The Bolaq is a canal that once flowed from the northern part of Birge Kaban to Kazanka. Today it is an isolated channel in downtown Kazan.
The modern length of Bolaq is 1,550 metres, and the width is 24 metres. 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.
Wikipedia https://en.wikipedia.org/wiki/Bolaq
Address 35 Pravobulachnaya ulitsa, Казань 420000, Russia
Coordinates 55°47'25.406" N 49°6'36.53" E