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 WEDNESDAY: OCTOBER 18 , 2000
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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 .7 .1 700* 2.0 1.1 182
COTTONWOOD CREEK 7600 1.2 .1 1200* 1.8 1.2 150
GRANITE CREEK 6770 .6 .1 600* 2.0 1.3 154
GRASSY LAKE 7265 2.1 .2 1050* 3.0 1.8 167
GROS VENTRE SUMMIT 8775 1.2 .2 600* 1.2 .9 133
LEWIS LAKE DIVIDE 7860 1.8 .2 900* 3.3 1.9 174
PHILLIPS BENCH 8200 2.2 .2 1100* 2.4 1.4 171
SALT RIVER SUMMIT 7600 .2 .0 * 1.8 .9 200
SNAKE RIVER STATION 6920 .7 .1 700* 3.1 1.3 238
SPRING CREEK DIVIDE 9000 1.6 .2 800* 1.9 1.2 158
THUMB DIVIDE 7980 .6 .1 600* 2.0 1.0 200
TOGWOTEE PASS 9580 1.8 1.2 150* 1.8 1.4 129
TWO OCEAN PLATEAU 9360 2.4 1.7 141* 2.4 1.5 160
WILLOW CREEK 8450 1.5 .2 750* 2.5 1.5 167
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Basin wide percent of average 400* 170
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.8 1.8 100* 1.8 1.0 180
BLACK BEAR 7950 3.1 1.5 207* 4.1 1.9 216
CANYON 7940 .8 .3 267* 1.7 1.0 170
FISHER CREEK 9100 2.1 1.2 175* 3.0 1.6 188
MADISON PLATEAU 7750 1.9 .7 271* 3.0 1.4 214
NORTHEAST ENTRANCE 7350 .0 .1 -0* 1.5 .8 188
PARKER PEAK 9400 1.1 2.1 52* 2.3 1.2 192
SYLVAN LAKE 8420 1.6 1.3 123* 3.0 1.4 214
THUMB DIVIDE 7980 .6 .1 600* 2.0 1.0 200
TWO OCEAN PLATEAU 9360 2.4 1.7 141* 2.4 1.5 160
WHISKEY CREEK 6800 1.2 .3 400* 2.6 1.2 217
WHITE MILL 8700 1.4 1.0 140* 2.4 1.5 160
WOLVERINE 7650 .0 .1 0* 1.4 .9 156
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Basin wide percent of average 148* 190
WIND RIVER
BURROUGHS CREEK 8750 .4 .4 100* .7 .9 78
COLD SPRINGS 9630 .1 .4 25* .3 1.0 30
DEER PARK 9700 1.8 -M * 1.7 -M *
HOBBS PARK 10100 .9 1.0 90* .6 1.1 55
LITTLE WARM 9620 .7 .5 140* .7 1.0 70
SOUTH PASS 9040 1.0 1.5 67* 1.1 1.2 92
ST. LAWRENCE ALT 8620 .1 .4 25* .2 .9 22
TOGWOTEE PASS 9580 1.8 1.2 150* 1.8 1.4 129
TOWNSEND CREEK 8700 .1 .4 25* .7 1.0 70
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Basin wide percent of average 88* 72
BIGHORN BASIN
BALD MTN. 9375 .8 1.6 50* 1.4 1.3 108
BEAR TRAP MEADOW 7900 .0 .3 0* .5 .9 56
BLACKWATER 9780 2.2 1.5 147* 2.1 1.3 162
BONE SPRINGS DIV 9350 .9 1.9 47 1.7 1.2 142
EVENING STAR 9200 1.3 2.1 62* 3.4 1.6 212
GRAVE SPRINGS 8550 .3 .6 50* .6 1.0 60
KIRWIN 9550 .7 .8 87* 1.3 .9 144
MARQUETTE 8760 .2 .6 33* 1.2 1.0 120
MIDDLE POWDER 7760 .2 .7 29* .6 1.2 50
OWL CREEK 8975 .1 .4 25* .4 .5 80
POWDER RIVER PASS 9480 .3 .6 50* 1.4 1.0 140
SHELL CREEK 9580 1.5 1.7 88* 1.4 1.0 140
SYLVAN LAKE 8420 1.6 1.3 123* 3.0 1.4 214
SYLVAN ROAD 8120 .7 .8 87* 2.7 1.2 225
TIMBER CREEK 7950 .1 .1 100* .8 .7 114
YOUNTS PEAK 8350 1.3 1.2 108* 2.2 1.0 220
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Basin wide percent of average 75* 144
SHOSHONE RIVER
BLACKWATER 9780 2.2 1.5 147* 2.1 1.3 162
EVENING STAR 9200 1.3 2.1 62* 3.4 1.6 212
KIRWIN 9550 .7 .8 87* 1.3 .9 144
MARQUETTE 8760 .2 .6 33* 1.2 1.0 120
SYLVAN LAKE 8420 1.6 1.3 123* 3.0 1.4 214
SYLVAN ROAD 8120 .7 .8 87* 2.7 1.2 225
YOUNTS PEAK 8350 1.3 1.2 108* 2.2 1.0 220
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Basin wide percent of average 96* 189
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .3 0* .5 .9 56
BIG GOOSE 7990 .4 -M * 1.0 -M *
BONE SPRINGS DIV 9350 .9 1.9 47 1.7 1.2 142
BURGESS JUNCTION 7880 .7 .9 78* .9 1.1 82
CLOUD PEAK RESERVOIR 9860 .4 .7 57* 1.6 1.2 133
DOME LAKE 8880 .8 1.1 73* 1.4 1.3 108
GRAVE SPRINGS 8550 .3 .6 50* .6 1.0 60
HANSEN SAWMILL 8760 .3 .4 75* 1.1 .9 122
MIDDLE POWDER 7760 .2 .7 29* .6 1.2 50
POWDER RIVER PASS 9480 .3 .6 50* 1.4 1.0 140
SUCKER CREEK 8880 .1 .7 14* .8 1.2 67
TIE CREEK 6870 .1 -M * 1.1 1.0 110
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Basin wide percent of average 51* 98
BELLE FOURCHE
BLIND PARK 6890 .0 .9 0* .3 1.0 30
COLE CANYON 5910 .1 .9 11* .9 .8 112
NORTH RAPID CREEK 6130 .0 -M * .5 -M *
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Basin wide percent of average 6* 67
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .7 0* .3 1.4 21
DIVIDE PEAK 8800 .4 .9 44* 1.6 1.7 94
ELK RIVER 8700 .1 .1 100* .2 1.3 15
JOE WRIGHT 10120 .0 1.5 0* .1 1.9 5
NORTH FRENCH CREEK 10100 .6 .9 67* .4 1.3 31
OLD BATTLE 10000 .6 2.1 29* .8 1.8 44
SOUTH BRUSH CREEK 8400 .1 .2 50* .3 1.3 23
TOWER 10500 .3 2.8 11* .6 2.2 27
WEBBER SPRINGS 9200 .0 .7 0* .4 1.6 25
WILLOW CREEK PASS 9540 .0 .4 0* .2 1.0 20
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Basin wide percent of average 20* 32
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 1.1 9* .2 1.3 15
CASPER MTN. 7900 .5 .6 83* .6 1.4 43
DEADMAN HILL 10220 1.0 .6 167* .0 1.3 0
DEER PARK 9700 1.8 -M * 1.7 -M *
LAPRELE CREEK 8320 .3 .2 150* .4 .8 50
RENO HILL 8400 .0 .8 0* .3 1.4 21
ROACH 9700 .0 .6 -0* .1 1.5 7
SAND LAKE 10080 .3 1.3 23* .5 1.4 36
SOUTH PASS 9040 1.0 1.5 67* 1.1 1.2 92
WINDY PEAK 7840 .0 .0 100* .3 .7 43
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Basin wide percent of average 48* 32
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .1 -0* .6 1.0 60
DIVIDE PEAK 8800 .4 .9 44* 1.6 1.7 94
OLD BATTLE 10000 .6 2.1 29* .8 1.8 44
SANDSTONE RS 8150 .1 .1 100* .8 .9 89
WHISKEY PARK 8950 .0 .9 0* .4 1.0 40
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Basin wide percent of average 27* 66
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.8 .1 1800* 1.9 .9 211
BLIND BULL SUM 8650 1.7 .4 425* 1.9 1.1 173
EAST RIM DIVIDE 7930 1.0 .1 1000* 1.3 .8 162
ELKHART PARK G.S. 9400 1.8 .2 900* 1.9 .9 211
GROS VENTRE SUMMIT 8775 1.2 .2 600* 1.2 .9 133
KENDALL R.S. 7740 .8 .0 * 1.4 .8 175
LOOMIS PARK 8240 1.5 .1 1500* 1.7 1.0 170
NEW FORK LAKE 8340 .9 .0 * 1.3 .8 162
SNIDER BASIN 8250 .7 .0 * 1.0 .8 125
SPRING CREEK DIVIDE 9000 1.6 .2 800* 1.9 1.2 158
TRIPLE PEAK 8500 1.2 .2 600* 2.0 1.5 133
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Basin wide percent of average 787* 164
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 1.1 .7 157
HEWINTA 9500 -M .1 * 1.3 1.3 100
HICKERSON PARK 9150 .1 .0 * 1.2 1.2 100
HOLE-IN-ROCK 9150 .0 .0 100* 1.3 1.2 108
INDIAN CREEK 9425 1.8 .3 600* 1.8 1.3 138
KELLEY R.S. 8180 1.1 .1 1100* 1.5 1.0 150
STEEL CREEK PARK 10100 1.2 1.0 120* 1.3 1.3 100
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Basin wide percent of average 293* 119
UPPER BEAR RIVER
BUG LAKE 7950 .8 .7 114* 1.3 1.8 72
HAYDEN FORK 9400 .0 .4 0* 1.5 1.4 107
KELLEY R.S. 8180 1.1 .1 1100* 1.5 1.0 150
LILY LAKE 9050 .4 .5 80* 1.4 1.5 93
MONTE CRISTO 8960 .7 .8 87* 1.7 1.9 89
SALT RIVER SUMMIT 7600 .2 .0 * 1.8 .9 200
TRIAL LAKE 9960 .7 .9 78* 1.7 1.6 106
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Basin wide percent of average 109* 108
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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.