The Shanmuganathi Dam is built across the Shanmugha River near Rayapanpatty, in the Theni district of Tamil Nadu, southern India.
It provides water for irrigation for the dry lands such as Pusarikoundan patti, Appipatti, SukkangalPatti, Vellaiammalpuram, Odaipatti & Sepalakottai of Theni district.
This dam is more scenery and situated at the foot hill of Meghamalai mountain range just 4 km from Rayapanpatty Village near Uthamapalayam and just 2km from Anaipatty village.
The Shanmuganathi Dam is located at the scenic backdrop of the Meghamalai Hills. Places of Theni districts such as Appipatti, Vellaiammalpuram, Pusarikoundan Patti, Odaipatti, Sepalakottai and Sukkangal Patti are benefitted by the water of this dam.