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

Abstract

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

Keywords

• manning
• hec-ras
• 1d
• dujila canal
• steady flow