Floating Bulkheads

Floating bulkheads are typically used for spillway openings where inaccessibility or size, prevent the use of a conventional bulkhead gate. The floating bulkhead consists of individual sections called caissons that are floated into place, pinned together then chambers in the caissons are filled with water as needed to lower the assembled gate into place in the opening. For removal, the caisson chambers are filled with air to evacuate the water allowing the gate to float to the surface.

Carraizo Dam, Trujillo Alto, Puerto Rico • (2) 47' x 40' spillway floating   bulkhead gates

PPL Montana, Morony Dam • (1) 47' x 29' spillway floating   bulkhead gate