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 SATURDAY: OCTOBER 30 , 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 1.8 .6 300* 3.1 2.0 155
COTTONWOOD CREEK 7600 2.0 .9 222* 3.9 2.9 134
GRANITE CREEK 6770 1.6 .5 320* 3.9 1.7 229
GRASSY LAKE 7265 3.0 1.4 214* 4.1 3.3 124
GROS VENTRE SUMMIT 8750 2.3 1.3 177* 2.5 1.8 139
LEWIS LAKE DIVIDE 7850 3.8 1.2 317* 4.5 3.1 145
PHILLIPS BENCH 8200 3.1 1.3 238* 3.9 2.3 170
SALT RIVER SUMMIT 7600 1.6 .4 400* 3.7 1.9 195
SNAKE RIVER STATION 6920 .9 .5 180* 2.6 2.2 118
SPRING CREEK DIVIDE 9000 4.6 1.4 329* 5.0 2.5 200
THUMB DIVIDE 7980 1.8 .8 225* 2.4 2.0 120
TOGWOTEE PASS 9580 3.0 2.5 120* 3.2 2.7 119
TWO OCEAN PLATEAU 9240 4.7 3.0 157* 4.2 3.0 140
WILLOW CREEK 8450 3.4 1.7 200* 5.0 3.6 139
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Basin wide percent of average 215* 149
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.5 2.5 100* 2.7 2.1 129
BLACK BEAR 8170 5.7 2.7 211* 6.3 3.4 185
CANYON 8090 1.2 .6 200* 2.2 1.8 122
FISHER CREEK 9100 3.2 2.6 123* 4.0 3.2 125
MADISON PLATEAU 7750 3.0 1.5 200* 4.3 2.4 179
NORTHEAST ENTRANCE 7350 .3 .3 100* 1.3 1.5 87
PARKER PEAK 9400 2.5 2.4 104* 2.6 2.2 118
SYLVAN LAKE 8420 2.7 1.9 142* 3.8 2.5 152
THUMB DIVIDE 7980 1.8 .8 225* 2.4 2.0 120
TWO OCEAN PLATEAU 9240 4.7 3.0 157* 4.2 3.0 140
WHISKEY CREEK 6800 1.7 .7 243* 3.4 2.2 155
WHITE MILL 8700 2.1 1.9 111* 2.7 2.6 104
WOLVERINE 7650 .4 .5 80* 1.5 1.8 83
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Basin wide percent of average 149* 135
WIND RIVER
BURROUGHS CREEK 8750 1.4 .9 156* 1.6 1.6 100
COLD SPRINGS 9630 1.3 1.0 130 1.8 1.9 95
DEER PARK 9700 5.6 2.5 224 6.5 2.4 271
HOBBS PARK 10100 2.7 2.1 129 2.9 2.1 138
LITTLE WARM 9370 1.5 1.0 150* 1.8 1.7 106
SOUTH PASS 9040 3.7 1.5 247* 4.7 2.1 224
ST. LAWRENCE ALT 8620 .7 .8 87 1.6 1.7 94
TOGWOTEE PASS 9580 3.0 2.5 120* 3.2 2.7 119
TOWNSEND CREEK 8700 .8 1.0 80 3.3 2.1 157
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Basin wide percent of average 156 150
BIGHORN BASIN
BALD MTN. 9380 3.3 2.6 127 3.4 2.3 148
BEAR TRAP MEADOW 8200 .3 .6 50 2.2 1.7 129
BLACKWATER 9780 2.6 3.0 87 2.8 2.6 108
BONE SPRINGS DIV 9350 3.8 2.5 152 3.8 2.4 158
EVENING STAR 9200 2.8 2.6 108* 3.7 2.7 137
GRAVE SPRINGS 8550 .9 1.1 82* 2.1 2.1 100
KIRWIN 9550 1.3 1.8 72 1.6 1.8 89
MARQUETTE 8760 .8 1.9 42 1.3 2.2 59
MIDDLE POWDER 7760 1.1 1.2 92* 2.2 2.5 88
OWL CREEK 8975 .0 .8 0 .5 1.1 45
POWDER RIVER PASS 9480 2.9 1.2 242 3.5 1.9 184
SHELL CREEK 9580 3.2 2.6 123 3.0 2.0 150
SYLVAN LAKE 8420 2.7 1.9 142* 3.8 2.5 152
SYLVAN ROAD 7120 1.0 .5 200* 2.6 2.1 124
TIMBER CREEK 7950 .0 1.0 0 .4 1.6 25
YOUNTS PEAK 8350 1.5 1.3 115* 2.4 1.8 133
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Basin wide percent of average 106 118
SHOSHONE RIVER
BLACKWATER 9780 2.6 3.0 87 2.8 2.6 108
EVENING STAR 9200 2.8 2.6 108* 3.7 2.7 137
KIRWIN 9550 1.3 1.8 72 1.6 1.8 89
MARQUETTE 8760 .8 1.9 42 1.3 2.2 59
SYLVAN LAKE 8420 2.7 1.9 142* 3.8 2.5 152
SYLVAN ROAD 7120 1.0 .5 200* 2.6 2.1 124
YOUNTS PEAK 8350 1.5 1.3 115* 2.4 1.8 133
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Basin wide percent of average 98* 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .3 .6 50 2.2 1.7 129
BIG GOOSE 7990 .8 .8 100* 2.3 2.1 110
BONE SPRINGS DIV 9350 3.8 2.5 152 3.8 2.4 158
BURGESS JUNCTION 7880 1.1 1.5 73 2.5 2.2 114
CLOUD PEAK RESERVOIR 9860 2.5 1.5 167* 2.7 2.5 108
DOME LAKE 8880 2.2 1.8 122 3.1 2.4 129
GRAVE SPRINGS 8550 .9 1.1 82* 2.1 2.1 100
HANSEN SAWMILL 8360 .2 .8 25 1.4 1.8 78
MIDDLE POWDER 7760 1.1 1.2 92* 2.2 2.5 88
POWDER RIVER PASS 9480 2.9 1.2 242 3.5 1.9 184
SUCKER CREEK 8880 2.6 1.3 200* 3.3 2.3 143
TIE CREEK 6870 .3 .8 37 2.2 2.4 92
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Basin wide percent of average 124 119
BELLE FOURCHE
BLIND PARK 6890 .5 .5 100* 2.2 2.5 88
COLE CANYON 5910 .3 .8 37 1.7 -M *
NORTH RAPID CREEK 6130 .5 .5 100* 1.6 2.4 67
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Basin wide percent of average 72* 78
UPPER N. PLATTE RIVER
COLUMBINE 9160 .6 .8 75* 2.8 2.3 122
DIVIDE PEAK 8860 3.8 1.7 224* 6.0 2.6 231
ELK RIVER 8700 1.0 .6 167* 3.7 2.2 168
JOE WRIGHT 10120 3.1 2.5 124* 1.2 3.3 36
NORTH FRENCH CREEK 10130 3.6 3.1 116* 3.8 3.3 115
OLD BATTLE 9920 7.2 3.0 240* 8.2 3.5 234
SAGE CREEK BASIN 7850 1.4 .9 156* 5.1 1.5 340
SOUTH BRUSH CREEK 8440 .4 .7 57* 1.8 2.5 72
TOWER 10500 7.4 3.4 218* 6.3 3.8 166
WEBBER SPRINGS 9250 4.2 1.8 233* 5.8 3.0 193
WILLOW CREEK PASS 9540 1.4 1.1 127* 1.7 2.0 85
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Basin wide percent of average 174* 155
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.3 2.1 62* 2.2 2.4 92
CASPER MTN. 7850 .7 1.7 41* 2.2 2.4 92
DEADMAN HILL 10220 3.2 2.1 152 2.3 2.4 96
DEER PARK 9700 5.6 2.5 224 6.5 2.4 271
LAPRELE CREEK 8375 .5 1.0 50* 1.9 1.9 100
RENO HILL 8500 .5 1.7 29 1.7 2.4 71
ROACH 9700 .9 1.2 75* 2.6 2.2 118
SAND LAKE 10050 4.6 3.2 144* 3.3 3.0 110
SOUTH PASS 9040 3.7 1.5 247* 4.7 2.1 224
WINDY PEAK 7900 .0 .5 0* 1.3 1.7 76
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Basin wide percent of average 120* 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .6 .5 120* 3.4 1.9 179
DIVIDE PEAK 8860 3.8 1.7 224* 6.0 2.6 231
OLD BATTLE 9920 7.2 3.0 240* 8.2 3.5 234
SANDSTONE RS 8150 1.2 .5 240* 3.9 2.2 177
WHISKEY PARK 8950 3.3 1.6 206* 4.6 2.8 164
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Basin wide percent of average 221* 201
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.0 1.2 417* 5.2 1.8 289
BLIND BULL SUM 8900 3.1 1.6 194* 3.2 2.2 145
EAST RIM DIVIDE 7930 .6 .6 100* 2.0 1.3 154
ELKHART PARK G.S. 9400 3.5 .8 438* 4.3 1.9 226
GROS VENTRE SUMMIT 8750 2.3 1.3 177* 2.5 1.8 139
KENDALL R.S. 7740 1.9 .6 317* 3.3 1.5 220
LOOMIS PARK 8240 2.2 .9 244* 3.2 1.8 178
NEW FORK LAKE 8340 1.4 .5 280* 2.2 1.5 147
SNIDER BASIN 8060 2.4 .7 343* 3.3 1.6 206
SPRING CREEK DIVIDE 9000 4.6 1.4 329* 5.0 2.5 200
TRIPLE PEAK 8500 2.3 1.2 192* 3.4 2.2 155
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Basin wide percent of average 271* 187
LOWER GREEN RIVER
HAMS FORK 7840 1.7 .4 425* 3.4 1.4 243
HEWINTA 9500 .6 .8 75* 2.7 2.3 117
HICKERSON PARK 9100 1.5 .4 375* 3.6 1.7 212
HOLE-IN-ROCK 9150 1.7 .4 425* 3.4 1.6 212
INDIAN CREEK 9425 5.4 1.5 360* 5.5 2.5 220
KELLEY R.S. 8180 3.9 .9 433* 4.9 2.1 233
STEEL CREEK PARK 10100 3.5 1.6 219* 3.6 2.2 164
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Basin wide percent of average 305* 196
UPPER BEAR RIVER
BUG LAKE 7950 2.6 1.2 217* 4.7 2.2 214
HAYDEN FORK 9100 3.5 .8 438* 6.3 2.3 274
KELLEY R.S. 8180 3.9 .9 433* 4.9 2.1 233
LILY LAKE 9050 2.5 .9 278* 4.8 2.3 209
MONTE CRISTO 8960 5.5 1.6 344* 6.1 2.7 226
SALT RIVER SUMMIT 7600 1.6 .4 400* 3.7 1.9 195
TRIAL LAKE 9960 -M 1.9 * -M 2.7 *
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Basin wide percent of average 338* 226
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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.