| Valmiki Tiger Reserve / Valmiki National Park | Tiger Reserve / National Park | West Champaran, Bihar (near India-Nepal border) |
| Gokul Reservoir | Ramsar Site / Oxbow Lake | Buxar, Bihar |
| Udaipur Lake | Ramsar Site / Oxbow Lake | West Champaran, Bihar |
| Kabar Jheel | Ramsar Site / Wetland | Begusarai, Bihar |
| Nagi Bird Sanctuary | Bird Sanctuary / Ramsar Site | Jamui, Bihar |
| Nakti Bird Sanctuary | Bird Sanctuary / Ramsar Site | Jamui, Bihar |
| Ghatora Wetland | Wetland (proposed Ramsar Site) | Bhagalpur, Bihar |
| Odhani Dam | Dam / Wetland / Bird Habitat | Banka, Bihar |
| Rajdhani Reservoir | Reservoir / Biodiversity site | Patna, Bihar |
| Barela Bird Sanctuary | Bird Sanctuary | Vaishali, Bihar |
| Bhimbandh Wildlife Sanctuary | Wildlife Sanctuary | Munger, Bihar |
| Gautam Buddha Wildlife Sanctuary | Wildlife Sanctuary | Gaya, Bihar |
| Udaypur Wildlife Sanctuary | Wildlife Sanctuary | West Champaran, Bihar |
| Pant Wildlife Sanctuary | Wildlife Sanctuary | Nalanda, Bihar |
| Kusheshwar Asthan Bird Sanctuary | Bird Sanctuary | Darbhanga, Bihar |