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Worthington board reviews watershed plan to re‑meander stream and add off‑channel wetland; DNR says approach lowers safety and maintenance risks
Summary
The Worthington Public School District board reviewed a watershed remediation plan to re‑meander a stream and add an off‑channel wetland on district land west of the intermediate school. Engineers model a removal of about 106 pounds of phosphorus annually (≈11% of modeled inflow); the DNR said a naturalized approach is safer and requires less long‑term maintenance than a dam.
The Worthington Public School District board on April considered a proposed watershed project that would re‑meander an existing grassed waterway on property west of the intermediate school and construct an off‑channel wetland to slow flows and capture sediment.
Joel, the superintendent, introduced the plan and invited watershed and DNR representatives to present details and answer questions. Nathan, representing the watershed district, described a 3:1 side‑slope re‑meandered channel with a roughly 3‑foot‑wide bottom and an off‑channel wetland basin designed to capture silt and phosphorus before water rejoins the downstream channel. "A yearly total inflow of phosphorus on that property was modeled as 995 pounds," Nathan said, and "this current concept design removes 106 pounds…
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