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 MONDAY: OCTOBER 13 , 1997
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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 .0 * 1.3 .8 162
COTTONWOOD CREEK 7600 .4 .0 * 1.8 .9 200
GRANITE CREEK 6770 .1 .0 * .4 .9 44
GRASSY LAKE 7265 .6 .0 * 2.3 1.3 177
GROS VENTRE SUMMIT 8775 .2 .0 * .8 .6 133
LEWIS LAKE DIVIDE 7860 .7 .0 * 1.4 1.3 108
PHILLIPS BENCH 8200 .3 .0 * 1.1 1.0 110
SALT RIVER SUMMIT 7600 .2 .0 * 1.4 .7 200
SNAKE RIVER STATION 6920 .1 .0 * 1.1 .9 122
SPRING CREEK DIVIDE 9000 .2 .0 * .8 .8 100
THUMB DIVIDE 7980 .5 .0 * 1.3 .7 186
TOGWOTEE PASS 9580 1.1 .9 122* 1.2 1.0 120
TWO OCEAN PLATEAU 9360 1.4 1.1 127* 2.0 1.1 182
WILLOW CREEK 8450 .7 .0 * 2.8 1.1 255
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Basin wide percent of average 125* 150
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .8 1.4 57* .9 .7 129
BLACK BEAR 7950 1.7 1.1 155* 2.1 1.4 150
CANYON 7940 .6 .2 300* 1.6 .7 229
FISHER CREEK 9100 1.9 .8 238* 1.6 1.2 133
MADISON PLATEAU 7750 .7 .5 140* 1.7 1.0 170
NORTHEAST ENTRANCE 7350 .0 .0 100* 1.6 .6 267
PARKER PEAK 9400 1.4 1.6 88* 1.8 .9 200
SYLVAN LAKE 8420 1.5 1.0 150* 3.1 1.0 310
THUMB DIVIDE 7980 .5 .0 * 1.3 .7 186
TWO OCEAN PLATEAU 9360 1.4 1.1 127* 2.0 1.1 182
WHISKEY CREEK 6800 .0 .2 0* 1.5 .9 167
WHITE MILL 8700 1.3 .7 186* 1.8 1.0 180
WOLVERINE 7650 .0 .1 0* 1.6 .6 267
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Basin wide percent of average 130* 192
WIND RIVER
BURROUGHS CREEK 8750 .2 .3 67* .7 .6 117
COLD SPRINGS 9630 .0 .3 0* .4 .7 57
DEER PARK 9700 .0 -M * .0 -M *
HOBBS PARK 10100 .2 .7 29* .4 .8 50
LITTLE WARM 9620 .1 .4 25* 1.1 .7 157
SOUTH PASS 9040 .4 1.1 36* 1.2 .9 133
ST. LAWRENCE ALT 8620 .1 .3 33* .6 .7 86
TOGWOTEE PASS 9580 1.1 .9 122* 1.2 1.0 120
TOWNSEND CREEK 8700 .1 .3 33* .6 .7 86
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Basin wide percent of average 51* 102
BIGHORN BASIN
BALD MTN. 9375 2.0 1.3 154* 1.7 .9 189
BEAR TRAP MEADOW 7900 .0 .2 0* .2 .6 33
BLACKWATER 9780 .5 1.2 42* 1.1 .9 122
BONE SPRINGS DIV 9350 1.0 1.6 62* 1.6 .9 178
EVENING STAR 9200 .8 1.5 53* 2.0 1.1 182
GRAVE SPRINGS 8550 .3 -M * .8 .7 114
KIRWIN 9550 .3 .6 50* .7 .6 117
LOST CREEK 8080 -M .5 * -M .8 *
MARQUETTE 8760 .8 .5 160* 1.2 .7 171
MIDDLE POWDER 7760 .7 .6 117* 1.2 .8 150
OWL CREEK 8975 .4 .4 100* .3 .4 75
POWDER RIVER PASS 9480 .1 .5 20* .5 .7 71
SHELL CREEK 9580 1.0 1.4 71* 1.0 .7 143
SYLVAN LAKE 8420 1.5 1.0 150* 3.1 1.0 310
SYLVAN ROAD 8120 .0 .6 0* 1.7 .9 189
TIMBER CREEK 7950 -M .1 * 1.5 .5 300
YOUNTS PEAK 8350 .2 .9 22* .5 .7 71
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Basin wide percent of average 76* 158
SHOSHONE RIVER
BLACKWATER 9780 .5 1.2 42* 1.1 .9 122
EVENING STAR 9200 .8 1.5 53* 2.0 1.1 182
KIRWIN 9550 .3 .6 50* .7 .6 117
MARQUETTE 8760 .8 .5 160* 1.2 .7 171
SYLVAN LAKE 8420 1.5 1.0 150* 3.1 1.0 310
SYLVAN ROAD 8120 .0 .6 0* 1.7 .9 189
YOUNTS PEAK 8350 .2 .9 22* .5 .7 71
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Basin wide percent of average 65* 175
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .2 0* .2 .6 33
BONE SPRINGS DIV 9350 1.0 1.6 62* 1.6 .9 178
BURGESS JUNCTION 7880 .3 .6 50* 1.2 .8 150
CLOUD PEAK RESERVOIR 9860 .2 .5 40* 1.8 .8 225
DOME LAKE 8880 .2 .8 25* 1.4 .9 156
GRAVE SPRINGS 8550 .3 -M * .8 .7 114
HANSEN SAWMILL 8760 .0 .3 0* .9 .6 150
LOST CREEK 8080 -M .5 * -M .8 *
MIDDLE POWDER 7760 .7 .6 117* 1.2 .8 150
POWDER RIVER PASS 9480 .1 .5 20* .5 .7 71
SUCKER CREEK 8880 .5 .5 100* 1.2 .9 133
TIE CREEK 6870 .2 -M * 1.2 .7 171
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Basin wide percent of average 54* 143
BELLE FOURCHE
BLIND PARK 6890 .3 .7 43* .9 .7 129
NORTH RAPID CREEK 6130 .2 -M * .5 -M *
WARREN PEAK 6520 .5 .7 71* 1.2 .5 240
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Basin wide percent of average 57* 175
UPPER N. PLATTE RIVER
COLUMBINE 9400 .6 .4 150* 1.8 1.0 180
DIVIDE PEAK 8800 .4 .5 80* 1.5 1.2 125
ELK RIVER 8700 .2 .0 * 1.6 .9 178
JOE WRIGHT 10120 1.0 .9 111* 4.2 1.4 300
NORTH FRENCH CREEK 10100 .9 .5 180* 2.1 .9 233
OLD BATTLE 10000 1.3 1.6 81* 2.5 1.2 208
SOUTH BRUSH CREEK 8400 .5 .1 500* 1.3 .9 144
TOWER 10500 -M 1.8 * -M 1.5 *
WEBBER SPRINGS 9200 .4 .4 100* 2.1 1.2 175
WILLOW CREEK PASS 9540 .8 .2 400* 1.1 .7 157
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Basin wide percent of average 128* 194
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .8 0* .6 .9 67
CASPER MTN. 7900 .7 .3 233* 1.0 1.0 100
DEADMAN HILL 10220 .6 .3 200* .6 .9 67
DEER PARK 9700 .0 -M * .0 -M *
LAPRELE CREEK 8320 .4 .1 400* .9 .6 150
RENO HILL 8400 .8 .5 160* 1.1 1.0 110
ROACH 9700 .2 .3 67* 1.0 1.0 100
SAND LAKE 10080 1.0 .8 125* 1.7 1.0 170
SOUTH PASS 9040 .4 1.1 36* 1.2 .9 133
WINDY PEAK 7840 .0 .0 100* .8 .5 160
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Basin wide percent of average 98* 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * 2.3 .7 329
DIVIDE PEAK 8800 .4 .5 80* 1.5 1.2 125
OLD BATTLE 10000 1.3 1.6 81* 2.5 1.2 208
SANDSTONE RS 8150 .0 .0 100* 2.1 .7 300
WHISKEY PARK 8950 .6 .5 120* 2.3 .7 329
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Basin wide percent of average 88* 238
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .8 .0 * 1.0 .6 167
BLIND BULL SUM 8650 .2 .0 * 1.0 .8 125
EAST RIM DIVIDE 7930 .0 .0 100* .2 .6 33
ELKHART PARK G.S. 9400 .5 .0 * 1.1 .6 183
GROS VENTRE SUMMIT 8775 .2 .0 * .8 .6 133
KENDALL R.S. 7740 .0 .0 100* .6 .6 100
LOOMIS PARK 8240 .1 .0 * .5 .7 71
NEW FORK LAKE 8340 .1 .0 * .5 .5 100
SNIDER BASIN 8250 .2 .0 * .1 .6 17
SPRING CREEK DIVIDE 9000 .2 .0 * .8 .8 100
TRIPLE PEAK 8500 .2 .0 * .8 1.1 73
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Basin wide percent of average * 99
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .4 .5 80
HEWINTA 9500 .4 .1 400* 2.0 .9 222
HICKERSON PARK 9150 .6 .0 * 1.4 .8 175
HOLE-IN-ROCK 9150 .0 .0 100* 1.5 .8 188
INDIAN CREEK 9425 .5 .0 * .5 .9 56
KELLEY R.S. 8180 .2 .0 * .6 .7 86
STEEL CREEK PARK 10100 1.0 .7 143* 1.8 .9 200
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Basin wide percent of average 175* 149
UPPER BEAR RIVER
BUG LAKE 7950 .2 .5 40* 1.2 1.3 92
HAYDEN FORK 9400 .0 .3 0* 1.6 1.0 160
KELLEY R.S. 8180 .2 .0 * .6 .7 86
LILY LAKE 9050 .6 .4 150* 1.6 1.0 160
MONTE CRISTO 8960 .8 .6 133* 1.6 1.4 114
SALT RIVER SUMMIT 7600 .2 .0 * 1.4 .7 200
TRIAL LAKE 9960 .8 .6 133* 1.6 1.1 145
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Basin wide percent of average 100* 133
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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.