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 17 , 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* 1.4 1.0 140
COTTONWOOD CREEK 7600 1.0 .1 1000* 1.2 1.1 109
GRANITE CREEK 6770 .6 .1 600* 1.4 1.2 117
GRASSY LAKE 7265 1.7 .1 1700* 2.1 1.7 124
GROS VENTRE SUMMIT 8775 .9 .1 900* .5 .8 62
LEWIS LAKE DIVIDE 7860 1.6 .2 800* 1.8 1.8 100
PHILLIPS BENCH 8200 1.7 .1 1700* 1.6 1.3 123
SALT RIVER SUMMIT 7600 .2 .0 * .8 .9 89
SNAKE RIVER STATION 6920 .9 .1 900* 1.4 1.2 117
SPRING CREEK DIVIDE 9000 1.7 .2 850* 1.7 1.1 155
THUMB DIVIDE 7980 .9 .1 900* 1.0 1.0 100
TOGWOTEE PASS 9580 2.2 1.2 183* 2.2 1.3 169
TWO OCEAN PLATEAU 9360 1.8 1.6 112* 1.4 1.4 100
WILLOW CREEK 8450 .4 .1 400* 1.4 1.4 100
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Basin wide percent of average 390* 116
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.8 1.7 106* 2.0 1.0 200
BLACK BEAR 7950 2.8 1.4 200* 3.2 1.8 178
CANYON 7940 .9 .3 300* 1.2 .9 133
FISHER CREEK 9100 2.0 1.1 182* 2.3 1.5 153
MADISON PLATEAU 7750 1.5 .6 250* 2.0 1.3 154
NORTHEAST ENTRANCE 7350 .4 .0 * .8 .8 100
PARKER PEAK 9400 1.2 1.9 63* 1.1 1.1 100
SYLVAN LAKE 8420 2.0 1.3 154* 2.2 1.3 169
THUMB DIVIDE 7980 .9 .1 900* 1.0 1.0 100
TWO OCEAN PLATEAU 9360 1.8 1.6 112* 1.4 1.4 100
WHISKEY CREEK 6800 -M .3 * -M 1.1 *
WHITE MILL 8700 1.6 .9 178* 1.4 1.4 100
WOLVERINE 7650 .6 .1 600* 1.4 .8 175
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Basin wide percent of average 155* 140
WIND RIVER
BURROUGHS CREEK 8750 1.1 .4 275* 1.3 .8 162
COLD SPRINGS 9630 .2 .4 50* .4 1.0 40
DEER PARK 9700 .9 -M * 1.0 -M *
HOBBS PARK 10100 .8 1.0 80* .7 1.0 70
LITTLE WARM 9620 1.0 .5 200* 1.2 .9 133
SOUTH PASS 9040 .6 1.5 40* 1.1 1.1 100
ST. LAWRENCE ALT 8620 .2 .4 50* .3 .9 33
TOGWOTEE PASS 9580 2.2 1.2 183* 2.2 1.3 169
TOWNSEND CREEK 8700 .3 .4 75* -M 1.0 *
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Basin wide percent of average 110* 103
BIGHORN BASIN
BALD MTN. 9375 2.3 1.5 153* 2.4 1.2 200
BEAR TRAP MEADOW 7900 1.2 .3 400* 1.7 .8 212
BLACKWATER 9780 1.2 1.4 86* .9 1.2 75
BONE SPRINGS DIV 9350 2.3 1.8 128* 2.4 1.1 218
EVENING STAR 9200 1.4 1.9 74* 2.3 1.5 153
GRAVE SPRINGS 8550 1.3 .6 217* 2.4 1.0 240
KIRWIN 9550 1.1 .8 138* 1.1 .8 138
MARQUETTE 8760 .6 .6 100* 1.1 .9 122
MIDDLE POWDER 7760 1.8 .7 257* 2.1 1.1 191
OWL CREEK 8975 .2 .4 50* .4 .5 80
POWDER RIVER PASS 9480 1.0 .6 167* 1.9 1.0 190
SHELL CREEK 9580 2.3 1.6 144* 2.3 1.0 230
SYLVAN LAKE 8420 2.0 1.3 154* 2.2 1.3 169
SYLVAN ROAD 8120 1.0 .7 143* 1.9 1.1 173
TIMBER CREEK 7950 .3 .1 300* .8 .7 114
YOUNTS PEAK 8350 1.2 1.2 100* 1.0 1.0 100
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Basin wide percent of average 137* 166
SHOSHONE RIVER
BLACKWATER 9780 1.2 1.4 86* .9 1.2 75
EVENING STAR 9200 1.4 1.9 74* 2.3 1.5 153
KIRWIN 9550 1.1 .8 138* 1.1 .8 138
MARQUETTE 8760 .6 .6 100* 1.1 .9 122
SYLVAN LAKE 8420 2.0 1.3 154* 2.2 1.3 169
SYLVAN ROAD 8120 1.0 .7 143* 1.9 1.1 173
YOUNTS PEAK 8350 1.2 1.2 100* 1.0 1.0 100
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Basin wide percent of average 108* 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.2 .3 400* 1.7 .8 212
BIG GOOSE 7990 1.2 -M * 2.4 -M *
BONE SPRINGS DIV 9350 2.3 1.8 128* 2.4 1.1 218
BURGESS JUNCTION 7880 1.2 .8 150* 2.2 1.0 220
CLOUD PEAK RESERVOIR 9860 1.2 .7 171* 2.5 1.1 227
DOME LAKE 8880 1.6 1.0 160* 2.5 1.2 208
GRAVE SPRINGS 8550 1.3 .6 217* 2.4 1.0 240
HANSEN SAWMILL 8760 .2 .4 50* 1.3 .8 162
MIDDLE POWDER 7760 1.8 .7 257* 2.1 1.1 191
POWDER RIVER PASS 9480 1.0 .6 167* 1.9 1.0 190
SUCKER CREEK 8880 1.7 .7 243* 3.0 1.1 273
TIE CREEK 6870 .4 -M * 2.1 1.0 210
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Basin wide percent of average 178* 215
BELLE FOURCHE
BLIND PARK 6890 .4 .9 44* 1.9 .9 211
COLE CANYON 5910 .0 .1 0* .9 .7 129
NORTH RAPID CREEK 6130 .3 -M * 1.6 -M *
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Basin wide percent of average 40* 175
UPPER N. PLATTE RIVER
COLUMBINE 9400 .3 .6 50* 2.1 1.3 162
DIVIDE PEAK 8800 1.0 .8 125* 2.0 1.6 125
ELK RIVER 8700 .1 .0 * 1.4 1.2 117
JOE WRIGHT 10120 .7 1.3 54* 1.6 1.8 89
NORTH FRENCH CREEK 10100 2.9 .8 362* 2.6 1.2 217
OLD BATTLE 10000 1.2 2.0 60* 2.2 1.7 129
SOUTH BRUSH CREEK 8400 .2 .1 200* 1.4 1.2 117
TOWER 10500 2.2 2.6 85* 2.3 2.1 110
WEBBER SPRINGS 9200 .9 .7 129* 1.6 1.5 107
WILLOW CREEK PASS 9540 .0 .3 0* .5 .9 56
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Basin wide percent of average 102* 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.9 1.0 190* 2.2 1.2 183
CASPER MTN. 7900 2.6 .5 520* 3.0 1.3 231
DEADMAN HILL 10220 .6 .5 120* 1.1 1.2 92
DEER PARK 9700 .9 -M * 1.0 -M *
LAPRELE CREEK 8320 -M .2 * -M .8 *
RENO HILL 8400 2.4 .7 343* 3.1 1.3 238
ROACH 9700 .5 .5 100* .9 1.4 64
SAND LAKE 10080 3.0 1.2 250* 2.9 1.3 223
SOUTH PASS 9040 .6 1.5 40* 1.1 1.1 100
WINDY PEAK 7840 .8 .0 * 2.6 .6 433
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Basin wide percent of average 197* 180
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * 1.5 .9 167
DIVIDE PEAK 8800 1.0 .8 125* 2.0 1.6 125
OLD BATTLE 10000 1.2 2.0 60* 2.2 1.7 129
SANDSTONE RS 8150 .0 .1 0* 1.9 .9 211
WHISKEY PARK 8950 1.0 .8 125* 2.0 1.0 200
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Basin wide percent of average 86* 157
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .1 900* .5 .8 62
BLIND BULL SUM 8650 1.9 .3 633* 1.3 1.0 130
EAST RIM DIVIDE 7930 .7 .0 * .5 .8 62
ELKHART PARK G.S. 9400 .8 .1 800* .6 .8 75
GROS VENTRE SUMMIT 8775 .9 .1 900* .5 .8 62
KENDALL R.S. 7740 .2 .0 * .6 .8 75
LOOMIS PARK 8240 1.2 .1 1200* 1.2 .9 133
NEW FORK LAKE 8340 .7 .0 * .7 .7 100
SNIDER BASIN 8250 1.1 .0 * 1.2 .8 150
SPRING CREEK DIVIDE 9000 1.7 .2 850* 1.7 1.1 155
TRIPLE PEAK 8500 1.4 .1 1400* 1.7 1.4 121
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Basin wide percent of average 880* 106
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .1 .7 14
HEWINTA 9500 .0 .1 0* 1.2 1.2 100
HICKERSON PARK 9150 .1 .0 * .6 1.1 55
HOLE-IN-ROCK 9150 .0 .0 100* 1.4 1.1 127
INDIAN CREEK 9425 .9 .2 450* .8 1.2 67
KELLEY R.S. 8180 .3 .1 300* .5 .9 56
STEEL CREEK PARK 10100 .7 .9 78* 1.0 1.2 83
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Basin wide percent of average 146* 76
UPPER BEAR RIVER
BUG LAKE 7950 .0 .7 0* .4 1.7 24
HAYDEN FORK 9400 .0 .4 0* .9 1.3 69
KELLEY R.S. 8180 .3 .1 300* .5 .9 56
LILY LAKE 9050 .0 .5 0* 1.1 1.4 79
MONTE CRISTO 8960 .0 .8 0* .9 1.8 50
SALT RIVER SUMMIT 7600 .2 .0 * .8 .9 89
TRIAL LAKE 9960 .0 .8 0* 1.2 1.5 80
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Basin wide percent of average 9* 61
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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.