Achankovil is blessed with a number of ancient temples located on either side of its banks such as the famed Achankovil Sastha temple or Sree Dharmasastha temple, which is one of the five important temples dedicated to Lord Ayyappan in Kerala. The West-flowing Achankovil river crosses Kollam, Pathanamthitta and Alappuzha districts as it courses through Kerala. The river was formed from the convergence of the Rishimala, Pasukidamettu and Ramakkaltheri rivers.
Around 128 kilometres of flora and fauna can be found on both banks of the river. The water is thought to have medicinal properties since there are numerous healing plants, including neelakoduveli, revered for its many healing properties, close to the source of this river. You can observe a variety of wildlife, including birds and wild animals, on the banks. The sand banks are visible most of the year, except the monsoons. Wild elephants wander close to the river where reeds grow wildly on the Konni side of the region.