Evaluation of Newbury weirs (rock riffles) for improving habitat quality and biotic diversity in Illinois streams July 1, 2005-December 31, 2006 Author(s) Dodd, Hope R. Wahl, David H. Issue Date 2007-05-08 Keyword(s) Spoon River watershed; stream quality improvement; INHS Division of Ecology and Conservation Sciences (DECS)