Assessment of Manning coefficient for Dujila Canal, Wasit/-Iraq

Abstract Assessment of Manning’s unevenness factor is critical significance in hydraulic readings open channel stream. ( n n ) obligatory for the computation releases, water levels, and backwater curves, as well plan curve additions. The correct value roughness coefficient ), i. H. a that accurately reflects observed data, selected by calibration process. current study aims to calculate Manning Dujila Canal due this helps developing management systems, (a branch Tigris River) was modeled using Hydrologic Engineering Center River Analysis System steady-flow model guess rate factor. information reserved seven cross sections calibration, then another section applied verification A statistical test on recorded data must be used verify It uses Root Mean Square (RMS) test. outcomes show appropriate (0.025), providing reasonable arrangement amid designed perceived sketches