27. Development of Hydraulic Geometry Equations for Middle Tapi River, India

In present study, hydraulic geometry equations are developed for middle Tapi river, India to assess the variation in hydraulic parameters at Bhusawal, Padalse, Sukhwad, Gidhade, and Sarangkheda stream gauging stations on decadal basis while considering the mean annual discharges of respective periods for the analyses. The insignificant variations in water surface width with the discharge has indicated box shaped cross-section at Sarangkheda stream gauging station. On other hand, large variations in water surface width with the discharge at Padalse station indicated dish shaped cross section at the same stream gauging station. The nature of hydraulic geometric equations has indicated higher stream powers (higher m/f values) at upstream gauging stations, i.e., Bhusawal and Padalse, vis-à-vis downstream gauging stations, i.e., Sukhwad, Gidhade and Sarangkheda stream gauging stations. Present study would be useful in planning appropriate river training structure and design of efficient hydraulic structures in the respective river.