- North Koel River rises on Ranchi plateau in Jharkhand.
- It joins the Sone River a few miles north-west of Haidarnagar.
- It meanders through the northern part of Betla National Park
- Why in news?
- North Koel Reservoir Project is being restarted.
- It aims to provide irrigation to 111,521 hectares of land annually in the most backward and drought prone areas in Jharkhand and Bihar.
- The construction of the project originally had started in 1972 and continued till 1993 when it was stopped by the Bihar forest department over environmental concerns.
- The Mandal dam as part of the project had threatened to submerge portions of the Palamau Tiger Reserve and Betla National Park.
- The National Wildlife Board (NWB) had cleared the project in June 2017 with certain conditions.
Thanks sir….pls cover pib also