Development of a water surface area-storage capacity relationship for Namodope Reservoir, Uganda. Issue 3 (2nd July 2020)

• Record Type: Journal Article
• Authors: Tunji, Lawal Abdul Qayoom; Sempewo, Jotham Ivan; Mbatya, Wilberforce
• Is Part Of: Journal of applied water engineering and research. Volume 8:Issue 3(2020)
• Page Start: 183
• Page End: 193
• Publication Date: 2020-07-02
• Subjects: Reservoir sedimentation level -- remote sensing -- Reservoir capacity -- Region-based equation; Water-supply engineering -- Periodicals; Water-supply engineering; Periodicals; 627.05
• DOI: 10.1080/23249676.2020.1787243
• Languages: English
• ISSNs: 2324-9676

Abstract

Abstract : The conventional methods of assessing reservoir sedimentation are usually time-consuming, laborious, weather dependent and hence expensive. Geospatial technology has provided a tool to carry out reservoir capacity survey rapidly, frequently and economically. The accuracy of this geospatial technology is enhanced when used with empirical relationship between the reservoirs' parameters (volume and area). However, the use of existing empirical relationship is limited to the region for which they were developed. Hence this study developed a water surface area-storage capacity relationship for Namadope reservoir for Uganda region. This empirical equation, in the form of 'Capacity = 0.0000173* Area 2.1799 ', was developed based on both field work and remote sensing. The validation process adopted in the study indicate accuracies of 86.7% and 73.3% for the water surface areas and reservoir capacity respectively. Using this validated technique the study inferred that the Namadope reservoir has lost a capacity of 65, 058 m3 in a period of 18 years.