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 SUNDAY: OCTOBER 31 , 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 1.9 .7 271* 3.3 2.0 165
COTTONWOOD CREEK 7600 2.2 .9 244* 4.2 3.0 140
GRANITE CREEK 6770 1.8 .6 300* 4.2 1.7 247
GRASSY LAKE 7265 3.9 1.4 279* 5.1 3.4 150
GROS VENTRE SUMMIT 8750 2.4 1.4 171* 2.6 1.8 144
LEWIS LAKE DIVIDE 7850 4.4 1.2 367* 5.2 3.2 162
PHILLIPS BENCH 8200 3.5 1.4 250* 4.3 2.4 179
SALT RIVER SUMMIT 7600 1.7 .4 425* 3.8 1.9 200
SNAKE RIVER STATION 6920 1.2 .6 200* 3.0 2.2 136
SPRING CREEK DIVIDE 9000 4.9 1.5 327* 5.4 2.6 208
THUMB DIVIDE 7980 2.0 .9 222* 2.7 2.0 135
TOGWOTEE PASS 9580 3.1 2.6 119* 3.3 2.8 118
TWO OCEAN PLATEAU 9240 5.1 3.1 165* 4.6 3.1 148
WILLOW CREEK 8450 3.9 1.8 217* 5.4 3.7 146
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Basin wide percent of average 227* 159
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.8 2.6 108 3.0 2.1 143
BLACK BEAR 8170 6.7 2.8 239* 7.1 3.5 203
CANYON 8090 1.4 .7 200* 2.4 1.8 133
FISHER CREEK 9100 3.7 2.7 137* 4.5 3.3 136
MADISON PLATEAU 7750 3.5 1.6 219* 4.7 2.5 188
NORTHEAST ENTRANCE 7350 .4 .3 133* 1.4 1.5 93
PARKER PEAK 9400 2.6 2.5 104 2.7 2.3 117
SYLVAN LAKE 8420 2.9 1.9 153* 4.1 2.6 158
THUMB DIVIDE 7980 2.0 .9 222* 2.7 2.0 135
TWO OCEAN PLATEAU 9240 5.1 3.1 165* 4.6 3.1 148
WHISKEY CREEK 6800 2.0 .8 250* 3.6 2.2 164
WHITE MILL 8700 2.5 2.0 125* 3.1 2.7 115
WOLVERINE 7650 .5 .5 100* 1.6 1.8 89
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Basin wide percent of average 161* 145
WIND RIVER
BURROUGHS CREEK 8750 1.6 1.0 160* 1.7 1.6 106
COLD SPRINGS 9630 1.3 1.0 130 1.8 1.9 95
DEER PARK 9700 5.7 2.6 219 6.6 2.5 264
HOBBS PARK 10100 2.8 2.2 127 3.0 2.1 143
LITTLE WARM 9370 1.5 1.1 136* 1.9 1.7 112
SOUTH PASS 9040 3.7 1.5 247* 4.8 2.1 229
ST. LAWRENCE ALT 8620 .7 .9 78 1.7 1.7 100
TOGWOTEE PASS 9580 3.1 2.6 119* 3.3 2.8 118
TOWNSEND CREEK 8700 .9 1.1 82 3.4 2.1 162
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Basin wide percent of average 152 152
BIGHORN BASIN
BALD MTN. 9380 3.3 2.7 122 3.5 2.4 146
BEAR TRAP MEADOW 8200 .4 .6 67 2.2 1.7 129
BLACKWATER 9780 2.8 3.1 90 2.9 2.7 107
BONE SPRINGS DIV 9350 3.8 2.6 146 3.9 2.5 156
EVENING STAR 9200 3.1 2.7 115* 4.1 2.8 146
GRAVE SPRINGS 8550 .9 1.1 82 2.3 2.1 110
KIRWIN 9550 1.3 1.8 72 1.6 1.8 89
MARQUETTE 8760 .8 1.9 42 1.3 2.3 57
MIDDLE POWDER 7760 1.1 1.3 85* 2.3 2.6 88
OWL CREEK 8975 .1 .9 11 .5 1.2 42
POWDER RIVER PASS 9480 2.9 1.3 223 3.6 1.9 189
SHELL CREEK 9580 3.2 2.6 123 3.0 2.0 150
SYLVAN LAKE 8420 2.9 1.9 153* 4.1 2.6 158
SYLVAN ROAD 7120 1.2 .5 240* 2.9 2.1 138
TIMBER CREEK 7950 .0 1.0 0 .4 1.6 25
YOUNTS PEAK 8350 1.6 1.4 114* 2.6 1.8 144
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Basin wide percent of average 107 121
SHOSHONE RIVER
BLACKWATER 9780 2.8 3.1 90 2.9 2.7 107
EVENING STAR 9200 3.1 2.7 115* 4.1 2.8 146
KIRWIN 9550 1.3 1.8 72 1.6 1.8 89
MARQUETTE 8760 .8 1.9 42 1.3 2.3 57
SYLVAN LAKE 8420 2.9 1.9 153* 4.1 2.6 158
SYLVAN ROAD 7120 1.2 .5 240* 2.9 2.1 138
YOUNTS PEAK 8350 1.6 1.4 114* 2.6 1.8 144
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Basin wide percent of average 103* 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .6 67 2.2 1.7 129
BIG GOOSE 7990 .9 .9 100* 2.3 2.1 110
BONE SPRINGS DIV 9350 3.8 2.6 146 3.9 2.5 156
BURGESS JUNCTION 7880 1.1 1.5 73 2.5 2.2 114
CLOUD PEAK RESERVOIR 9860 2.5 1.5 167* 2.9 2.6 112
DOME LAKE 8880 2.2 1.8 122 3.1 2.5 124
GRAVE SPRINGS 8550 .9 1.1 82 2.3 2.1 110
HANSEN SAWMILL 8360 .3 .9 33 1.4 1.8 78
MIDDLE POWDER 7760 1.1 1.3 85* 2.3 2.6 88
POWDER RIVER PASS 9480 2.9 1.3 223 3.6 1.9 189
SUCKER CREEK 8880 2.6 1.3 200* 3.4 2.4 142
TIE CREEK 6870 .3 .8 37 2.2 2.5 88
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Basin wide percent of average 122 119
BELLE FOURCHE
BLIND PARK 6890 .4 .6 67* 2.3 2.6 88
COLE CANYON 5910 .2 .8 25 1.8 -M *
NORTH RAPID CREEK 6130 .5 .5 100* 1.6 2.5 64
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Basin wide percent of average 58* 76
UPPER N. PLATTE RIVER
COLUMBINE 9160 .5 .8 62* 2.9 2.4 121
DIVIDE PEAK 8860 3.8 1.7 224* 6.2 2.7 230
ELK RIVER 8700 .9 .7 129* 3.7 2.2 168
JOE WRIGHT 10120 3.3 2.6 127 1.2 3.4 35
NORTH FRENCH CREEK 10130 3.6 3.2 112* 3.9 3.4 115
OLD BATTLE 9920 7.1 3.1 229* 8.3 3.6 231
SAGE CREEK BASIN 7850 1.4 1.0 140* 5.2 1.5 347
SOUTH BRUSH CREEK 8440 .4 .8 50* 1.8 2.6 69
TOWER 10500 7.2 3.5 206* 6.4 4.0 160
WEBBER SPRINGS 9250 4.3 1.9 226* 5.9 3.1 190
WILLOW CREEK PASS 9540 1.3 1.1 118* 1.7 2.0 85
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Basin wide percent of average 166* 153
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.4 2.2 64* 2.3 2.5 92
CASPER MTN. 7850 .7 1.7 41 2.3 2.5 92
DEADMAN HILL 10220 3.2 2.2 145 2.3 2.5 92
DEER PARK 9700 5.7 2.6 219 6.6 2.5 264
LAPRELE CREEK 8375 .6 1.1 55* 2.2 1.9 116
RENO HILL 8500 .5 1.7 29 1.8 2.5 72
ROACH 9700 1.0 1.2 83* 2.6 2.3 113
SAND LAKE 10050 4.6 3.3 139* 3.4 3.1 110
SOUTH PASS 9040 3.7 1.5 247* 4.8 2.1 229
WINDY PEAK 7900 .0 .6 0* 1.4 1.7 82
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Basin wide percent of average 118* 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .6 .6 100* 3.5 1.9 184
DIVIDE PEAK 8860 3.8 1.7 224* 6.2 2.7 230
OLD BATTLE 9920 7.1 3.1 229* 8.3 3.6 231
SANDSTONE RS 8150 1.1 .6 183* 3.9 2.3 170
WHISKEY PARK 8950 3.3 1.7 194* 4.7 2.9 162
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Basin wide percent of average 206* 199
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.1 1.2 425* 5.3 1.8 294
BLIND BULL SUM 8900 3.5 1.7 206* 3.6 2.2 164
EAST RIM DIVIDE 7930 .7 .7 100* 2.1 1.4 150
ELKHART PARK G.S. 9400 3.5 .9 389* 4.3 1.9 226
GROS VENTRE SUMMIT 8750 2.4 1.4 171* 2.6 1.8 144
KENDALL R.S. 7740 2.0 .7 286* 3.4 1.5 227
LOOMIS PARK 8240 2.3 1.0 230* 3.4 1.8 189
NEW FORK LAKE 8340 1.4 .6 233* 2.2 1.5 147
SNIDER BASIN 8060 2.5 .8 312* 3.4 1.6 212
SPRING CREEK DIVIDE 9000 4.9 1.5 327* 5.4 2.6 208
TRIPLE PEAK 8500 2.5 1.2 208* 3.7 2.2 168
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Basin wide percent of average 263* 194
LOWER GREEN RIVER
HAMS FORK 7840 1.8 .5 360* 3.7 1.5 247
HEWINTA 9500 .5 .9 56* 2.8 2.4 117
HICKERSON PARK 9100 1.7 .5 340* 3.7 1.7 218
HOLE-IN-ROCK 9150 1.8 .5 360* 3.4 1.6 212
INDIAN CREEK 9425 5.7 1.5 380* 5.8 2.6 223
KELLEY R.S. 8180 4.2 1.0 420* 5.2 2.1 248
STEEL CREEK PARK 10100 3.5 1.6 219* 3.7 2.3 161
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Basin wide percent of average 295* 199
UPPER BEAR RIVER
BUG LAKE 7950 2.7 1.3 208* 4.8 2.3 209
HAYDEN FORK 9100 3.5 .9 389* 6.4 2.4 267
KELLEY R.S. 8180 4.2 1.0 420* 5.2 2.1 248
LILY LAKE 9050 2.5 1.0 250* 4.8 2.4 200
MONTE CRISTO 8960 5.8 1.6 362* 6.4 2.8 229
SALT RIVER SUMMIT 7600 1.7 .4 425* 3.8 1.9 200
TRIAL LAKE 9960 -M 1.9 * 8.5 2.8 304
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Basin wide percent of average 329* 239
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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.