1. A personal umbrella policy provides:

Excess liability limits above the insured's underlying home and auto policies, plus some broader coverage

A personal umbrella adds excess liability over underlying policies and can cover some claims not covered by them, subject to a retention.

2. A personal umbrella typically requires the insured to maintain:

Specified minimum underlying limits on home and auto policies

Umbrella policies require the insured to keep stated minimum underlying limits; otherwise the insured self-insures the gap.

3. Flood insurance for most homeowners is provided through the:

National Flood Insurance Program (NFIP) or private flood insurers

Flood is excluded by homeowners policies and is typically insured through the NFIP or a private flood policy.

4. A new NFIP flood policy generally has a waiting period before coverage begins of:

30 days

NFIP policies generally have a 30-day waiting period before coverage takes effect, with limited exceptions.