In the initial stages of drainage systems planning and for independent tests of advanced runoff model performance there is a need for a simple point flow model. In these cases a method is proposed which is an improved version of the traditional Rational Method. The method, usually regarded as empirical, has a certain relationship with the kinematic wave theory. It is then discussed from both a theoretical and practical point of view based on comparisons with the performance of an advanced continuous model.
Research Article|June 01 1991
Sven Lyngfelt; An Improved Rational Method for Urban Runoff Application. Hydrology Research 1 June 1991; 22 (3): 149–160. doi: https://doi.org/10.2166/nh.1991.0011
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