Most of the coastal lakes, such as Lakes Kasumi and Hamana of Honshu, are drowned former valleys, the bay mouths of which have been dammed by sandbars.
Near Rhayader the Wye is joined by the Elan, the upper valley of which has been dammed to form reservoirs for supply of water to Birmingham.
The valleys between the mountains are drained by streams, many of which, having been dammed for water-storage tanks, provide irrigation for cultivation.
As an alternative to the pipeline, a regional environmental group called EcoPeace Middle East has proposed restoring the flow of water in the Jordan River, which has been dammed and diverted until only 10% of its former flow reaches the Dead Sea.
My first Thanksgiving in Angels Camp George called and said the Feather River, which had been dammed, was doing a release over the holiday.
They discovered that the entrance was blocked and water from the river, which had been dammed by the slide, was coming in via a secondary tunnel.
It has been dammed to form the reservoir Lake Marion, which is connected by a navigable waterway, Lake Moultrie, and the Cooper River to Charleston.
The Molonglo River which flows across the Molonglo plain has been dammed to form the national capital's iconic feature Lake Burley Griffin.
In the Amazon basin, the authors said, 334 dams have been proposed which together could devastate fisheries and lead to deforestation.
