Manning's roughness coefficient for Illinois streams
Manning's roughness coefficients for 43 natural and constructed streams in Illinois are reported and displayed on a U.S. Geological Survey Web site. At a majority of the sites, discharge and stage were measured, and corresponding Manning's coefficients—the n-values—were determined at more than one river discharge. The n-values discussed in this report are computed from data representing the stream reach studied and, therefore, are reachwise values. Presentation of the resulting n-values takes a visual-comparison approach similar to the previously published Barnes report (1967), in which photographs of channel conditions, description of the site, and the resulting n-values are organized for each site. The Web site where the data can be accessed and are displayed is at URL https://il.water.usgs.gov/proj/nvalues/.
Citation Information
Publication Year | 2012 |
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Title | Manning's roughness coefficient for Illinois streams |
DOI | 10.3133/ds668 |
Authors | David T. Soong, Crystal D. Prater, Teresa M. Halfar, Loren A. Wobig |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Data Series |
Series Number | 668 |
Index ID | ds668 |
Record Source | USGS Publications Warehouse |
USGS Organization | Illinois Water Science Center |