A variety of natural and manufactured materials can provide erosion protection for stream restoration and stabilization projects. One of these products is the articulating concrete block (ACB) revetment system. An ACB revetment system is a matrix of interconnected concrete block units installed to provide an erosion resistant revetment with specific hydraulic characteristics. It is static protection and is applicable in high risk applications where no additional bank or grade movement is allowable. This course describes the ACBs currently available and some of the benefits of their use. The system consists of concrete blocks, a filter (typically a geotextile), and cables in some products. A summary of testing for hydraulic performance is presented along with a design procedure for open channel flow. Critical installation features are described for typical installations including subgrade preparation, ancillary components (such as drainage layers), filter placement, ACB placement, system termination, anchors, and penetrations Topics: Applications of ACB Revetment Systems Materials: blocks geotextiles, connections, granular filter Performance testing and evaluation Design procedures Specifying ACB revetment systems Installation procedures Subgrade preparation Placement of the ACB Anchor penetrations Example calculations Intended Audience: This course is intended for River, Geotechnical, Civil, Environmental, Water Resources, and other engineers whose job description requires a comprehensive knowledge of stream restoration and design principles and procedures.