Sec. 9-2.06.   Signs:  Purposes of establishment.
   The Board hereby finds and declares that the establishment and maintenance of boating regulation signs, as provided in this chapter, is necessary and appropriate for establish the preservation and protection of the public health, safety, and general welfare for the following reasons:
   (a)   Powerboats moving at a high speed constitute an extreme danger to persons engaged in bathing, swimming, or diving who may be struck by a moving boat. Powerboats moving at a high speed also create wakes and turbulence in the water which in turn cause the movement and surge of landing floats, making conditions dangerous for persons embarking or disembarking from their own craft.
   (b)   Although Section 267 of the Harbors and Navigation Code of the State sets forth special speed limits for powerboats operated upon navigable waters, and although such speed limits are applicable to the waters of the Sacramento River located within the County, many persons who operate powerboats are unaware of the provisions of said Section 267.
   (c)   In recent years there have been numerous reports by citizens of violations of the provisions of Section 267 of the Harbors and Navigation Code of the State along and upon the waters of the Sacramento River within the County. By posting the provisions of said Section 267 in places used by the boating public, potential violations of said Section 267 may be averted through the education of persons who are ignorant of the existing speed limits.
   (d)   The posting of the provisions of Section 267 of the Harbors and Navigation Code of the State, as provided in this chapter, has been approved by the United States Corps of Army Engineers, the United States Coast Guard, and the Division of Small Craft Harbors of the Department of Parks and Recreation of the State. (§ 6, Ord. 552)