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Council weighs detention, culvert and upstream options to reduce West Main flash flooding
Summary
Staff presented five possible detention or conveyance fixes including a $25,000 excavation at a low point, upstream detention sites, developer cooperation to route runoff into a larger basin, and enlarging a culvert; staff will return with cost analyses and permitting implications.
Councilmembers discussed multiple engineering options on Sept. 2, 2025, to reduce recurring flash flooding and short-duration road closures at West Main near Timan. Staff described five potential approaches ranging from a roughly $25,000 excavation to enlarge storage at a low point to upstream detention, developer-participation in enlarging a detention basin, culvert enlargement, and future work tied to dredging Lions Lake.
Staff said street crews had closed the section of West Main about five times this year for short periods — typically 20 minutes to an hour — after intense rains, and that some flooding events resolve before crews can arrive. One…
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