Federal

National Flood Insurance Act of 1968 and Flood Disaster Protection Act of 1973

National Flood Insurance Program Regulations:

Title 44 - Emergency Management and Assistance

Hawaii Revised Statutes

Hawaii Revised Statutes § 46-11.5 (TXT, 24 KB))
(Maintenance of channels, streambeds, streambanks, and drainageways.)

Hawaii Revised Statutes § 179 (TXT, 40 KB)
(Flood Control and Flood Water Conservation)

County Flood Ordinances

City and County of Honolulu

County of Hawaii

County of Kauai

County of Maui