Question

Which of the followings is not determined through flood routing?

• A. Inflow rate
• B. Stage height
• C. Storage volume
• D. Outflow rate

Hint:

Flood routing answers the question: "If this is the flood coming in (inflow), what will the flood look like going out (outflow)?" The inflow is the known variable; outflow, storage, and stage are the variables you solve for.

Answer 1

The Correct Option is A

Step 1: Define Flood Routing.
Flood routing determines the downstream flood wave shape and timing (hydrograph) from an upstream hydrograph. It applies the continuity equation: Inflow - Outflow = Change in Storage.
Step 2: Identify Flood Routing Inputs and Outputs.
- Input: The upstream Inflow rate hydrograph is the primary input.
- Outputs: The objective is to calculate the downstream Outflow rate hydrograph. Intermediate values determined include Storage volume and corresponding Stage height at each time step.
Step 3: Identify Non-Output.
The inflow rate is a given input, not a result of the routing procedure.