HEC publications provide documentation on HEC's computer software, hydrologic engineering and planning analysis procedures, project studies, seminars, training documents, and research documents. These publications are
available for printing (see Publications to Download below).
Official publications of the Corps of Engineers, such as Engineer Regulations (ER) and Engineer Manuals (EM) etc., can be obtained from the US Army Corps of Engineers
Publications of the Headquarters web site.
Adobe Reader XI or higher is required to view these documents. The current version of the reader is free and available on
Adobe Acrobat website.