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County approves updated emergency plan for Marendall Dam after engineering briefing

Yankton County Commission · April 21, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

The Yankton County Commission approved an updated emergency preparedness plan for Marendall Dam after a presentation by the Department of Game, Fish and Parks describing updated contact lists and inundation mapping; commissioners asked about seepage monitoring and resident notification.

The Yankton County Commission on April 21 approved an updated emergency preparedness plan for Marendall Dam, a state-owned high-hazard dam, following a presentation by Ryan Tobin, engineering supervisor with the Department of Game, Fish and Parks.

Tobin told the commission the plan mainly updates contact lists, calling trees and inundation mapping required by a state repair order after prior flooding and stilling-basin damage. "Marendall Dam has had that plan in place here, but it's been a while since we've updated it," he said, adding the Department of Natural Resources issued a repair order and the plan…

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