ABQ Times

A new research paper published in Annual Reviews of Earth and Planetary Sciences sheds light on the significance of Grand Canyon's springs and groundwater, as well as the potential threats posed by uranium mining. The paper, titled Hydrotectonics of Grand Canyon Groundwater, emphasizes the importance of sustainable groundwater management and the need for better monitoring to address uranium mining threats.

Distinguished Professor Karl Karlstrom from the Department of Earth & Planetary Sciences at The University of New Mexico, one of the authors of the paper, highlighted the complexity of groundwater systems in the Grand Canyon region. He emphasized the interconnectivity of these systems and the risks posed by uranium mining and other contaminants, stating, "Water flows down gradient, and fault pathways control where groundwater ponds in sub-basins."

Lead author Laura Crossey discussed the findings of the research, noting the role of faults as fluid superhighways that connect different aquifers. She stressed the importance of understanding these "hydro-tectonic" concepts in managing and protecting the Grand Canyon's springs and groundwater wells.

The paper also addresses the timely issue of uranium mining in the region, particularly the Pinyon Plain mine near the Park's South Rim Village. Karlstrom expressed concern over the lack of consideration for recent scientific findings in the permitting process, stating, "Tribes claim the permitting is ignoring recent peer-reviewed science and risks to culturally significant features."

The authors of the paper advocate for caution and oppose mining in the sensitive region due to the significant risk of contamination, especially of the Havasupai springs that supply water to the Havasupai Village. The paper serves as a comprehensive summary of the science surrounding Grand Canyon groundwater, urging state and federal agencies to prioritize the protection of this unique and vital ecosystem.