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 19 , 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 .4 .2 200* 1.6 1.2 133
COTTONWOOD CREEK 7600 .6 .2 300* 1.3 1.3 100
GRANITE CREEK 6770 .2 .1 200* 1.5 1.3 115
GRASSY LAKE 7265 1.6 .3 533* 2.2 1.9 116
GROS VENTRE SUMMIT 8775 1.0 .3 333* .6 .9 67
LEWIS LAKE DIVIDE 7860 1.4 .3 467* 1.9 2.0 95
PHILLIPS BENCH 8200 -M .3 * -M 1.5 *
SALT RIVER SUMMIT 7600 .0 .0 100* .8 1.0 80
SNAKE RIVER STATION 6920 .8 .1 800* 1.5 1.3 115
SPRING CREEK DIVIDE 9000 1.6 .3 533* 1.9 1.2 158
THUMB DIVIDE 7980 .9 .1 900* 1.0 1.1 91
TOGWOTEE PASS 9580 2.2 1.3 169* 2.3 1.5 153
TWO OCEAN PLATEAU 9360 2.0 1.8 111* 1.5 1.6 94
WILLOW CREEK 8450 .2 .3 67* 1.3 1.6 81
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Basin wide percent of average 243* 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.9 1.9 100* 1.9 1.1 173
BLACK BEAR 7950 2.7 1.6 169* 3.2 2.0 160
CANYON 7940 .8 .3 267* 1.2 1.0 120
FISHER CREEK 9100 1.8 1.3 138* 2.1 1.7 124
MADISON PLATEAU 7750 1.4 .7 200* 2.1 1.5 140
NORTHEAST ENTRANCE 7350 .1 .1 100* .9 .9 100
PARKER PEAK 9400 1.2 2.2 55* 1.0 1.3 77
SYLVAN LAKE 8420 1.8 1.4 129* 2.2 1.5 147
THUMB DIVIDE 7980 .9 .1 900* 1.0 1.1 91
TWO OCEAN PLATEAU 9360 2.0 1.8 111* 1.5 1.6 94
WHISKEY CREEK 6800 1.2 .3 400* 1.4 1.3 108
WHITE MILL 8700 1.6 1.1 145* 1.5 1.6 94
WOLVERINE 7650 .2 .1 200* 1.4 .9 156
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Basin wide percent of average 136* 122
WIND RIVER
BURROUGHS CREEK 8750 1.1 .4 275* 1.3 .9 144
COLD SPRINGS 9630 .2 .4 50* .5 1.1 45
DEER PARK 9700 .9 -M * 1.1 -M *
HOBBS PARK 10100 .8 1.1 73* .8 1.2 67
LITTLE WARM 9620 1.1 .5 220* 1.3 1.0 130
SOUTH PASS 9040 .5 1.6 31* 1.1 1.3 85
ST. LAWRENCE ALT 8620 .2 .4 50* .3 1.0 30
TOGWOTEE PASS 9580 2.2 1.3 169* 2.3 1.5 153
TOWNSEND CREEK 8700 .2 .5 40* .5 1.1 45
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Basin wide percent of average 102* 89
BIGHORN BASIN
BALD MTN. 9375 2.6 1.7 153* 2.5 1.3 192
BEAR TRAP MEADOW 7900 1.0 .3 333* 1.8 .9 200
BLACKWATER 9780 1.3 1.6 81* 1.2 1.4 86
BONE SPRINGS DIV 9350 2.4 1.9 126 2.6 1.3 200
EVENING STAR 9200 1.8 2.2 82* 2.6 1.7 153
GRAVE SPRINGS 8550 1.1 .6 183* 2.4 1.1 218
KIRWIN 9550 1.1 .9 122* 1.2 .9 133
MARQUETTE 8760 .6 .6 100* .9 1.0 90
MIDDLE POWDER 7760 1.4 .8 175* 2.0 1.2 167
OWL CREEK 8975 .1 .4 25* .4 .6 67
POWDER RIVER PASS 9480 1.1 .7 157* 2.1 1.1 191
SHELL CREEK 9580 2.6 1.7 153 2.5 1.1 227
SYLVAN LAKE 8420 1.8 1.4 129* 2.2 1.5 147
SYLVAN ROAD 8120 .9 .8 112* 1.8 1.3 138
TIMBER CREEK 7950 .3 .1 300* .8 .8 100
YOUNTS PEAK 8350 1.4 1.3 108* 1.3 1.1 118
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Basin wide percent of average 126* 155
SHOSHONE RIVER
BLACKWATER 9780 1.3 1.6 81* 1.2 1.4 86
EVENING STAR 9200 1.8 2.2 82* 2.6 1.7 153
KIRWIN 9550 1.1 .9 122* 1.2 .9 133
MARQUETTE 8760 .6 .6 100* .9 1.0 90
SYLVAN LAKE 8420 1.8 1.4 129* 2.2 1.5 147
SYLVAN ROAD 8120 .9 .8 112* 1.8 1.3 138
YOUNTS PEAK 8350 1.4 1.3 108* 1.3 1.1 118
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Basin wide percent of average 101* 126
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.0 .3 333* 1.8 .9 200
BIG GOOSE 7990 1.1 -M * 2.6 -M *
BONE SPRINGS DIV 9350 2.4 1.9 126 2.6 1.3 200
BURGESS JUNCTION 7880 1.2 .9 133* 2.3 1.2 192
CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.0 1.2 250
DOME LAKE 8880 1.7 1.1 155* 2.8 1.3 215
GRAVE SPRINGS 8550 1.1 .6 183* 2.4 1.1 218
HANSEN SAWMILL 8760 .4 .4 100* 1.5 .9 167
MIDDLE POWDER 7760 1.4 .8 175* 2.0 1.2 167
POWDER RIVER PASS 9480 1.1 .7 157* 2.1 1.1 191
SUCKER CREEK 8880 1.9 .7 271* 3.2 1.3 246
TIE CREEK 6870 .2 -M * 2.3 1.1 209
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Basin wide percent of average 167* 206
BELLE FOURCHE
BLIND PARK 6890 .5 1.0 50* 2.3 1.0 230
COLE CANYON 5910 .0 .2 0* .9 .8 112
NORTH RAPID CREEK 6130 .6 -M * 2.0 -M *
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Basin wide percent of average 42* 178
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .8 25* 1.8 1.5 120
DIVIDE PEAK 8800 1.4 1.0 140* 1.5 1.8 83
ELK RIVER 8700 .1 .1 100* 1.3 1.3 100
JOE WRIGHT 10120 1.6 1.6 100* 1.6 2.0 80
NORTH FRENCH CREEK 10100 2.7 1.0 270* 2.6 1.3 200
OLD BATTLE 10000 1.2 2.2 55* 2.0 1.9 105
SOUTH BRUSH CREEK 8400 .2 .2 100* 1.4 1.3 108
TOWER 10500 1.9 3.0 63* 2.1 2.3 91
WEBBER SPRINGS 9200 .6 .8 75* 1.5 1.7 88
WILLOW CREEK PASS 9540 .0 .4 0* .6 1.0 60
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Basin wide percent of average 89* 102
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.6 1.1 145* 2.2 1.4 157
CASPER MTN. 7900 2.3 .6 383* 3.0 1.5 200
DEADMAN HILL 10220 .5 .6 83* 1.0 1.4 71
DEER PARK 9700 .9 -M * 1.1 -M *
LAPRELE CREEK 8320 2.7 .3 900* -M .9 *
RENO HILL 8400 2.3 .9 256* 3.0 1.5 200
ROACH 9700 .3 .6 50* .9 1.6 56
SAND LAKE 10080 2.9 1.4 207* 2.8 1.5 187
SOUTH PASS 9040 .5 1.6 31* 1.1 1.3 85
WINDY PEAK 7840 .3 .0 * 2.3 .7 329
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Basin wide percent of average 185* 150
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .1 100* 1.4 1.0 140
DIVIDE PEAK 8800 1.4 1.0 140* 1.5 1.8 83
OLD BATTLE 10000 1.2 2.2 55* 2.0 1.9 105
SANDSTONE RS 8150 -M .2 * 1.8 1.0 180
WHISKEY PARK 8950 .8 1.0 80* 2.0 1.1 182
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Basin wide percent of average 81* 128
UPPER GREEN RIVER
BIG SANDY OPENING 9100 -M .2 * .4 .9 44
BLIND BULL SUM 8650 1.9 .5 380* 1.6 1.2 133
EAST RIM DIVIDE 7930 .5 .1 500* .6 .9 67
ELKHART PARK G.S. 9400 .7 .2 350* .7 .9 78
GROS VENTRE SUMMIT 8775 1.0 .3 333* .6 .9 67
KENDALL R.S. 7740 .0 .0 100* .8 .9 89
LOOMIS PARK 8240 1.1 .1 1100* 1.2 1.0 120
NEW FORK LAKE 8340 .6 .0 * .8 .8 100
SNIDER BASIN 8250 .7 .0 * 1.4 .9 156
SPRING CREEK DIVIDE 9000 1.6 .3 533* 1.9 1.2 158
TRIPLE PEAK 8500 1.4 .2 700* 2.2 1.6 138
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Basin wide percent of average 482* 109
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .2 .8 25
HEWINTA 9500 .0 .1 0* 1.3 1.4 93
HICKERSON PARK 9150 .1 .0 * .6 1.2 50
HOLE-IN-ROCK 9150 .0 .0 100* 1.2 1.2 100
INDIAN CREEK 9425 .8 .4 200* .7 1.3 54
KELLEY R.S. 8180 .2 .1 200* .5 1.0 50
STEEL CREEK PARK 10100 .5 1.1 45* .9 1.4 64
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Basin wide percent of average 88* 65
UPPER BEAR RIVER
BUG LAKE 7950 .0 .7 0* .4 1.9 21
HAYDEN FORK 9400 .0 .4 0* 1.1 1.5 73
KELLEY R.S. 8180 .2 .1 200* .5 1.0 50
LILY LAKE 9050 -M .5 * 1.2 1.6 75
MONTE CRISTO 8960 -M .9 * .8 2.0 40
SALT RIVER SUMMIT 7600 .0 .0 100* .8 1.0 80
TRIAL LAKE 9960 .0 1.0 0* 1.2 1.7 71
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Basin wide percent of average 9* 56
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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.