Menezes Filho, F.C.M. de and Sá, R.A. de 2019. Comparative study between empirical equations and the velocity method for estimating time of concentration. REEC - Revista Eletrônica de Engenharia Civil. 15, 1 (Aug. 2019), 221–244. DOI:https://doi.org/10.5216/reec.v15i1.56559.