(a) These regulations shall refer to the upland boundary of the Commission's jurisdiction over “San Francisco Bay,” pursuant to Government Code Section 66610(a) (“San Francisco Bay” jurisdiction), and the upland boundary of the Commission's jurisdiction over those certain waterways listed in Government Code Section 66610(e) (“certain waterways” jurisdiction) as “the shoreline.” The shoreline shall be defined as being located at mean high water in those areas other than tidal marsh and in areas of tidal marsh at the upland edge of such areas up to five feet above mean sea level. Where necessary to distinguish the upland edge of the Commission's San Francisco Bay jurisdiction from the upland edge of the Commission's certain waterways jurisdiction, these regulations refer to the former as “San Francisco Bay shoreline” and the latter as “the certain waterways shoreline.”

(b) The Commission's San Francisco Bay and certain waterways jurisdictions include all tidally-influenced bodies of water having the nature of open water, however named, including sloughs, harbors, straits, channels, estuaries, bays, marinas, basins, and coves up to the shoreline.

(c) The Commission's San Francisco Bay jurisdiction includes those tidally-influenced portions of other waterways that flow into San Francisco Bay, however named, that are in fact parts of San Francisco Bay rather than tributaries and that are shown as parts of San Francisco Bay on the San Francisco Bay Plan Maps, including but not limited to:

(d) The Commission's San Francisco Bay jurisdiction includes Spoonbill Creek and the unnamed cut running northward just east of Collinsville, Solano County, but not including water areas lying generally southward of a line drawn from Simmons Point northeasterly along the southern shoreline of Chipps Island, Van Sickle Island, and the mainland, to the mouth of Marshall Cut.