Monitoring the Effectiveness of Restored Road-Stream Crossings
Connectivity of stream systems is important to ensure that all life stages of aquatic organisms can freely move through all areas of the “biological corridor” to access the resources they need. Restoration and maintenance of culverts and other barriers under roads are major management priorities, and millions of dollars have been invested to restore connectivity. Therefore, it is important to have useful methods available for evaluating the effectiveness of passage restoration. USGS scientists Robert Hoffman and Jason Dunham and a U.S. Forest Service co-author compiled the results of a national workshop held in March 2010 to identify effective methods for evaluating and monitoring the success of restoring road-stream crossings. Basic monitoring methods are discussed, including applicable situations, design and implementation, special funding, and partnerships. Guidelines are based on questions to be addressed at each site, and will facilitate prioritization of restoration projects and determine if original goals were met.
Hoffman, Jr., R., Dunham, J.B., Hansen, B.P., 2012, Aquatic Organism Passage at Road Stream Crossings - Synthesis and Guidelines for Effectiveness Monitoring: U.S. Geological Survey Open-File Report 2012-1090, p. 64. [Details]