Erosion Around a Pier - Diagram and 3D animations about how water flows through scour holes, causing bridge collapse. www.flow3d.com/appl/scour.htm
Scour and Countermeasures - Detailed report by the 1998 European Scanning Summary on the effects of scour on river structures, how to prevent scour and how to deal with scour. www.fhwa.dot.gov/bridge/scan-txt.htm
The Scour Problem - Discussion about the occurance of scour and how to deal with it. Contains photographs and diagrams. www.bullen.co.uk/services/scour.htm