The hydrology of the Wokha district is dominated by one major river system.
* **Doyang River**: The largest and most significant river in the district. It runs through deep gorges and valleys before being dammed for the Doyang Hydro Electric Project. It is vital for local agriculture, fishing, and hydroelectric power generation. * **Doyang Reservoir**: The artificial lake created by the dam is one of the largest bodies of water in Nagaland and acts as the primary roosting site for the Amur Falcons. * **Totsu Wozhu**: A small but ecologically significant local lake surrounded by steep cliffs.
