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Pethebridge, R., A. Lugg and J. Harris (1998). Obstructions to fish passage in New South Wales south coast streams. NSW Fisheries, Cronulla, N.S.W. (Australia).
All Australian freshwater fish have a need to move between habitat areas in streams and most freshwater species of southeastern Australia are known to migrate at some stage of their life cycle. In the southern coastal areas of New South Wales, a survey was undertaken to identify and document fish passage obstructions. The 254 obstructions documented included high dams, farm dams, fixed crest weirs, rock weirs, culverts, causeways, bridges and tidal floodgates, with causeways and culverts being the most common structures to obstruct fish passages. A fishway priority scheme was developed to provide a quantitative, objective basis to rank the priority of a fish passage restoration project for any obstruction, either by building a fishway or removing the obstruction. The evaluative criteria used include the size of the river system, location of the obstruction, presence of threatened species and the severity of the obstruction.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/URL: http://www.umesc.usgs.gov/data_library/fisheries/fish_passage/pethebridge.html
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