Carli Creek Water Quality Project
Located at Carli Creek’s confluence of the Clackamas River south of Happy Valley, OR, Clackamas Water Environment Services (WES) designed the innovative Carli Creek Water Quality Project to filter harmful pollutants from stormwater runoff from surrounding industrial properties that were constructed before stormwater standards were in place.
Yoncalla Creek Mitigation Bank
Cascade is working with North Douglas Betterment (NDB), a local non-profit organization, to develop the Yoncalla Creek Mitigation Bank, restoring wetland conditions to portions of former log ponds.
Dahl Beach Mitigation Project
Cascade supported the Port of Portland in the development of the Dahl Beach Mitigation Project to offset impacts stemming from an early action contamination clean up, related to the Portland Harbor Superfund.
Wapato Valley Mitigation and Conservation Bank Wetland Support
Cascade is supporting the Wapato Valley Mitigation and Conservation Bank by providing wetland delineation, wetland functions assessment, and general project support to the bank sponsor.
Elk Creek Watershed Information Gap Assessment / Stream and Fish Surveys
Elk Creek, an important tributary to the Umpqua River, provides habitat for endangered coho salmon. Cascade is assisting the Elk Creek Watershed Council in assessing watershed conditions and prioritizing restoration projects.
Chehalis Basin Mitigation Bank
Hanaford Valley, Centralia, WA
Cascade designed the Chehalis Basin Mitigation Bank to complement and provide additional lift to the adjacent Big Hanaford Creek Mitigation Site by restoring, rehabilitating, and enhancing riverine wetlands and floodplain function in the Hanaford Valley.
Mitchell Creek Mitigation Site
The Cascade team designed a remediation plan for a mitigation project that was not performing as planned on Mitchell Creek in southwest Washington.
Engineering and design staff retrofitted off-channel habitat alcoves, placed woody structures throughout the stream, and conducted vegetation management.
Fernhill NTS Wetlands Vegetation and Biodiversity Analyses
Cascade is assisting Clean Water Services in setting up a long-term monitoring framework at the Fernhill Wetlands to determine if the site’s ecological goals are being met.
Shoalwater Bay Mitigation Bank
Cascade is developing an estuarine mitigation bank for the Shoalwater Bay Indian Tribe, in Tokeland Washington. The mitigation bank will include breaching of privately owned levees on land to be held in trust by the Tribe.
Big Hanaford Creek
Monitoring and Management
Cascade provides mitigation site permit compliance monitoring and manages site maintenance for two large mitigation projects in Centralia, WA. The two sites total 149 acres of mitigation area.
Pine Hollow-Jackknife Creek Watershed Assessment
Sherman County, OR
Cascade assisted the Sherman County Soil and Water Conservation District with the completion of an assessment of Pine Hollow and Jackknife Creeks, a nearly 150,000 acre watershed draining to the lower John Day River in north-central Oregon.
OR and WA
Cascade provides project support to Adapt Engineering for various development projects. We provide wetland delineation, Critical Areas Ordinance permitting and mitigation, and federal and state aquatic resource permitting.
Pacific Lamprey Migration Study
Willamette River Basin, OR
To address questions about lamprey migration patterns and distribution, Cascade analyzed radio-telemetry data for Pacific lamprey (Entosphenus tridentatus) movement in the upper Wilamette Basin over a five-year period, from 2008 to 2012.
Newell Creek Canyon
Cascade is supporting Metro in the development of a trail network and day-use area within Newell Creek Canyon located in Clackamas County. The Access Master Plan includes hiking, off-road cycling, and multi-use trails with bridges, scenic overlooks, picnic areas, restrooms, and parking.
Clackamas Partnership Strategic Planning and Grant Development Support
Cascade provided project management, facilitation, and technical support for the Clackamas Partnership’s
development of a Strategic Restoration Action Plan.
Cascade partnered with the Cowlitz Indian Tribe to develop a large-scale tidal wetland restoration project that created nearly 200 acres of estuarine salmon rearing habitat in the Lower Columbia River.
Hopkins Forest Wetland Restoration
Oregon City, OR
Cascade designed a wetland habitat restoration project at the Hopkins Demonstration Forest. The project restored the 0.45-acre site to a high-functioning wetland, creating habitat for amphibians and other wetland-related species.
Garret Creek Mitigation Bank
Cascade staff developed the Garret Creek Mitigation Bank in Molalla, Oregon. This bank was approved in 2008 as the only mitigation bank in the Pacific Northwest with CWA Section 404/401–approved stream credits.
Rinearson Natural Area Restoration
Clackamas County, OR
Cascade developed the engineering design for dam removal and channel enhancements as well as producing a floodplain vegetation planting and management plan, including construction documents.
Cowlitz Estuary Restoration Feasibility Project
Cascade is assisting the Cowlitz Indian Tribe with restoration feasibility studies in the lower Columbia River estuary. We have conducted feasibility studies for a variety of estuary areas, ranging from landscape-scale evaluations to identify restoration opportunities to site-specific restoration concept development.