Gan or Kan (both: gän) [key], river, c.550 mi (885 km) long, flowing north through the plain of central Jiangxi prov., SE China, past Nanchang to Poyang lake. Despite many rapids, it is navigable for junks below Ganzhou and for steamers up to Nanchang. The lower Gan valley is fertile; rice and tea are the main crops.
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