California Code, Government Code - GOV § 66692

(a) For the purposes of this chapter, the area referred to as the San Francisco Bay Area includes the nine Bay Area counties and navigable waters and tributaries under tidal influence that are part of or feed into San Francisco Bay.

(b) The San Francisco Bay Area Water Trail primary project area shall be the area within the commission's jurisdiction as defined in Section 66610 of this code, and the area described in Section 29101 of the Public Resources Code.