Várzea Da Boacica is a significant floodplain wetland located in Alagoas, Brazil, situated in the lower São Francisco River valley near the town of Penedo. As the largest varzea in the region, it forms part of a network of floodplain systems that also includes the Marituba, Pindoba, and other varzeas along the Alagoas and Sergipe border. The area is characterized by seasonal flooding and draining patterns historically driven by the natural rhythms of the São Francisco River, patterns that were significantly altered by the construction of the Paulo Afonso IV dam and have since been partially restored through a system of dikes and pumping stations. This dynamic hydrological environment creates a rich and productive aquatic ecosystem that supports diverse fish communities across its expansive floodplain waters.