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Mount Clemens pivots sewer‑separation plan after modeling finds hospital site adds large runoff
Summary
City staff and consultant Ashley told the Mount Clemens commission that limited field checks and hydraulic modeling showed the former hospital site drains into the combined sewer and contributes far more flow than expected, forcing a pivot from a large separation to three smaller neighborhood projects and a bid for state loans and grants.
Mount Clemens city staff reported at a work session that field checks and a small hydraulic model show the former hospital site on North Avenue discharges heavily into the combined sewer system, increasing the storage and upsizing needs for a previously proposed large‑area separation. Ashley, the project's consultant, said the finding makes the original $3,000,000 plan infeasible without far more storage or significantly larger mains.
The finding forced planners to pivot to three smaller, targeted separation projects designed to capture areas with persistent basement flooding complaints: Church Street (between Highland and Lodewick), Kendrick Street and Lois Lane. Ashley said the team proposes roughly 500 feet of new storm sewer on Church Street, about 1,000 feet on Kendrick and 700–800 feet on Lois Lane, including new catch basins and manholes.
"When we completed…
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