calculator tool for weir design, rainfall-runoff estimation, and flood routing, particularly under submerged (tailwater) conditions

Advanced Weir Design with Tailwater and Flood Routing

Catchment Area (km²): Runoff Coefficient (C): Weir Crest Height above Bed (P) [m]: Discharge Coefficient (Cd): Assumed Head over Weir (H) [m]: Tailwater Depth above Crest (Ht) [m]:

Rainfall Intensity Table (mm/hr)

Duration / RP	2 yr	10 yr	25 yr
30 min
1 hour
2 hour