The F-1 Flood Plain District herein established is intended to provide a reasonable approach to flood control based on present information. As additional information becomes available, the extent of various boundaries shall be so altered to maintain this reasonableness. The Zoning Code does not imply that areas beyond the district limits will be free from flooding; nor shall the Zoning Code, or districts established herein, create a liability on the part of, or cause action against the City or any office or employee thereof, for any flood damage that may result from reliance upon the Zoning Code or flood district so established.