Flow resistance in four rivers in Victoria, Australia

Abstract

Reach-representative estimates of Manning's n are presented for a range of discharges in four rivers in Victoria, Australia: Acheron River at Taggerty, Merrimans Creek at Stradbroke West, Mitta Mitta River at Hinnomunjie Bridge, and Tambo River at Ramrod Creek. These Manning's n values have been determined from discharge and water surface slope measurements at gauging stations on these four rivers. Manning's n was found to remain almost constant over a range of common discharges, and was found to be a better descriptor of flow resistance than Darcy Weisbach f, Chezy C and log-law Zo for these rivers.