Free Web Tool · Hydrology

Reservoir Routing

Modified Puls (Storage-Indication) routing of a triangular inflow hydrograph through a single-stage reservoir with weir outflow.

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.