Dam Removal & Stream Restoration

GZA supports dam owners, municipalities, utilities, conservation organizations, and other project stakeholders through the full dam removal and stream restoration process. Services include alternatives and feasibility studies, structural and geotechnical evaluation, hydrologic and hydraulic analysis, sediment characterization and transport assessment, permitting, environmental review, design, bidding support, construction-phase services, and post-construction monitoring.

Dam removal planning requires coordinated evaluation of public safety, adjacent infrastructure, channel response, accumulated sediment, aquatic-organism passage, wetlands, water quality, cultural resources, and stakeholder objectives. GZA’s multidisciplinary teams bring these considerations together to develop designs that are constructible, permit-ready, and responsive to project-specific constraints.

For stream restoration and stabilization, GZA evaluates channel form and process, erosion mechanisms, sediment loading, habitat conditions, and watershed influences. Solutions may incorporate natural-channel and bioengineering methods, targeted bank stabilization, grade control, floodplain reconnection, channel and habitat enhancement, and fish and wildlife passage improvements. The selected approach is tailored to site conditions rather than relying on a single stabilization method.

GZA also provides stream assessment and ecological services, including rapid bioassessment and Rosgen stream classification, fisheries and aquatic-invertebrate studies, wetland evaluation, habitat and continuity assessment, and restoration monitoring. Engineering and natural-resource specialists work together so that hydraulic performance, channel stability, permitting requirements, and ecological objectives are addressed in an integrated manner.