Despite the caves' perches, high above the river valley, the treasures inside are at risk from looters and souvenir collectors, as well as erosion, earthquakes, and infrequent but torrential rains.

尽管洞窟位于河谷上方的高地，但其中的宝藏还是会遭受来自抢劫者、纪念收藏家的损坏，以及侵蚀、地震和罕见的暴雨的威胁。

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Waste water from a Hungarian aluminium plant still contains toxic chemicals that threaten a local river, despite a big clean-up there, Greenpeace says.

绿色和平组织称，尽管已进行了大清理，匈牙利铝厂的废水仍含有威胁当地河流的有毒化学品。

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Despite the challenges, the green campaign will be extended to Pearl and Liaohe rivers, the entire Yangtze River basin and some key sea coast areas, Pan said.

尽管困难重重，一场绿色战役将延伸到珍珠河、辽河、整个扬子江盆地河一些重要的沿海地区，潘越表示。

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The drive to reconstruct an ecological piece of the past in Grand Rapids comes despite rising river levels that reached historic heights during heavy rains in late April, cresting at more than 21 feet and testing floodwalls.

WSJ: Real Rapids in Grand Rapids?

In 2007 the area was severely affected when 40 properties flooded despite the nearby River Severn being low and the flood plain dry.

BBC: Drainage study for flood-hit Tirley to go ahead

Bakersfield comes in fifth, while Sacramento, despite being on a river, ranks eighth.

FORBES: Magazine Article