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 TUESDAY: OCTOBER 13 , 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 .0 100* .3 .8 38
COTTONWOOD CREEK 7600 .0 .0 100* 1.8 .9 200
GRANITE CREEK 6770 .0 .0 100* .2 .9 22
GRASSY LAKE 7265 .0 .0 100* .0 1.3 0
GROS VENTRE SUMMIT 8775 .7 .0 * .6 .6 100
LEWIS LAKE DIVIDE 7860 .0 .0 100* .2 1.3 15
PHILLIPS BENCH 8200 .0 .0 100* .4 1.0 40
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .7 171
SNAKE RIVER STATION 6920 -M .0 * -M .9 *
SPRING CREEK DIVIDE 9000 .3 .0 * 1.2 .8 150
THUMB DIVIDE 7980 .1 .0 * .1 .7 14
TOGWOTEE PASS 9580 .7 .9 78* .8 1.0 80
TWO OCEAN PLATEAU 9360 .7 1.1 64* .9 1.1 82
WILLOW CREEK 8450 .0 .0 100* 1.4 1.1 127
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Basin wide percent of average 70* 75
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .8 1.4 57* .7 .7 100
BLACK BEAR 7950 .0 1.1 0* .2 1.4 14
CANYON 7940 .0 .2 0* .1 .7 14
FISHER CREEK 9100 .3 .8 38* .8 1.2 67
MADISON PLATEAU 7750 .0 .5 0* .1 1.0 10
NORTHEAST ENTRANCE 7350 .0 .0 100* .4 .6 67
PARKER PEAK 9400 .0 1.6 0* .7 .9 78
SYLVAN LAKE 8420 .0 1.0 0* .8 1.0 80
THUMB DIVIDE 7980 .1 .0 * .1 .7 14
TWO OCEAN PLATEAU 9360 .7 1.1 64* .9 1.1 82
WHISKEY CREEK 6800 .1 .2 50* .0 .9 0
WHITE MILL 8700 .0 .7 0* .5 1.0 50
WOLVERINE 7650 .1 .1 100* .7 .6 117
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Basin wide percent of average 23* 51
WIND RIVER
BURROUGHS CREEK 8750 .4 .3 133* .5 .6 83
COLD SPRINGS 9630 .1 .3 33* .9 .7 129
DEER PARK 9700 .8 -M * 1.7 -M *
HOBBS PARK 10100 2.0 .7 286* 2.4 .8 300
LITTLE WARM 9620 .1 .4 25* .9 .7 129
SOUTH PASS 9040 .3 1.1 27* 1.4 .9 156
ST. LAWRENCE ALT 8620 .1 .3 33* 1.6 .7 229
TOGWOTEE PASS 9580 .7 .9 78* .8 1.0 80
TOWNSEND CREEK 8700 1.0 .3 333* 2.1 .7 300
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Basin wide percent of average 109* 174
BIGHORN BASIN
BALD MTN. 9375 1.5 1.3 115* 1.7 .9 189
BEAR TRAP MEADOW 7900 .1 .2 50* 1.2 .6 200
BLACKWATER 9780 1.2 1.2 100* 1.3 .9 144
BONE SPRINGS DIV 9350 .9 1.6 56* 1.6 .9 178
EVENING STAR 9200 .1 1.5 7* .5 1.1 45
GRAVE SPRINGS 8550 .3 -M * 1.4 .7 200
KIRWIN 9550 .7 .6 117* .8 .6 133
MARQUETTE 8760 .9 .5 180* 1.6 .7 229
MIDDLE POWDER 7760 .4 .6 67* 2.0 .8 250
OWL CREEK 8975 .4 .4 100* .9 .4 225
POWDER RIVER PASS 9480 .1 .5 20* 1.1 .7 157
SHELL CREEK 9580 1.3 1.4 93* 1.1 .7 157
SYLVAN LAKE 8420 .0 1.0 0* .8 1.0 80
SYLVAN ROAD 8120 .0 .6 0* .3 .9 33
TIMBER CREEK 7950 .2 .1 200* 1.3 .5 260
YOUNTS PEAK 8350 .7 .9 78* .6 .7 86
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Basin wide percent of average 69* 150
SHOSHONE RIVER
BLACKWATER 9780 1.2 1.2 100* 1.3 .9 144
EVENING STAR 9200 .1 1.5 7* .5 1.1 45
KIRWIN 9550 .7 .6 117* .8 .6 133
MARQUETTE 8760 .9 .5 180* 1.6 .7 229
SYLVAN LAKE 8420 .0 1.0 0* .8 1.0 80
SYLVAN ROAD 8120 .0 .6 0* .3 .9 33
YOUNTS PEAK 8350 .7 .9 78* .6 .7 86
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Basin wide percent of average 57* 100
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .2 50* 1.2 .6 200
BONE SPRINGS DIV 9350 .9 1.6 56* 1.6 .9 178
BURGESS JUNCTION 7880 .1 .6 17* 1.2 .8 150
CLOUD PEAK RESERVOIR 9860 .6 .5 120* 2.1 .8 262
DOME LAKE 8880 .4 .8 50* 1.2 .9 133
GRAVE SPRINGS 8550 .3 -M * 1.4 .7 200
HANSEN SAWMILL 8760 .2 .3 67* .9 .6 150
MIDDLE POWDER 7760 .4 .6 67* 2.0 .8 250
POWDER RIVER PASS 9480 .1 .5 20* 1.1 .7 157
SUCKER CREEK 8880 .2 .5 40* 1.5 .9 167
TIE CREEK 6870 .1 -M * .4 .7 57
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Basin wide percent of average 54* 174
BELLE FOURCHE
BLIND PARK 6890 .0 .7 0* 3.1 .7 443
NORTH RAPID CREEK 6130 .0 -M * 4.0 -M *
WARREN PEAK 6520 .0 .7 0* 3.8 .5 760
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Basin wide percent of average 0* 575
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .4 0* 1.9 1.0 190
DIVIDE PEAK 8800 -M .5 * -M 1.2 *
ELK RIVER 8700 .0 .0 100* 3.6 .9 400
JOE WRIGHT 10120 .9 .9 100* 3.3 1.4 236
NORTH FRENCH CREEK 10100 1.9 .5 380* 3.6 .9 400
OLD BATTLE 10000 1.5 1.6 94* 3.4 1.2 283
SOUTH BRUSH CREEK 8400 .2 .1 200* .5 .9 56
TOWER 10500 1.2 1.8 67* 3.3 1.5 220
WEBBER SPRINGS 9200 .0 .4 0* 2.4 1.2 200
WILLOW CREEK PASS 9540 .4 .2 200* 1.6 .7 229
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Basin wide percent of average 103* 243
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .3 .8 38* .0 .9 0
CASPER MTN. 7900 .1 .3 33* 2.2 1.0 220
DEADMAN HILL 10220 .6 .3 200* 1.6 .9 178
DEER PARK 9700 .8 -M * 1.7 -M *
LAPRELE CREEK 8320 .0 .1 0* 2.5 .6 417
RENO HILL 8400 1.6 .5 320* 2.9 1.0 290
ROACH 9700 .0 .3 0* 1.4 1.0 140
SAND LAKE 10080 2.4 .8 300* 4.4 1.0 440
SOUTH PASS 9040 .3 1.1 27* 1.4 .9 156
WINDY PEAK 7840 .0 .0 100* 2.6 .5 520
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Basin wide percent of average 126* 244
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 2.1 .7 300
DIVIDE PEAK 8800 -M .5 * -M 1.2 *
OLD BATTLE 10000 1.5 1.6 94* 3.4 1.2 283
SANDSTONE RS 8150 .0 .0 100* 3.1 .7 443
WHISKEY PARK 8950 .1 .5 20* 3.4 .7 486
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Basin wide percent of average 76* 364
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .0 * 1.4 .6 233
BLIND BULL SUM 8650 .2 .0 * .7 .8 88
EAST RIM DIVIDE 7930 .0 .0 100* .4 .6 67
ELKHART PARK G.S. 9400 .1 .0 * .6 .6 100
GROS VENTRE SUMMIT 8775 .7 .0 * .6 .6 100
KENDALL R.S. 7740 .1 .0 * .4 .6 67
LOOMIS PARK 8240 .1 .0 * .6 .7 86
NEW FORK LAKE 8340 .1 .0 * .3 .5 60
SNIDER BASIN 8250 .0 .0 100* .7 .6 117
SPRING CREEK DIVIDE 9000 .3 .0 * 1.2 .8 150
TRIPLE PEAK 8500 .1 .0 * 1.1 1.1 100
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Basin wide percent of average * 107
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.3 .5 260
HEWINTA 9500 .0 .1 0* 1.1 .9 122
HICKERSON PARK 9150 .4 .0 * .5 .8 62
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .8 138
INDIAN CREEK 9425 .8 .0 * 1.8 .9 200
KELLEY R.S. 8180 .0 .0 100* 1.2 .7 171
STEEL CREEK PARK 10100 -M .7 * 1.4 .9 156
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Basin wide percent of average 0* 153
UPPER BEAR RIVER
BUG LAKE 7950 .0 .5 0* 1.5 1.3 115
HAYDEN FORK 9400 .0 .3 0* .8 1.0 80
KELLEY R.S. 8180 .0 .0 100* 1.2 .7 171
LILY LAKE 9050 .0 .4 0* 1.4 1.0 140
MONTE CRISTO 8960 .1 .6 17* 1.6 1.4 114
SALT RIVER SUMMIT 7600 .0 .0 100* 1.2 .7 171
TRIAL LAKE 9960 .1 .6 17* .9 1.1 82
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Basin wide percent of average 8* 119
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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.