Liang Tan river is not only the largest sub-basin river but also the most polluted in Chongqing City.

梁滩河是重庆市主城区流域面积最大的次级河流，也是污染最严重的河流。

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Today, river discharges are increasingly controlled by human intervention, creating a need for international river-basin agreements.

如今河流排放越来越受到人为干预管束，需要出台国际河流流域的协定。

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When this inland sea retreated, Hamilton hypothesizes, the Amazon dolphins remained in the river basin, evolving into striking creatures.

哈密尔顿推测，当这片内陆海退去，亚马逊河豚在流域留了下来，逐渐进化为一种恐怖动物。

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On March twenty-seventh,nineteen twelve, Missus Taft and the wife of the Japanese Ambassador together planted two trees at a part of the river called the tidal basin.

VOA: special.2011.04.08

After independence, nine countries in the Niger River Basin in Africa created a joint river basin authority to cooperatively manage their joint water resources.

FORBES: World Water Day 2013: Water as a Catalyst for Peace

The Susquehanna River Basin Commission said the overall health of the river basin is improving, but there are some problem areas.

WSJ: Susquehanna River commission wants gauge funding

Within the implementation of the Framework Agreement on the Sava River Basin (FASRB), the Sava countries drafted the Protocol on Sediment Management to the FASRB, to provide a legal basis for future cooperation of the countries on the development of the Sediment Management Plan for the Sava River Basin (Sava SM Plan).

UNESCO: OFFICE IN VENICE