The environmental impact is looking worse everyday, it's sad it happened to such a pristine river. Many more of these detention ponds are capable of this kind of failure/spill.
https://www.catawbariverkeeper.org/issues/coal-ash-1/duke-energy-dan-river-coal-ash-spill-what-do-we-currently-know-what-do-we-need-to-know
https://www.catawbariverkeeper.org/issues/coal-ash-1/duke-energy-dan-river-coal-ash-spill-what-do-we-currently-know-what-do-we-need-to-know