With the force of a giant waterfall, the dam burst,launching a wall of water 18 meters high down the funnel toward Johnstown faster than warnings could be sounded.

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At the newly christened Rocky Rapids we took a stop-start, bumpy slide down a tiny rocky waterfall, while at the section of the river called Lake Balboa Ledge, we had to get out and walk among huge boulders.

BBC: Paddling Los Angeles�� rebounding river

It's also where you'll find England's highest waterfall - the 220ft Canonteign Falls, which cascades down a gorge into the River Teign.

BBC: Devon's rivers: The River Teign

First take a saunter around the blossoming, waterfall-studded gardens of the Emirates Heritage Village down on the Breakwater, where you will find evidence of an older era Abu Dhabi, complete with Bedouin encampment, mosque and a re-creation of a traditional souq.

BBC: Stopover in Abu Dhabi