Lake Ahémé

Lake Ahémé is Benin's second largest lake, with an area of 78 square kilometres in the dry season which expands to 100 square kilometres in the rainy season. The lake is 24 kilometres long and has an average width of 3.6 kilometres. The Couffo River drains into the swampy north end of the lake, while the 10 km-long Aho Channel connects the lake's southern end to the Grand-Popo Lagoon on the Atlantic coast. This channel flows south during the wet season but reverses direction in the dry season, which causes the salinity of the lake's southern end to increase. ()