ABSTRACT The Yang River Basin, Thailand, has always been subjected to flooding, but due recent developments in land use there is an increase the vulnerability several parts of river basin. To mitigate impacts both structural and non‐structural measures can be taken. This paper discusses three scenario simulations focusing on flood retardation, retention, damage mitigation measures. A main tributary was simulated by a process‐based hydrological model (SWAT) coupled 1D/2D SOBEK routing model....

Agriculture productivity is regularly affected by floods and droughts, the severity likely to increase in future. Even if significant efforts are spent on water development projects, ineffective project planning often means that they continue occur or only partly mitigated, for example, Mun River Basin, Thailand, where 1,000 s of projects have been implemented. Despite this, basin experiences droughts. In this study, an analysis adverse impacts basin-scale droughts rice cultivation Basin...

Abstract Indonesia has available over 20 million ha of tidal lowlands. In their natural state these are generally waterlogged areas that may be regularly inundated for prolonged periods. Almost 4 lowlands have been reclaimed, partly by spontaneous settlers and the government. While reclaimed mainly consist clay especially government schemes a rational layout, they good potential agricultural development, with rice crop in wet season second crop, or dry food season. For successful lowland...

Most of the models developed to simulate cohesive sediment transport processes refer estuary or marine environments and are generally not for specific characteristics irrigation schemes provided with different types hydraulic structures. The aim this study is in canals. fine (FSEDT) model was using a software program estimate deposition rates sediments has been applied Gezira Scheme Sudan, which threatened by high supply from Blue Nile River. calibrated validated field data selected during...

Sediments cause serious problems in irrigation systems, adversely affecting canal performance, driving up maintenance costs and, extreme cases, threatening system sustainability. Multiple studies were done on the deposition of non-cohesive sediment and implications for design, use operation handling sedimentation is relatively under-studied, particularly cohesive sediments. In this manuscript, several scenarios regarding weirs gate tested, using Delft3D model, applied to a case study from...

Sediment and water management are key issues in irrigation schemes that suffer from accumulation of sediment along canals. This creates problems with adequate supply may lead to shortage. The aim this study was analyse improvement options for operation maintenance order achieve better A model has been developed simulate cohesive transport is a useful tool predict deposition under different scenarios. It calibrated validated by using field data the Gezira Scheme Sudan applied operation. best...

Abstract Irrigation systems performance and sustainability are affected by sediment deposition. Cohesive (suspended load) is an important problem in irrigation canals its behaviour significantly different from that of non‐cohesive (bed load). Most studies on sedimentation deal with sediment. Studies cohesive sediments mostly done rivers estuaries, but not canals. The few existing limited their use 1D models. Therefore, this study we test whether 3D model was designed for estuaries can be...

Bioremediation of petroleum sludge was done by using land farming method in micro scale; the samples were taken from PT Pertamina Musi Banyuasin district South Sumatra. This process applied Bacillus mycoides bacteria which isolated and selected contaminated soil. The research aim is to evaluate performance degrading pollutants. initial TPH concentrations soil set up at; 4.18, 6.60, 9.82, 10.87 13.42%, diluted main sample with a concentration Total Petroleum Hydrocarbon (TPH) 71.16%. Every...

Urban flooding often times staggers the livelihood in an urban area, which most likely happens lowland area. Therefore, existing drainage system should be improved order to tackle upcoming events, are more than devastating those previous years. The research location is Palembang, Sumatra, Indonesia, where 30% of its part a selected Aur Sub Catchment located Silaberanti. main objective this improve current achieve optimal design for arrangement. This was developed using Duflow Modelling...

In order to cover the crop water requirements, flow control structures such as gates and weirs are used transfer desired amount of from canals field canals. This paper examines impact gate operation selection on deposition non-cohesive sediment. The Delft3D model is simulate effects different scenarios regarding location that opened. results showed affects not only hydraulic parameters but also morphological parameters. It was found opening closer offtake resulted in less sediment at...

Ab Razak, M.S., Dastgheib, A., Suryadi, F.X., Roelvink, D. 2014. Headland structural impacts on surf zone current circulation, Proceedings 13th International Coastal Symposium (Durban, South Africa), Journal of Research, Special Issue No. 70, pp. 065–071, ISSN 0749-0208.The paper presents the morphodynamic investigation embayed beaches through impact headlands. An XBeach model was successfully applied to predict pattern and morphological features three different embayment scales for...

Operations and maintenance (OM) of water infrastructure cannot be separated from the role farmers' users associations (WUA) or farmer groups. OM needs to supported not only skillfully but also financially. This research aimed assess identify several factors affecting self-financing in management tidal lowlands agriculture, using Willingness To Pay (WTP) approach. The sample size this was 245 respondents, all which are active members WUA Primary data were collected direct interviews with...

ABSTRACT Demand‐based irrigation systems are operated according to crop water requirements. As requirements remain variable throughout the growing season, discharges in canal also vary meet demands. The system under study is a demand‐based semi‐automatic system, where flows main automatically controlled and secondary canals manually operated. headworks have been equipped with SCADA proportional integral (PI) discharge controllers itself has provided self‐regulating AVIS/AVIO downstream...