United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Division of Planning Research On-Call Task#8 - Assessment and Prioritization of Culverts for Enhanced Fish Passage
-
2022-01-01
-
[PDF-4.64 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final Report
-
Corporate Publisher:
-
Abstract:Culverts can be an impediment to fish passage, impacting fish populations and spawning of both migratory and non-migratory species. With increased opportunities to invest in both water resources and infrastructure, prioritizing and selecting potential locations for culvert replacement to remove fish barriers is timely. In this project, we engaged with stakeholders in the eastern basin of Lake Erie to discuss and visit both potential and completed culvert replacement project sites; these stakeholders would be strong potential partners for ODOT in the future. The OHIO team also reviewed approved NPS-IS plans for identification of fish passage barriers that may be useful planning and design-ready project sites for ODOT to pursue if funding were available. The OHIO team also developed a method to prioritize and identify potential culvert replacement project locations using a GIS-based analysis. Culverts in target, high quality watersheds on perennial or intermittent streams are identified. Their openness ratio is then calculated; a low openness ratio is poor for fish passage and suggests that the site could be a good candidate. Aerial imagery and LiDAR data are then used to calculate an average slope of the culvert from the streambed upstream to the streambed downstream of the culvert. A high average slope would suggest either a highly sloped culvert or a low to moderate slope culvert with a vertical disconnection on the downstream end; either case would be poor for fish passage. Natural breaks in the data suggested that sites with high slope (>10%) and sites with moderate slope (4-10%) should be field verified as potential project sites.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
