Waterways play a vital role in the ecology and agriculture of the Mamit district.
* **Khawthlangtuipui River (Karnaphuli)**: One of the major rivers of Mizoram, forming part of the western boundary of the district. * **Tlawng River**: A significant river passing through the region, vital for local ecosystems and agriculture. * **Teirei, Tut, and Langkaih Rivers**: These rivers and their tributaries form a network of drainage systems across the district, offering scenic spots and supporting local irrigation.