In: Civil Engineering
A subbasin in Mississippi has a predominant urban land use (high density development) under soils with a hydrologic soil group D and a potential abstraction of 0.53-in. Analyses of flow data indicate that for a 6-hr runoff event the flow of the unit hydrograph linearly increased to reach a peak of 9.6 ft3/s in 8 hours. As well, the time that takes runoff to travel from headwaters to outlet is 12-hr. Considering the recession phase of the hydrograph in also linear, determine the subbasin area (acres).