https://www.fox61.com/article/weather/what-to-know-flood-insurance/520-5d872e48-b702-4f0a-b913-324f1c17537e
https://www.fox61.com/article/weather/severe-weather/connecticut-lamont-request-federal-declaration-emergency-recovery-deadly-floods-damage/520-3e0ba725-6ae2-4225-8b01-2e1f9a0c892
Before cleaning up any damage it is important to document the damage by taking video and photos.
It is well known that homeowners insurance generally doesn't cover flood damage. Many agents will suggest adding flood insurance just in case of a natural disaster. Natural disaster insurance can also be purchased.
I highly recommend that every homeowner meets with their insurance agent prior to renewing a policy. Many homeowners are underinsured but they do not know it. Always take the time to read the entire policy including the fine print. If you do not understand something then consult with a lawyer.