Kogin Hadejia ( Hausa : kogin Haɗeja ) kogi ne dake a arewacin Najeriya kuma yanki ne na Kogin Jihar Yobe (Komadugu Yobe). Daga cikin garuruwa da biranen da suke kwance ko kusa da bankunan akwai Hadejia da Nguru . Lalacewar kogin da nufin noman rani ya haifar da raguwar yawan ruwa a yankin dausayin Hadejia-Nguru, wanda kogin yake yi tare da Tafkin Nguru . A yanzu haka kogin Hadejia yana ƙarƙashin kashi 80% na madatsun ruwa na Tiga Dam da Challawa da ke jihar Kano . "Irrigation potential in Africa: A basin approach". United Nations Food and Agriculture Organization. 1997. Retrieved 2009-10-01. "Challawa Gorge Reservoir" (PDF). United Nations Environment Program. Archived from the original (PDF) on 2009-05-09. Retrieved 2009-10-03.