Open-file Report -
Hydrogeology and Geochemistry of the Animas River Alluvial Aquifer after the Gold King Mine Spill, San Juan County, New Mexico
B. Talon Newton, Ethan Mamer, and Stacy Timmons
The New Mexico Bureau of Geology and Mineral Resources is a research and service division of New Mexico Institute of Mining and Technology, serving as the state’s geologic survey. After the Gold King Mine released metal and sludge-laden water into Cement Creek and the Animas River on August 5, 2015, the agency began a hydrologic assessment focused on the alluvial aquifer adjacent to the Animas River in New Mexico, from the Colorado state line to Farmington, NM. The purpose of this project was to evaluate possible effects from the mine release on the shallow groundwater near the Animas River. Accomplishing this requires an understanding of the seasonal changes to the surface water-groundwater system and long-term monitoring of the groundwater quality conditions along this reach of the Animas River.
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