The Weir's of Crump

Born in 1882 was the civil engineer Edwin Crump, interestingly he designed the self titled Crump weir, it is used to measure stream flows in open channels, he died in 1961. W.R White later studied the Crump weir. 

The Crump weir is a "two dimentional triangular weir, it has has a horizontal crest in the transverse direction and a triangular shape in the streamwise direction", wikipedia. But, what exactly is a weir;

"A weir is a small dam built across a river to control the upstream waterlevel". Practical Engineering. It also draws to attention within the above linked blog post that it should be considered that water powered the mills of history for a long time. Consider also that weirs can help with the flow of boats that are also navigating the river, historically this would have been vital to trade. The relevance to my studies. 



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