Murrum Silli Dam

The Murrum Silli Dam or Babu Chhotelal Shrivastav Dam, also spelled Madam Silli and Mordem Silli, is an earth-fill embankment dam on the Sillari River, a tributary of the Mahanadi River. It's made in the supervision of British Raj governor Madam Silli whom it's named originally. It is located in Dhamtari District of Chhattisgarh. Built between 1914 and 1923, it is the first dam in Asia to have Siphon Spillways. Madamsilli is about 95 km from Raipur. It is one of the most prominent architectural marvels in Chhattisgarh. Its primary purpose is irrigation.The siphon spillways was made to quickly discharge large quantity of excess water from narrow available space. This excess water escapes from normal spillways & siphons from a single streach.Thus here ,part water spills through
gravity & part water by vaccume created by water falling by gravity.
On 3 June 1929 R.S. Rajendranath Sur ( Govt.Civil Engineer, Central province ) was awarded by his majesty of Britain with the title of "Rai Saheb" for his exemplary works on (Murrum silli Dam, Dhamtari Dist, Near Raipur).