Aswan Dam in Egypt had to be dredged regularly to remove sediments. After construction of the dam, aquatic weeds grew much faster in the clearer water, helped by fertilizer residues. The total length of the infested waterways was about 27,000 km in the mid-1990s. Weeds have been gradually brought under control by manual, mechanical and biological methods. Mediterranean fishing and brackish water lake fishery declined after the dam was finished because nutrients that flowed down the Nile to the Mediterranean were trapped behind the dam. For example, the sardine catch off the Egyptian coast declined from 18,000 tons in 1962 to a
Economy of Egypt EuroAfrica Interconnector pointing out its importance for energy security of three countries.< Irrigation plays a major role in a country the very livelihood of which depends upon a single river, the Nile. Most ambitious of all the irrigation projects is that of the Aswan High Dam, completed in 1971. A report published in March 1975 by the National Council for Production and Economic Affairs indicated that the dam had proved successful in controlling floodwaters and ensuring recurring water supply, but that water consumption had been more than needed and shall be controlled. Some precious land was lost below the dam