Water Harvesting and Storage in Valleys Using Weirs

Water Harvesting and  Storage in Valleys  Using Weirs

A weir (sometimes called an overflow dam), is a small dam created across a valley or river channel and often used to create an impoundment reservoir. The term weir is also sometimes used to describe the crest of an overflow spillway on a large dam. In most cases, weirs take the form of a barrier across the river that causes water to pool behind the structure (just like a dam), but allows water to flow over the top. Weirs are commonly used to alter the flow regime of the river, prevent flooding, measure discharge. They… Continue reading →