The impact of downstream face inclination on the discharge coefficient of chute spillways is thoroughly examined in this work using experimental investigation. Physical models were used in a series of controlled discharge laboratory tests where downstream face angles ( theta = 30 deg, 45 deg, 60 deg , and 70°) were systematically varied in parallel. Twenty foam models with five different lengths of the crest (Lcr) values 10, 11, 12, 13, and 14 cm were created in the lab. Additionally, each model was attached to a plain stilling basin that measured 1 m in length (L) and 3 cm in depth. Every test was carried out in a lab flume that was 15 m long, 0.3 m wide, and 0.45 m high. The discharge values are 21.3, 20.9, 19.7, 19.3, 18, 15.6, and 14.8 l/s. A non-dimensional technique, according to Buckingham's theorem, linking the value of Cd as a dependent variable and other independent non-dimensional variables of (), (), 0, Fr1, and and was determined by dimensional analysis. SPSS v26 was used to process experimental data to determine a non-dimensional relationship between the coefficient of discharge and the other geometric and hydraulic non-dimensional parameters. The results also demonstrate how submergence conditions and downstream geometry interact on the value of Cd. A predictive association for Ca with a coefficient of determination of 0.955 is suggested based on the combined dataset, providing increased accuracy.