Issues and Its Improvement Plans in the Implementation of the Pampanga Delta Irrigation Development Project in Philippines

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  • フィリピン・パンパンガ・デルタ灌漑事業の課題とその改善方向
  • フィリピン ・ パンパンガ ・ デルタカンガイジギョウ ノ カダイ ト ソノ カイゼン ホウコウ

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Abstract

As pointed out in reports, the low economic viability of the large-scale irrigation projects resulted to the decline in irrigation investments by official development assistance. This finding was mainly through the assessment of the present overall status in the agricultural development. There are very few studies, however, that provide for constraints in the actual implementation of projects. In one of the Philippine's large-scale irrigation projects, the Pampanga Delta Irrigation Development Project, an assessment of four development stages from planning, design, review and actual implementation was undertaken. As the results, it was clarified constraints such as uncertain necessity of the project, determination of development area without due consideration of financial viability, modifications of designs by the development stages and uncertainty of project evaluation through economic analysis. For effective implementation of the large-scale irrigation projects, it is indispensable to establish a flexible implementation system with due consideration to the financial situation of the developing country. The system should also include a more realistic evaluation method to assess project's necessity and goal focusing more on financial viability than economic analysis.

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