571—40.49 (462A) Zoning of Green Island, Jackson County. All motorboats except authorized emergency vessels shall operate at no-wake speed year around on boat channels adjacent to the interior channel 4 levee at the Green Island State Wildlife area. Both channels begin at the Green Island county road parking lot and proceed north 7920 feet along each side of the channel 4 levee to an intersection with the Snag Slough complex.