The river of Shkumbin begins at the eastern part of the mountains of Valamara in Korçë County. At Gryka e Shkumbinit, the river, which until then was trapped in a narrow valley, breaks through the Skanderbeg Mountains and enters the coastal region until it reaches the northern part of the park, where it flows into the Adriatic Sea. The river of Seman begins at the confluence of the Osum River and Devoll River as well in Korçë County. Its estuary, located in the southern part of the park, is considerably swampy and characterized by the presence of water basins and ponds.