .3 .0 * .7 .6 117
TOGWOTEE PASS 9580 .7 .6 117* .7 .7 100
TWO OCEAN PLATEAU 9360 .7 .8 88* 1.4 .8 175
WILLOW CREEK 8450 .1 .0 * 1.7 .8 212
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Basin wide percent of average 100* 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .7 1.2 58* .8 .6 133
BLACK BEAR 7950 .8 .9 89* 1.1 1.0 110
CANYON 7940 .4 .2 200* .4 .5 80
FISHER CREEK 9100 .8 .7 114* .6 .9 67
MADISON PLATEAU 7750 .4 .4 100* .8 .7 114
NORTHEAST ENTRANCE 7350 .0 .0 100* .9 .4 225
PARKER PEAK 9400 .8 1.4 57* 1.1 .6 183
SYLVAN LAKE 8420 1.0 1.0 100* 2.3 .8 288
THUMB DIVIDE 7980 .3 .0 * .7 .6 117
TWO OCEAN PLATEAU 9360 .7 .8 88* 1.4 .8 175
WHISKEY CREEK 6800 .3 .1 300* .6 .6 100
WHITE MILL 8700 .5 .6 83* 1.0 .8 125
WOLVERINE 7650 .3 .1 300* 1.4 .5 280
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Basin wide percent of average 91* 149
WIND RIVER
BURROUGHS CREEK 8750 .2 .2 100* .5 .5 100
COLD SPRINGS 9630 .1 .2 50* .3 .6 50
DEER PARK 9700 .0 -M * .0 -M *
HOBBS PARK 10100 .4 .6 67* .2 .6 33
LITTLE WARM 9620 .3 .3 100* .9 .5 180
SOUTH PASS 9040 .2 .9 22* .7 .6 117
ST. LAWRENCE ALT 8620 .4 .2 200* .5 .5 100
TOGWOTEE PASS 9580 .7 .6 117* .7 .7 100
TOWNSEND CREEK 8700 .1 .2 50* .9 .6 150
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Basin wide percent of average 75* 102
BIGHORN BASIN
BALD MTN. 9375 1.5 1.1 136* 1.2 .7 171
BEAR TRAP MEADOW 7900 .1 .2 50* .4 .5 80
BLACKWATER 9780 .4 1.1 36* .7 .7 100
BONE SPRINGS DIV 9350 1.0 1.4 71* 1.3 .6 217
EVENING STAR 9200 .7 1.3 54* 1.5 .8 188
GRAVE SPRINGS 8550 .3 -M * .6 .6 100
KIRWIN 9550 .3 .6 50* .5 .5 100
LOST CREEK 8080 -M .5 * -M .6 *
MARQUETTE 8760 .7 .4 175* 1.0 .5 200
MIDDLE POWDER 7760 .6 .5 120* .7 .6 117
OWL CREEK 8975 .5 .4 125* .5 .3 167
POWDER RIVER PASS 9480 .3 .4 75* .5 .6 83
SHELL CREEK 9580 .9 1.2 75* .7 .6 117
SYLVAN LAKE 8420 1.0 1.0 100* 2.3 .8 288
SYLVAN ROAD 8120 .1 .5 20* 1.2 .6 200
TIMBER CREEK 7950 .7 .1 700* 1.0 .4 250
YOUNTS PEAK 8350 .1 .8 12* .5 .6 83
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Basin wide percent of average 81* 155
SHOSHONE RIVER
BLACKWATER 9780 .4 1.1 36* .7 .7 100
EVENING STAR 9200 .7 1.3 54* 1.5 .8 188
KIRWIN 9550 .3 .6 50* .5 .5 100
MARQUETTE 8760 .7 .4 175* 1.0 .5 200
SYLVAN LAKE 8420 1.0 1.0 100* 2.3 .8 288
SYLVAN ROAD 8120 .1 .5 20* 1.2 .6 200
YOUNTS PEAK 8350 .1 .8 12* .5 .6 83
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Basin wide percent of average 58* 171
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .2 50* .4 .5 80
BONE SPRINGS DIV 9350 1.0 1.4 71* 1.3 .6 217
BURGESS JUNCTION 7880 .4 .6 67* .8 .6 133
CLOUD PEAK RESERVOIR 9860 .1 .5 20* 1.5 .6 250
DOME LAKE 8880 .5 .7 71* 1.0 .7 143
GRAVE SPRINGS 8550 .3 -M * .6 .6 100
HANSEN SAWMILL 8760 .1 .2 50* .8 .5 160
LOST CREEK 8080 -M .5 * -M .6 *
MIDDLE POWDER 7760 .6 .5 120* .7 .6 117
POWDER RIVER PASS 9480 .3 .4 75* .5 .6 83
SUCKER CREEK 8880 .6 .5 120* .9 .6 150
TIE CREEK 6870 .0 -M * .8 .6 133
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Basin wide percent of average 74* 143
BELLE FOURCHE
BLIND PARK 6890 .1 .6 17* .6 .5 120
NORTH RAPID CREEK 6130 .1 -M * .3 -M *
WARREN PEAK 6520 .1 .6 17* .8 .4 200
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Basin wide percent of average 17* 156
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .3 0* 1.0 .7 143
DIVIDE PEAK 8800 .0 .4 0* .8 .9 89
ELK RIVER 8700 .0 .0 100* 1.2 .7 171
JOE WRIGHT 10120 .1 .7 14* .8 1.0 80
NORTH FRENCH CREEK 10100 .0 .4 0* 1.0 .7 143
OLD BATTLE 10000 .7 1.3 54* 1.7 .9 189
SOUTH BRUSH CREEK 8400 .0 .1 0* .5 .7 71
TOWER 10500 -M 1.4 * -M 1.2 *
WEBBER SPRINGS 9200 .0 .3 0* 1.2 .9 133
WILLOW CREEK PASS 9540 .0 .1 0* .2 .5 40
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Basin wide percent of average 22* 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .7 0* .2 .7 29
CASPER MTN. 7900 .4 .3 133* .6 .7 86
DEADMAN HILL 10220 .9 .3 300* .1 .7 14
DEER PARK 9700 .0 -M * .0 -M *
LAPRELE CREEK 8320 .1 .1 100* .4 .4 100
RENO HILL 8400 .3 .4 75* .5 .7 71
ROACH 9700 .0 .3 0* .5 .8 62
SAND LAKE 10080 .4 .6 67* .6 .8 75
SOUTH PASS 9040 .2 .9 22* .7 .6 117
WINDY PEAK 7840 .0 .0 100* .5 .3 167
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Basin wide percent of average 64* 72
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.5 .5 300
DIVIDE PEAK 8800 .0 .4 0* .8 .9 89
OLD BATTLE 10000 .7 1.3 54* 1.7 .9 189
SANDSTONE RS 8150 .0 .0 100* 1.4 .5 280
WHISKEY PARK 8950 .0 .4 0* 1.5 .6 250
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Basin wide percent of average 33* 203
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .5 .0 * .9 .5 180
BLIND BULL SUM 8650 .3 .0 * .8 .6 133
EAST RIM DIVIDE 7930 .0 .0 100* .1 .4 25
ELKHART PARK G.S. 9400 .8 .0 * 1.0 .5 200
GROS VENTRE SUMMIT 8775 .4 .0 * .6 .5 120
KENDALL R.S. 7740 .1 .0 * .7 .4 175
LOOMIS PARK 8240 .0 .0 100* .3 .5 60
NEW FORK LAKE 8340 .0 .0 100* .7 .4 175
SNIDER BASIN 8250 .1 .0 * .1 .4 25
SPRING CREEK DIVIDE 9000 .0 .0 100* .4 .6 67
TRIPLE PEAK 8500 .1 .0 * .8 .8 100
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Basin wide percent of average * 114
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .2 .4 50
HEWINTA 9500 .1 .1 100* 1.2 .7 171
HICKERSON PARK 9150 .0 .0 100* 1.3 .6 217
HOLE-IN-ROCK 9150 .0 .0 100* 1.2 .6 200
INDIAN CREEK 9425 .2 .0 * .4 .7 57
KELLEY R.S. 8180 .0 .0 100* .3 .5 60
STEEL CREEK PARK 10100 .4 .7 57* 1.7 .7 243
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Basin wide percent of average 63* 150
UPPER BEAR RIVER
BUG LAKE 7950 .0 .5 0* .7 1.0 70
HAYDEN FORK 9400 .0 .2 0* 1.0 .7 143
KELLEY R.S. 8180 .0 .0 100* .3 .5 60
LILY LAKE 9050 .0 .3 0* .8 .8 100
MONTE CRISTO 8960 .1 .6 17* .6 1.0 60
SALT RIVER SUMMIT 7600 .2 .0 * 1.5 .5 300
TRIAL LAKE 9960 .1 .6 17* .7 .8 88
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Basin wide percent of average 9* 106
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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.