Quantifying Hybrid Dunes for Barrier Island Resiliency

Two photos of shorelines, first has long barrier away from shore wrapped in canvas. The second has an exposed rock barrier.

This project evaluates the effectiveness of hybrid dune systems—combinations of natural and hardened materials—for enhancing coastal protection and barrier island resilience. Through physical and ecological experiments, combined with life-cycle economic modeling, the team will generate data to guide the design, planning, and performance assessment of hybrid dunes. The effort will establish a testable framework for […]

Idealized Natural Infrastructure Simulator to Quantify Benefits

This project develops a standardized, simulation-based framework for evaluating the performance and benefits of natural infrastructure (NI) in coastal storm risk management. Using existing planning models and case study data, the research team will build idealized NI profiles (reefs, wetlands, barrier islands) and run multi-lifecycle simulations to quantify their storm protection and economic benefits. The […]

Reproducible Framework Standardized Methods to Score Resilience-Focused Outcomes of Nature-Based Solutions

Aerial color rendering of a waterway with roads bridging across, lush vegetation along large sidewalks filled with people walking along both sides of the river. There are boats on the river and buildings represented a couple of blocks out from the river with a sprawling cityscape in the upper right background.

This project develops a standardized, repeatable framework for assessing the broad, resilience-focused benefits of Nature-Based Solutions (NBS). By integrating ecological, economic, and community metrics—including the new Biodiversity Security Index (BSI)—the framework enables practitioners to evaluate alternatives more holistically. A pilot in the Great Lakes Region will test the methodology, leading to tools and publications that […]

Ecosystem and Flood Risk Management Compatibility Investigation

Aerial photo of a section of the muddy Rio Grande and flooding surrounding it amongst green trees dotting the landscape.

This research project investigates how Natural and Nature-Based Features (NNBF) have been used along the Rio Grande and its tributaries to support ecosystem restoration and flood risk management (FRM). Through case study documentation, field visits, and stakeholder engagement, the team will develop design guidance tailored to the arid Southwest. A regional geodatabase and a Design […]

Natural Infrastructure Tools for the Arid Southwest

Gabions in Action LAS VEGAS, N.M. – Gabions along the Gallinas Canyon perform during a rainstorm, July 2022. Photo by Capt. Robert Zebrowski. This photo placed second based on employee voting.

This project will deliver design resources and implementation guidance to help USACE and partner agencies integrate Natural and Nature-Based Features (NNBF) into flood risk and erosion management in arid and semi-arid regions. It addresses both technical and institutional barriers, ensuring greater adoption and impact of EWN practices in these challenging environments.

Performance Metrics for Nature-Based Solutions: Leveraging 25 Years of USACE and Partner Remote Sensing Data

Oblique view of Long Beach, MS in Harrison County showing the locations of geomorphology features such as frontal dunes, dune toes, and back troughs with a legend in the lower left and Ordinal North arrow with a meter distance marking in the lower right.

This project uses more than 25 years of USACE and partner coastal remote sensing data to evaluate the long-term performance of nature-based solutions (NBS) implemented across the country. By integrating existing geospatial tools with cloud-based analysis, the team will develop standardized performance metrics that support design, monitoring, and adaptive management of coastal NBS across the […]

Quantifying the Benefits of Nature-Based Solutions Through Numerical Modeling

This project uses numerical models and life cycle risk assessment to quantify the hydrodynamic and cost benefits of nature-based solutions (NBS) such as reefs, wetlands, and islands. Through scenario testing under extreme storm conditions, the research team will develop guidance to help engineers and planners design more effective, resilient, and cost-efficient NBS projects. Comparisons with […]

Integrating water resources infrastructure with agricultural land management to advance nature-based solutions for water quality

This project aims to harmonize water resources infrastructure, such as reservoirs and levees, with agricultural land management across the U.S., presenting nature-based solutions for improved water quality. Our objectives include identifying potential integration areas, modeling at least one such system based on stakeholder preferences, testing a nature-based solution within the selected system, devising methods to […]

Testing Efficacy of Remote Sensing to Measure Multiple Environmental Benefits of Water Level Management: A Case Study at Wilson Lake, Kansas

Water level management (WLM) is an important management approach for many different benefits at reservoirs including threatened and endangered species (TES) management.  Whooping Cranes (WHCR) are an endangered species that require shallow water depths (<18 inches), open spaces without nearby woody or tall vegetation, and a glide path free of obstructions for roost locations.  Many […]

Island Creation and Stabilization Review and AdH Modeling to Develop Best Practices, Design Criteria, and Recommendations for Large Navigable River Island and Secondary Channel Management

Large navigable rivers have been modified in ways that channelize main channels and isolate off-channel aquatic areas to concentrate flow to create safe and efficient navigation channels.  Channelization eliminates natural island forming processes and degrades existing island and secondary channel habitat.   Concurrent levee building to reduce flood risks to agriculture and urban areas isolates seasonal […]