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 25 , 2004
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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 .5 200* 2.1 1.6 131
COTTONWOOD CREEK 7600 .9 .6 150* 2.6 2.4 108
GRANITE CREEK 6770 1.3 .4 325* 3.0 1.4 214
GRASSY LAKE 7265 2.3 1.0 230* 3.0 2.7 111
GROS VENTRE SUMMIT 8750 1.7 1.1 155* 2.1 1.5 140
LEWIS LAKE DIVIDE 7850 3.5 .8 438* 4.0 2.6 154
PHILLIPS BENCH 8200 2.5 1.0 250* 3.1 1.9 163
SALT RIVER SUMMIT 7600 1.1 .2 550* 2.7 1.5 180
SNAKE RIVER STATION 6920 .6 .4 150* 2.3 1.8 128
SPRING CREEK DIVIDE 9000 2.9 1.1 264* 3.3 2.1 157
THUMB DIVIDE 7980 1.7 .6 283* 2.1 1.6 131
TOGWOTEE PASS 9580 2.0 2.0 100* 2.2 2.2 100
TWO OCEAN PLATEAU 9240 3.3 2.4 138* 3.2 2.5 128
WILLOW CREEK 8450 2.0 1.3 154* 3.3 2.9 114
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Basin wide percent of average 200* 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.7 2.1 81* 2.1 1.7 124
BLACK BEAR 8170 5.0 2.0 250* 5.5 2.8 196
CANYON 8090 .9 .5 180* 1.8 1.5 120
FISHER CREEK 9100 2.5 2.1 119* 3.2 2.6 123
MADISON PLATEAU 7750 2.7 1.2 225* 3.7 2.0 185
NORTHEAST ENTRANCE 7350 .2 .2 100* .9 1.2 75
PARKER PEAK 9400 1.7 2.0 85* 1.8 1.9 95
SYLVAN LAKE 8420 1.5 1.5 100* 2.4 2.1 114
THUMB DIVIDE 7980 1.7 .6 283* 2.1 1.6 131
TWO OCEAN PLATEAU 9240 3.3 2.4 138* 3.2 2.5 128
WHISKEY CREEK 6800 1.5 .5 300* 3.0 1.8 167
WHITE MILL 8700 1.4 1.5 93* 2.0 2.2 91
WOLVERINE 7650 .3 .3 100* 1.2 1.5 80
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Basin wide percent of average 144* 130
WIND RIVER
BURROUGHS CREEK 8750 1.0 .7 143* 1.1 1.3 85
COLD SPRINGS 9630 1.1 .7 157* 1.7 1.5 113
DEER PARK 9700 -M 1.9 * -M 2.0 *
HOBBS PARK 10100 2.6 1.6 162* 2.6 1.7 153
LITTLE WARM 9370 1.1 .8 138* 1.4 1.4 100
SOUTH PASS 9040 2.7 1.1 245* 3.6 1.7 212
ST. LAWRENCE ALT 8620 .5 .6 83* 1.5 1.4 107
TOGWOTEE PASS 9580 2.0 2.0 100* 2.2 2.2 100
TOWNSEND CREEK 8700 .8 .8 100* 2.8 1.7 165
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Basin wide percent of average 142* 131
BIGHORN BASIN
BALD MTN. 9380 2.8 2.3 122* 2.8 1.9 147
BEAR TRAP MEADOW 8200 .4 .4 100* 2.0 1.4 143
BLACKWATER 9780 2.1 2.5 84* 2.1 2.2 95
BONE SPRINGS DIV 9350 3.2 2.1 152 3.1 2.0 155
EVENING STAR 9200 2.0 2.1 95* 2.9 2.2 132
GRAVE SPRINGS 8550 .4 .8 50* 1.3 1.7 76
KIRWIN 9550 1.5 1.4 107 1.2 1.5 80
MARQUETTE 8760 .1 1.5 7 .7 1.9 37
MIDDLE POWDER 7760 .4 1.0 40* 1.7 2.1 81
OWL CREEK 8975 .0 .7 0 .3 .9 33
POWDER RIVER PASS 9480 2.5 1.0 250* 3.0 1.5 200
SHELL CREEK 9580 2.8 2.2 127 2.7 1.6 169
SYLVAN LAKE 8420 1.5 1.5 100* 2.4 2.1 114
SYLVAN ROAD 7120 .4 .3 133* 2.0 1.7 118
TIMBER CREEK 7950 .0 .7 0 .5 1.3 38
YOUNTS PEAK 8350 1.1 1.1 100* 2.0 1.5 133
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Basin wide percent of average 98* 112
SHOSHONE RIVER
BLACKWATER 9780 2.1 2.5 84* 2.1 2.2 95
EVENING STAR 9200 2.0 2.1 95* 2.9 2.2 132
KIRWIN 9550 1.5 1.4 107 1.2 1.5 80
MARQUETTE 8760 .1 1.5 7 .7 1.9 37
SYLVAN LAKE 8420 1.5 1.5 100* 2.4 2.1 114
SYLVAN ROAD 7120 .4 .3 133* 2.0 1.7 118
YOUNTS PEAK 8350 1.1 1.1 100* 2.0 1.5 133
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Basin wide percent of average 84* 102
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .4 100* 2.0 1.4 143
BIG GOOSE 7990 .2 .7 29* 1.6 1.7 94
BONE SPRINGS DIV 9350 3.2 2.1 152 3.1 2.0 155
BURGESS JUNCTION 7880 .5 1.2 42* 1.8 1.8 100
CLOUD PEAK RESERVOIR 9860 1.5 1.1 136* 2.0 2.1 95
DOME LAKE 8880 1.6 1.4 114 2.7 2.0 135
GRAVE SPRINGS 8550 .4 .8 50* 1.3 1.7 76
HANSEN SAWMILL 8360 .3 .6 50* 1.3 1.5 87
MIDDLE POWDER 7760 .4 1.0 40* 1.7 2.1 81
POWDER RIVER PASS 9480 2.5 1.0 250* 3.0 1.5 200
SUCKER CREEK 8880 1.9 1.0 190* 2.6 1.9 137
TIE CREEK 6870 .2 .5 40* 1.7 2.0 85
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Basin wide percent of average 111* 114
BELLE FOURCHE
BLIND PARK 6890 .0 .4 0* 1.3 2.1 62
COLE CANYON 5910 .0 .5 0* .9 -M *
NORTH RAPID CREEK 6130 .0 .3 0* 1.0 2.0 50
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Basin wide percent of average 0* 56
UPPER N. PLATTE RIVER
COLUMBINE 9160 .7 .5 140* 2.1 1.9 111
DIVIDE PEAK 8860 1.7 1.3 131* 3.9 2.2 177
ELK RIVER 8700 .6 .5 120* 2.5 1.8 139
JOE WRIGHT 10120 3.1 1.9 163* 1.1 2.7 41
NORTH FRENCH CREEK 10130 2.3 2.5 92* 2.6 2.7 96
OLD BATTLE 9920 4.9 2.3 213* 5.9 2.9 203
SAGE CREEK BASIN 7850 .9 .7 129* 3.6 1.2 300
SOUTH BRUSH CREEK 8440 .6 .6 100* 1.4 2.1 67
TOWER 10500 4.9 2.6 188* 3.7 3.2 116
WEBBER SPRINGS 9250 2.9 1.4 207* 4.2 2.5 168
WILLOW CREEK PASS 9540 1.0 .8 125* 1.5 1.6 94
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Basin wide percent of average 156* 131
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .5 1.7 29* 1.4 2.0 70
CASPER MTN. 7850 .0 1.3 0* 1.4 2.0 70
DEADMAN HILL 10220 2.8 1.7 165* 1.8 2.0 90
DEER PARK 9700 -M 1.9 * -M 2.0 *
LAPRELE CREEK 8375 .1 .8 12* 1.4 1.5 93
RENO HILL 8500 .2 1.3 15* 1.1 2.0 55
ROACH 9700 .7 .9 78* 4.8 1.9 253
SAND LAKE 10050 3.5 2.5 140* 2.4 2.5 96
SOUTH PASS 9040 2.7 1.1 245* 3.6 1.7 212
WINDY PEAK 7900 .0 .4 0* .9 1.4 64
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Basin wide percent of average 90* 111
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .6 .4 150* 2.1 1.5 140
DIVIDE PEAK 8860 1.7 1.3 131* 3.9 2.2 177
OLD BATTLE 9920 4.9 2.3 213* 5.9 2.9 203
SANDSTONE RS 8150 .0 .4 0* 2.3 1.9 121
WHISKEY PARK 8950 1.7 1.3 131* 2.7 2.3 117
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Basin wide percent of average 156* 156
UPPER GREEN RIVER
BIG SANDY OPENING 9080 -M .9 * 4.1 1.5 273
BLIND BULL SUM 8900 2.2 1.2 183* 2.4 1.8 133
EAST RIM DIVIDE 7930 .4 .4 100* 1.2 1.1 109
ELKHART PARK G.S. 9400 2.5 .6 417* 3.2 1.5 213
GROS VENTRE SUMMIT 8750 1.7 1.1 155* 2.1 1.5 140
KENDALL R.S. 7740 1.2 .4 300* 2.4 1.2 200
LOOMIS PARK 8240 1.6 .7 229* 2.3 1.5 153
NEW FORK LAKE 8340 .8 .4 200* 1.3 1.2 108
SNIDER BASIN 8060 1.5 .5 300* 2.2 1.3 169
SPRING CREEK DIVIDE 9000 2.9 1.1 264* 3.3 2.1 157
TRIPLE PEAK 8500 1.2 .8 150* 2.1 1.8 117
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Basin wide percent of average 222* 161
LOWER GREEN RIVER
HAMS FORK 7840 1.1 .3 367* 2.6 1.2 217
HEWINTA 9500 .5 .7 71* 2.1 1.9 111
HICKERSON PARK 9100 1.1 .3 367* 2.6 1.4 186
HOLE-IN-ROCK 9150 .9 .3 300* 2.3 1.3 177
INDIAN CREEK 9425 3.7 1.1 336* 3.8 2.1 181
KELLEY R.S. 8180 2.7 .7 386* 3.4 1.7 200
STEEL CREEK PARK 10100 2.4 1.3 185* 2.5 1.9 132
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Basin wide percent of average 264* 168
UPPER BEAR RIVER
BUG LAKE 7950 1.7 1.0 170* 3.4 1.9 179
HAYDEN FORK 9100 2.4 .7 343* 4.7 1.9 247
KELLEY R.S. 8180 2.7 .7 386* 3.4 1.7 200
LILY LAKE 9050 1.6 .8 200* 3.7 1.9 195
MONTE CRISTO 8960 4.1 1.3 315* 4.6 2.2 209
SALT RIVER SUMMIT 7600 1.1 .2 550* 2.7 1.5 180
TRIAL LAKE 9960 4.7 1.5 313* 6.0 2.2 273
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Basin wide percent of average 295* 214
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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.