S-352 is a lock structure in the Herbert Hoover Dike, and the origin of the L-10 and L-12 canal, also referred to as the West Palm Beach Canal, one of a dozen non-navigable canals that radiate outward from Lake Okeechobee. This canal heads southeast for 20 miles, to Twenty Mile Bend, a major canal intersection, where it turns east for another 20 miles to the ocean at West Palm Beach. Along the way the canal passes by the headquarters of the South Florida Water Management District, the entity which manages the flow of water throughout South Florida (and is one of five regional water management districts in the state). The district controls more than 2,000 miles of canals and berms, and more than 1,000 mechanical gates, locks, culverts, and pump stations.