California Code, Water Code - WAT § 71341.5

(a) A district may employ park rangers who shall have the authority and powers conferred by subdivision (d) of Section 830.34 of the Penal Code upon peace officers.

(b) For the purposes of carrying out subdivision (a), the district shall adhere to the standards for recruitment and training of peace officers established by the Commission on Peace Officer Standards and Training pursuant to Title 4 (commencing with Section 13500) of Part 4 of the Penal Code.

(c) Every park ranger employed by a district shall conform to the standards for peace officers adopted by the Commission on Peace Officer Standards and Training.  Any park ranger who fails to conform to those standards shall not have the powers of a peace officer.