USGS Abandoned Mine Lands Intiative (AMLI)
A Science-Based, Watershed Strategy to Support Effective Remediation of Abandoned Mine Lands
| WATERSHED CHARACTERISTICS | UPPER ANIMAS RIVER COLORADO | BOULDER RIVER MONTANA |
|---|---|---|
| GEOGRAPHY | ||
| Drainage area (km2) | 378 | 233 |
| Precipitation (cm/yr) | 100-127 | 36 - 76 |
| Snowfall | high | high |
| Elevation (m) | 2,800 - 4,200 | 1500 - 2500 |
| Primary fish species | brook trout | rainbow trout |
| SOCIOECONOMICS | ||
| Population | 500 - 3,500 | 100-200 |
| Major Industries | tourism | logging, mining, cattle |
| Public interest in AML - within watershed - state wide |
high high |
low high |
| FLMA | USFS, BLM | USFS, BLM |
| Reclamation Sponsorship | Stakeholder | State |
| GEOLOGY | ||
| General geology | Intercaldera lavas (hydrothermally altered) | Granitic batholith (veins) |
| Metals mined | Ag, Au, Pb, Zn | Ag, Cu, Pb, Zn, Au |
| Major mining period | 1880-1990 | 1870-1940 |
| Carbonates | some | none |
| Abandoned mines | 1,500 | 150 |
| AML characterization | high | low |
| Fisheries impacts | significant | limited |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://amli.usgs.gov/reports/icard97/table1.html
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Page Last Modified: 18-Dec-2007@19:12
