Flood insurance is managed by the Federal Government, FEMA. Here is the website for infomation about flood insurance:
https://www.nfipdirect.fema.gov/login
In my experience, asking an insurance agent about any insurance coverage is likely to get you incorrect information. And, they will never put anything about coverage in writing. Insurance "agents" do not legally represent the company or, in this case, the Government. They are basically salespeople who work for a commission.