Colorado Geologic Survey

Colorado Geologic Survey Finds Acid Drainage Predates Mining

An award-winning study by the Colorado Geologic Survey has found that highly acidic surface water preceded mining activity by thousands, perhaps millions of years. The report was recently given an award by the Geological Society of America as the best environmental publication of 2011.


July 4, 2012--Geologic survey report finds acid drainage predated mining (Telluride Watch)

An award-winning study by the Colorado Geologic Survey has bolstered claims by miners in the Ouray-Red Mountain district that highly acidic surface water preceded m


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