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Engineers warn failing Pine(s) spillway threatens Warr Acres sanitary interceptor; OWRB review underway
Summary
City engineers told the Warr Acres council that erosion and spillway failure at the privately owned Pine(s) dam have begun to expose a sanitary sewer interceptor that carries an estimated 80% of the city's wastewater, prompting a dam‑breach analysis submitted to the Oklahoma Water Resources Board and a proposal for coordinated pipe casing and spillway repairs funded in part by ARPA and the HOA.
Engineers told the Warr Acres City Council that erosion at the Pine(s) homeowners association dam has already damaged the downstream spillway and is beginning to expose a sanitary sewer interceptor that runs beneath it, creating a significant risk to the city's wastewater system.
Consulting engineer (Speaker 13) said the team ran hydrologic and hydraulic scenarios — sunny-day breach, design flood, breach/non‑breach and near‑overtopping — and submitted a dam‑breach analysis to the Oklahoma Water Resources Board (OWRB). The analysis, the engineer said, indicates the lake and downstream systems can be managed without loss of buildings under most modeled scenarios,…
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