G.B. Warnke & Associates, Inc.

elevation & Flood related services

“Floods are one of the most common hazards in the United States. Flood effects can be local, impacting a neighborhood or a community, or very large, affecting an entire river basin and multiple states.”
“Be aware of flood hazards no matter where you live, but especially if you live in a flood – prone area.
“Small streams and creeks can become raging rivers during a flash flood.”


Setting a benchmark on site for building construction.

Based on Building under construction.

Based on Finished construction or existing building.

flood plain designation:

Statement as to which zone structure is located.

flood plian delineation:

Field location based on observed elevations.

application for letter of map change:


letter of map amendment.


letter of map revision.