The degree of flood protection required by this article XIV is considered reasonable for regulatory purposes and is based on available information derived from engineering and scientific methods of study. Larger floods may occur or flood heights may be increased by human-made or natural causes. This article XIV does not imply that development, either inside or outside of the SFHA, will be free from flooding or damage. This article XIV does not create liability on the part of the village or any official, officer or employee thereof for any flood damage that results from reliance on this article XIV or any administrative decision made lawfully thereunder.