St. Petersburg council approves 178-acre seagrass mitigation bank, setting aside credits for future development

City Council on Monday approved creation of a 178-acre seagrass mitigation bank that city staff said will restore and protect a contiguous seagrass meadow, produce mitigation credits for future development impacts and reduce the city’s construction costs by using dredged material from Port Manatee.

The project converts a 32-acre dredge hole and adjacent existing meadow (about 147 acres) into a larger, self-sustaining seagrass area and is expected to produce about 13.41 federal mitigation credits. Port Manatee will dredge material it removes for maintenance and transport that clean sand to the city site, a move staff said will significantly lower construction costs. Council voted 9-0 to approve the measure.

The project matters because it creates a single large mitigation area rather than piecemeal offsets, staff said, and it ties environmental restoration to a predictable funding and credit-sale model that can fund ongoing maintenance. The bank will also include signage and a community-engagement plan designed to reduce recreational damage to seagrass and educate boaters and shoreline users.

City project manager Brijesh Grama told…