TX HB13

Creates the Flood Infrastructure Fund as a special fund in the state treasury, administered by the Texas Water Development Board, to provide loans, grants, and zero-interest loans to eligible political subdivisions (districts, municipalities, and counties) for drainage, flood mitigation, and flood control projects, including nature-based features.

Appropriates $3.26 billion from the Economic Stabilization Fund (rainy day fund) to the Flood Infrastructure Fund, contingent on approval by a two-thirds vote of each legislative chamber.

Requires the Texas Water Development Board to prepare and adopt a comprehensive state flood plan by September 1, 2024, incorporating approved regional flood plans, and to update the plan every five years thereafter.

Directs the State Soil and Water Conservation Board to prepare and adopt a 10-year dam repair and maintenance plan describing the needs of flood control dams, with a new plan required every 10 years.

Expands the definition of "flood control planning" to include regulatory approvals, engineering plans, and structural or nonstructural flood mitigation work, and prioritizes funding eligibility for counties with median household income at or below 85% of the state median; the Act takes effect January 1, 2020, only if voters approve a related constitutional amendment.