Input
Results
Peak outflow Qout—
Peak water level h_peak—
Time to peak outflow—
Attenuation Qpeak − Qout_peak—
Volume routed—
Method
Storage-Indication: (S/Δt + O/2)_(t+Δt) = (S/Δt − O/2)_t + (I_t + I_{t+Δt})/2. Outflow O = Cd·Lw·h^1.5 (sharp-crested rectangular weir). Storage S = A_res·h. Triangular inflow rises 0 → Qp at Tp, falls Qp → 0 at Tb.