This study evaluates economic and environmental impacts of Ban La project on local communities: upstream of the Ban La dam; flooded area and irrigation areas downstream from the proposed dam. Private costs and benefits as well as public costs and benefit are estimated for the project in order to arrive at the total net social benefits. Contingent Valuation Method (CVM) is used to estimate the costs and benefits associated with intangible item or non-market goods. The study found that the net present value of social benefits at 10% discount rate and 30 years project operation period is positive (BVND 533.8). Benefit-Cost ratio is 3.18 and Internal Rate of Return (IRR) is 11%. Sensitivity analysis is also performed to detect responsiveness of the investment to changes in discount rate...
The purpose of this study is to find out the status and to assess the performance of the WUA through participation of the local people after seven years of operation. Cost - benefit analysis was performed to evaluate the efficiency of the project in terms of economics. The results show that this project bring not only private benefits but also public benefits to the community with value of NPV and B/C ratio of greater than 0 and 1 respectively.
The proposed study area is located within the Balui sub-watershed of the upper Rajang River Basin in the interior of Sarawak. The Bakun catchment area is located between latitudes 1.5°N and 3.0°N and longitudes 113.5°E and 115.3°E. The catchment upstream of the dam site covers an area of about 1.5 million hectares (ha). The watershed and river are respectively the largest (44,200 km2) and the longest (>900 km) in Malaysia and the Balui or Upper Rajang sub-watershed represents 34% of the entire Rajang watershed.