The bill establishes the Harris County Flood Control District as a distinct governmental agency with a new governance structure, replacing the previous oversight by the Commissioners Court with a Board consisting of five members appointed by the governor. These members will serve staggered four-year terms. The bill redefines the district's territory to be coextensive with Harris County and allows for the inclusion of adjacent counties through a petition process and voter approval. It also enhances the district's powers, enabling it to acquire and manage property for flood control, hire personnel, and enter into cooperative agreements with other governmental entities.

Additionally, the bill outlines new procedures for issuing bonds for flood control projects, including requirements for public hearings and voter approval, while ensuring that bond issuance does not exceed a specified tax rate on property within the district. It introduces provisions for the Board to set bond sale terms, mandates that bonds be sold at no less than face value, and clarifies the signing and registration process for bonds. The bill also allows the district to utilize public property for flood control and grants it the power of eminent domain. Significant changes include the replacement of "Harris County" with "the affected county" regarding building setback lines and the shift of oversight from the "commissioners court" to the "governing body of the district" for funding recreational and environmental improvements. The bill is set to take effect immediately upon a two-thirds vote or on September 1, 2025, if that threshold is not met.