"Municipality" and "city" include every city, city and county, or county, or other entity, public corporation, or agency authorized to operate under this division, including any joint powers entity created pursuant to Chapter 5 (commencing with Section 6500) of Division 7 of Title 1 of the Government Code and any special district organized for the purpose of aiding in the development or improvement of navigation or commerce to, or within, the district.
Ca. Sts. and High. Code § 10003