部分河流最终流入内陆咸水湖泊，诸多河流在内陆消失于沙漠，这类未最终流入海洋的河流称为内陆水系，内陆水系多为内陆湖泊和河流构成。
降水量的增加对内陆水系的合并和外流的黄河和长江流域等产生重大影响。
The increased precipitation would have important effects on the convergence of inland water systems and on the catchment change of the Changjiang River and the Yellow River.
位于路易斯安那州的庞特查雷恩湖长堤，全长24英里，略微长一些，但是是横跨内陆水系，而不是海洋。
The Lake Pontchartrain Causeway in Louisiana, at almost 24 miles, is slightly longer but crosses an inland waterway rather than open sea.
自上个世纪80年代中期引入以来，它们已经遍布五大湖并且扩展到越来越多的美国和加拿大内陆水系。
Since their introduction in the mid 1980s, they have spread through all of the Great Lakes and to an increasing number of inland waterways in the United States and Canada.
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