Installation of Weirs For Stream flow Measurement

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Date
1962
Authors
Lindley M.
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Abstract
Figures for the maximum and minimum flows to be expected were given by E.A.A.F.R.O. and these limits were used in the weir design. The structures were designed as compound sharp and broad-crested weirs. the length of the lowest sharp-crested section being chosen to give full aeration of the nappe at the lowest flow expected. Limited funds and the nature of the site dictated that full clearances at the higher heads could not be obtained and rating by current meter was planned for discharges in excess of the capacity of the sharp-crested notches. Considerations of velocity of approach render such current meter ratings essential for very high flows, but this involves considerable difficulties in the timing of rating operations.
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East African Agricultural And Forestry Journal, XXVII (Special Issue), p. 25-26