Cal. Sts. & High. Code § 27171

The district may establish all necessary rules, regulation or conditions under which the property of the district may be used by the public and fix and collect all tolls for the use thereof, and enter into contracts with any persons or public officers or public or private corporations, whereby the facilities constructed by the district may be made use of, by such persons, officers, or corporations, and at the tolls or for the consideration fixed by such contracts.