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 15 , 2007
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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 .1 .1 100* 1.7 .9 189
COTTONWOOD CREEK 7600 .0 .1 0* 1.7 1.4 121
GRANITE CREEK 6770 .0 .1 0* 1.3 .8 162
GRASSY LAKE 7265 .1 .3 33* 1.5 1.6 94
GROS VENTRE SUMMIT 8750 .7 .6 117* 1.8 .9 200
LEWIS LAKE DIVIDE 7850 .2 .1 200* 1.0 1.5 67
PHILLIPS BENCH 8200 .0 .2 0* 1.4 1.1 127
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .9 122
SNAKE RIVER STATION 6920 .0 .0 100* 1.6 1.0 160
SPRING CREEK DIVIDE 9000 .1 .3 33* 1.0 1.2 83
THUMB DIVIDE 7980 .1 .1 100* 1.9 .9 211
TOGWOTEE PASS 9580 1.6 1.0 160* 2.4 1.3 185
TWO OCEAN PLATEAU 9240 2.1 1.2 175* 2.8 1.4 200
WILLOW CREEK 8450 .1 .4 25* 1.9 1.7 112
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Basin wide percent of average 113* 139
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.0 1.3 154* 1.9 1.0 190
BLACK BEAR 8170 .8 .8 100* 2.2 1.6 138
CANYON 8090 .4 .2 200* 2.0 .9 222
FISHER CREEK 9100 2.6 1.0 260* 3.0 1.5 200
MADISON PLATEAU 7750 .5 .4 125* 2.1 1.2 175
NORTHEAST ENTRANCE 7350 -M .1 * -M .7 *
PARKER PEAK 9400 1.7 1.2 142* 2.5 1.1 227
SYLVAN LAKE 8420 .1 .9 11* 2.2 1.2 183
THUMB DIVIDE 7980 .1 .1 100* 1.9 .9 211
TWO OCEAN PLATEAU 9240 2.1 1.2 175* 2.8 1.4 200
WHISKEY CREEK 6800 .2 .1 200* 2.2 1.0 220
WHITE MILL 8700 1.9 .7 271* 2.2 1.3 169
WOLVERINE 7650 .0 .1 0* 1.4 .9 156
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Basin wide percent of average 155* 189
WIND RIVER
BURROUGHS CREEK 8750 .3 .3 100* 1.5 .8 188
COLD SPRINGS 9630 .1 .2 50* 1.7 .9 189
DEER PARK 9700 .8 .8 100* 2.3 1.2 192
HOBBS PARK 10100 .9 .7 129* 2.3 1.0 230
LITTLE WARM 9370 .2 .4 50* 1.5 .8 188
SOUTH PASS 9040 .1 .4 25* 1.6 1.0 160
ST. LAWRENCE ALT 8620 .1 .1 100* 1.1 .8 138
TOGWOTEE PASS 9580 1.6 1.0 160* 2.4 1.3 185
TOWNSEND CREEK 8700 .0 .3 0* 2.0 1.0 200
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Basin wide percent of average 98* 186
BIGHORN BASIN
BALD MTN. 9380 1.3 1.5 87* 1.9 1.1 173
BEAR TRAP MEADOW 8200 .1 .2 50* .9 .8 112
BLACKWATER 9780 1.9 1.5 127* 2.3 1.3 177
BONE SPRINGS DIV 9350 -M 1.3 * -M 1.2 *
EVENING STAR 9200 1.7 1.2 142* 2.6 1.3 200
GRAVE SPRINGS 8550 .0 .2 0* 1.2 1.0 120
KIRWIN 9550 1.8 .8 225* 2.6 .9 289
MARQUETTE 8760 .0 .9 0* 1.5 1.1 136
MIDDLE POWDER 7760 .3 .6 50* .9 1.2 75
OWL CREEK 8975 .1 .3 33* 1.6 .5 320
POWDER RIVER PASS 9480 .1 .5 20* 1.8 .9 200
SHELL CREEK 9580 1.6 1.6 100* 2.5 .9 278
SYLVAN LAKE 8420 .1 .9 11* 2.2 1.2 183
SYLVAN ROAD 7120 .0 .1 0* 2.0 1.0 200
TIMBER CREEK 7950 .1 .1 100* 2.1 .8 262
YOUNTS PEAK 8350 .8 .6 133* 1.9 .9 211
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Basin wide percent of average 90* 188
SHOSHONE RIVER
BLACKWATER 9780 1.9 1.5 127* 2.3 1.3 177
EVENING STAR 9200 1.7 1.2 142* 2.6 1.3 200
KIRWIN 9550 1.8 .8 225* 2.6 .9 289
MARQUETTE 8760 .0 .9 0* 1.5 1.1 136
SYLVAN LAKE 8420 .1 .9 11* 2.2 1.2 183
SYLVAN ROAD 7120 .0 .1 0* 2.0 1.0 200
YOUNTS PEAK 8350 .8 .6 133* 1.9 .9 211
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Basin wide percent of average 105* 196
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .2 50* .9 .8 112
BIG GOOSE 7990 .2 .3 67* 1.6 1.0 160
BONE SPRINGS DIV 9350 -M 1.3 * -M 1.2 *
BURGESS JUNCTION 7880 .0 .6 0* 1.2 1.0 120
CLOUD PEAK RESERVOIR 9860 .9 .4 225* 2.5 1.2 208
DOME LAKE 8880 .2 .7 29* 2.1 1.2 175
GRAVE SPRINGS 8550 .0 .2 0* 1.2 1.0 120
HANSEN SAWMILL 8360 .3 .2 150* 1.6 .9 178
MIDDLE POWDER 7760 .3 .6 50* .9 1.2 75
POWDER RIVER PASS 9480 .1 .5 20* 1.8 .9 200
SUCKER CREEK 8880 .1 .5 20* 1.0 1.1 91
TIE CREEK 6870 .0 .0 100* 1.2 1.2 100
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Basin wide percent of average 52* 139
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .7 1.2 58
COLE CANYON 5910 .0 .0 100* .5 -M *
NORTH RAPID CREEK 6130 -M .1 * .6 1.2 50
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Basin wide percent of average * 54
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100* 2.0 1.1 182
DIVIDE PEAK 8860 -M .7 * -M 1.3 *
ELK RIVER 8700 .0 .1 0* 1.4 1.0 140
JOE WRIGHT 10120 1.4 .8 175* 3.2 1.6 200
NORTH FRENCH CREEK 10130 .3 1.4 21* 1.7 1.6 106
OLD BATTLE 9920 .8 1.1 73* 2.3 1.7 135
SAGE CREEK BASIN 7850 .0 .3 0* 1.4 .7 200
SOUTH BRUSH CREEK 8440 .1 .2 50* 1.3 1.2 108
TOWER 10500 .4 1.0 40* 2.3 1.9 121
WEBBER SPRINGS 9250 .4 .5 80* 2.0 1.4 143
WILLOW CREEK PASS 9540 1.0 .3 333* 1.6 .9 178
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Basin wide percent of average 77* 147
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .2 .9 22* 1.2 1.2 100
CASPER MTN. 7850 .0 .6 0* 1.4 1.2 117
DEADMAN HILL 10220 1.9 .9 211* 2.1 1.2 175
DEER PARK 9700 .8 .8 100* 2.3 1.2 192
LAPRELE CREEK 8375 .0 .3 0* .7 .9 78
RENO HILL 8500 .2 .7 29* 1.2 1.2 100
ROACH 9700 1.2 .3 400* 2.1 1.1 191
SAND LAKE 10050 1.6 1.3 123* 2.2 1.4 157
SOUTH PASS 9040 .1 .4 25* 1.6 1.0 160
WINDY PEAK 7900 .0 .1 0* .6 .8 75
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Basin wide percent of average 95* 137
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .8 .9 89
DIVIDE PEAK 8860 -M .7 * -M 1.3 *
OLD BATTLE 9920 .8 1.1 73* 2.3 1.7 135
SANDSTONE RS 8150 .0 .1 0* .9 1.1 82
WHISKEY PARK 8950 .0 .5 0* 1.6 1.4 114
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Basin wide percent of average 47* 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .2 .4 50* 1.3 .9 144
BLIND BULL SUM 8900 .0 .4 0* .9 1.0 90
EAST RIM DIVIDE 7930 .0 .0 100* 1.1 .6 183
ELKHART PARK G.S. 9400 .0 .2 0* 1.3 .9 144
GROS VENTRE SUMMIT 8750 .7 .6 117* 1.8 .9 200
KENDALL R.S. 7740 .1 .0 * 1.0 .7 143
LOOMIS PARK 8240 .0 .2 0* 1.1 .9 122
NEW FORK LAKE 8340 .0 .0 100* 1.1 .7 157
SNIDER BASIN 8060 .2 .1 200* .6 .8 75
SPRING CREEK DIVIDE 9000 .1 .3 33* 1.0 1.2 83
TRIPLE PEAK 8500 .1 .2 50* .9 1.0 90
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Basin wide percent of average 54* 126
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .8 .7 114
HEWINTA 9500 .0 .4 0* 3.1 1.1 282
HICKERSON PARK 9100 -M .0 * -M .8 *
HOLE-IN-ROCK 9150 .0 .0 100* 2.8 .8 350
INDIAN CREEK 9425 .1 .4 25* 1.2 1.2 100
KELLEY R.S. 8180 .0 .2 0* 1.5 1.0 150
STEEL CREEK PARK 10100 2.2 .8 275* 3.1 1.1 282
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Basin wide percent of average 128* 212
UPPER BEAR RIVER
BUG LAKE 7950 .1 .5 20* .5 1.1 45
HAYDEN FORK 9100 .1 .4 25* 1.5 1.1 136
KELLEY R.S. 8180 .0 .2 0* 1.5 1.0 150
LILY LAKE 9050 .0 .4 0* 2.1 1.1 191
MONTE CRISTO 8960 .0 .7 0* 1.5 1.3 115
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .9 122
TRIAL LAKE 9960 .0 .8 0* 1.0 1.3 77
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Basin wide percent of average 7* 118
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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 1971-2000.
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.