Abstract
The stage-discharge rating curve is widely used in the research for analysis of flow regime and design of hydraulic structure and river channel where the measurement of discharge is difficult especially in developing countries like Nigeria. This study sought to develop a stage-discharge relationship for Ofu River in Nigeria where water resources project planning has been limited by the unavailable of stream flow data. Discharge Measurement was carried out using Valeport Current meter while stage was measured using staff gauge at Oforachi Bridge hydrometric station from February, 2016 to January, 2017. The Stage and discharge results were used to determine the curve coefficient via regression analysis and finally the rating curve equation for the river at this station. The Oforachi Bridge serves as the permanent control, thus the curve is reliable.Keywords: Discharge, Efficiency, Ofu River, Rating curve, Hydrometric station
Highlights
Measurement of surface water flow is an important aspect of hydrology related project such as water quality monitoring, flooding, geomorphology, and aquatic life support amongst others (Meals and Dressing, 2008; Gore and Banning, 2017; Barbetta et al, 2017; Sikorska et al, 2017)
The rating curve is a very important tool in surface hydrology because the reliability of discharge data values is highly dependent on a satisfactory stage-discharge relationship at the gauging site
Ofu River stage at Oforachi Bridge hydrometric station was measured from February 1, 2016 to January 31, 2017 using three recalibrated staff gauges at Oforachi, Kogi State, Nigeria
Summary
Measurement of surface water flow is an important aspect of hydrology related project such as water quality monitoring, flooding, geomorphology, and aquatic life support amongst others (Meals and Dressing, 2008; Gore and Banning, 2017; Barbetta et al, 2017; Sikorska et al, 2017). The rating curve is an empirical or theoretical relationship existing between the water level (stage) and the corresponding flow discharge in an open channel (Braca, 2008). The rating curve is a very important tool in surface hydrology because the reliability of discharge data values is highly dependent on a satisfactory stage-discharge relationship at the gauging site.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
