Animals drink from a pool at one of the newly built county government sand dams across River Mutwaewa in Mwingi West. The sand dam is already filled up with water. [Philip Muasya, Standard] With many ...
A sand dam is a reinforced stone masonry wall built across a seasonal sandy river. Such small dams are especially appropriate for conserving water in areas which have only seasonal rainfall, classed ...
In Southeast Asia, the famed Mekong River is under threat from upstream dams built by China. Those dams are reducing the flow of water and sediment, but China's downstream neighbors share the blame.
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