By historical standards, around 500 BC, most of the plain of central Macedonia was covered by the waters of the Gulf Thermaikou. The 200 BC after continental movement of soil and sediments from rivers Aliakmona, Axios and Echedorou, the waters of the sea retreated and created lagoon. After 600 years, gradually formed the so-called Lake Loudias or Giannitsa, which was the only way out of the water of the river Loudias. By 1933 the lake - swamp Giannitsa was great extent due to the supply from rivers Moglenitsa (Upper Loudias) Boda (Edessaio) Arapitsa, Tripotamo and smaller streams of Pike. The altitude was 5 meters, and mainly reach the extent of 10,000 acres.

The rest of the lake (340,000 acres) consisted of marshy ponds. In many places it was shallow and people could move away to the edges. Given that the dense vegetation, in 1928 the largest percentage of students Giannitsa suffering from malaria. The motion in the lake was the "Plavi" floating through the season. The fishermen had built huts among the reeds to facilitate their work. These "Regularity Rally huts openly and violently occupied by Bulgarians during the Makedonikou Games.

The Giannitsa lake is especially known because the bowels of the famous battle took place Giannitsa, the most important battle of the Balkan wars. H strategic position and led the Bulgarians to the choice as a center of developments. Thus became an independent kingdom komitatzidiko "installed" in the heart of Bilaetiou of Thessaloniki. The main drainage works of the lake were closed in 1936 after the final drying now distributed to landless people, mostly from Asia Minor, 288,750 acres of fertile land.