The main watercourse of Yangtze was made of some surface river sectors and underground rivers.

地表河与地下河相连接构成长江主河道。

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The productive embankments on the watercourse bottomland disturb the water-sediment lateral exchange between bottomland and main flume, which have great influence on the riverbed evolution.

河道主槽两侧修建的生产堤影响滩槽泥沙横向交换，对河床演变带来很大影响。

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The park's mines closed in the 1900s, but the leete path, one of the main trails through the park, follows the route of a former mine working watercourse.

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