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 16 , 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* .3 1.0 30
COTTONWOOD CREEK 7600 .3 .0 * 2.2 1.1 200
GRANITE CREEK 6770 .1 .0 * .2 1.1 18
GRASSY LAKE 7265 .0 .1 0* .1 1.6 6
GROS VENTRE SUMMIT 8775 .1 .1 100* .8 .8 100
LEWIS LAKE DIVIDE 7860 .0 .1 0* .1 1.6 6
PHILLIPS BENCH 8200 .0 .1 0* .4 1.3 31
SALT RIVER SUMMIT 7600 .1 .0 * 1.2 .8 150
SNAKE RIVER STATION 6920 .0 .0 100* .2 1.1 18
SPRING CREEK DIVIDE 9000 .3 .1 300* 1.3 1.0 130
THUMB DIVIDE 7980 .2 .0 * .1 .9 11
TOGWOTEE PASS 9580 .8 1.1 73* 1.0 1.2 83
TWO OCEAN PLATEAU 9360 .7 1.4 50* 1.1 1.4 79
WILLOW CREEK 8450 .4 .1 400* 2.0 1.4 143
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Basin wide percent of average 74* 67
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .9 1.6 56* .7 .9 78
BLACK BEAR 7950 .1 1.3 8* .3 1.7 18
CANYON 7940 .0 .2 0* .1 .9 11
FISHER CREEK 9100 .3 1.0 30* .7 1.5 47
MADISON PLATEAU 7750 .1 .6 17* .2 1.2 17
NORTHEAST ENTRANCE 7350 .0 .0 100* .4 .7 57
PARKER PEAK 9400 .0 1.8 0* .9 1.1 82
SYLVAN LAKE 8420 .1 1.2 8* .9 1.3 69
THUMB DIVIDE 7980 .2 .0 * .1 .9 11
TWO OCEAN PLATEAU 9360 .7 1.4 50* 1.1 1.4 79
WHISKEY CREEK 6800 .1 .2 50* .1 1.1 9
WHITE MILL 8700 .0 .9 0* .4 1.3 31
WOLVERINE 7650 .2 .1 200* 1.1 .8 138
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Basin wide percent of average 24* 47
WIND RIVER
BURROUGHS CREEK 8750 .5 .3 167* .8 .8 100
COLD SPRINGS 9630 .4 .3 133* 1.3 .9 144
DEER PARK 9700 .9 -M * 1.8 -M *
HOBBS PARK 10100 2.3 .9 256* 2.9 1.0 290
LITTLE WARM 9620 .2 .4 50* 1.0 .9 111
SOUTH PASS 9040 .3 1.4 21* 1.4 1.1 127
ST. LAWRENCE ALT 8620 .5 .3 167* 2.0 .8 250
TOGWOTEE PASS 9580 .8 1.1 73* 1.0 1.2 83
TOWNSEND CREEK 8700 .9 .3 300* 2.3 .9 256
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Basin wide percent of average 118* 167
BIGHORN BASIN
BALD MTN. 9375 1.9 1.5 127* 2.0 1.1 182
BEAR TRAP MEADOW 7900 .2 .2 100* 1.1 .8 138
BLACKWATER 9780 1.4 1.4 100* 1.6 1.2 133
BONE SPRINGS DIV 9350 1.2 1.8 67* 1.7 1.1 155
EVENING STAR 9200 .1 1.8 6* .5 1.4 36
GRAVE SPRINGS 8550 .0 -M * 1.5 .9 167
KIRWIN 9550 1.3 .7 186* 1.5 .8 188
MARQUETTE 8760 1.3 .5 260* 1.8 .9 200
MIDDLE POWDER 7760 .1 .6 17* 2.0 1.0 200
OWL CREEK 8975 -M .4 * 1.6 .5 320
POWDER RIVER PASS 9480 .2 .5 40* 1.2 .9 133
SHELL CREEK 9580 1.4 1.6 88* 1.1 .9 122
SYLVAN LAKE 8420 .1 1.2 8* .9 1.3 69
SYLVAN ROAD 8120 .0 .7 0* .3 1.1 27
TIMBER CREEK 7950 .8 .1 800* 1.8 .6 300
YOUNTS PEAK 8350 .8 1.1 73* .7 .9 78
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Basin wide percent of average 79* 138
SHOSHONE RIVER
BLACKWATER 9780 1.4 1.4 100* 1.6 1.2 133
EVENING STAR 9200 .1 1.8 6* .5 1.4 36
KIRWIN 9550 1.3 .7 186* 1.5 .8 188
MARQUETTE 8760 1.3 .5 260* 1.8 .9 200
SYLVAN LAKE 8420 .1 1.2 8* .9 1.3 69
SYLVAN ROAD 8120 .0 .7 0* .3 1.1 27
YOUNTS PEAK 8350 .8 1.1 73* .7 .9 78
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Basin wide percent of average 68* 96
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .2 100* 1.1 .8 138
BONE SPRINGS DIV 9350 1.2 1.8 67* 1.7 1.1 155
BURGESS JUNCTION 7880 .2 .8 25* 1.4 1.0 140
CLOUD PEAK RESERVOIR 9860 .2 .6 33* 2.0 1.0 200
DOME LAKE 8880 .2 1.0 20* 1.4 1.1 127
GRAVE SPRINGS 8550 .0 -M * 1.5 .9 167
HANSEN SAWMILL 8760 .2 .3 67* .9 .8 112
MIDDLE POWDER 7760 .1 .6 17* 2.0 1.0 200
POWDER RIVER PASS 9480 .2 .5 40* 1.2 .9 133
SUCKER CREEK 8880 .3 .6 50* 1.4 1.1 127
TIE CREEK 6870 .2 -M * -M .9 *
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Basin wide percent of average 44* 151
BELLE FOURCHE
BLIND PARK 6890 .0 .8 0* 3.2 .9 356
NORTH RAPID CREEK 6130 .0 -M * 4.2 -M *
WARREN PEAK 6520 .0 .8 0* 3.8 .7 543
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Basin wide percent of average 0* 438
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .6 0* 2.0 1.2 167
DIVIDE PEAK 8800 -M .7 * -M 1.5 *
ELK RIVER 8700 .0 .0 100* 3.8 1.1 345
JOE WRIGHT 10120 .1 1.2 8* 3.4 1.7 200
NORTH FRENCH CREEK 10100 1.6 .7 229* 3.6 1.1 327
OLD BATTLE 10000 1.2 1.9 63* 3.3 1.5 220
SOUTH BRUSH CREEK 8400 .5 .1 500* -M 1.1 *
TOWER 10500 .5 2.3 22* 3.2 1.9 168
WEBBER SPRINGS 9200 .0 .6 0* 2.4 1.5 160
WILLOW CREEK PASS 9540 -M .3 * 1.6 .9 178
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Basin wide percent of average 53* 214
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 1.0 0* .1 1.2 8
CASPER MTN. 7900 .1 .5 20* 2.2 1.2 183
DEADMAN HILL 10220 .5 .5 100* 1.7 1.2 142
DEER PARK 9700 .9 -M * 1.8 -M *
LAPRELE CREEK 8320 .0 .1 0* 2.5 .7 357
RENO HILL 8400 1.1 .7 157* 2.9 1.2 242
ROACH 9700 .0 .5 0* 1.4 1.3 108
SAND LAKE 10080 2.3 1.0 230* 4.4 1.3 338
SOUTH PASS 9040 .3 1.4 21* 1.4 1.1 127
WINDY PEAK 7840 .0 .0 100* 2.7 .6 450
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Basin wide percent of average 75* 197
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.2 .9 244
DIVIDE PEAK 8800 -M .7 * -M 1.5 *
OLD BATTLE 10000 1.2 1.9 63* 3.3 1.5 220
SANDSTONE RS 8150 .0 .0 100* 3.1 .8 388
WHISKEY PARK 8950 .0 .7 0* 3.5 .9 389
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Basin wide percent of average 46* 295
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.2 .0 * 1.6 .8 200
BLIND BULL SUM 8650 .3 .1 300* .9 1.0 90
EAST RIM DIVIDE 7930 .0 .0 100* .4 .7 57
ELKHART PARK G.S. 9400 .2 .1 200* .8 .8 100
GROS VENTRE SUMMIT 8775 .1 .1 100* .8 .8 100
KENDALL R.S. 7740 .1 .0 * .5 .7 71
LOOMIS PARK 8240 .2 .0 * .7 .9 78
NEW FORK LAKE 8340 .2 .0 * .3 .7 43
SNIDER BASIN 8250 .1 .0 * .7 .7 100
SPRING CREEK DIVIDE 9000 .3 .1 300* 1.3 1.0 130
TRIPLE PEAK 8500 .1 .1 100* 1.1 1.4 79
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Basin wide percent of average 200* 96
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .6 217
HEWINTA 9500 .3 .1 300* 1.4 1.2 117
HICKERSON PARK 9150 .9 .0 * 1.0 1.0 100
HOLE-IN-ROCK 9150 .7 .0 * 2.0 1.0 200
INDIAN CREEK 9425 .7 .1 700* 1.2 1.1 109
KELLEY R.S. 8180 .0 .0 100* 1.1 .9 122
STEEL CREEK PARK 10100 .0 .9 0* 1.7 1.2 142
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Basin wide percent of average 91* 139
UPPER BEAR RIVER
BUG LAKE 7950 .3 .6 50* 1.8 1.6 112
HAYDEN FORK 9400 .3 .3 100* 1.1 1.2 92
KELLEY R.S. 8180 .0 .0 100* 1.1 .9 122
LILY LAKE 9050 .7 .4 175* 2.0 1.3 154
MONTE CRISTO 8960 .1 .7 14* 1.9 1.7 112
SALT RIVER SUMMIT 7600 .1 .0 * 1.2 .8 150
TRIAL LAKE 9960 .1 .8 12* 1.0 1.4 71
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Basin wide percent of average 54* 113
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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.