Rate of flood wave
Water surface elevation during floods
Maximum discharge
Answer is Right!
Answer is Wrong!
The correct answer is: B. Water surface elevation during floods.
Levees are artificial embankments that are constructed along the banks of rivers to prevent flooding. When a river is confined by levees, the water is forced to flow through a smaller channel. This increases the water surface elevation during floods.
The other options are incorrect because:
- Option A: The rate of flood wave is not affected by levees.
- Option C: The maximum discharge is not affected by levees.
- Option D: The surface slope of streams above the levied portion is not affected by levees.