1. Geography & Landscape Overview

Srivilliputhur Megamalai Tiger Reserve was established in February 2021 by amalgamating two contiguous wildlife sanctuaries: the Srivilliputhur Grizzled Giant Squirrel Wildlife Sanctuary in Virudhunagar district and the Megamalai Wildlife Sanctuary in Theni district.

Stretching across high-altitude plateaus of the Southern Western Ghats, the sanctuary rises from rain-shadow dry thorn scrub at low elevations to dense montane shola forest patches and misty evergreen ridges above 1,500 meters.

Corridor & Water Security

The sanctuary acts as a vital bridge connecting Periyar Tiger Reserve in Kerala with Kalakad Mundanthurai Tiger Reserve in Tamil Nadu. Crucially, its forested ridges form the primary watershed catchment originating the Vaigai River.

2. Quick Facts & Official Metadata

Official Name Srivilliputhur Megamalai Tiger Reserve (51st Project Tiger Reserve of India)
State & Districts Tamil Nadu — Virudhunagar & Theni Districts
Notification Date February 2021
Core Area 641.86 sq km
Buffer Area 374.71 sq km
Total Reserve Area 1,016.57 sq km
Primary River Systems Vaigai River catchment, Suruliyar, Periyar watershed boundary
Key Flora Montane Shola forest, Tropical Evergreen, Semi-evergreen, Moist Deciduous
Nearest Access Points Madurai Airport (100 km), Rajapalayam Railway Station (30 km), Theni Town

3. Tigers & Western Ghats Biodiversity

Field surveys by the Tamil Nadu Forest Department and Wildlife Institute of India confirm breeding tiger populations utilizing the contiguous high-canopy corridors between Periyar and Megamalai.

Other notable flagship species inhabiting the reserve include:

  • Grizzled Giant Squirrel (*Ratufa macroura*): Near-threatened canopy species centered around the Srivilliputhur riverine forests.
  • Nilgiri Tahr (*Nilgiritragus hylocrius*): Endemic mountain goat occupying the high-altitude rocky crags of Megamalai.
  • Asian Elephant (*Elephas maximus*): Herds utilizing seasonal corridors connecting Periyar and Anamalai landscapes.
  • Lion-tailed Macaque & Nilgiri Langur: Specialist primates dependent on pristine rainforest canopy cover.

4. Visitor & Access Information

Ecotourism in SMTR is managed strictly by the Tamil Nadu Forest Department, prioritizing low-impact nature treks and regulated view-point access in designated buffer zones near Megamalai and Highwavys estate.

Best Time to Visit: October through March when temperatures are mild and mountain streams are flowing.

How to Reach:

  • By Air: Madurai Airport (IXM), located approximately 100 km away.
  • By Rail: Rajapalayam (30 km) and Srivilliputhur stations on the Southern Railway network.
  • By Road: Accessible via Madurai-Rajapalayam Highway (NH-744) and Theni-Megamalai mountain road.