California Code, Government Code - GOV § 56021

(a) A city incorporation.

(b) A district formation.

(c) An annexation to a city.

(d) An annexation to a district.

(e) A detachment from a city.

(f) A detachment from a district.

(g) A disincorporation of a city.

(h) A district dissolution.

(i) A consolidation of cities.

(j) A consolidation of special districts.

(k) A merger of a city and a district.

(l) Establishment of a subsidiary district.

(m) The exercise of new or different functions or classes of services, or divestiture of the power to provide particular functions or classes of services, within all or part of the jurisdictional boundaries of a special district as provided in Article 1.5 (commencing with Section 56824.10) of Chapter 5 of Part 3 of this division.