Water resources are vital to both the ecology and the heavy industries of Raigarh.
* **Kelo River:** The primary river flowing through the heart of Raigarh city. It provides the central water lifeline for local residents and surrounding agriculture. * **Kelo Project (Dam):** A major irrigation and water supply dam constructed on the Kelo River, located just outside the city. It supports regional agriculture and serves as a scenic, quiet spot for locals. * **Mahanadi River:** While it does not flow directly through the city, the mighty Mahanadi runs through the southern part of the Raigarh district, heavily influencing the region's geography and water table.