Within the framework of the Ca river basin hydraulic work planning project, the IWRP conducted a field survey held from July 13 to July 15, 2023 in Nghe An and Ha Tinh provinces in order to assess the status and collect necessary documents for the preparation of the above-mentioned plan. The mission composed of representatives of the plan management unit of the Department of Water Resources; the planning consulting agency, i.e., the IWRP; and representative of the inspecting agency, i.e., the Vietnam Academy of Water Resources.

The Ca River Basin Hydraulic Work Plan is to research and propose solutions for hydraulic work development for (i) sustainable exploitation, use, and development of Ca river basin water resources, taking into account the impacts of climate change, sea level rise, upstream development, serving multiple purposes (agricultural production, fisheries, domestic water supply, industry and other socio-economic sectors); (ii) drainage for agriculture, urban areas and industrial zones; (iii) flood prevention and disaster reduction for the river basin; and (iv) improvement of the water environment to meet the requirements of socio-economic development, contributing to water security of the basin by the year 2030 with a vision to 2050.

The mission carried out a field survey of hydraulic works along the Ca river such as Nam Dan sluice, Do Luong barrage, water intake structures in the mainstream, etc. to assess the water intaking capacity, advantages and disadvantages of different proposed methods/solutions. The mission also focused on surveying the potential location for the proposed weir on the Lam River as basis for further calculation and selection of the location and scale of the proposed weir in the Plan.