NM CID GF-4 Practice Questions - New Mexico CID GF-4 Drainage Or Flood Control Systems Contractor Examination Exam

Why is the Rational Method generally not used by itself to size a detention pond?

It produces only a peak discharge and does not give a runoff hydrograph or account for storage routing It can be used only in SI units It requires a 24-hour rainfall distribution that New Mexico never publishes It applies only to agricultural watersheds larger than 10 square miles

Correct Answer:

It produces only a peak discharge and does not give a runoff hydrograph or account for storage routing

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