Tuensang's geography is defined by several important river systems that carve through the hills and support local agriculture.
* **Dikhu River**: One of the most prominent rivers in Nagaland, it forms a natural boundary in parts of the district and is a vital source for local fishing and irrigation. * **Zungki River**: The largest tributary of the Tizu River, it flows through the eastern tracts of the region, ultimately draining towards Myanmar.
