Flood-prone

The flood-prone Yangtze river, which runs from Yunnan in the southwest to Jiangsu and Shanghai on the east coast, has seen a massive increase in water volumes, causing flooding in many of its tributaries and bringing water volumes in the giant Three Gorges reservoir close to record levels.

Algeria has many flood-prone areas.

More controversial proposals are on the table, too, like buying up some of the most flood-prone homes and turning the land into a flood-absorbing park.

Now NR is examining other trouble spots where rock armour could work, such as stretches of flood-prone track near Abergavenny and Machynlleth.