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- 23:37, 5 December 2022 Grichards talk contribs created page Weirs (Created page with "__NOTOC__ Category:Seepage Surveillance and Monitoring :“Weirs are preferred to flumes for measuring flow in small open channels at embankments because a weir traps sediment and debris possibly produced by internal erosion, increasing the likelihood the sediment is noticed. However, the open channel conveying the seepage must have enough vertical drop for a weir. If the channel grade does not allow the weir to function as an unsubmerged weir, a flume may be necess...")