Waterways in Longleng are characterized by hill streams and rivers that carve through the district's valleys.
* **Dikhu River**: One of the most prominent rivers in Nagaland, it flows through the Longleng district, often acting as a natural geographical boundary. It is a vital source of water for the region and a popular spot for local fishing and recreation. * **Hill Streams**: Numerous unnamed perennial and seasonal streams crisscross the hills, feeding the local agricultural systems and joining the larger river networks.

