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List of contents
1 Introduction
2 Background and objectives
3 Development of Subak irrigation schemes: learning from experiences of ancient Subak schemes for participatory irrigation system management in Bali
4 Subak in the south of Bali: discharge analysis for a system approach to river basin development with Subak irrigation schemes as a culture heritage
5 Hydrology and hydraulic approaches: irrigation-drainage of Subak irrigation schemes: a farmer's perspective over a thousand years
6 Model simulations and optimisation technique
7 Analysis and scenario development
8 Evaluation
About the author
After her undergraduate and graduate degrees, Mawiti Infantri Yekti has taught and supervised undergraduate students on several subjects related to water science engineering, such as irrigation, fluids mechanics, hydraulics, and hydrology. In 2003 she started teaching as assistant lecturer for graduate students on the subjects advanced hydrology, earth fill dams and groundwater movement and in 2004 became involved as an expert in consultancies. Since then she has been involved in more than 20 water engineering design projects.
Mawitiwas responsible for two divisions in the Department of Civil Engineering in Udayana University. She was head of the reading room (small library) between 2004-2010, and secretary in the laboratory of hydrology and hydraulics from 2004 until 2008. She is a member of three professional organizations: Indonesian National Committee on Large Dams (INACOLD), Indonesian Commission on Irrigation and Drainage (INACID), Indonesian Association of Hydraulic Engineers (HATHI), and has one expertise certificate of the Indonesian Society of Civil and Structural Engineers (HAKI) in the specialization of water resources engineering.
She has 15 publications in international/national proceedings and national journals, and two accepted papers for international journals.
Summary
Quantitative research with respect to the combination of engineering and socialcultural- religious aspects based on the Tri Hita Karana philosophy in Subak irrigation schemes is original in the field of land and water development. A scenario analysis needs a good and careful system approach. Based on a Generic Algorithm the RIBASIM model was applied using the dependable 80% of discharge and shifting the start of land preparation. The results provide evidence that the cropping pattern of the fifth scenario results in an overall optimal agriculture production of the Subak schemes.
The recoverable flow considered in the river basin scheme model plays an important role in the optimisation. Nevertheless, if a normal hydro-climate occurs, the other scenarios, especially the first scenario, can be applied as well. When the indigenous knowledge of farmers is compromised with present day knowledge of agricultural and technological developments, capability of these farmers increases, thus reflects the applicability of the Tri Hita Karana philosophy on harmony among people and harmony among people and nature.
