Buyukcekmece Lake is one of the distinctive natural features of the town of Chekmece of Istanbul, which is a water body formed at the point where the Karasodere River flows into the Marmara Sea, and it is the first fresh water reservoir in the city. The lake is distinguished by its surrounding environmental nature, where evergreen trees, animals and birds that make the lake their home are spread over its facilities. The lake, with its emerald waters, is a source of fish wealth in the country.