Modelling of Dam-Weir Operations for Environmental Quality
Abstract
It is the desire of many societies to have clean and safe potable water sources. As manmade structures are built in water supply catchments for the purposes to increase safe yield, then facilities management of these structures should be steered towards environmental quality. Hydraulics over a weir is well studied. However, this paper probes into benchmarking of flows over a Batu Kitang Weir to guide operations of an upstream Bengoh Dam in Sarawak, Malaysia. Flow releases from the dam are tried and routed through Sarawak Kiri River to achieve supercritical states at weir by means of computer modelling. For daily dam-weir operations, the modelling results suggest a condition of 20 m3/s < dam releases < 200 m3/s to meet raw water demand as well as adequate river flow regulation.
References
D.Y.S. Mah, F.J. Putuhena, L.H. Ngu, and S.H. Lai, "Modelling of Batu Kitang submersible weir in Kuching, Malaysia," The IUP Journal of Water and Soil Sciences, Volume II, No 3, pp. 25-38, August 2009.
KTA Consulting Engineers. (2003). Proposed Bengoh Dam, Sarawak Phase 1 - Assessment Study. Final report for the State Government of Sarawak, Malaysia.
R.H. Norris, and M.C. Thoms, "What is river health?" Freshwater Biology, 41, pp. 197-209, 1999.
https://doi.org/10.1046/j.1365-2427.1999.00425.x
B. Shuttleworth, A. Woidt, T. Paparella, S. Herbig, and D. Walker, "The dynamic behaviour of a river-dominated tidal inlet, River Murray, Australia," Estuarine, Coastal and Shelf Science, Volume 64, Issue 4, pp. 645-657, September 2005.
https://doi.org/10.1016/j.ecss.2005.04.007
K.F. Walker, "Serial weirs, cumulative effects: the Lower River Murray, Australia," in The Ecology of Desert Rivers, R.T. Kingford, Ed. New York: Cambridge University Press, ISBN-13: 9780521818254, 2006.
C. Gippel, T. Jacobs, and T. McLeod, "Environmental flows and water quality objectives for the River Murray," Water Science and Technology, Volume 45, Issue 11, pp. 251-260, 2002.
https://doi.org/10.2166/wst.2002.0402
R.A. Frick, R.P. Bourman, and D. Lucic, "Towards a control model for the Murray Mouth," Environmental Modelling and Assessment, Volume 1, Numbers 1-2, pp. 37-44, March 1996.
https://doi.org/10.1007/BF01874845
A. Palau, "Integrated environmental management of current reservoirs and regulated rivers," Limnetica, Volume 25, Issues 1-2, pp. 287-302, 2006.
C. Harman, and M. Stewardson, "Optimizing dam release rules to meet environmental flow targets," River Research and Applications, Volume 21, Issues 2-3, pp. 113-129, 2005.
https://doi.org/10.1002/rra.836
L.F.G. Lopes, J.S.A.D. Carmo, R.M.V. Cortes, and D. Oliveira, "Hydrodynamics and water quality modelling in a regulated river segment: application on the instream flow definition," Ecological Modelling, 173, pp. 197-218, 2004.
https://doi.org/10.1016/j.ecolmodel.2003.07.009
K.K. Jenny, D.Y.S. Mah, F.J. Putuhena, and S. Salim, "Post-flood forensic analysis of Maong River using InfoWorks River Simulation (RS)," Journal Institution of Engineers, Malaysia, Volume 68, Issue 4, pp. 41-46, 2007.
Upon acceptance of an article, the corresponding author on behalf of all authors will be asked to complete and upload the Copyright Transfer Form (refer to Copyright Issues for more information on this) alongside the electronic proof file.
Copyright Transfer Statement for Journal
1) In signing this statement, the author(s) grant UNIMAS Publisher an exclusive license to publish their original research papers. The author(s) also grant UNIMAS Publisher permission to reproduce, recreate, translate, extract or summarize, and to distribute and display in any forms, formats, and media. The author(s) can reuse their papers in their future printed work without first requiring permission from UNIMAS Publisher, provided that the author(s) acknowledge and refer the publication in the Journal.
2) For open-access articles, the author(s) agree that their articles published under UNIMAS Publisher are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0) which permits unrestricted use, distribution, and reproduction in any medium, for non-commercial purposes, provided the original work of the author(s) is properly cited.
3) For subscription articles, the author(s) agree that UNIMAS Publisher holds the copyright or an exclusive license to publish. Readers or users may view, download, print, and copy the content, for academic purposes, subject to the following conditions of use: (a) any reuse of materials is subjected to permission from UNIMAS Publisher; (b) archived materials may only be used for academic research; (c) archived materials may not be used for commercial purposes, which include but not limited to monetary compensation by means of sale, resale, license, transfer of copyright, loan, etc.; and (d) archived materials may not be re-published in any part, either in print or online.
4) The author(s) are responsible to ensure their submitted work is original and does not infringe any existing copyright, trademark, patent, statutory right, or propriety right of others. The corresponding author has obtained permission from all co-authors prior to submission to the journal. Upon submission of the manuscript, the author(s) agree that no similar work has been or will be submitted or published elsewhere in any language. If the submitted manuscript includes materials from others, the authors have obtained permission from the copyright owners.
5) In signing this statement, the author(s) declare that the researches which they have conducted comply with the current laws of the respective country and UNIMAS Journal Publication Ethics Policy. Any experimentation or research involving humans or the use of animal samples must obtain approval from the Human or Animal Ethics Committee in their respective institutions. The author(s) agree and understand that UNIMAS Publisher is not responsible for any compensational claims or failure caused by the author(s) in fulfilling the above-mentioned requirements. The author(s) must accept the responsibility for releasing their materials upon request by Chief Editor or UNIMAS Publisher.
6) The author(s) should have participated sufficiently in the work and ensured the appropriateness of the content of the article. The author(s) should also agree that they have no commercial attachments (e.g. patent or license arrangement, equity interest, consultancies, etc.) that might pose any conflict of interest with the submitted manuscript. The author(s) also agree to make any relevant materials and data available upon request by the editor(s) or UNIMAS Publisher.
