It is characterized by Quaternary age and modern terrain with swampy surface, coastal-marine sediments, subtropical climate, tight hydrographic network, wetlands, mesophilic and hydrophilic vegetation development.
Some of the riverbeds (Jumi, Khobi, Itia, Cold, Technique, Abasha, Pichori and others) along the western side of the plain and along the right bank of the Rioni River are of varying intensity and are characterized by the development of meanders.
Some of them are caverns of the former sea area and are characterized by small depths (paliastom, wide water, mulch, harkalu), while others developed in a meadows abandoned by rivers.
On a relatively dry, well-drained and saline surface of sandy dunes stretching along the coastline, where the main meadow cordon-sandy soils are developed, there are distinct peculiar, glorified groups of other Colchian vegetation.
As a result of human economic impacts, the natural structure of these groups has been severely degraded over a significant portion of the dunes and replaced by artificial forests.