ICoSI 2014 pp 369-378 | Cite as

Effect of Reservoir Sediment Flushing from Wlingi and Lodoyo Reservoirs on Downstream River Water Quality

  • Fahmi HidayatEmail author
  • Surya Budi Lesmana
  • Ery Suhartanto
Conference paper


In order to cope with severe sedimentation problems in Wlingi and Lodoyo reservoirs in the Brantas River basin, East Java, Indonesia, sediment flushing has been conducted since August 1990, immediately after the eruption of Mt. Kelud in February 1990. The sediment flushing has been conducted mostly during the rainy season by coordinated gate operation to recover the reservoirs’ capacity. The largest and most intractable downstream environmental impacts associated with sediment release from reservoirs are caused by reservoir emptying and flushing. When sediment flushing measure is performed, environmental effects should be considered comprehensively. To understand the adverse environmental effects of sediment flushing in Wlingi and Lodoyo reservoirs on the downstream reaches, an investigation was carried out to study water quality before, during, and after the sediment flushing operation. This study was conducted to investigate the adverse environmental effects on the downstream reaches’ water quality of Wlingi and Lodoyo reservoirs based on the sediment flushing operation conducted on 17-19 March 2009.


Sediment Flushing Reservoir River Water Quality 



The authors would like to thank Jasa Tirta I Public Corporation, the Brantas and Bengawan Solo River Basins Management Agency, Indonesia, for providing the water quality data.


  1. 1.
    Harianto, Hidayat, F., Subagyo, E., Rianto, A., Taufiqurrachman, M., & Nugrahany, A. (2012). Management of Reservoir Sedimentation in the Brantas River Basin Indonesia. International Seminar on Dam for a Changing World, ICOLD. Kyoto, Japan.Google Scholar
  2. 2.
    Morris L.G. & Fan J. (1998). Reservoir Sedimentation Handbook. McGraw-Hill, New York. Google Scholar
  3. 3.
    Soekistijono, Aris Harnanto & Fahmi Hidayat, (2005). Coordinated Sediment Flushing in WlingiLodoyo Reservoirs and the Study of its Economics Benefits and Effect to Water Quality and Ecosystem in the Downstream Reaches, Proceeding of International Symposium on Ecohydrology, Bali, 21–23 November 2005, Indonesian National Committee for IHP-UNESCO, Indonesian Institute of Science—LIPI and Ministry of Public Works GOI.Google Scholar

Copyright information

© Springer Science+Business Media Singapore 2017

Authors and Affiliations

  • Fahmi Hidayat
    • 1
    • 2
    Email author
  • Surya Budi Lesmana
    • 1
    • 3
  • Ery Suhartanto
    • 4
  1. 1.Civil Engineering DepartmentBrawijaya UniversityMalangIndonesia
  2. 2.Jasa Tirta I Public CorporationMalangIndonesia
  3. 3.Yogyakarta Muhammadiyah University (UMY)YogyakartaIndonesia
  4. 4.Water Resources Engineering DepartmentBrawijaya UniversityMalangIndonesia

Personalised recommendations