Plunge pool Plunge pool A plunge pool (or plunge basin or waterfall lake) is a deep depression in a stream bed at the base of a waterfall or shut-in. It is created by the erosional forces of cascading water on the rocks at formation's base where the water impacts. The term may refer to the water occupying the depression, or the depression itself. Plunge pools are formed by the natural force of falling water, such as at a waterfall or cascade; they also result from man-made structures such as some spillway designs. Plunge pools are often very deep, generally related to the
Chute (racecourse) The chute was modeled to give the appearance of a European-type course. Grass sprints at about 6 furlongs (actual distance 64 feet less than same), as well as the marathon distance of about 1 miles (actual distance 262 feet less than same, and generally used only once a year for the San Juan Capistrano Invitational race), utilize the full length of the El Camino Real Chute. Turf races at 1 miles and 1 miles also start from various points within the chute, and races at 1 miles (a very common turf distance at American tracks) start directly on the dirt