PROPOSED by Sherman Synthetic HydrographSynder’s MethodFlood RoutingMuskingum’s Method, Modified Puls For reservoir routing), KINEMATIC Wave (Channel Routing),Infiltration CapacityHorton’s EquationDesign Flood EstimationRational Formulas, Empirical Formula’s like DICKENS’ formula (Northern India) and Inglis formula (CENTRAL India), Unit Hydrographs, Gumball’s Probability distribution methods ETC.