 The oldest manmade lake in Bucharest is the Herăstrău Lake, which was completed in 1936; this lake also has the oldest sluice in the city, built between 1933 and 1936, and finalized in 2007.Lake Băneasa is located in Sectorul 1, it has a length of , a width between and , a surface area of , a depth between and , a volume of and a debit of 2.5 m/s.Lake Cișmigiu is located in Sectorul 1, it has a length of , a width of , a surface area of , a depth between and , and a volume of .