Which of the followings is not determined through flood routing?
Show Hint
- Inflow rate
- Stage height
- Storage volume
- Outflow rate
The Correct Option is A
Solution and Explanation
Flood routing is a procedure used to determine the shape and timing of a flood wave (hydrograph) at a downstream point, given the hydrograph at an upstream point. It essentially solves the continuity equation: Inflow - Outflow = Change in Storage.
Step 2: Identify the inputs and outputs of the routing process.
- Input: The primary input for any flood routing procedure is the Inflow rate hydrograph at the upstream end of the reach or reservoir.
- Outputs: The goal of the procedure is to calculate the outputs, which are th Outflow rate hydrograph at the downstream end. In the process of calculation, intermediate values like the Storage volume within the reach/reservoir and the corresponding water surface elevation or Stage height are determined at each time step.
Step 3: Determine which option is not an output. The inflow rate is the known information that is used to start the calculation. It is an input, not a result determined by the routing procedure itself.
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