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 WEDNESDAY: OCTOBER 31 , 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 .8 .7 114* 5.3 2.0 265
COTTONWOOD CREEK 7600 1.7 .9 189* 5.1 3.0 170
GRANITE CREEK 6770 .8 .6 133* 4.2 1.7 247
GRASSY LAKE 7265 1.2 1.4 86* 6.7 3.4 197
GROS VENTRE SUMMIT 8750 2.2 1.4 157* 4.0 1.8 222
LEWIS LAKE DIVIDE 7850 1.3 1.2 108* 6.0 3.2 188
PHILLIPS BENCH 8200 1.3 1.4 93* 5.3 2.4 221
SALT RIVER SUMMIT 7600 .0 .4 0* 2.5 1.9 132
SNAKE RIVER STATION 6920 .0 .6 0* 5.2 2.2 236
SPRING CREEK DIVIDE 9000 1.9 1.5 127* 3.4 2.6 131
THUMB DIVIDE 7980 .5 .9 56* 4.5 2.0 225
TOGWOTEE PASS 9580 4.8 2.6 185* 5.8 2.8 207
TWO OCEAN PLATEAU 9240 6.2 3.1 200* 6.5 3.1 210
WILLOW CREEK 8450 2.2 1.8 122* 6.8 3.7 184
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Basin wide percent of average 135* 199
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.9 2.6 188 4.7 2.1 224
BLACK BEAR 8170 4.3 2.8 154* 6.8 3.5 194
CANYON 8090 1.4 .7 200* 4.2 1.8 233
FISHER CREEK 9100 5.9 2.7 219* 7.0 3.3 212
MADISON PLATEAU 7750 1.7 1.6 106* 5.0 2.5 200
NORTHEAST ENTRANCE 7350 .0 .3 0* 3.3 1.5 220
PARKER PEAK 9400 4.7 2.5 188 5.7 2.3 248
SYLVAN LAKE 8420 2.0 1.9 105* 6.0 2.6 231
THUMB DIVIDE 7980 .5 .9 56* 4.5 2.0 225
TWO OCEAN PLATEAU 9240 6.2 3.1 200* 6.5 3.1 210
WHISKEY CREEK 6800 .9 .8 112* 4.5 2.2 205
WHITE MILL 8700 4.3 2.0 215* 5.4 2.7 200
WOLVERINE 7650 .2 .5 40* 3.6 1.8 200
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Basin wide percent of average 165* 214
WIND RIVER
BURROUGHS CREEK 8750 2.1 1.0 210* 4.2 1.6 262
COLD SPRINGS 9630 .0 1.0 0 2.4 1.9 126
DEER PARK 9700 1.7 2.6 65 3.2 2.5 128
HOBBS PARK 10100 1.5 2.2 68 3.2 2.1 152
LITTLE WARM 9370 1.2 1.1 109* 3.1 1.7 182
SOUTH PASS 9040 .1 1.5 7* 2.4 2.1 114
ST. LAWRENCE ALT 8620 .0 .9 0 1.5 1.7 88
TOGWOTEE PASS 9580 4.8 2.6 185* 5.8 2.8 207
TOWNSEND CREEK 8700 .2 1.1 18 2.6 2.1 124
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Basin wide percent of average 83 154
BIGHORN BASIN
BALD MTN. 9380 3.1 2.7 115 3.6 2.4 150
BEAR TRAP MEADOW 8200 .1 .6 17 2.1 1.7 124
BLACKWATER 9780 5.2 3.1 168 4.9 2.7 181
BONE SPRINGS DIV 9350 2.6 2.6 100 4.1 2.5 164
EVENING STAR 9200 4.3 2.7 159* 6.5 2.8 232
GRAVE SPRINGS 8550 1.3 1.1 118 2.8 2.1 133
KIRWIN 9550 3.6 1.8 200 5.0 1.8 278
MARQUETTE 8760 .2 1.9 11 3.1 2.3 135
MIDDLE POWDER 7760 1.9 1.3 146* 2.8 2.6 108
OWL CREEK 8975 .9 .9 100 2.6 1.2 217
POWDER RIVER PASS 9480 1.6 1.3 123 3.5 1.9 184
SHELL CREEK 9580 4.4 2.6 169 5.0 2.0 250
SYLVAN LAKE 8420 2.0 1.9 105* 6.0 2.6 231
SYLVAN ROAD 7120 .0 .5 0* 5.2 2.1 248
TIMBER CREEK 7950 .3 1.0 30 3.5 1.6 219
YOUNTS PEAK 8350 2.2 1.4 157* 5.5 1.8 306
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Basin wide percent of average 123 194
SHOSHONE RIVER
BLACKWATER 9780 5.2 3.1 168 4.9 2.7 181
EVENING STAR 9200 4.3 2.7 159* 6.5 2.8 232
KIRWIN 9550 3.6 1.8 200 5.0 1.8 278
MARQUETTE 8760 .2 1.9 11 3.1 2.3 135
SYLVAN LAKE 8420 2.0 1.9 105* 6.0 2.6 231
SYLVAN ROAD 7120 .0 .5 0* 5.2 2.1 248
YOUNTS PEAK 8350 2.2 1.4 157* 5.5 1.8 306
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Basin wide percent of average 132* 225
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .6 17 2.1 1.7 124
BIG GOOSE 7990 1.5 .9 167* 4.2 2.1 200
BONE SPRINGS DIV 9350 2.6 2.6 100 4.1 2.5 164
BURGESS JUNCTION 7880 1.5 1.5 100 3.5 2.2 159
CLOUD PEAK RESERVOIR 9860 3.1 1.5 207* 5.2 2.6 200
DOME LAKE 8880 2.0 1.8 111 4.6 2.5 184
GRAVE SPRINGS 8550 1.3 1.1 118 2.8 2.1 133
HANSEN SAWMILL 8360 .5 .9 56 3.3 1.8 183
MIDDLE POWDER 7760 1.9 1.3 146* 2.8 2.6 108
POWDER RIVER PASS 9480 1.6 1.3 123 3.5 1.9 184
SUCKER CREEK 8880 1.9 1.3 146* 3.9 2.4 162
TIE CREEK 6870 .1 .8 12 3.1 2.5 124
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Basin wide percent of average 116 160
BELLE FOURCHE
BLIND PARK 6890 .0 .6 0* 1.5 2.6 58
COLE CANYON 5910 .0 .8 0 1.1 -M *
NORTH RAPID CREEK 6130 .0 .5 0* 1.1 2.5 44
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Basin wide percent of average 0* 51
UPPER N. PLATTE RIVER
COLUMBINE 9160 .2 .8 25* 3.9 2.4 162
DIVIDE PEAK 8860 1.5 1.7 88* 3.2 2.7 119
ELK RIVER 8700 .6 .7 86* 3.4 2.2 155
JOE WRIGHT 10120 2.3 2.6 88 5.1 3.4 150
NORTH FRENCH CREEK 10130 3.2 3.2 100* 4.6 3.4 135
OLD BATTLE 9920 2.9 3.1 94* 4.7 3.6 131
SAGE CREEK BASIN 7850 .1 1.0 10* 2.7 1.5 180
SOUTH BRUSH CREEK 8440 1.2 .8 150* 3.7 2.6 142
TOWER 10500 3.3 3.5 94* 5.0 4.0 125
WEBBER SPRINGS 9250 1.5 1.9 79* 3.8 3.1 123
WILLOW CREEK PASS 9540 2.3 1.1 209* 3.1 2.0 155
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Basin wide percent of average 94* 140
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.6 2.2 73* 2.9 2.5 116
CASPER MTN. 7850 1.2 1.7 71 3.6 2.5 144
DEADMAN HILL 10220 2.6 2.2 118 3.5 2.5 140
DEER PARK 9700 1.7 2.6 65 3.2 2.5 128
LAPRELE CREEK 8375 .3 1.1 27* 2.2 1.9 116
RENO HILL 8500 2.1 1.7 124 4.0 2.5 160
ROACH 9700 1.9 1.2 158* 3.4 2.3 148
SAND LAKE 10050 4.3 3.3 130* 5.1 3.1 165
SOUTH PASS 9040 .1 1.5 7* 2.4 2.1 114
WINDY PEAK 7900 .5 .6 83* 1.7 1.7 100
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Basin wide percent of average 90* 136
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .6 * 2.4 1.9 126
DIVIDE PEAK 8860 1.5 1.7 88* 3.2 2.7 119
OLD BATTLE 9920 2.9 3.1 94* 4.7 3.6 131
SANDSTONE RS 8150 .0 .6 0* 2.4 2.3 104
WHISKEY PARK 8950 1.3 1.7 76* 4.2 2.9 145
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Basin wide percent of average 80* 126
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.4 1.2 117* 2.1 1.8 117
BLIND BULL SUM 8900 1.8 1.7 106* 3.2 2.2 145
EAST RIM DIVIDE 7930 .0 .7 0* 2.0 1.4 143
ELKHART PARK G.S. 9400 1.1 .9 122* 2.4 1.9 126
GROS VENTRE SUMMIT 8750 2.2 1.4 157* 4.0 1.8 222
KENDALL R.S. 7740 .2 .7 29* 2.3 1.5 153
LOOMIS PARK 8240 .7 1.0 70* 2.4 1.8 133
NEW FORK LAKE 8340 .3 .6 50* 2.1 1.5 140
SNIDER BASIN 8060 .1 .8 12* 1.8 1.6 112
SPRING CREEK DIVIDE 9000 1.9 1.5 127* 3.4 2.6 131
TRIPLE PEAK 8500 1.5 1.2 125* 4.6 2.2 209
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Basin wide percent of average 96* 149
LOWER GREEN RIVER
HAMS FORK 7840 .0 .5 0* 1.6 1.5 107
HEWINTA 9500 .0 .9 0* 4.5 2.4 188
HICKERSON PARK 9100 .3 .5 60* 2.9 1.7 171
HOLE-IN-ROCK 9150 .4 .5 80* 3.4 1.6 212
INDIAN CREEK 9425 1.7 1.5 113* 2.8 2.6 108
KELLEY R.S. 8180 .2 1.0 20* 2.9 2.1 138
STEEL CREEK PARK 10100 4.1 1.6 256* 4.7 2.3 204
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Basin wide percent of average 103* 161
UPPER BEAR RIVER
BUG LAKE 7950 .1 1.3 8* 1.4 2.3 61
HAYDEN FORK 9100 .3 .9 33* 3.6 2.4 150
KELLEY R.S. 8180 .2 1.0 20* 2.9 2.1 138
LILY LAKE 9050 .3 1.0 30* 3.8 2.4 158
MONTE CRISTO 8960 .0 1.6 0* 2.9 2.8 104
SALT RIVER SUMMIT 7600 .0 .4 0* 2.5 1.9 132
TRIAL LAKE 9960 1.3 1.9 68* 2.9 2.8 104
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Basin wide percent of average 27* 120
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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.