Int.J.Curr.Microbiol.App.Sci (2021) 10(02): 757-762 757 Original Research Article https://doi.org/10.20546/ijcmas.2021.1002.090 Assessment of Seasonal Variation in Irrigation Water Quality of Indravati River in Bastar District of Chhattisgarh Janak Ram Pali, T. Chandrakar * , A. Pradhan, G. K. Sharma, D. P. Singh, Purnima Sahu, Deepika Sahu, Madhuri Dapake and Danish Ahemad Siddiqui Shaheed Gundadhur College of Agriculture and Research Station, Kumhrawand, Jagdalpur, Chhattisgarh (India) *Corresponding author ABSTRACT Introduction Indravati River is a stream of the river Godavari. Its starting point is found to be the Ghats of Dandakaranya range, in the Kalahandi district of the state of Odisha rises at an elevation of 914 metres on the western slopes of the Eastern Ghats. It flows west- ward through the Kalahandi, Nabarangapur and Koraput districts for 164 km and after forming the boundary between Odisha and Chhattisgarh states for 9.5 km, enters the Bastar district of Chhattisgarh. After flowing 233 km in Chhattisgarh, it turns south and flows along the boundary of Chhattisgarh and Maharashtra for about 129 km and joins Godavari River at the junction of the boundaries of Maharashtra, Chhattisgarh and Telangana states. According to Interstate Agreement as per Godavari Water Disputes Tribunal (GWDT) Report, the State of Odisha has to ensure 1.3×10 9 cubic metres (45,000×10 6 cu ft) (45 TMC) of water at the Odisha–Chhattisgarh border. Now the fall is worth viewing during the rainy seasons only. River Indravati is assigned a Red category on account of an existing Major Dam in Odisha and impending threat from the series of dams International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 10 Number 02 (2021) Journal homepage: http://www.ijcmas.com The river Indravati is also known as the oxygen of the Bastar district of state of Chhattisgarh which was considered one of the greenest and eco-friendly districts found in the whole of India. This paper is an attempt to analyze the water quality of river Indravati in Bastar district for irrigation purpose. Water quality variables were measured from water samples collected from six check dams viz. Aasna, Indravati (Kumrawand), Karanji, Rotma, Narayanpal and Chitrakote in the river over a period of one year (June 2019 to March 2020) fortnightly. The samples were analyzed for pH, EC, TDS, Ca, Mg, Na, K, Cl, CO 3 2- , HCO 3 - , NO 3 - , SO 4 2- . Based on these parameters different irrigation water quality indices such as sodium percent (SP), SAR, RSC and WQI were estimated. Studies of all these characteristics indicate that Indravati river water can be safely used for irrigation round the year. Keywords Indravati river water, Irrigation water quality, SAR, RSC, Water quality index Accepted: 07 January 2021 Available Online: 10 February 2021 Article Info