A. No person shall alter, relocate or obstruct a watercourse within a flood hazard area such that the ability of that watercourse to carry the base flood is diminished.

B. The Borough Mayor shall notify adjacent communities and the Alaska Department of Commerce, Community and Economic Development, Division of Community and Regional Affairs, prior to any alteration or relocation of a watercourse, and submit copies of such notifications to the administrator of the Federal Emergency Management Agency (FEMA) and the U.S. Army Corps of Engineers. (Amended during 2016 republication; Ord. 2009-55 § 2, 2010; Ord. 85-124 § 3, 1985. 2004 Code § 15.04.100.)