The khwae noi dam project due to the initiative. The main goal to solve the flooding problem. Especially in the area of the province and neighboring provinces, including Water supplement with plantations of Chao Phraya River project. As the water use in agriculture, consumption also has created a diversion dam, dragon man. To help raise the water in irrigation canal 4 District of Phitsanulok Province, wat bot district, Phrompiram district and district, Wang thong district.
The benefits of the project Kwai Noi
1. Water delivery to the cultivation in the rainy season and the dry season to irrigation areas Kwai Noi. And send extra water cultivation in dry season of irrigation project of Chao Phraya
2. Water delivery to the consumer.
3. alleviate the flood damage in the area. Phitsanulok province and in the River Kwai lower
4. As a breeding freshwater fish and be a tourist attraction of Phitsanulok.