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 SATURDAY: OCTOBER 25 , 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 .2 .4 50* 1.6 1.5 107
COTTONWOOD CREEK 7600 .4 .4 100* 2.2 1.7 129
GRANITE CREEK 6770 .2 .4 50* .6 1.8 33
GRASSY LAKE 7265 .9 .6 150* 2.9 2.6 112
GROS VENTRE SUMMIT 8775 2.0 .6 333* 1.0 1.2 83
LEWIS LAKE DIVIDE 7860 .6 .8 75* 2.0 2.6 77
PHILLIPS BENCH 8200 .6 .7 86* 1.6 2.0 80
SALT RIVER SUMMIT 7600 .1 .0 * 1.6 1.3 123
SNAKE RIVER STATION 6920 .4 .4 100* -M 1.8 *
SPRING CREEK DIVIDE 9000 .2 .8 25* 1.3 1.6 81
THUMB DIVIDE 7980 .8 .3 267* 2.0 1.5 133
TOGWOTEE PASS 9580 2.2 1.8 122* 1.9 1.9 100
TWO OCEAN PLATEAU 9360 2.6 2.6 100* 2.6 2.2 118
WILLOW CREEK 8450 .5 .7 71* 3.5 2.2 159
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Basin wide percent of average 110* 103
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 2.4 * 1.1 1.5 73
BLACK BEAR 7950 2.9 2.1 138* 3.3 2.7 122
CANYON 7940 1.2 .6 200* 2.6 1.4 186
FISHER CREEK 9100 2.1 1.9 111* 1.9 2.3 83
MADISON PLATEAU 7750 1.5 1.1 136* 2.5 1.9 132
NORTHEAST ENTRANCE 7350 .1 .2 50* 1.8 1.2 150
PARKER PEAK 9400 -M 2.9 * -M 1.7 *
SYLVAN LAKE 8420 1.8 1.9 95* -M 2.0 *
THUMB DIVIDE 7980 .8 .3 267* 2.0 1.5 133
TWO OCEAN PLATEAU 9360 2.6 2.6 100* 2.6 2.2 118
WHISKEY CREEK 6800 .5 .6 83* 1.9 1.7 112
WHITE MILL 8700 1.5 1.4 107* 2.0 2.1 95
WOLVERINE 7650 .0 .2 0* 2.0 1.2 167
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Basin wide percent of average 116* 120
WIND RIVER
BURROUGHS CREEK 8750 1.0 .7 143* 1.6 1.2 133
COLD SPRINGS 9630 -M .7 * -M 1.5 *
DEER PARK 9700 .0 -M * .0 -M *
HOBBS PARK 10100 -M 1.6 * -M 1.5 *
LITTLE WARM 9620 -M .8 * -M 1.4 *
SOUTH PASS 9040 -M 2.1 * -M 1.7 *
ST. LAWRENCE ALT 8620 -M .6 * -M 1.3 *
TOGWOTEE PASS 9580 2.2 1.8 122* 1.9 1.9 100
TOWNSEND CREEK 8700 -M .7 * -M 1.5 *
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Basin wide percent of average 128* 113*
BIGHORN BASIN
BALD MTN. 9375 2.5 2.1 119* 2.5 1.8 139
BEAR TRAP MEADOW 7900 .1 .5 20* .7 1.2 58
BLACKWATER 9780 2.1 2.0 105* 2.2 1.9 116
BONE SPRINGS DIV 9350 -M 2.3 * -M 1.7 *
EVENING STAR 9200 -M 2.9 * -M 2.2 *
GRAVE SPRINGS 8550 .7 -M * 1.7 1.5 113
KIRWIN 9550 -M 1.2 * -M 1.2 *
LOST CREEK 8080 -M 1.0 * -M 1.5 *
MARQUETTE 8760 -M .8 * 3.9 1.4 279
MIDDLE POWDER 7760 -M 1.0 * -M 1.6 *
OWL CREEK 8975 1.2 .5 240* 1.2 .8 150
POWDER RIVER PASS 9480 .4 .9 44* 1.1 1.5 73
SHELL CREEK 9580 -M 2.1 * -M 1.5 *
SYLVAN LAKE 8420 1.8 1.9 95* -M 2.0 *
SYLVAN ROAD 8120 .2 1.2 17* 2.1 1.7 124
TIMBER CREEK 7950 -M .2 * 3.1 1.0 310
YOUNTS PEAK 8350 2.0 1.8 111* 1.4 1.5 93
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Basin wide percent of average 94* 139
SHOSHONE RIVER
BLACKWATER 9780 2.1 2.0 105* 2.2 1.9 116
EVENING STAR 9200 -M 2.9 * -M 2.2 *
KIRWIN 9550 -M 1.2 * -M 1.2 *
MARQUETTE 8760 -M .8 * 3.9 1.4 279
SYLVAN LAKE 8420 1.8 1.9 95* -M 2.0 *
SYLVAN ROAD 8120 .2 1.2 17* 2.1 1.7 124
YOUNTS PEAK 8350 2.0 1.8 111* 1.4 1.5 93
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Basin wide percent of average 88* 148
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .5 20* .7 1.2 58
BONE SPRINGS DIV 9350 -M 2.3 * -M 1.7 *
BURGESS JUNCTION 7880 .8 1.2 67* 2.2 1.5 147
CLOUD PEAK RESERVOIR 9860 1.0 1.0 100* 3.0 1.6 188
DOME LAKE 8880 1.8 1.5 120* 2.9 1.8 161
GRAVE SPRINGS 8550 .7 -M * 1.7 1.5 113
HANSEN SAWMILL 8760 .9 .6 150* 2.1 1.2 175
LOST CREEK 8080 -M 1.0 * -M 1.5 *
MIDDLE POWDER 7760 -M 1.0 * -M 1.6 *
POWDER RIVER PASS 9480 .4 .9 44* 1.1 1.5 73
SUCKER CREEK 8880 1.4 1.0 140* 2.5 1.7 147
TIE CREEK 6870 1.6 -M * 2.9 1.5 193
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Basin wide percent of average 96* 141
BELLE FOURCHE
BLIND PARK 6890 -M 1.3 * -M 1.4 *
NORTH RAPID CREEK 6130 .5 -M * 1.0 -M *
WARREN PEAK 6520 -M 1.3 * -M 1.1 *
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Basin wide percent of average * *
UPPER N. PLATTE RIVER
COLUMBINE 9400 .8 1.1 73* 2.8 1.9 147
DIVIDE PEAK 8800 1.4 1.5 93* 2.8 2.4 117
ELK RIVER 8700 .6 .2 300* 2.7 1.8 150
JOE WRIGHT 10120 1.9 2.3 83* 3.9 2.7 144
NORTH FRENCH CREEK 10100 1.5 1.5 100* 3.1 1.8 172
OLD BATTLE 10000 3.0 2.9 103* 4.2 2.5 168
SOUTH BRUSH CREEK 8400 .2 .3 67* 1.7 1.8 94
TOWER 10500 3.2 4.4 73* 14.5 3.1 468
WEBBER SPRINGS 9200 1.4 1.3 108* 3.7 2.3 161
WILLOW CREEK PASS 9540 1.5 .7 214* 1.7 1.4 121
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Basin wide percent of average 96* 189
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.0 1.5 67* 2.2 1.9 116
CASPER MTN. 7900 2.6 .9 289* 2.3 1.9 121
DEADMAN HILL 10220 3.0 1.0 300* 2.4 1.9 126
DEER PARK 9700 .0 -M * .0 -M *
LAPRELE CREEK 8320 1.0 .6 167* 1.9 1.2 158
RENO HILL 8400 1.7 1.2 142* 2.0 1.9 105
ROACH 9700 1.1 1.0 110* 2.3 2.1 110
SAND LAKE 10080 3.2 2.2 145* 4.1 2.0 205
SOUTH PASS 9040 -M 2.1 * -M 1.7 *
WINDY PEAK 7840 .8 .1 800* 1.8 .9 200
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Basin wide percent of average 169* 138
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .2 150* 3.2 1.4 229
DIVIDE PEAK 8800 1.4 1.5 93* 2.8 2.4 117
OLD BATTLE 10000 3.0 2.9 103* 4.2 2.5 168
SANDSTONE RS 8150 .2 .5 40* 2.9 1.3 223
WHISKEY PARK 8950 1.3 1.6 81* 3.4 1.5 227
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Basin wide percent of average 93* 181
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.2 .4 300* 1.0 1.2 83
BLIND BULL SUM 8650 .3 1.4 21* 1.3 1.5 87
EAST RIM DIVIDE 7930 .0 .2 0* .3 1.2 25
ELKHART PARK G.S. 9400 .3 .6 50* 1.3 1.2 108
GROS VENTRE SUMMIT 8775 2.0 .6 333* 1.0 1.2 83
KENDALL R.S. 7740 .1 .0 * .7 1.2 58
LOOMIS PARK 8240 .2 .3 67* .7 1.4 50
NEW FORK LAKE 8340 -M .0 * -M 1.1 *
SNIDER BASIN 8250 .1 .0 * .3 1.2 25
SPRING CREEK DIVIDE 9000 .2 .8 25* 1.3 1.6 81
TRIPLE PEAK 8500 .3 .6 50* 1.0 2.2 45
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Basin wide percent of average 92* 64
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * .8 1.0 80
HEWINTA 9500 1.4 .2 700* 3.1 1.9 163
HICKERSON PARK 9150 -M .1 * 3.5 1.6 219
HOLE-IN-ROCK 9150 1.1 .1 1100* 3.1 1.6 194
INDIAN CREEK 9425 1.0 1.0 100* .8 1.8 44
KELLEY R.S. 8180 .3 .3 100* 1.0 1.4 71
STEEL CREEK PARK 10100 .5 1.5 33* 2.8 1.9 147
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Basin wide percent of average 139* 135
UPPER BEAR RIVER
BUG LAKE 7950 .7 .9 78* 1.9 2.6 73
HAYDEN FORK 9400 .4 .7 57* 2.6 1.9 137
KELLEY R.S. 8180 .3 .3 100* 1.0 1.4 71
LILY LAKE 9050 .2 .8 25* 2.8 2.1 133
MONTE CRISTO 8960 1.2 1.1 109* 2.3 2.7 85
SALT RIVER SUMMIT 7600 .1 .0 * 1.6 1.3 123
TRIAL LAKE 9960 .8 1.4 57* 2.2 2.2 100
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Basin wide percent of average 69* 101
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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.