51.Chapter 5 regulates the construction of controlled reservoirs by imposing a requirement upon reservoir managers to appoint a construction engineer to supervise the relevant works, and by imposing a system of reporting and certification in respect of the works. Section 32 sets out the works that are to be treated as construction of a controlled reservoir for the purposes of the Act, which include restoration to use, alterations to capacity, discontinuance (i.e. reducing the level of water the reservoir is able to hold below 10,000m3) and abandonment (i.e. rendering a reservoir incapable of containing water above the natural level of the surrounding land). Unless such works are being carried out, there is no requirement to appoint a construction engineer.