Mahanadi in Chhattisgarh state stretches from Changori (21°41′7.61″ N, 83°22′25.56″ E) to Dudhawa (20° 18′ 37.61″ N, 81° 43′ 47.7″ E) having length and catchment area of 352 km and 69,000 km2 respectively. The major left joining tributaries of Mahanadi are Seonath, Hasdeo, Kelo and Mand river whereas Jonk, Pairi and Sukha river joins Mahanadi from the right bank. The knowledge of suspended sediment loads are important for understanding the geochemical, ecological and morphodynamic conditions of the rivers. Many practical problems in planning and design of water resource projects requires an estimate of sediment load carried by the rivers. The present study deals with the quantification of monthly and yearly sediment load at all the 13 gauging sites of CWC in Mahanadi basin of Chhattisgarh state from the year 2015–2019. The monthly average sediment load data shows that the gauging sites of Andhiyarkore, Bamnidhi, Baronda, Basantpur, Ghatora, Kotni, Manendragarh, Rajim, Rampur and Seorinarayan, have highest sediment load in the month of August of order 0.06, 0.05, 0.12, 1.54, 0.06, 0.23, 0.01, 0.1, 0.08 and 0.61 Million tons (Mt) respectively. Jondhara and Simga gauging sites on Seonath river have the highest sediment load in the month of September of order 0.50 and 0.16 Mt respectively. Whereas Kurubhata gauging sites on Mand river have the highest sediment load of 0.75 Mt in the month of July. The annual sediment load at the gauging sites of Rajim, Seorinarayan and Basantpur on Mahanadi; Andhiyarkore on Hamp river; Bamnidih and Manendragarh on Hasdeo river; Ghatora on Arpa river; Jondhara and Simga on Seonath river; and Rampur on Jonk river indicates an increase in sediment load from the year 2015 to the year 2019. Whereas, at the gauging site of Kotni on Seonath river and Kurubhata on Mand river, the suspended sediment load decreases in the same duration.