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Utilities director flags high‑hazard rating and $0.9M–$1.3M repair estimate for Tankersley Lake dam
Summary
Utilities Director Aaron Marshall presented PPQ inspection findings showing the dam spillway in poor condition and the structure carrying a high-hazard classification; repair estimates ranged from $900,000 to $1.3 million, work would require lowering water levels and dry-season construction, and federal grant options appear limited.
Utilities Director Aaron Marshall briefed the council on April 21 about inspection findings and rehabilitation options for the Tankersley Lake dam.
Marshall said the dam was completed in 1957, has a long inspection history, and carries a high-hazard rating because a full failure could inundate areas that include the city’s sewer plant. He said the spillway has been rated "poor" while the dam body has been rated "fair." Marshall described visible signs of distress—broken or settled concrete panels and trees growing in the structure—and said repairs would require lowering the water level to reach panels and working in the dry season.
Estimated repair costs in the staff presentation ranged from $900,000 to $1.3 million depending on scope and rain conditions. Marshall said lower-cost repairs involve drawing down the lake and replacing panels, while larger approaches to maintain a higher water level would increase costs and complexity. He noted grant opportunities for dams are scarce and that federal programs can take many years to deliver funding.
No formal decision or appropriation was taken at the meeting; the presentation served to inform council and the public of the condition, estimated costs, and next steps for design and potential funding.
