Floodplain Building Requires County Engineering Review

Creeks, branches, and lake edges still matter in suburban Collin County. Work in a FEMA floodplain needs review and approval from county Engineering.

The Director of Engineering also serves as the county Floodplain Administrator. The rules call for a pre-development meeting to talk through flood-study needs. A floodplain permit can affect floor height, drainage design, and where a structure sits.

Near a creek, lake arm, or mapped low area, compare the FEMA map with the county rules early. City permits may also apply, but unincorporated projects still need the county floodplain answer.