Author(s): Rui Marinheiro; Jose Pedro Matos; Jorge Matos; Vitor Faria E. Sousa; Ines Meireles; Manuel Mahunguana
Linked Author(s): Jorge Matos
Keywords: No Keywords
Abstract: River discharge estimation using discharge rating curves is a widely used technique due to its performance and practicality. Discharge rating curves are most appropriate when measurement sections are ideal (straight river reaches, free from backwater effects, and stable in time), and calibration includes measurements taken from low to high discharges. Unfortunately, it is not always possible to measure at such locations. A telling example is the hydrometric station of Zumbo, which is located between the Cahora Bassa reservoir and the border of Mozambique, Zambia, and Zimbabwe, being affected by the backwater curve of the former. This work introduces and explores a conceptual modification to the classical discharge rating curve that, with the addition of 1 calibration parameter, achieves more accurate results than existing formulations that add 2 or more.
Year: 2024