Fed by groundwater, it has a surface area of 127 ha (310 acres) with a 7 km (4.3 mi)-long shoreline, and is 18 m (59 ft) deep.

[2] The Lake Abant and the surrounding area covering 1,196.5 ha (2,957 acres) was protected as a natural park in 1988.

Scots pine, larch, beech, oak, poplar, ash, hornbeam, willow, juniper trees and rhododendron, tamarisk, hazelnut, medlar, parsnip, hawthorn, holly, rosehip, fern, blackberry, strawberry, mint, raspberry, ivy, nettle, horsetail and meadow grasses form the main trees and shrubs.

[2] The park area is also home to bird species such as water birds, wild goose, wild duck, heron, coot, cormorant, crane, predator hawk, falcon, black vulture, golden eagle, hawk, owl and other bird species; lark, jackdaw, eagle owl, peregrine falcon, woodpecker, blackbird, nightingale, finch and goldfinch.

[2] The national park can be reached by a 22 km (14 mi) road departing from the highway D-100 or the motorway O-4 between Ankara and Istanbul.