Suggested citation and version history for: Coggins, L.G., Jr., and Walters, C.J., 2009, Abundance trends and status of the Little Colorado River population of humpback chub; an update considering data from 1989-2008: U.S. Geological Survey Open- File Report 2009-1075, 18 p. [http://pubs.usgs.gov/of/2009/1075/]. Version 1.0 June 22, 2010 Fixed typo in second author's name from Waters to Walters April 27, 2009, 6:00 AM PDT Initial release online at http://pubs.usgs.gov/of/2009/1075/