This tool was funded by the Regional Sediment Management (RSM) R&D project. David Biedenharn, David May, and Chris Haring provided substantial technical contributions and review.
Funding was also provided by the Flood Control District of Maricopa County, with review and contributions from Bing Zhao.
HEC used a scour calculation spreadsheet developed by PBS&J to help guide and validate the scour calculations: PBS&J Scour Analysis Spreadsheet (2008) Version 1.2
Dan Pridal and Krey Price reviewed the user manual and provided useful content.