More information about the effort is available at:

Water Quality Study

Efforts by federal, state, and local entities to assess and address pollution in Colorado are ongoing.  The results of the study are presented on the Abandoned Mines Water Quality Webportal. Red locations were visited and have water quality data, photos and completed field survey forms, unless these mines were not discharging water at the time of visitation. Yellow and Green locations provide mine name and locational information.

AML Water Quality User Guide

Abandoned Mine Lands Database

The Colorado Abandoned Mine Lands Database was created through collaboration with multiple state and federal agencies. Additional abandoned mine reclamation information was provided by the Colorado Division of Reclamation Mining and Safety. Agencies responsible for the data can be contacted with questions.  These agencies include:

AML Database User Guide