Title: Hydrological modelling of Usk River basin in the State of Wales, UK using geospatial technologies

Authors: Hayder H. Kareem

Addresses: Faculty of Engineering, Structures and Water Resources Engineering Department, University of Kufa, 54001, Al-Najaf, Iraq

Abstract: The measurement and analysis of river basins is one of the basic tasks in morphometric studies, and it is extremely important for many geomorphological and hydrological applications. The current study aims to identify the hydrological characteristics of the Usk River basin in the State of Wales, United Kingdom, with boundaries (51°32'31")N and (2°59'6")W. Digital elevation model (DEM) and Landsat 8 of the study area are downloaded and analysed hydrologically using geographic information systems (GIS). The results showed that the basin of the Usk River descends from an elevation of 879 m in the northeast at the city of Brecon (the source) to the southwest with an elevation of (-32 m) at the city of Newport (the estuary). The topographic wetness index (TWI) ranges between (5.5-7.5), and sometimes rises to range (15-25). The sediment transfer index (STI) indicates that the Usk River and its tributaries do not carry significant river sediments.

Keywords: hydrological modelling; Usk River Basin; geospatial technologies; GIS; geographic information systems; TWI; topographic wetness index; STI; sediment transfer index; State of Wales; UK.

DOI: 10.1504/IJW.2023.133992

International Journal of Water, 2023 Vol.15 No.3, pp.175 - 189

Received: 19 Jan 2023
Accepted: 10 May 2023
Published online: 09 Oct 2023 *