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 THURSDAY: OCTOBER 22 , 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 .3 0* .4 1.4 29
COTTONWOOD CREEK 7600 .2 .3 67* 2.3 1.5 153
GRANITE CREEK 6770 .1 .2 50* .3 1.6 19
GRASSY LAKE 7265 .0 .5 0* .3 2.2 14
GROS VENTRE SUMMIT 8775 .8 .5 160* 1.4 1.1 127
LEWIS LAKE DIVIDE 7860 .0 .6 0* .3 2.3 13
PHILLIPS BENCH 8200 .2 .5 40* .4 1.8 22
SALT RIVER SUMMIT 7600 .0 .0 100* 1.4 1.2 117
SNAKE RIVER STATION 6920 .1 .2 50* .3 1.6 19
SPRING CREEK DIVIDE 9000 .0 .6 0* 1.3 1.4 93
THUMB DIVIDE 7980 .0 .2 0* .2 1.3 15
TOGWOTEE PASS 9580 1.1 1.5 73* 1.4 1.7 82
TWO OCEAN PLATEAU 9360 1.5 2.2 68* 1.3 1.9 68
WILLOW CREEK 8450 .0 .5 0* 2.2 1.9 116
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Basin wide percent of average 49* 59
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.1 2.1 52* .7 1.3 54
BLACK BEAR 7950 .6 1.8 33* .7 2.4 29
CANYON 7940 .0 .4 0* .1 1.2 8
FISHER CREEK 9100 .5 1.6 31* .8 2.0 40
MADISON PLATEAU 7750 .2 .9 22* .4 1.7 24
NORTHEAST ENTRANCE 7350 .0 .1 0* .4 1.0 40
PARKER PEAK 9400 .9 2.5 36 .8 1.5 53
SYLVAN LAKE 8420 .0 1.7 0* 1.0 1.8 56
THUMB DIVIDE 7980 .0 .2 0* .2 1.3 15
TWO OCEAN PLATEAU 9360 1.5 2.2 68* 1.3 1.9 68
WHISKEY CREEK 6800 .3 .4 75* .2 1.5 13
WHITE MILL 8700 .0 1.3 0* .5 1.8 28
WOLVERINE 7650 .1 .2 50* 1.1 1.1 100
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Basin wide percent of average 34* 40
WIND RIVER
BURROUGHS CREEK 8750 .6 .5 120* .9 1.1 82
COLD SPRINGS 9630 .9 .5 180* 2.1 1.3 162
DEER PARK 9700 1.6 -M * 2.6 -M *
HOBBS PARK 10100 3.2 1.3 246* 4.0 1.4 286
LITTLE WARM 9620 .5 .6 83* 1.5 1.2 125
SOUTH PASS 9040 1.1 1.8 61 2.4 1.5 160
ST. LAWRENCE ALT 8620 1.1 .5 220* 2.8 1.2 233
TOGWOTEE PASS 9580 1.1 1.5 73* 1.4 1.7 82
TOWNSEND CREEK 8700 1.8 .6 300* 3.5 1.3 269
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Basin wide percent of average 141* 174
BIGHORN BASIN
BALD MTN. 9375 2.1 1.9 111* 2.3 1.6 144
BEAR TRAP MEADOW 7900 .6 .4 150* 1.7 1.1 155
BLACKWATER 9780 1.9 1.8 106* 1.9 1.6 119
BONE SPRINGS DIV 9350 1.4 2.1 67 2.0 1.5 133
EVENING STAR 9200 .3 2.6 12* .8 2.0 40
GRAVE SPRINGS 8550 .8 -M * 2.3 1.3 177
KIRWIN 9550 1.8 1.0 180* 2.1 1.1 191
LOST CREEK 8080 -M .9 * -M 1.4 *
MARQUETTE 8760 2.7 .7 386* 3.4 1.2 283
MIDDLE POWDER 7760 1.3 .9 144* 3.3 1.4 236
OWL CREEK 8975 1.5 .4 375* 2.0 .7 286
POWDER RIVER PASS 9480 .3 .8 38* 1.4 1.3 108
SHELL CREEK 9580 1.8 1.9 95 1.4 1.3 108
SYLVAN LAKE 8420 .0 1.7 0* 1.0 1.8 56
SYLVAN ROAD 8120 .1 1.0 10* .4 1.5 27
TIMBER CREEK 7950 1.6 .2 800* 2.6 .9 289
YOUNTS PEAK 8350 1.4 1.5 93* .7 1.3 54
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Basin wide percent of average 99* 136
SHOSHONE RIVER
BLACKWATER 9780 1.9 1.8 106* 1.9 1.6 119
EVENING STAR 9200 .3 2.6 12* .8 2.0 40
KIRWIN 9550 1.8 1.0 180* 2.1 1.1 191
MARQUETTE 8760 2.7 .7 386* 3.4 1.2 283
SYLVAN LAKE 8420 .0 1.7 0* 1.0 1.8 56
SYLVAN ROAD 8120 .1 1.0 10* .4 1.5 27
YOUNTS PEAK 8350 1.4 1.5 93* .7 1.3 54
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Basin wide percent of average 80* 98
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .6 .4 150* 1.7 1.1 155
BONE SPRINGS DIV 9350 1.4 2.1 67 2.0 1.5 133
BURGESS JUNCTION 7880 .5 1.1 45* 1.9 1.4 136
CLOUD PEAK RESERVOIR 9860 1.1 .9 122* 2.9 1.4 207
DOME LAKE 8880 .8 1.3 62* 2.1 1.6 131
GRAVE SPRINGS 8550 .8 -M * 2.3 1.3 177
HANSEN SAWMILL 8760 .3 .5 60* 1.3 1.1 118
LOST CREEK 8080 -M .9 * -M 1.4 *
MIDDLE POWDER 7760 1.3 .9 144* 3.3 1.4 236
POWDER RIVER PASS 9480 .3 .8 38* 1.4 1.3 108
SUCKER CREEK 8880 1.2 .8 150* 2.4 1.5 160
TIE CREEK 6870 .2 -M * -M 1.3 *
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Basin wide percent of average 85* 157
BELLE FOURCHE
BLIND PARK 6890 -M 1.1 * 4.5 1.2 375
NORTH RAPID CREEK 6130 -M -M * 5.7 -M *
WARREN PEAK 6520 -M 1.1 * 4.6 .9 511
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Basin wide percent of average * 433
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 1.0 0* 2.3 1.7 135
DIVIDE PEAK 8800 .7 1.2 58* -M 2.1 *
ELK RIVER 8700 .0 .2 0* 4.6 1.6 288
JOE WRIGHT 10120 2.1 1.9 111* 4.0 2.4 167
NORTH FRENCH CREEK 10100 2.3 1.3 177* 4.5 1.6 281
OLD BATTLE 10000 1.4 2.5 56* 3.7 2.2 168
SOUTH BRUSH CREEK 8400 1.3 .2 650* -M 1.6 *
TOWER 10500 .1 3.7 3* 3.4 2.7 126
WEBBER SPRINGS 9200 .1 1.1 9* 2.9 2.0 145
WILLOW CREEK PASS 9540 .0 .6 0* 2.6 1.2 217
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Basin wide percent of average 58* 182
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.0 1.3 77* .1 1.6 6
CASPER MTN. 7900 2.9 .8 362* 4.9 1.7 288
DEADMAN HILL 10220 2.1 .8 262* 3.0 1.6 188
DEER PARK 9700 1.6 -M * 2.6 -M *
LAPRELE CREEK 8320 .0 .4 0* 3.5 1.0 350
RENO HILL 8400 4.0 1.1 364* 6.3 1.7 371
ROACH 9700 .5 .8 62* 2.1 1.8 117
SAND LAKE 10080 4.2 1.8 233* 6.2 1.8 344
SOUTH PASS 9040 1.1 1.8 61 2.4 1.5 160
WINDY PEAK 7840 .4 .1 400* 3.9 .8 488
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Basin wide percent of average 182* 240
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .2 0* 2.1 1.2 175
DIVIDE PEAK 8800 .7 1.2 58* -M 2.1 *
OLD BATTLE 10000 1.4 2.5 56* 3.7 2.2 168
SANDSTONE RS 8150 .0 .3 0* 3.2 1.2 267
WHISKEY PARK 8950 .1 1.3 8* 3.7 1.3 285
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Basin wide percent of average 40* 215
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.4 .3 467* 1.8 1.1 164
BLIND BULL SUM 8650 .7 .9 78* 1.1 1.4 79
EAST RIM DIVIDE 7930 .2 .2 100* .6 1.0 60
ELKHART PARK G.S. 9400 .8 .4 200* 1.4 1.1 127
GROS VENTRE SUMMIT 8775 .8 .5 160* 1.4 1.1 127
KENDALL R.S. 7740 .2 .0 * .8 1.0 80
LOOMIS PARK 8240 .2 .2 100* .9 1.2 75
NEW FORK LAKE 8340 .5 .0 * .7 .9 78
SNIDER BASIN 8250 .0 .0 100* .7 1.0 70
SPRING CREEK DIVIDE 9000 .0 .6 0* 1.3 1.4 93
TRIPLE PEAK 8500 .6 .4 150* 1.3 1.9 68
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Basin wide percent of average 134* 92
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .9 144
HEWINTA 9500 .4 .1 400* 2.1 1.6 131
HICKERSON PARK 9150 1.4 .1 1400* 2.1 1.4 150
HOLE-IN-ROCK 9150 .8 .0 * 2.9 1.4 207
INDIAN CREEK 9425 .7 .7 100* 1.6 1.6 100
KELLEY R.S. 8180 .1 .2 50* 1.3 1.2 108
STEEL CREEK PARK 10100 .8 1.3 62* 2.7 1.6 169
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Basin wide percent of average 142* 144
UPPER BEAR RIVER
BUG LAKE 7950 .8 .8 100* 1.9 2.2 86
HAYDEN FORK 9400 .1 .5 20* 1.5 1.7 88
KELLEY R.S. 8180 .1 .2 50* 1.3 1.2 108
LILY LAKE 9050 1.2 .6 200* 2.7 1.8 150
MONTE CRISTO 8960 .0 1.0 0* 1.9 2.4 79
SALT RIVER SUMMIT 7600 .0 .0 100* 1.4 1.2 117
TRIAL LAKE 9960 .2 1.2 17* 1.1 2.0 55
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Basin wide percent of average 56* 94
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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.