🎓 Lesson 11
D5
Storage-Indication Routing for Detention Basins
Storage-indication routing is a method to figure out how much water a detention basin will hold and release over time during a storm, by matching inflow with outflow using the basin’s storage characteristics.
🎯 Learning Objectives
- ✓ Calculate outflow hydrograph ordinates using the storage-indication equation for a given inflow hydrograph and stage–storage–discharge data
- ✓ Design a detention basin’s outlet structure (e.g., weir/orifice) to meet peak discharge reduction targets
- ✓ Analyze how basin geometry affects routing performance by interpreting stage–storage and stage–discharge curves
- ✓ Explain the assumptions and limitations of storage-indication routing compared to dynamic routing methods