“…Surface runoff hydrographs from subcatchments serve as crucial input functions that form the runoff hydrographs for urban catchments of varying scales, configurations, and complexities [ [5] , [6] , [7] , [8] , [9] ]. Methods for modelling surface runoff should comprehensively consider a multitude of factors and specific characteristics of the subcatchment, including its configuration [ [10] , [11] , [12] , [13] ], absolute dimensions [ 14 , 15 ], slope distribution at the subcatchment's area [ 16 , 17 ], surface cover types and their spatial distribution [ 18 , 19 ], correlation between the total and effective imperviousness [ 2 , 4 , 20 , 21 ], infiltration properties of soils [ 11 , [22] , [23] , [24] ] etc. Errors at this initial stage of modelling inevitably and often significantly impact the subsequent modelling of the entire stormwater drainage system [ 25 , 26 ].…”