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Jilin is high in the southeast and low in the northwest and includes mountains, hills and plains in three topographical zones: l) The Changbai Mountain Area in the east includes the Baitou, Laoyeling and Mudanling mountains. Here there are many narrow valleys and small intermontane basins, including the Yanji, Hunjiang and Dunhua basins. 2) The northwestern part of the province is a section of the Songliao Plain and belongs to the central part of the Northeast Plain. It has a gently undulating terrain and is the watershed of the Songhua and Liaohe rivers. 3) Between the Changbai Mountain Area and the Songliao Plain are hills some 500 meters above sea level interspersed with intermontane basins and valleys.
The Second Songhua River, the longest waterway in Jilin, has a catchment area of over 70,000 square kilometers, or 40 per cent of the province's land mass. The Yalu and the Tumen rivers mark the boundary between China and Korea. The largest lake in Jilin is Songhua, also known as Fengman Reservoir, which is one of the nationally known artificial lakes. There are numerous other lakes in the northwest, the larger ones being Yueliangpao, Chaganpao and Dabusupao.
(china.org.cn)
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