The south Florida regional landscape has been engineered to provide flood protection and water supply. Lake Okeechobee is the main location for surface water storage in this system. As part of the Central and Southern Florida (C&SF) Project authorized in 1948 the system was engineered with two large canals that now have the capacity to carry large volumes of water from Lake Okeechobee to the St. Lucie and the Caloosahatchee estuaries. Considerable impacts to the natural ecosystems of south Florida, including the St. Lucie Estuary, Caloosahatchee Estuary, Lake Okeechobee, and the Florida Everglades stem from large deviations in the quantity and quality of freshwater delivered to these systems relative to a pre-engineered time period. Lake Okeechobee is regulated and managed by the U.S. Army Corps of Engineers (USACE) in collaboration with SFWMD who provides information. Currently, they are planning a lake regulation review that will consider alternative regulation schedules that take into consideration the tradeoffs between health of the lake, estuaries, Everglades, as well as provision of flood control and water supply.