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 29 , 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 1.0 .6 167* 5.0 1.9 263
COTTONWOOD CREEK 7600 1.8 .8 225* 5.0 2.8 179
GRANITE CREEK 6770 1.1 .5 220* 4.1 1.6 256
GRASSY LAKE 7265 1.1 1.3 85* 5.8 3.2 181
GROS VENTRE SUMMIT 8750 2.1 1.3 162* 3.9 1.7 229
LEWIS LAKE DIVIDE 7850 1.2 1.1 109* 5.6 3.0 187
PHILLIPS BENCH 8200 1.5 1.3 115* 5.0 2.3 217
SALT RIVER SUMMIT 7600 .1 .3 33* 2.6 1.8 144
SNAKE RIVER STATION 6920 .0 .5 0* 4.6 2.1 219
SPRING CREEK DIVIDE 9000 1.8 1.4 129* 3.3 2.4 138
THUMB DIVIDE 7980 .8 .8 100* 4.3 1.9 226
TOGWOTEE PASS 9580 4.5 2.4 188* 5.6 2.6 215
TWO OCEAN PLATEAU 9240 5.7 2.8 204* 6.1 2.9 210
WILLOW CREEK 8450 2.3 1.6 144* 6.4 3.4 188
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Basin wide percent of average 150* 200
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.5 2.5 180* 4.4 2.0 220
BLACK BEAR 8170 3.6 2.5 144* 5.9 3.3 179
CANYON 8090 1.2 .6 200* 4.0 1.7 235
FISHER CREEK 9100 5.6 2.5 224* 6.7 3.1 216
MADISON PLATEAU 7750 1.6 1.5 107* 4.7 2.3 204
NORTHEAST ENTRANCE 7350 -M .3 * -M 1.4 *
PARKER PEAK 9400 4.1 2.4 171* 5.2 2.2 236
SYLVAN LAKE 8420 2.0 1.8 111* 5.6 2.4 233
THUMB DIVIDE 7980 .8 .8 100* 4.3 1.9 226
TWO OCEAN PLATEAU 9240 5.7 2.8 204* 6.1 2.9 210
WHISKEY CREEK 6800 .9 .7 129* 4.3 2.1 205
WHITE MILL 8700 4.1 1.9 216* 5.0 2.5 200
WOLVERINE 7650 .1 .4 25* 3.3 1.7 194
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Basin wide percent of average 168* 212
WIND RIVER
BURROUGHS CREEK 8750 2.0 .9 222* 3.9 1.5 260
COLD SPRINGS 9630 .2 .9 22 2.3 1.8 128
DEER PARK 9700 1.4 2.4 58 3.1 2.3 135
HOBBS PARK 10100 1.4 2.0 70 3.2 2.0 160
LITTLE WARM 9370 1.2 1.0 120* 3.1 1.6 194
SOUTH PASS 9040 .2 1.4 14* 2.2 2.0 110
ST. LAWRENCE ALT 8620 .2 .8 25 1.4 1.6 87
TOGWOTEE PASS 9580 4.5 2.4 188* 5.6 2.6 215
TOWNSEND CREEK 8700 .2 1.0 20* 2.5 2.0 125
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Basin wide percent of average 88* 157
BIGHORN BASIN
BALD MTN. 9380 3.0 2.6 115 3.6 2.3 157
BEAR TRAP MEADOW 8200 .6 .5 120 1.9 1.6 119
BLACKWATER 9780 5.1 2.9 176 4.9 2.5 196
BONE SPRINGS DIV 9350 2.2 2.5 88 3.9 2.3 170
EVENING STAR 9200 4.0 2.5 160* 6.2 2.6 238
GRAVE SPRINGS 8550 1.1 1.0 110* 2.5 2.0 125
KIRWIN 9550 3.4 1.7 200 4.6 1.7 271
MARQUETTE 8760 .7 1.8 39 3.0 2.2 136
MIDDLE POWDER 7760 1.8 1.2 150* 2.4 2.4 100
OWL CREEK 8975 .6 .8 75 2.3 1.1 209
POWDER RIVER PASS 9480 1.2 1.2 100* 3.1 1.8 172
SHELL CREEK 9580 3.9 2.5 156 4.6 1.9 242
SYLVAN LAKE 8420 2.0 1.8 111* 5.6 2.4 233
SYLVAN ROAD 7120 .2 .4 50* 5.0 2.0 250
TIMBER CREEK 7950 .1 .9 11 3.0 1.5 200
YOUNTS PEAK 8350 2.1 1.3 162* 5.3 1.7 312
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Basin wide percent of average 125 193
SHOSHONE RIVER
BLACKWATER 9780 5.1 2.9 176 4.9 2.5 196
EVENING STAR 9200 4.0 2.5 160* 6.2 2.6 238
KIRWIN 9550 3.4 1.7 200 4.6 1.7 271
MARQUETTE 8760 .7 1.8 39 3.0 2.2 136
SYLVAN LAKE 8420 2.0 1.8 111* 5.6 2.4 233
SYLVAN ROAD 7120 .2 .4 50* 5.0 2.0 250
YOUNTS PEAK 8350 2.1 1.3 162* 5.3 1.7 312
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Basin wide percent of average 141* 229
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .6 .5 120 1.9 1.6 119
BIG GOOSE 7990 1.5 .8 188* 4.1 2.0 205
BONE SPRINGS DIV 9350 2.2 2.5 88 3.9 2.3 170
BURGESS JUNCTION 7880 1.4 1.4 100 3.3 2.1 157
CLOUD PEAK RESERVOIR 9860 2.7 1.4 193* 5.0 2.4 208
DOME LAKE 8880 1.9 1.7 112 4.4 2.3 191
GRAVE SPRINGS 8550 1.1 1.0 110* 2.5 2.0 125
HANSEN SAWMILL 8360 .7 .8 87 2.8 1.7 165
MIDDLE POWDER 7760 1.8 1.2 150* 2.4 2.4 100
POWDER RIVER PASS 9480 1.2 1.2 100* 3.1 1.8 172
SUCKER CREEK 8880 1.7 1.2 142* 3.7 2.3 161
TIE CREEK 6870 .0 .7 0 2.9 2.3 126
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Basin wide percent of average 117 159
BELLE FOURCHE
BLIND PARK 6890 .1 .5 20* 1.5 2.4 62
COLE CANYON 5910 .0 .7 0 1.1 -M *
NORTH RAPID CREEK 6130 .0 .4 0* 1.1 2.3 48
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Basin wide percent of average 6* 55
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .7 0* 3.5 2.3 152
DIVIDE PEAK 8860 1.1 1.6 69* 2.6 2.5 104
ELK RIVER 8700 -M .6 * 3.1 2.1 148
JOE WRIGHT 10120 2.2 2.4 92* 4.8 3.2 150
NORTH FRENCH CREEK 10130 2.2 3.0 73* 3.8 3.2 119
OLD BATTLE 9920 2.5 2.8 89* 4.2 3.3 127
SAGE CREEK BASIN 7850 .0 .9 0* 2.1 1.4 150
SOUTH BRUSH CREEK 8440 .9 .7 129* 3.1 2.4 129
TOWER 10500 2.7 3.2 84* 4.8 3.7 130
WEBBER SPRINGS 9250 1.3 1.7 76* 3.5 2.9 121
WILLOW CREEK PASS 9540 2.1 1.0 210* 2.9 1.9 153
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Basin wide percent of average 83* 133
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.1 2.1 52* 2.5 2.3 109
CASPER MTN. 7850 1.3 1.6 81* 3.3 2.3 143
DEADMAN HILL 10220 2.5 2.1 119 3.3 2.3 143
DEER PARK 9700 1.4 2.4 58 3.1 2.3 135
LAPRELE CREEK 8375 .6 1.0 60* 2.2 1.8 122
RENO HILL 8500 1.9 1.6 119 3.6 2.3 157
ROACH 9700 1.8 1.1 164* 3.2 2.2 145
SAND LAKE 10050 3.6 3.0 120* 4.2 2.9 145
SOUTH PASS 9040 .2 1.4 14* 2.2 2.0 110
WINDY PEAK 7900 .6 .5 120* 1.7 1.6 106
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Basin wide percent of average 89* 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .5 * 2.0 1.8 111
DIVIDE PEAK 8860 1.1 1.6 69* 2.6 2.5 104
OLD BATTLE 9920 2.5 2.8 89* 4.2 3.3 127
SANDSTONE RS 8150 .0 .5 0* 2.2 2.2 100
WHISKEY PARK 8950 .9 1.6 56* 3.7 2.7 137
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Basin wide percent of average 69* 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.2 1.1 109* 2.0 1.7 118
BLIND BULL SUM 8900 1.7 1.6 106* 3.1 2.1 148
EAST RIM DIVIDE 7930 .0 .6 0* 2.1 1.3 162
ELKHART PARK G.S. 9400 1.1 .8 138* 2.5 1.8 139
GROS VENTRE SUMMIT 8750 2.1 1.3 162* 3.9 1.7 229
KENDALL R.S. 7740 .2 .6 33* 2.3 1.4 164
LOOMIS PARK 8240 .9 .9 100* 2.4 1.7 141
NEW FORK LAKE 8340 .5 .5 100* 2.1 1.4 150
SNIDER BASIN 8060 .1 .7 14* 1.7 1.5 113
SPRING CREEK DIVIDE 9000 1.8 1.4 129* 3.3 2.4 138
TRIPLE PEAK 8500 1.5 1.1 136* 4.4 2.1 210
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Basin wide percent of average 105* 156
LOWER GREEN RIVER
HAMS FORK 7840 .0 .4 0* 1.6 1.4 114
HEWINTA 9500 .0 .8 0* 4.3 2.3 187
HICKERSON PARK 9100 .3 .4 75* 2.9 1.6 181
HOLE-IN-ROCK 9150 .2 .4 50* 3.4 1.5 227
INDIAN CREEK 9425 1.7 1.4 121* 2.7 2.4 113
KELLEY R.S. 8180 .5 .9 56* 2.8 2.0 140
STEEL CREEK PARK 10100 3.7 1.5 247* 4.6 2.2 209
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Basin wide percent of average 110* 166
UPPER BEAR RIVER
BUG LAKE 7950 .1 1.2 8* 1.5 2.2 68
HAYDEN FORK 9100 .2 .8 25* 3.4 2.3 148
KELLEY R.S. 8180 .5 .9 56* 2.8 2.0 140
LILY LAKE 9050 .2 .9 22* 3.5 2.3 152
MONTE CRISTO 8960 .1 1.5 7* 3.3 2.6 127
SALT RIVER SUMMIT 7600 .1 .3 33* 2.6 1.8 144
TRIAL LAKE 9960 1.2 1.8 67* 2.7 2.6 104
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Basin wide percent of average 32* 125
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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.