Cal. Public Resources Code § 6873.1

Filled lands shall include, but not be limited to, tide or submerged lands or beds of navigable rivers or lakes, reclaimed artificially through raising such lands above the highest probable elevation of the tides, or high water line on the river banks or shore, to form dry land, by placement of a fill or deposit of earth, rock, sand or other solid imperishable material. Such fill may be retained in place or protected by bulkheads, seawalls, revetments or similar enclosures and may be placed at any location approved by the commission under a lease heretofore or hereafter issued pursuant to this article.