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Stormwater utility update: staff report progress on repairs, boardwalk and a homeowner grant pilot

Johns Creek City Council · April 28, 2025
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Summary

Interim stormwater manager Roman Carey told council the utility has inspected assets citywide, maintained most high‑priority structures, completed a stream restoration, is constructing a town‑center boardwalk with wetlands that will add about 3,000,000 gallons of storage, and will launch a $422,000 homeowner grant pilot in late May.

Interim Stormwater Utility Manager Roman Carey presented the annual update and described the utility's inspections, maintenance approach and capital projects. Carey said the citywide inspection scored assets by condition and siltation; since the program began in 2021 the utility has maintained 70% of assets with a condition score of 3 or higher (on a 5‑point scale) and 56% with a siltation score of 3 or higher (on a 10‑point scale).

Carey highlighted maintenance techniques—pipe cleaning, cured‑in‑place and spin‑cast lining, and cut‑and‑replace repairs—and said lining can extend a pipe's service life by about 50 years. He reviewed a stream restoration and the town‑center boardwalk project (design/permitting completed early 2024; construction began August 2024) that integrates wetlands, regenerative stormwater features and underground detention to provide roughly 3,000,000 gallons of additional storage; construction is on track for completion next summer.

Staff also described a new homeowner grant program recommended in the 2023 master plan: awards capped at $30,000 per homeowner, an initial pilot budget of $422,000 and an application portal set to open in late May, with first projects anticipated in late summer. Council asked practical maintenance questions—how underground detention is inspected and whether vac‑truck cleanouts are required; staff said most systems are inspected through manhole access and dredged or vacuumed as needed.