The Bolaq (Tatar Cyrillic: Болак; ) is a canal that once flowed from the northern part of  Birge Qaban to Kazanka (Qazansu). Today it is an isolated channel in downtown Kazan. The modern length of Bolaq is , and the width is . As a street Bolaq, or, more correctly, Uñ yaq Bolaq/Pravobulachnaya and Sul yaq Bolaq/Levobulachnaya streets is a major arterial road in Central Kazan.