(a) The commissioners court of the county or the municipal authority of the municipality may:
(1) establish, construct, extend, maintain, or improve a seawall, breakwater, levee, floodway, or drainway;
(2) improve, maintain, or beautify a boulevard erected in connection with the seawall, breakwater, levee, floodway, or drainway; and
(3) for purposes of implementing Subchapter H, Chapter 33, Natural Resources Code:
(A) participate as a qualified project partner for an erosion response project undertaken by the General Land Office, as those terms are defined by Section 33.601, Natural Resources Code; and
(B) undertake or contribute to the funding of:
(i) beach renourishment on public beaches, as defined by Section 61.012, Natural Resources Code; or
(ii) any other erosion response project as defined by Section 33.601, Natural Resources Code, on waterways, bays, and bay shorelines.
(b) The commissioners court or municipal authority may incur debt for a purpose authorized under Subsection (a).