Government of Kerala
| Reserves | Sanctuary Notification | Boundary Description |
| Idukki Sanctuary | Idukki Sanctuary | Idukki Sanctuary |
| Nagarampara | Thattekkad Sanctuary | Idukki Range |
| Thattekkad Sanctuary | Idukki Section | |
| Malayattoor Idyara | Kizhukanam Section | |
| Thattekkad Sanctuary | ||
| Thattekkad Range | ||
| Thattekkad Section | ||
| Urulanthanni Section |