OJMH  Vol.4 No.4 , October 2014
Environmental Flow Assessment Using Water-Sediment Approach at the Sekampung River, Indonesia
Abstract
Environmental issue has been considered more significant in many aspects of engineering decision-making process particularly in river management. There is an increasing effort to conserve functioning of rivers for human use as well as nature, therefore environmental flow assessment has been widely developed. This paper discusses on environmental flow assessment of the Sekampung River, particularly on its middle reach. A new analytical approach based on water-sediment equations was introduced in order to determine a minimum environmental flow at the certain cross section of a river. The result of the new method was then compared with a minimum environmental flow provided by using two hydrological based methods, namely, Tennant and Flow Duration Curve Analysis (FDCA) method. The result shows that the concerned discharge provided by the water-sediment method (3.5 m3/s) is the smallest compare with a minimum environmental flow that is provided by both Tennant (5.7 m3/s) and FDCA method (4.5 m3/s). It is promising that the water-sediment method can be used as a simple approach on preliminary state of environmental flow assessment. The method involves not only water discharge but also its related sediment flow of the river in order to mitigate further ecological and morphological risks.

Cite this paper
Wahono, E. , Legono, D. , Istiarto, &. and Yulistiyanto, B. (2014) Environmental Flow Assessment Using Water-Sediment Approach at the Sekampung River, Indonesia. Open Journal of Modern Hydrology, 4, 164-172. doi: 10.4236/ojmh.2014.44016.
References

[1]   Marchand, M. (2003) Environmental Flow Requirements for Rivers: An Integrated Approach for River and Coastal Zone Management. Project Report of Integrated Water Resources Management, Delft Cluster, Delft, 86.

[2]   King, J. and Brown, C. (2006) Environmental Flows: Striking the Balance between Development and Resource Protection. Ecology and Society, 11, 26.
http://www.ecologyandsociety.org/vol11/iss2/art26/

[3]   Dunbar, M.J., Holmes, M.G.R. and Young, A.R. (2008) Guidance on Environmental Flow Releases from Impoundments to Implement the Water Framework Directive. SNIFER Report, Edinburgh, 51.

[4]   Jowett, I.G. (1997) Instream Flow Methods: A Comparison of Approaches. Regulated Rivers: Research & Management, 13, 115-127.
http://dx.doi.org/10.1002/(SICI)1099-1646(199703)13:2<115::AID-RRR440>3.0.CO;2-6

[5]   Tharme, R.E. (2003) A Global Perspective on Environmental Flow Assessment: Emerging Trends in The Development and Application of Environmental Flow Methodologies for Rivers. River Research and Application, 19, 397-441.
http://dx.doi.org/10.1002/rra.736

[6]   Chen, H. and Zhao, Y.W. (2011) Evaluating the Environmental Flows of China’s Wolonghu Wetland and Land Use Changes Using a Hydrological Model, a Water Balance Model, and Remote Sensing. Ecological Modelling, 222, 253-260.
http://dx.doi.org/10.1016/j.ecolmodel.2009.12.020

[7]   Milhous, R.T. (2009) An Adaptive Assessments of the Flushing Flow Needs of the Lower Poudre River, Colorado: First Evaluation. Proceeding of Hydrology Days 2009, Fort Collins, 25-27 March 2009, 46-56.
https://wsnet.colostate.edu/cwis312/hydrologydays/Papers_2009/Milhous_paper.pdf

[8]   Schneider, Matthias, Noack, M., Gebler, T. and Kopecki, I. (2010) Handbook for the Habitat Simulation Model. Casimir, Stuttgart, 52.
http://www.casimir-software.de/data/CASiMiR_Fish_Handb_EN_2010_10.pdf

[9]   Arthington, A.H., Tharme, R.E., Brizga, S.O., Pusey, B.J. and Kennard, M.J. (2004) Environmental Flow Assessment with Emphasis on Holistic Methodologies. In: Welcomme, R.L. and Petr, T., Eds., Proceedings of the Second International Symposium of the Management of Large Rivers for Fisheries (Volume II), FAO & MRC, Phnom Penh, 37-66.
http://www.fao.org/docrep/007/ad526e/ad526e07.htm#bm07

[10]   King, J., Brown, C. and Sabet, H. (2003) A Scenario-Based Holistic Approach to Environmental Flow Assessments for Rivers. River Research and Application, 19, 619-639.
http://dx.doi.org/10.1002/rra.709

[11]   Acreman, M.C. and Dunbar, M.J. (2009) Defining Environmental River Flow Requirements—A Review. Journal of Hydrology and Earth System Sciences, 8, 861-876.
http://dx.doi.org/10.5194/hess-8-861-2004

[12]   Mann, J.L. (2006) Instream Flow Methodologies: An Evaluation of the Tennant Method for Higher Gradient Streams in the National Forest System Lands in the Western USA. M.Sc. Thesis, Colorado State University, Fort Collins, 143.

[13]   Winemiller, K., Bonner, T., Brandes, B., Davis, S., King, R., Maidment, D. and Ward, G. (2008) Review of Desk-Top Methods for Establishing Environmental Flows in Texas Rivers and Streams. Texas Commission on Environmental Quality Report, Austin, 30.

[14]   Leonard, P.M. (2011) Emerging Trends in Environmental Flow Science. Proceedings of the 2011 Georgia Water Resources Conference, Athens, 11-13 April 2011.
http://gwri.gatech.edu/sites/default/files/files/docs/2011/4.2.2Leonard.pdf

[15]   Liu, C.M., Zhao, C.S., Xia, J., Sun, C.L., Wang, R. and Liu, T. (2011) An Instream Ecological Flow Method for Data-Scarce Regulated Rivers. Journal of Hydrology, 398, 17-25.
http://dx.doi.org/10.1016/j.jhydrol.2010.11.026

[16]   Wahono, Prasetyo, E., Djausal, A., Mariyanto and Jokowinarno, D. (2003) River Maintenance Plan for Sekampung River. GGWRM-EU, Bandar Lampung, 140.

[17]   Richter, B.D., Baumgartner, J., Wigington, R. and Braun, D. (1997) How Much Water Does a River Need? Freshwater Biology, 37, 231-249.
http://dx.doi.org/10.1046/j.1365-2427.1997.00153.x

[18]   Harman, C., Stewardson, M. and DeRose, R. (2008) Variability and Uncertainty in Reach Bankfull Hydraulic Geometry. Journal of Hydrology, 351, 13-25.
http://dx.doi.org/10.1016/j.jhydrol.2007.11.015

[19]   Wilkerson, G.V. and Parker, G. (2011) Physical Basis for Quasi-Universal Relationships Describing Bankfull Hydraulic Geometry of Sand-Bed Rivers. Journal of Hydraulic Engineering, 137, 739-753.
http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000352

[20]   Seal, B.R., Paola, C., Parker, Z.G., Southard, J.B. and Wilcock, P.R. (1997) Experiments on Downstream Fining of Gravel. Journal of Hydraulic Engineering, 123, 874-884.
http://dx.doi.org/10.1061/(ASCE)0733-9429(1997)123:10(874)

[21]   Wahono, E.P. (2002) Behaviour of River-Bed Disturbances Due to Floodplain Naturalisation and Discharge Variation. M.Sc. Thesis, UNESCO-IHE Water Institute, Delft, 286.

[22]   Ghani, A.A., Ali, R., Zakaria, N.A., Hasan, Z.A., Chang, C.K. and Ahamad, M.S.S. (2010) A Temporal Change Study of the Muda River System over 22 Years. International Journal of River Basin Management, 8, 25-37.
http://dx.doi.org/10.1080/15715121003715040

[23]   Klaassen, G.J. (1995) Lane’s Balance Revisited. Proceedings of 6th International Symposium on River Sedimentation, New Delhi, 7-11 November 1995, 671-686.

 
 
Top