Waterways in Spiti are primarily fast-flowing, glacier-fed rivers and pristine high-altitude alpine lakes.
* **Spiti River:** The lifeblood of the valley, originating from the Kunzum Range. It carves a vast, braided path through the desert landscape before eventually merging with the Sutlej River in Kinnaur. * **Pin River:** A major tributary of the Spiti River, flowing through the lush (by Spiti standards) and scenic Pin Valley. * **Chandratal Lake (Lake of the Moon):** A stunning crescent-shaped high-altitude lake situated at 4,300 meters near the Kunzum Pass. It is a designated Ramsar wetland site and a major destination for trekkers and campers.
