Abstract
Purpose: There seem some flaws during design by consultants because of time and cost constraints. To deal with this problem there is a need for a design review for those design parts to assess their compliance for implementation. The overall objective of the research is to analyze the causes of the design review of small farmer-managed surface irrigation schemes developed by the Community Irrigation Project (CIP) about Dang Valley. Design/Methodology/Approach: Based on selected fifteen surface irrigation schemes developed by CIP in Dang Valley, a Questionnaire survey, interviews, and observations were done along with the intensive study of Feasibility Assessment Report, project-related datasheets, and As-Built Drawings. These data have been analyzed using the Relative Importance Index (RII). Findings/Result: The study revealed that faulty survey, design, and change in local demand by users are the major reasons to change the design. The major four significant factors to cause design change in small surface irrigation schemes as obtained from the Relative Importance Index (RII) were survey leading to (1) the efficient system, (2) design with cost-effective and sustainable approach, (3) social issues, and (4) unforeseen site condition. It indicates that for the better construction and performance of FMIS there is a need for improvement in the survey, design, and other social issues like the mechanism of distributing equal water to all the beneficiary farmers. Originality/Value: The care against the influence of unnecessary political factors with due consideration of technical, social, environmental as well as the financial viability of schemes will be assured through the provision of a flexible Cost ceiling. Concept of design through extended team will be maintained. Paper Type: Action Research
Highlights
Modernization in irrigation in Nepal was introduced with the construction of Chandra Canal in Saptari district which was planned and designed according to North Indian Irrigation Technology
As per DoI (2006) one type of intake may be suitable for one specific site and may not be for other sites because all rivers and every possible intake locations are unique in behavior
Social issues are preferred by all the stakeholders as the most important factor to cause a change in design which is ranked in 3rdposition by all the parties
Summary
Many medium and large irrigation systems have been constructed using this technology. In the mid-hills, bottom trash rack type intake structures were constructed during the 1980s and 1990s as an appropriate modern technology, which is suitable for Boulder Rivers with less fine sediments. The pragmatic design of irrigation systems is always a critical issue in a developing country like Nepal. In Nepal, coordination between designing agencies and management agencies seems very weak in practice. Due to this reason, the review of design during construction is often taken. The review of design during construction is often taken
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