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 19 , 1998
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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 .0 .2 0* .4 1.2 33
COTTONWOOD CREEK 7600 .3 .2 150* 2.3 1.3 177
GRANITE CREEK 6770 .0 .1 0* .2 1.3 15
GRASSY LAKE 7265 .0 .3 0* .2 1.9 11
GROS VENTRE SUMMIT 8775 .6 .3 200* 1.4 .9 156
LEWIS LAKE DIVIDE 7860 .0 .3 0* .2 2.0 10
PHILLIPS BENCH 8200 .1 .3 33* .4 1.5 27
SALT RIVER SUMMIT 7600 .1 .0 * 1.3 1.0 130
SNAKE RIVER STATION 6920 .0 .1 0* .3 1.3 23
SPRING CREEK DIVIDE 9000 .0 .3 0* 1.3 1.2 108
THUMB DIVIDE 7980 .2 .1 200* .2 1.1 18
TOGWOTEE PASS 9580 .9 1.3 69* 1.3 1.5 87
TWO OCEAN PLATEAU 9360 .7 1.8 39* 1.2 1.6 75
WILLOW CREEK 8450 .2 .3 67* 2.3 1.6 144
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Basin wide percent of average 54* 67
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.0 1.9 53* .6 1.1 55
BLACK BEAR 7950 .4 1.6 25* .6 2.0 30
CANYON 7940 .0 .3 0* .0 1.0 0
FISHER CREEK 9100 .4 1.3 31* .7 1.7 41
MADISON PLATEAU 7750 .2 .7 29* .3 1.5 20
NORTHEAST ENTRANCE 7350 .0 .1 0* .4 .9 44
PARKER PEAK 9400 .3 2.2 14* 1.1 1.3 85
SYLVAN LAKE 8420 .0 1.4 0* 1.0 1.5 67
THUMB DIVIDE 7980 .2 .1 200* .2 1.1 18
TWO OCEAN PLATEAU 9360 .7 1.8 39* 1.2 1.6 75
WHISKEY CREEK 6800 .3 .3 100* .2 1.3 15
WHITE MILL 8700 .0 1.1 0* .4 1.6 25
WOLVERINE 7650 .0 .1 0* 1.1 .9 122
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Basin wide percent of average 27* 45
WIND RIVER
BURROUGHS CREEK 8750 .5 .4 125* .9 .9 100
COLD SPRINGS 9630 .9 .4 225* 2.0 1.1 182
DEER PARK 9700 1.6 -M * 2.6 -M *
HOBBS PARK 10100 3.2 1.1 291* 3.9 1.2 325
LITTLE WARM 9620 .5 .5 100* 1.4 1.0 140
SOUTH PASS 9040 1.0 1.6 62* 2.3 1.3 177
ST. LAWRENCE ALT 8620 1.0 .4 250* 2.7 1.0 270
TOGWOTEE PASS 9580 .9 1.3 69* 1.3 1.5 87
TOWNSEND CREEK 8700 1.7 .5 340* 3.4 1.1 309
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Basin wide percent of average 156* 197
BIGHORN BASIN
BALD MTN. 9375 2.0 1.7 118* 2.2 1.3 169
BEAR TRAP MEADOW 7900 .6 .3 200* 1.7 .9 189
BLACKWATER 9780 1.6 1.6 100* 1.9 1.4 136
BONE SPRINGS DIV 9350 1.3 1.9 68 2.0 1.3 154
EVENING STAR 9200 .2 2.2 9* .7 1.7 41
GRAVE SPRINGS 8550 .8 -M * 2.2 1.1 200
KIRWIN 9550 1.7 .9 189* 2.1 .9 233
MARQUETTE 8760 2.6 .6 433* 3.2 1.0 320
MIDDLE POWDER 7760 1.5 .8 188* 3.3 1.2 275
OWL CREEK 8975 1.5 .4 375* 1.9 .6 317
POWDER RIVER PASS 9480 .3 .7 43* 1.4 1.1 127
SHELL CREEK 9580 1.5 1.7 88 1.3 1.1 118
SYLVAN LAKE 8420 .0 1.4 0* 1.0 1.5 67
SYLVAN ROAD 8120 .0 .8 0* .4 1.3 31
TIMBER CREEK 7950 1.7 .1 1700* 2.6 .8 325
YOUNTS PEAK 8350 .7 1.3 54* .7 1.1 64
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Basin wide percent of average 105* 156
SHOSHONE RIVER
BLACKWATER 9780 1.6 1.6 100* 1.9 1.4 136
EVENING STAR 9200 .2 2.2 9* .7 1.7 41
KIRWIN 9550 1.7 .9 189* 2.1 .9 233
MARQUETTE 8760 2.6 .6 433* 3.2 1.0 320
SYLVAN LAKE 8420 .0 1.4 0* 1.0 1.5 67
SYLVAN ROAD 8120 .0 .8 0* .4 1.3 31
YOUNTS PEAK 8350 .7 1.3 54* .7 1.1 64
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Basin wide percent of average 77* 112
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .6 .3 200* 1.7 .9 189
BONE SPRINGS DIV 9350 1.3 1.9 68 2.0 1.3 154
BURGESS JUNCTION 7880 .5 .9 56* 1.9 1.2 158
CLOUD PEAK RESERVOIR 9860 1.0 .8 125* 2.8 1.2 233
DOME LAKE 8880 .8 1.1 73* 2.1 1.3 162
GRAVE SPRINGS 8550 .8 -M * 2.2 1.1 200
HANSEN SAWMILL 8760 .3 .4 75* 1.3 .9 144
MIDDLE POWDER 7760 1.5 .8 188* 3.3 1.2 275
POWDER RIVER PASS 9480 .3 .7 43* 1.4 1.1 127
SUCKER CREEK 8880 1.1 .7 157* 2.1 1.3 162
TIE CREEK 6870 .4 -M * -M 1.1 *
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Basin wide percent of average 97* 181
BELLE FOURCHE
BLIND PARK 6890 .0 1.0 0* 4.6 1.0 460
NORTH RAPID CREEK 6130 .0 -M * 5.7 -M *
WARREN PEAK 6520 .0 1.0 0* 4.6 .8 575
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Basin wide percent of average 0* 511
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .8 0* 2.1 1.5 140
DIVIDE PEAK 8800 -M 1.0 * -M 1.8 *
ELK RIVER 8700 .0 .1 0* 3.8 1.3 292
JOE WRIGHT 10120 .5 1.6 31* 4.0 2.0 200
NORTH FRENCH CREEK 10100 2.3 1.0 230* 4.6 1.3 354
OLD BATTLE 10000 1.2 2.2 55* 3.5 1.9 184
SOUTH BRUSH CREEK 8400 1.4 .2 700* -M 1.3 *
TOWER 10500 -M 3.0 * 3.5 2.3 152
WEBBER SPRINGS 9200 .1 .8 12* 2.8 1.7 165
WILLOW CREEK PASS 9540 .0 .4 0* 2.2 1.0 220
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Basin wide percent of average 77* 204
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .9 1.1 82* .0 1.4 0
CASPER MTN. 7900 3.0 .6 500* 4.8 1.5 320
DEADMAN HILL 10220 1.6 .6 267* 3.0 1.4 214
DEER PARK 9700 1.6 -M * 2.6 -M *
LAPRELE CREEK 8320 .0 .3 0* 3.5 .9 389
RENO HILL 8400 4.2 .9 467* 6.2 1.5 413
ROACH 9700 .5 .6 83* 2.1 1.6 131
SAND LAKE 10080 4.2 1.4 300* 6.1 1.5 407
SOUTH PASS 9040 1.0 1.6 62* 2.3 1.3 177
WINDY PEAK 7840 .5 .0 * 3.6 .7 514
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Basin wide percent of average 217* 268
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .1 0* 2.1 1.0 210
DIVIDE PEAK 8800 -M 1.0 * -M 1.8 *
OLD BATTLE 10000 1.2 2.2 55* 3.5 1.9 184
SANDSTONE RS 8150 .0 .2 0* 3.2 1.0 320
WHISKEY PARK 8950 .0 1.0 0* 3.6 1.1 327
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Basin wide percent of average 34* 248
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.3 .2 650* 1.8 .9 200
BLIND BULL SUM 8650 .4 .5 80* 1.1 1.2 92
EAST RIM DIVIDE 7930 .2 .1 200* .6 .9 67
ELKHART PARK G.S. 9400 .6 .2 300* 1.4 .9 156
GROS VENTRE SUMMIT 8775 .6 .3 200* 1.4 .9 156
KENDALL R.S. 7740 .1 .0 * .8 .9 89
LOOMIS PARK 8240 .3 .1 300* .9 1.0 90
NEW FORK LAKE 8340 .5 .0 * .5 .8 62
SNIDER BASIN 8250 .0 .0 100* .7 .9 78
SPRING CREEK DIVIDE 9000 .0 .3 0* 1.3 1.2 108
TRIPLE PEAK 8500 .2 .2 100* 1.2 1.6 75
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Basin wide percent of average 189* 104
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .8 162
HEWINTA 9500 .0 .1 0* 2.2 1.4 157
HICKERSON PARK 9150 1.4 .0 * 2.0 1.2 167
HOLE-IN-ROCK 9150 .9 .0 * 2.8 1.2 233
INDIAN CREEK 9425 .7 .4 175* 1.4 1.3 108
KELLEY R.S. 8180 .0 .1 0* 1.2 1.0 120
STEEL CREEK PARK 10100 .6 1.1 55* 2.5 1.4 179
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Basin wide percent of average 76* 161
UPPER BEAR RIVER
BUG LAKE 7950 .6 .7 86* 1.9 1.9 100
HAYDEN FORK 9400 .3 .4 75* 1.7 1.5 113
KELLEY R.S. 8180 .0 .1 0* 1.2 1.0 120
LILY LAKE 9050 1.2 .5 240* 2.7 1.6 169
MONTE CRISTO 8960 .0 .9 0* 1.9 2.0 95
SALT RIVER SUMMIT 7600 .1 .0 * 1.3 1.0 130
TRIAL LAKE 9960 .2 1.0 20* 1.2 1.7 71
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Basin wide percent of average 64* 111
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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.