Pothundi dam is an irrigation project to provide water to the hilly areas of Nenmara. The dam is unusual in being constructed without a conventional concrete core, which is employed in most earth dams to counteract the force exerted by high water pressure. The core is made up of a mixture of jaggery and quick lime and Surki and was constructed during 1800 AD. The dam is located about 8 km from Nemmara and 42 km from Palakkad; Nelliampathi, around 17 km away, is known for its Nemmara Vallengi Vela festival.