Dual Echo Sounder Bathymetric Survey for Enhanced Management of Ruiru Reservoir, Kenya

  • Joseph K. Sang Soil, Water and Environmental Engineering Department, Jomo Kenyatta University of Agriculture and Technology
  • James M. Raude Soil, Water and Environmental Engineering Department, Jomo Kenyatta University of Agriculture and Technology
  • Bancy M. Mati Water Research and Resource Centre (WARREC), Jomo Kenyatta University of Agriculture and Technology
  • Urbanus N. Mutwiwa Agricultural and Biosystems Engineering Department, Jomo Kenyatta University of Agriculture and Technology
  • Franklin Ochieng Research and Development Department, Nairobi City Water and Sewerage Company (NCSWC)

Abstract

Lake and reservoirs have significant global function as a source of fresh water and they sustain various activities such as agriculture, fisheries, and recreation.  They play a critical role in distributing spatially and temporally the meagre water resources in most watersheds.  However, the design lifespans of reservoirs are being threatened by volume loss despite their critical role in development.  Being able to regularly monitor this volume loss is an important aspect of reservoir sustainable management.  In this paper, we present a method that combines dual echo sounding and Geographic Information System (GIS) in bathymetric survey to determine the current volume of Ruiru reservoir in central Kenya.  In the reservoir, we showed that the current volume is 2,564,590 m3 compared to the original volume of 2,980,000 m3, which implies that the reservoir has lost about 14% of its recorded volume.  Furthermore, the study established, the Depth- Surface Area - Volume relationships, important tools for reservoir management.
Published
Jul 25, 2017
How to Cite
K. SANG, Joseph et al. Dual Echo Sounder Bathymetric Survey for Enhanced Management of Ruiru Reservoir, Kenya. JOURNAL OF SUSTAINABLE RESEARCH IN ENGINEERING, [S.l.], v. 3, n. 4, p. 113-118, july 2017. ISSN 2409-1243. Available at: <http://sri.jkuat.ac.ke/ojs/index.php/sri/article/view/567>. Date accessed: 23 sep. 2017.