St. Clair’s Falls is one of the widest waterfalls in Sri Lanka and is commonly known as the “Little Niagara of Sri Lanka”. It is one of six waterfalls affected by the Upper Kotmale Hydropower Project.
The falls are situated 3 kilometres (1.9 mi) west of the town of Talawakele on the Hatton-Talawakele Highway in Nuwara Eliya District.[
The falls are located along the Kotmale Oya, a tributary of the Mahaweli River, as it cascades over three rock outcrops into a large pool, running through a tea estate, from which the falls derive their name from. The waterfalls consist of two falls called “Maha Ella” (Sinhalese “The Greater Fall”), which is 80 metres (260 ft) high and 50 metres (160 ft) wide and “Kuda Ella”, (Sinhalese “The Lesser Fall”), which is 50 metres (160 ft) high and located immediately downstream of the main fall. St Clair’s falls are the 20th highest waterfall in Sri Lanka.
Reference – Wiki