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 18 , 2001
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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 .6 .1 600* 1.6 1.1 145
COTTONWOOD CREEK 7600 .7 .1 700* 1.3 1.2 108
GRANITE CREEK 6770 .3 .1 300* 1.5 1.3 115
GRASSY LAKE 7265 1.7 .2 850* 2.2 1.8 122
GROS VENTRE SUMMIT 8775 1.0 .2 500* .6 .9 67
LEWIS LAKE DIVIDE 7860 1.6 .2 800* 1.9 1.9 100
PHILLIPS BENCH 8200 1.7 .2 850* 1.7 1.4 121
SALT RIVER SUMMIT 7600 .1 .0 * .8 .9 89
SNAKE RIVER STATION 6920 .9 .1 900* 1.5 1.3 115
SPRING CREEK DIVIDE 9000 1.8 .2 900* 1.9 1.2 158
THUMB DIVIDE 7980 .9 .1 900* 1.0 1.0 100
TOGWOTEE PASS 9580 2.2 1.2 183* 2.4 1.4 171
TWO OCEAN PLATEAU 9360 1.9 1.7 112* 1.6 1.5 107
WILLOW CREEK 8450 .3 .2 150* 1.4 1.5 93
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Basin wide percent of average 339* 116
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.9 1.8 106* 1.8 1.0 180
BLACK BEAR 7950 -M 1.5 * -M 1.9 *
CANYON 7940 .9 .3 300* 1.2 1.0 120
FISHER CREEK 9100 1.9 1.2 158* 2.1 1.6 131
MADISON PLATEAU 7750 1.5 .7 214* 2.1 1.4 150
NORTHEAST ENTRANCE 7350 .2 .1 200* .8 .8 100
PARKER PEAK 9400 1.2 2.1 57* 1.1 1.2 92
SYLVAN LAKE 8420 2.0 1.3 154* 2.2 1.4 157
THUMB DIVIDE 7980 .9 .1 900* 1.0 1.0 100
TWO OCEAN PLATEAU 9360 1.9 1.7 112* 1.6 1.5 107
WHISKEY CREEK 6800 1.4 .3 467* 1.4 1.2 117
WHITE MILL 8700 1.6 1.0 160* 1.5 1.5 100
WOLVERINE 7650 .4 .1 400* 1.4 .9 156
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Basin wide percent of average 148* 126
WIND RIVER
BURROUGHS CREEK 8750 1.2 .4 300* 1.3 .9 144
COLD SPRINGS 9630 -M .4 * -M 1.0 *
DEER PARK 9700 .9 -M * 1.0 -M *
HOBBS PARK 10100 .8 1.0 80* .8 1.1 73
LITTLE WARM 9620 1.1 .5 220* 1.2 1.0 120
SOUTH PASS 9040 .4 1.5 27* 1.1 1.2 92
ST. LAWRENCE ALT 8620 .2 .4 50* .3 .9 33
TOGWOTEE PASS 9580 2.2 1.2 183* 2.4 1.4 171
TOWNSEND CREEK 8700 .2 .4 50* .4 1.0 40
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Basin wide percent of average 113* 100
BIGHORN BASIN
BALD MTN. 9375 2.6 1.6 162* 2.5 1.3 192
BEAR TRAP MEADOW 7900 1.1 .3 367* 1.8 .9 200
BLACKWATER 9780 1.3 1.5 87* 1.2 1.3 92
BONE SPRINGS DIV 9350 2.4 1.9 126 2.5 1.2 208
EVENING STAR 9200 1.8 2.1 86* 2.5 1.6 156
GRAVE SPRINGS 8550 1.2 .6 200* 2.4 1.0 240
KIRWIN 9550 1.2 .8 150* 1.2 .9 133
MARQUETTE 8760 .5 .6 83* .7 1.0 70
MIDDLE POWDER 7760 1.5 .7 214* 2.0 1.2 167
OWL CREEK 8975 .1 .4 25* .4 .5 80
POWDER RIVER PASS 9480 1.2 .6 200* 2.1 1.0 210
SHELL CREEK 9580 2.6 1.7 153* 2.4 1.0 240
SYLVAN LAKE 8420 2.0 1.3 154* 2.2 1.4 157
SYLVAN ROAD 8120 1.0 .8 125* 1.9 1.2 158
TIMBER CREEK 7950 .3 .1 300* .9 .7 129
YOUNTS PEAK 8350 1.4 1.2 117* 1.3 1.0 130
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Basin wide percent of average 137* 163
SHOSHONE RIVER
BLACKWATER 9780 1.3 1.5 87* 1.2 1.3 92
EVENING STAR 9200 1.8 2.1 86* 2.5 1.6 156
KIRWIN 9550 1.2 .8 150* 1.2 .9 133
MARQUETTE 8760 .5 .6 83* .7 1.0 70
SYLVAN LAKE 8420 2.0 1.3 154* 2.2 1.4 157
SYLVAN ROAD 8120 1.0 .8 125* 1.9 1.2 158
YOUNTS PEAK 8350 1.4 1.2 117* 1.3 1.0 130
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Basin wide percent of average 111* 131
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.1 .3 367* 1.8 .9 200
BIG GOOSE 7990 1.2 -M * 2.6 -M *
BONE SPRINGS DIV 9350 2.4 1.9 126 2.5 1.2 208
BURGESS JUNCTION 7880 1.2 .9 133* 2.3 1.1 209
CLOUD PEAK RESERVOIR 9860 1.5 .7 214* 3.0 1.2 250
DOME LAKE 8880 1.8 1.1 164* 2.7 1.3 208
GRAVE SPRINGS 8550 1.2 .6 200* 2.4 1.0 240
HANSEN SAWMILL 8760 .4 .4 100* 1.5 .9 167
MIDDLE POWDER 7760 1.5 .7 214* 2.0 1.2 167
POWDER RIVER PASS 9480 1.2 .6 200* 2.1 1.0 210
SUCKER CREEK 8880 1.9 .7 271* 3.1 1.2 258
TIE CREEK 6870 .2 -M * 2.3 1.0 230
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Basin wide percent of average 180* 214
BELLE FOURCHE
BLIND PARK 6890 .3 .9 33* 2.1 1.0 210
COLE CANYON 5910 .0 .2 0* 1.1 .8 138
NORTH RAPID CREEK 6130 .5 -M * 1.9 -M *
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Basin wide percent of average 27* 178
UPPER N. PLATTE RIVER
COLUMBINE 9400 .3 .7 43* 2.1 1.4 150
DIVIDE PEAK 8800 .9 .9 100* 2.0 1.7 118
ELK RIVER 8700 .1 .1 100* 1.4 1.3 108
JOE WRIGHT 10120 .7 1.5 47* 1.7 1.9 89
NORTH FRENCH CREEK 10100 2.8 .9 311* 2.7 1.3 208
OLD BATTLE 10000 1.2 2.1 57* 2.2 1.8 122
SOUTH BRUSH CREEK 8400 .2 .2 100* 1.5 1.3 115
TOWER 10500 2.1 2.8 75* 2.3 2.2 105
WEBBER SPRINGS 9200 .7 .7 100* 1.6 1.6 100
WILLOW CREEK PASS 9540 .0 .4 0* .8 1.0 80
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Basin wide percent of average 87* 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.8 1.1 164* 2.2 1.3 169
CASPER MTN. 7900 2.4 .6 400* 3.0 1.4 214
DEADMAN HILL 10220 .6 .6 100* 1.1 1.3 85
DEER PARK 9700 .9 -M * 1.0 -M *
LAPRELE CREEK 8320 -M .2 * 2.8 .8 350
RENO HILL 8400 2.3 .8 287* 3.1 1.4 221
ROACH 9700 .3 .6 50* .9 1.5 60
SAND LAKE 10080 3.0 1.3 231* 2.9 1.4 207
SOUTH PASS 9040 .4 1.5 27* 1.1 1.2 92
WINDY PEAK 7840 .6 .0 * 2.7 .7 386
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Basin wide percent of average 166* 180
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .1 200* 1.6 1.0 160
DIVIDE PEAK 8800 .9 .9 100* 2.0 1.7 118
OLD BATTLE 10000 1.2 2.1 57* 2.2 1.8 122
SANDSTONE RS 8150 -M .1 * 2.0 .9 222
WHISKEY PARK 8950 1.0 .9 111* 2.1 1.0 210
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Basin wide percent of average 82* 155
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .1 900* .6 .9 67
BLIND BULL SUM 8650 2.0 .4 500* 1.6 1.1 145
EAST RIM DIVIDE 7930 .6 .1 600* .6 .8 75
ELKHART PARK G.S. 9400 .7 .2 350* .7 .9 78
GROS VENTRE SUMMIT 8775 1.0 .2 500* .6 .9 67
KENDALL R.S. 7740 .0 .0 100* .8 .8 100
LOOMIS PARK 8240 1.2 .1 1200* 1.2 1.0 120
NEW FORK LAKE 8340 .6 .0 * .7 .8 87
SNIDER BASIN 8250 1.0 .0 * 1.4 .8 175
SPRING CREEK DIVIDE 9000 1.8 .2 900* 1.9 1.2 158
TRIPLE PEAK 8500 1.5 .2 750* 2.1 1.5 140
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Basin wide percent of average 647* 114
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .2 .7 29
HEWINTA 9500 .0 .1 0* 1.2 1.3 92
HICKERSON PARK 9150 .1 .0 * .6 1.2 50
HOLE-IN-ROCK 9150 .0 .0 100* 1.3 1.2 108
INDIAN CREEK 9425 .8 .3 267* .7 1.3 54
KELLEY R.S. 8180 .2 .1 200* .5 1.0 50
STEEL CREEK PARK 10100 .8 1.0 80* 1.0 1.3 77
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Basin wide percent of average 120* 69
UPPER BEAR RIVER
BUG LAKE 7950 .0 .7 0* .4 1.8 22
HAYDEN FORK 9400 .0 .4 0* 1.0 1.4 71
KELLEY R.S. 8180 .2 .1 200* .5 1.0 50
LILY LAKE 9050 .0 .5 0* 1.1 1.5 73
MONTE CRISTO 8960 -M .8 * .6 1.9 32
SALT RIVER SUMMIT 7600 .1 .0 * .8 .9 89
TRIAL LAKE 9960 .0 .9 0* 1.2 1.6 75
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Basin wide percent of average 8* 55
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-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.
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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.