Bafa Lake Nature Park

Bafa Lake is a natural dam lake located within the boundaries of Aydın and Muğla provinces, possessing significant natural, archaeological, and ecological value. In antiquity, it was a bay of the Aegean Sea, but its connection to the sea was severed due to the accumulation of alluvium carried by the Büyük Menderes River, forming the lake as it exists today. This geological process also contributed to the formation of the Söke Plain in the region.

Bafa Lake (Milas Municipality)

Geographical and Hydrological Characteristics

Bafa Lake is situated approximately 10 km from Didim, to the east of the Söke-Milas Highway. The lake covers an area ranging between 7,000 and 12,281 hectares, with a length of 15.4 km, a width of 4.5 km, an average depth of 2 metres, and a maximum depth of 25 metres. To the south of the lake rise the İlbıra Mountains, while to the north lie the Beşparmak Mountains (Latmos).

The primary sources of water for the lake are the regular floods of the Büyük Menderes River and groundwater and surface water flowing from the surrounding mountains. Changes in the flow regime of the Büyük Menderes River and the construction of flood control dams between the river and the lake have led to declines in the lake’s water level and an increase in salinity.

Bafa Lake (Anadolu Agency)

Ecological Richness and Biodiversity

Bafa Lake is an ecologically significant site at the international level due to its rich biodiversity. In 1994, it was declared a Nature Park by a decision of the Council of Ministers and also holds the status of an Important Bird Area (IBA).

• Bird Species: The lake and its surroundings provide habitat for 261 different bird species. Species threatened with extinction worldwide, such as the Dwarf Bittern and the Sea Eagle (White-tailed Eagle), breed here. During winter months, tens of thousands of birds including Greater Flamingo, White-headed Duck, Little Bittern, Black-winged Stilt, Little Grebe, Great Crested Grebe, Pygmy Cormorant, Grey Duck, Marsh Harrier, Black Kite, and Flamingo inhabit and feed in the lake. The Spoonbill nests on the islands within the lake, while the White-tailed Eagle breeds on the Beşparmak Mountains adjacent to the lake.

• Aquatic Life: The lake’s richness in zooplankton and aquatic vegetation supports fish species such as mullet, sea bass, snakehead, and the endemic Ulubat fish (Acanthobrama mirabilis), found only in the Büyük Menderes Basin.

• Vegetation: The area around the lake is characterized by typical Mediterranean vegetation. Olive groves and pine forests are particularly widespread; it is reported that Turkey’s oldest known olive tree grows on the shores of Bafa Lake. The region hosts 325 species, 22 subspecies, and 7 varieties belonging to 237 genera and 80 families. Sixteen endemic plant species have been identified, including the rare reverse tulip Fritillaria milasense. The area is also rich in aromatic plants such as sage, İzmir oregano, black thyme, and lavender, as well as edible herbs such as thyme, henbane, borage, and stinging nettle.

Bafa Lake (Anadolu Agency)

Islands and Historical/Archaeological Value

Within Bafa Lake there are five islands: İkiz Ada, Menet Adası, Kapıkırı Adası, Kahve Asar Adası, and Uyuz Ada. The tip of the İkizce Peninsula may also become an island due to rising water levels. These islands contain Byzantine-era defensive structures and monasteries, including one dedicated to the Virgin Mary.

The lake’s surroundings host numerous archaeological settlements. Remains of the ancient cities of Herakleia and Latmos, as well as the ancient theatre in the village of Kapıkırı, reveal the region’s historical depth and serve as important tourist sites. Some sections of these ancient cities fall within the boundaries of the Nature Park and are designated as a First-Degree Archaeological Site Area.

Bafa Lake (Anadolu Agency)

Land Use and Threats

Along the highway passing to the west of the lake, there are day-use coastal recreation facilities. Intensive fishing is practiced on the lake, and rural settlements are present along the southern shore. Cotton fields are found on the flat land along the northern shore, while olive groves are common along the dry and rocky coastal areas.

Bafa Lake faces several threats:

Water Quality: Alterations to the flow regime of the Büyük Menderes River and the construction of flood control dams between the river and the lake have increased the lake’s salinity and negatively impacted the ecosystem. Runoff from agricultural lands can cause pollution in the lake. Water samples from Bafa Lake and its connecting channels are generally classified as NaCl type, with observed increases in Na+ and Cl- concentrations due to anthropogenic pollutants. The lake and channel waters are typically classified as Class IV water quality based on trace element and nitrogen compound content, making them unsuitable for irrigation. However, some streams and groundwater sources are suitable for irrigation. Effluent from fish farming facilities also contributes to high ion concentrations in the channel waters.

Illegal Hunting: This poses a serious threat to the wildlife of the lake and its surroundings.

Bafa Lake (Anadolu Agency)

Conservation Efforts and Recreational Potential

Bafa Lake offers visitors diverse experiences through its natural diversity and range of activities. In 2004, the General Directorate of Nature Conservation and National Parks prepared the Long-Term Development Plan for Bafa Lake Nature Park. The Aydın Provincial Directorate of Environment and Forestry continues its efforts to prevent illegal hunting and forest loss.

Visitors can observe birds, take nature walks, set up camps, and explore the lake by boat. Additionally, activities such as mountaineering, cycling, photo safaris, painting, landscape viewing, angling, and botanical tours can be carried out throughout the year.