The lake occupies a large doline, a geological depression formed by the collapse of limestone bedrock.
It was known as Lake Korisia in ancient times, named after a temple to Athena Korisia located nearby.
Water levels are typically highest in the spring after snowmelt from the White Mountains drains into the basin.
The resident terrapin population includes a rare albino subspecies often spotted along the shoreline.
The lake's water chemistry is slightly brackish at the very bottom due to the proximity of sea-level groundwater interactions.
Lake Kournas is the only natural freshwater lake on the island of Crete, located in the Apokoronas region. It is situated in a geological basin surrounded by the White Mountains, with depths reaching up to 22.5 meters. The water level fluctuates significantly between the winter and summer months due to underground spring activity. The lake is a protected area under the Natura 2000 network for its diverse ecosystem. Visitors can explore the perimeter via paddle boats and canoes available for rent. The lakebed consists of limestone and clay, which contribute to the water's shifting color palette throughout the day. It serves as a vital wetland habitat for various bird species, eels, and freshwater terrapins.
The elevated tavernas located on the hillside north of the lake offer a panoramic view of the entire basin.
Bring polarized sunglasses to better see the turtles and fish beneath the water surface.
Visit the eastern side of the lake for easier access to boat rentals and restaurant facilities.
Wear water shoes if you plan to swim, as the lake bottom can be muddy or rocky depending on the water level.
Avoid the midday heat in July and August when the lake basin experiences intense sun exposure with little natural shade.
Respect the protected status of the area by not feeding the wildlife and strictly adhering to 'leave no trace' principles.
