Author(s): Miguel La Torre; Denisse Rojas; Pedro Rau
Linked Author(s): Pedro Rau
Keywords: Current meter; Vectrino; Pantanos de Villa; Velocity Measurement; Roughness Coefficient
Abstract: Situated within the Pantanos de Villa Ramsar nature reserve in Lima, Peru, an essential wetland area for local biodiversity, the main fed channel has experienced flow alterations as a result of urbanization, wetlands water level variability, vegetation overgrowth, and sedimentation. In order to provide insights into channel management improvements, this paper aims to assess the accuracy and reliability of velocity measurements obtained from the current meter and vectrino equipments during 4 months of field monitoring. The analysis identifies a mean maximum velocity difference of 0.09 m/s between both techniques, indicating reliable data collection and processing. However, the estimated roughness coefficient indicates a high value, pointing to a need for continuous maintenance of the hydraulic operation of the wetland. Additionally, the study underlines the challenges and limitations of the measurement devices, such as the high sensitivity of the vectrino and sediment interference affecting the current meter accuracy.
Year: 2024