Mobile Flume for Circular Channel

Abstract

A simple device to measure discharge in sewers and drainage channels is described. The unit can be quickly fixed and removed for short‐time use in circular channels. Its major advantages include low cost, reading precision, insensitivity to backwater submergence, and rapid installation in running water. A disadvantage is its limited use in terms of time whenever the water contains significant undissolved matter; the unit should be removed if it is not being supervised, since flooding or clogging might otherwise result. The governing equation for discharge as a function of approaching flow depth is established, and several recommendations for its practical use are given.