Because of its small width, Crete has few rivers, starting from the mountains of the island, in the central part, and ending either at the Libyan or Cretan Sea. Most of them have water only during the winter months, while on summer they get dry.
Litheos Potamos (Lethean River) collects water from the basin of Gergeri and Panassos in the south-eastern roots of Psiloritis. It continues its course as a wide river from Apomarma, during which many vertical streams meet the main stream. Throughout its course one meets many dilapidated watermills, while we also encounter traces of the ancient aqueduct that transferred water from Gergeri to Gortyn.
The River Moronis or Pera collects its waters from the wider area of Souda and Chania Crafts Park and transfers them to Souda beach. Its overall length does not exceed 5km, but it is important as it flows all year round.