What is the term used to describe the gradual erosion and lowering of the riverbed downstream of a constructed weir?

Water Management MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Water Managementagriculture-mcqs › water-management
Published
29 Mar 2019
Last updated
28 May 2026

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Explanation

The process where the riverbed downstream of a weir erodes and progressively lowers is known as retrogression. Other options describe related but different phenomena.

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