Finding of No Significant Impact for Restore and Stabilize Hoover Creek for Flood Mitigation

The National Park Service (NPS) has completed the Herbert Hoover National Historic Site (NHS), Restore and Stabilize Hoover Creek for Flood Mitigation Environmental Assessment (EA) with the signing of the Finding of No Significant Impact (FONSI) by the NPS Acting Midwest Regional Director on March 8, 2019. The FONSI (with the response to public comments) and the environmental assessment describe the final decision of the NPS for the EA.

This project would provide the ability to better manage flood protection for frequent flood events within the NHS, with consideration given to natural resources and historic resources. This project would aid in the restoration of the riparian and proper functioning conditions along Hoover Creek. Components of this project includes a flood storage detention basin, stream channel improvements to Hoover Creek, replacement of the Downey Street bridge for increased flood capacity, reconstruction of an historic retaining wall, and sanitary sewer relocation. In addition, sound mitigation berms that will help dampen sound along Interstate 80 are to be constructed.

The environmental assessment examined two alternatives in detail, addressed the environmental impacts of each alternative, and identified a preferred alternative. The FONSI explains why the Selected Alternative (Proposed Action) will have no significant effects on the human environment. It is based on the EA and the comments received from the public, interested parties, agencies, and staff during the public review period, which concluded February 18, 2019. The FONSI summarizes the public comments received, lists the responses to those comments, and identifies the changes to the text in the EA as a result of the public and agency comments.

Together the FONSI, the EA and the response to public comments represent the National Park Service's approved action restore the Hoover Creek channel to a historic period and mitigate flooding by improving in-stream capacity and to preserve and protect the site's properties and cultural resources associated with the life of Herbert Hoover.

Document Content:

HerbertHooverCreek_EA_FONSI_508.pdf   (4.5 MB, PDF file) Disclaimer: Links within the above document(s) were valid as of the date published. Note: Some of the files may be in PDF format and can be viewed using the Adobe Acrobat Reader software. You may download a free copy of from Adobe Systems.