Water resources are critical to Korba, serving both the heavy industries and the local ecosystem.
* **Hasdeo River**: The lifeline of Korba, this major tributary of the Mahanadi River flows right through the district and provides water for drinking, agriculture, and the thermal power plants. * **Minimata Bango Reservoir**: A massive artificial lake created by the Hasdeo Bango Dam, serving as a primary water source and an emerging hub for water-based recreation. * **Ahiran River**: A smaller tributary that joins the Hasdeo within the district. * **Waterfalls**: Natural cascades like the Kendai Waterfall are prominent seasonal waterways that attract tourists post-monsoon.