Lake Modrac is one of the most famous and important water resources in Bosnia and Herzegovina. It is located in the central part of the Tuzla Canton, at the foot of the Majevica Mountain, and extends over an area that includes the city of Tuzla and the municipalities of Lukavac and Živinice. The reservoir itself covers an area of about 1,670 hectares, while the wider catchment area reaches almost 1,200 square kilometers. Due to its size and importance, Modrac is often called the "lungs of the Tuzla Canton" and the "sea of northeastern Bosnia."
