Abstract:
The Feasibility Study of the Irrigated Area Expansion Ban Jam-Pong Irrigation Pumping Project, Wiang-Khan District, Chiangrai Province, The result of the study shows that the irrigated area expansion by constructing elevated concrete irrigation canal meters long with 0.10 cubic meter per second discharge This canal can irrigate 350 rai for dry season paddy field. The project feasibility study is done by engineering economic analyses. The outcome of the analyses reveals that the total annual cost of construction and maintenance is around 491,759 THB (at 7% interest and 20 years period). The project benefit comes from the value of dry season paddy produces in 350 rai which is about 1,543,850 THB annually. The project benefit-cost ratio is 3.13, which indicated that this project is very feasible for commencement.