Lake Onega Reservoir has an area of and volume of , i.e. almost the same as those of Onega Lake. Its construction raised the water level of the lake by . The lake contains a well-developed navigation system which is part of the Volga–Baltic Waterway and White Sea – Baltic Canal, connecting the basins of Baltic, Caspian and the northern seas. These canals allow water transport of goods from the lake to the countries from Germany to Iran; most traffic goes to Finland, Sweden, Germany and Denmark. The Onega Canal running along the southern shore of the lake there is not used
Salinas of the English Port loggerhead sea turtle ("Caretta caretta"). It hosts characteristic sand dune and wetland birds, including the greater hoopoe-lark ("Alaemon alaudipes"), the black-crowned sparrow lark ("Eremopterix nigriceps"), bar-tailed lark ("Ammomanes cinctura"), the sanderling ("Calidris alba") and the bar-tailed godwit ("Limosa lapponica"). It also has an important population of the Kentish plover: 50% of the total population of Cape Verde (150-300 individuals). Salinas of the English Port Salinas of the English Port () is a saline wetland in the southwestern part of the island of Maio, Cape Verde, northwest of the city Porto Inglês. It is a protected area ("Paisagem Protegida das Salinas