Approximately 1/3 of the City of Columbus planning jurisdiction is located in a floodplain. The Columbus Flood Risk Management Plan was completed in June of 2013 and is intended to address all aspects of the flood risk to the community. The Plan assess the threat from the local streams, provides the background information for the companion Flood Response & Evacuation Plan, evaluates opportunities to mitigate flooding risks for specific streets and neighborhoods, and identifies regulatory actions that could prevent the flood risk from becoming worse.

The Columbus Flood Risk Management Plan was recognized with the 2013 Excellence in Floodplain Management award from the Indiana Association for Floodplain and Stormwater Management (INAFSM).

All highlighted links are PDF documents.

Flood Risk Management Plan Document Text

Exhibits 1-4 – Flatrock, Driftwood & White River Depth Mapping
Exhibits 5 & 6 – White River Road Crossing Depth Mapping
Exhibits 7-9 – Flatrock River Road Crossing Depth Mapping
Exhibits 10-13 – Haw Creek Depth Mapping
Exhibits 14-18 – Clifty Creek Depth Mapping
Exhibits 19-25 – Denois Creek Depth Mapping
Exhibits 26-30 – White Creek Tributary Depth Mapping
Exhibits 31-33 – Big Slough Depth Mapping
Exhibit 34 – Catherine Creek Depth Mapping
Exhibit 35 – Ensley Ditch Depth Mapping
Exhibits 36-38 – Wolf Creek Depth Mapping
Exhibit 39 – Dam Inundation Areas Mapping
Exhibit 40 – Floodprone Areas Mapping
Exhibit 41 – Most Promising Mitigation Project Mapping

Appendix 1 – FIS Review Details
Appendix 2 – Forecast Tool Descriptions
Appendix 3 – Critical Rainfall Data
Appendix 4 – High Water Mark Form
Appendix 5 – Considered Mitigation Options
Appendix 6 – Possible Mitigation Options
Appendix 7 – Mitigation Project Cost Estimates
Appendix 8 – Floodproofing / Buyout Prioritization
Appendix 9 – Stream Modeling Outputs
Appendix 10 – Education Materials

2018 Annual Progress Report