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Impacts on Water Quality and Biota from Natural Acid Rock Drainage in Colorado’s Lake Creek Watershed

Citation

David A Bird, Matthew A Sares, Travis S Schmidt, and Greg A Policky, Impacts on Water Quality and Biota from Natural Acid Rock Drainage in Colorado’s Lake Creek Watershed: .

Summary

Colorado’s Lake Creek watershed hosts natural acid rock drainage that significantly impacts surface water, streambed sediment, and aquatic life. The source of the ARD is a group of iron-rich springs that emerge from intensely hydrothermally altered, unexploited, low-grade porphyry copper mineralization in the Grizzly Peak Caldera. Source water chemistry includes pH of 2.5 and dissolved metal concentrations of up to 277 mg/L aluminum, 498 mg/L iron, and 10 mg/L copper. From the hydrothermally altered area downstream for 27 kilometers to Twin Lakes Reservoir, metal concentrations in streambed sediment are elevated and the watershed experiences locally severe adverse impacts to aquatic life due to the acidic, metal-laden water. The [...]

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Communities

  • Upper Colorado River Basin

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Provenance

From Source - Mendeley RIS export <br> On - Thu Dec 02 18:54:32 CST 2010

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Title Citation Impacts on Water Quality and Biota from Natural Acid Rock Drainage in Colorado’s Lake Creek Watershed

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