YavlenkaYavlenka is a town and the administrative center of Esil District, North Kazakhstan Region of Kazakhstan. It is the administrative center and the only settlement of the Yavlen rural district. KATO code - 594230100. Population:GeographyYavlenka is located on the right bank of the Ishim River, southwest of Petropavl city, the capital of the region. Lake Alua lies to the northwest and Ulken Torangyl to the SSW.