Aklan is a mountainous province with over one-third of its land area sloping at 30 percent on the average. It is still one of the few provinces in the country to maintain a total of some 709 hectares of virgin forest. Mountain ranges traverse the island: one; the northern “knot” of Duyang and Tagacan; and the other, the Albinian mountain ranges in the west. Mount Madyaas, at 2117 meters, is the second highest peak on Panay and is shared by Aklan and Antique. The province has no active volcano, therefore, earthquakes have not been severe, although three faults pass through it. The province has a total land area of 1,817 sq. kms.
Much of the province is drained of water into the Sibuyan Sea. Natural inland water resources include rivers, streams, and creeks, springs and water falls. There is only one lake in the province, Lake Lapu-lapu, located in the northern Malay town. There are five major river systems. The largest and longest is the Aklan, which flows some 60 kilometers from Capiz to the mouth in Kalibo. Ibajay river flows over 30 kilometers from Madalag to its mouth at Ibajay. The Tangalan, Jalo, and Talon systems are much smaller. The highest waterfall in the province is the Dumalaylay which falls some 100 meters.
The coastline of Aklan stretches for some 155 kilometers along 10 municipalities and 73 barangays. The coastline has two major physical features: Batan Bay in the south-east and Boracay Island at the northern tip of Panay Island.
The plains of Aklan constitute an area of 100 square kilometers shaped into a diamond that includes the central towns of Malinao and Banga and the western coastal towns of New Washington, Kalibo and Makato.
Marshlands are along the coastal towns, comprising over 50 square kilometers.