Canoeist on LA river
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Canoeing to reclaim LA's lost river

27 August 2011 Last updated at 02:57 BST

The Thames, the Seine, the Danube are great rivers running through great cities. Think of Los Angeles and a river is hardly the thing that springs to mind.

Some people in LA do not even know the city was founded on a river, which is often seen as a concrete storm drain and a setting for big Hollywood car chases.

Yet a campaign to reclaim the river is starting to make some headway and its place in the city is beginning to become a treasure rather than an eyesore.

Alastair Leithead reports.