Abstract: Session G 1:50 pm (Back to Session G)
Stream Restoration Using all Wood Structures
Authors: Joe Berg and Doug Streaker
The use of wood in stream restoration structures is a logical refinement of stream restoration techniques in the Mid-Atlantic. Wood is a natural renewable resource, is less costly than the current preferred building material, and is a common feature in stream stability. With few exceptions in stream restoration in the Mid-Atlantic, wood has played a secondary role to rock in bed and bank stability design. Adding wood to riffle features to improve their habitat quality, using buried wood as a bank stabilization and habitat improvement feature, using rootwads to attenuate velocities and improve bank cover are all highly valued applications of wood in stream restoration. In general, rock weir features and boulder walls are the designers ‘go to’ solutions in high flow conditions. We will describe a recently completed project in Anne Arundel County that uses driven pile and engineered wood structures to restore ~4100-ft of headwater stream. We will discuss design, regulatory, and construction elements and provide a roadmap for designers and contractors interested in considering the increased reliance on wood structures in their stream restoration designs.