The town's geography is intimately shaped by water.
* **Meenachil River:** Erattupetta is situated on the banks of this iconic river. The river is formed in this region by the confluence of several smaller streams originating from the Western Ghats, including the Poonjar River and the Thidanadu River. * **Marmala Waterfalls:** Located a short distance from the town in Teekoy, this magnificent waterfall drops into a deep rocky basin and is surrounded by dense rubber estates and forests, making it a popular, though rugged, natural attraction.
