Details: bathymetry survey i) establishment reference control points in the foreshore of the reservoir with dgps on the existing permanent features etc. complete for finished item of workii) carrying dcbm along the foreshore of reservoir with auto level etc. complete for finished item of workiii) conduct hydrographic and topographic survey to cover the entire area of the reservoir up to full reservoir level (30 m x 30 m grid for hydrographic survey using ibs and 30 m x 30 m grid for topographic survey)iv) preparation of contour plan with 1ft/0.3m interval and area capacity tables and curves etc. complete for finished item of work and as directed by the engineer-in-charge. topographic survey i) establishment reference control points in the foreshore of the reservoir with dgps on the existing permanent features etc. complete for finished item of workii) carrying dcbm along the foreshore of reservoir with auto level etc. complete for finished item of workiii) conduct topographic survey to cover t
Sector: Water Resource Department