1920. The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be__________________? September 7, 2025 by Admin A. 20 3/sec B. 25 m3/sec C. 30 m3/sec D. 35 m3/sec ✅ The correct answer is option B.
