MD SB225

Designates four watersheds as interjurisdictional flood hazard watersheds: Carroll Creek (Frederick City/County), Gwynns Falls, Jones Falls, and Herring Run (all in Baltimore City/Baltimore County), including all headwaters and tributaries

Requires flood management plans for interjurisdictional watersheds to be reviewed and approved by the Department of the Environment as a single unified plan across jurisdictions

Originally included the Patapsco River watershed spanning five jurisdictions (Baltimore City, Baltimore County, Howard County, Carroll County, and Anne Arundel County), but this provision was struck by amendment

Maintains existing requirements that comprehensive flood management plans seeking grant funds must receive Department approval, with written reasons required for any disapproval

Takes effect October 1, 2026