Let us know what you think of the Roadmap website. Provide your feedback →

Nature-Based Solutions Case Study Search

This database contains over 400 implementations of nature-based solutions. Use the filters to identify the case studies most relevant to you.

While all cases here exemplify applications of NBS strategies, they were gathered from various sources and not all were written using the framing of nature-based solutions. To qualify as a nature-based solution, a project must provide benefits to both people and nature. In some instances, the human benefits are present but not emphasized in the case write ups; these cases were included because they still provide useful information to learn from.

Other searches:

Find nature-based solutions strategies (project types)

Find tools and resources

Bird Track Springs is a 2-mile reach of the Upper Grande Ronde River in eastern Oregon that has been degraded and altered by human activity. The once multi-threaded, well-connected river and floodplain became a single-threaded river with little connectivity and degraded habitat. This project aims to reconnect the river to its floodplain, increase habitat complexity, and restore salmonid populations. 

State/Territory:

Cape Lookout State Park, located in coastal Oregon, experienced extreme erosion and storm damage to its beach and infrastructure. Instead of a less aesthetic, more expensive, seawall or revetment, managers opted to build a cobble berm backed by an artificial dune to increase coastal protection and enhance the natural shoreline community. 

NBS Strategies:
State/Territory:

The Clackamas River is a tributary to the Columbia River that has been degraded by beaver removal, logging, mining, overgrazing, and urban development. This disconnected the floodplain from its river and negatively impacted fish populations. This project restored habitat to help threatened and endangered salmonids. 

State/Territory:

Oregon DOT designed several nature-based solutions to protect the 363-mile-long Oregon Coast Highway (U.S. 101) from extreme events and coastal bluff erosion. Three demonstration sites were selected, where cobble beaches were restored to enhance natural wave protection along the backshore.

State/Territory:

The BLM led the restoration of sagebrush steppe and riparian plant communities on 75,000 acres of Eastern Oregon rangeland. Treatment focuses on removing western juniper, a desert conifer species that is spreading across the landscape and outcompeting other desert plants. Restoration efforts used a sequential, three-step approach: juniper cutting, controlled burns, and in some cases, aerial reseeding.

State/Territory:

The Hassalo on Eighth community transformed a previously underdeveloped area—formerly a vast parking lot—into a vibrant, eco-friendly, 24-hour community minutes from downtown Portland. The development features green roofs, rainwater harvesting and treatment facilities, on-site wastewater treatment and reuse, infiltration systems, district energy, and natural daylighting.

State/Territory:

Johnson Creek in Portland Oregon faces frequent nuisance flooding events due to urbanization and development-caused degradation. The city of Portland began purchasing vulnerable properties and moving people out of the floodplain, in order to begin reconnecting Johnson Creek to its floodplain and restoring wetland habitat. 

State/Territory:

Kerry Island is a part of the Lower Columbia River Estuary in Oregon, and has been severely degraded by agriculture and industrial development. The Columbia Land Trust acquired the land and removed a levee to restore tidal fluctuations. They also restored marsh habitat, improving populations of important fish species. 

State/Territory:

In May 2016, a 36-acre prescribed underburn was completed by BLM crew on the Marty and Peggy Main property near Trail, Oregon. The Main property is a 120-acre parcel consisting of low-elevation, dry, mixed conifer forest typical of the area. The overarching goal is to restore ecosystem processes and return the site to a more frequent, lower-severity disturbance regime.

State/Territory:

Marsh in Oregon's South Slough National Estuarine Research Reserve was diked in the early 1900s, leading to soil subsidence. This project aimed to restore salt marsh function and establish marsh channels to support fish habitat. The dike was removed and material from the dike was used to raise marsh elevation through thin layer placement. 

State/Territory:

The Southern Flow Corridor project works to relieve more than 1,214 hectares of community from regular flooding and reconnect more than 65 hectares of Tillamook Bay’s salmon-bearing habitat to streams. This project converted retired dairy land into wetlands by removing a levee system. This restored 179 hectares of habitat and opened new tidal channels. 

State/Territory:

Crystal Springs Creek runs directly through the city of Portland, Oregon. This creek was disconnected from its floodplain from urban and agricultural development and channelization, leaving the water too warm for important salmonid species. This project restored 730 meters of the creek, improved salmonid habitat, and created a thriving urban park.   

State/Territory: