Waterways play a crucial role in Dhanbad's geography, both for natural beauty and industrial utility.
- **Damodar River:** The most significant river in the region, often called the "Sorrow of Bengal" before being tamed by the Damodar Valley Corporation (DVC) dams. - **Barakar River:** A major tributary of the Damodar, flowing through the district and harnessed by the Maithon Dam. - **Maithon Reservoir:** A massive man-made lake providing water, hydroelectric power, and tourism. - **Topchanchi Lake:** Created in 1915 to supply water to Jharia, it remains a pristine water body surrounded by hills.