ERO was contracted to complete baseline documentation and Level II historic resource documentation for the extensive canal headworks in Jefferson County, Colorado. ERO completed a modified Historic American Engineering Record to state standards that included high resolution digital photographs, scaled elevation drawings, and a narrative history that required archival research. We accommodated an accelerated schedule by including the high resolution digital photographs and the narrative history during baseline documentation; essentially completing the Level II work by the time the memorandum of agreement with the State Historic Preservation Officer was signed to ensure that our client would be able to rehabilitate the headworks on schedule.