Lake Edku represents three habitats as (1) drainage habitat; (2) lake–sea connection,which is considered the intermediate zone between Lake Edku and the Mediterranean Sea;and (3) the body of Lake Habitat. Physicochemical characteristics such as water salinity and major constituents (Ca++, Mg++, Na+, K+, CO3 , Cl and SO4), were determined seasonally during
2009–2010 through four field trips at nine locations and four drains (Edku, Bousaly, El-Khairy and Berseek drains).