Projects
Our projects are listed below. You can also filter these projects by category:
Willamette River Bank Erosion and Failure Assessment
Ecological Engineering, LLC was contracted by the Oregon Recreational Boaters United to conduct an examination of river bank erosion and bank failure within the Willamette River Newberg Pool. Recreational boating on the Willamette River is regulated by the Oregon...
Middle Nemah River Restoration Design
The Middle Nemah River is a major tributary to the Willapa Bay Estuary in southwest Washington. It is vital habitat for anadromous Pacific salmon and steelhead with opportunities for restoration actions with substantial benefit for overall river health. Ecological...
Stream Stabilization and Restoration
Oregon Metro acquired and manages the 1260 acre Chehalem Ridge Natural Area in Washington County, Oregon for its natural resource and recreational values. Metro is responsible for restoring and maintaining the natural resources and wildlife habitat and has relied on...
Dairy Creek Wetland Mitigation Bank
Ecological Engineering provided all engineering analysis and design to Green Banks, LLC for the Dairy Creek Wetland Mitigation Bank in Washington County, Oregon. The Dairy Creek Wetland Mitigation Bank will enhance and restore 134 acres of historic floodplain...
Silvies River Flood Management
Ecological Engineering served as a subconsultant to Kleinschmidt Associates on the Silvies River Drainage Flood Management and Mitigation project for Harney County, Oregon. The overall scope of work provided engineering services including floodplain modeling, flood...
Chehalis River Flood Retention Mitigation
The Chehalis River Basin Flood Control District was evaluating the potential of constructing a flood retention facility and temporary reservoir near Pe Ell, Washington to reduce flooding impacts from the Willapa Hills in southwest Washington. The flood retention...
Johnson Creek Beaver Dam Analog Design
Mr. Gorman provided the design of a bridge removal, stream and side channel restoration, and beaver dam analogs, and conducted hydraulic modeling for a reach of Johnson Creek near Portland, Oregon for Oregon Metro. The beaver dam analogs were designed to reconnect the...
Side Channel Salmonid Habitat Restoration
Side channel salmonid habitat is critical to the rearing life cycle stage of native fish. Mr. Gorman worked with multiple stakeholders including Oregon Department of Fish and Wildlife, Clackamas River Basin Council, Clackamas County, Clackamas County Soil and Water...
Johnson and Brigman Creeks Confluence – Construction Completed
Ecological Engineering recently completed construction oversight for Metro’s Johnson and Brigman Creeks Stream Stabilization project near Gresham, Oregon. The project was designed and provided construction oversight by David Gorman under Ecological Engineering’s...
Tryon Creek Fish Passage Design Finalized
In late summer of 2018 Ecological Engineering completed the fish passage design for the reach of Tryon Creek below Boones Ferry Road and within the Tryon Creek Natural Area for the City of Portland’s Bureau of Environmental Services. Existing conditions included an...
September 9, 2017 – Metro On-Call for Water Resources Engineering
Oregon Metro selects Ecological Engineering for a three year on-call contract to provide Water Resource Engineering services. Ecological Engineering will be providing Metro with services to include surface water hydrology and hydraulic modeling, floodplain management,...
August 24, 2017 – Brigman Creek Dam and Bridge Removals and Large Wood Structure Placement
Ecological Engineering completes the construction oversight of the removal of three dams and one bridge on Brigman Creek in east Multnomah County, Oregon and the placement of large wood structures instream to restore fish passage and natural fluvial geomorphology....
July 27, 2017 – Lithia Park Master Plan Contract Awarded
Ecological Engineering and the MIG consulting team are notified they were awarded a contract by the City of Ashland for the preparation of the Lithia Park Master Plan. MIG, the prime consultant for the project, plan, design and sustain environments that support human...
Walla Walla, Washington, Stream Restoration – Umatilla County, Oregon
Mr. Gorman served as the engineering subconsultant to produce design plans and specifications for the removal of a flood control dike and restoration of the streambank and floodplain for 800 feet of stream as part of the restoration of Mill Creek in Umatilla County,...
Portland General Electric, Stream Restoration – Government Camp, Oregon
Mr. Gorman provided all hydrologic and hydraulic analysis and engineering design services to create a natural looking, stable, functional, subalpine stream for the Portland General Electric Summit Site stream restoration for a decommissioned...
Oregon Trout, Stream and Wetland Restoration – Chiloquin, Oregon
Mr. Gorman provided engineering oversight for the design of the Wood River Channel and Wetland Restoration project to restore the lower 0.75-mile reach of the Wood River and associated wetlands in Klamath County. Project objectives included restoration of fluvial...
Wallowa Resources, River Restoration – Lostine, Oregon
Mr. Gorman designed 2300 feet of new river channel for a previously straightened reach of the Wallowa River near Lostine, Oregon to restore the river to conditions similar to its historical alignment and function. The design included detailed hydraulic design of...
Columbia Land Trust, Estuarine Wetland and Anadramous Fish Habitat Restoration – Clatsop County, Oregon
Mr. Gorman provided engineering design for the restoration of tidal wetlands on the Wallooskee River that had been disconnected from the river through the placement of agricultural dikes. Design components included selection of dike breach locations to minimize the...
Columbia River Estuary Study Task Force, Estuarine Wetland and Anadramous Fish Habitat Restoration – Clatsop County, Oregon
Mr. Gorman worked closely with a private property owner and CREST to provide the engineering design of dike breaches and site grading for estuarine wetland habitat restoration along the Skipanon River. The dike breach and grading design he prepared restored tidal...
Columbia River Estuary Study Task Force, Estuarine Wetland and Anadramous Fish Habitat Restoration – Clatsop County, Oregon
Mr. Gorman provided project management, site analysis, engineering design, and wetland permitting services for the removal of a dike and the filling of drainage ditches to restore 15 acres of estuarine wetlands along the Lewis and Clark River in Clatsop County,...
International Paper, Fish Habitat Mitigation Design – Longview, Washington
Mr. Gorman conducted hydraulic analysis of the confluence of the Cowlitz and Columbia Rivers to guide the siting and design of downstream migrant juvenile salmonid habitat to mitigate a proposed wharf expansion and to prevent fish entrapment.
Chevron, Dredging Engineering Design Lead, Base Oil Project Marine Facilities Expansion – Pascagoula, Mississippi
Mr. Gorman prepared specifications to dredge sandy surface material as part of the marine terminal expansion and to allow for its transport and disposal at the nearby Greenwood Island beneficial use site. Specifications included detailed dredging and handling...
BNSF Railroad, Wetland Creation – Skykomish, Washington
Mr. Gorman conducted all hydrologic and hydraulic modeling and grading design to restore wetlands and create off channel fish habitat within the excavation prism of a large scale remediation of petroleum contaminated soil. He modeled peak flows from various return...
Lower Columbia Estuary Partnership, Wapato Access Feasibility Study – Multnomah County, Oregon
The Wapato Access Feasibility study was designed and managed by Mr. Gorman to determine the general feasibility of ecologically restoring a 156-acre site along Multnomah Channel to provide rearing habitat for juvenile salmonids. The study included a vegetation survey...
City of Portland, Oregon, Stream and Wetland Restoration – Portland, Oregon
Mr. Gorman was responsible for overall project management, hydrologic and hydraulic analysis, hydraulic design of stream channel and flood storage, design of water quality facilities, grading design for wetland enhancement, preparation of design memorandums, and...
Dan and Kathy Ridgeway, Stream and Wetland Restoration – Sprague River, Oregon
Mr. Gorman completed the wetland and riparian enhancement design for 2.5 miles of Sprague River channel and 130 acres of adjacent river floodplain in Klamath County, Oregon. He provided grading design to enhance habitat for migratory and nesting waterfowl; fish,...
Johnson-Brigman Confluence Stream Restoration – Multnomah County, Oregon
Metro acquired a residential property at the confluence of Johnson and Brigman Creeks with the intent to restore the ecological values of the site. Mr. Gorman served as the lead engineer and project manager, providing the site assessment, wetland delineation,...
Johnson Creek Habitat Assessment and Stream Stabilization – Multnomah County, Oregon
Mr. Gorman provided professional assistance to Metro in the selection, hydraulic assessment and engineering design of candidate stream stabilization sites throughout 2.3 stream miles of the Upper Johnson Creek Natural Area. Floods resulting from storm events have...
Rock Creek Confluence Stream Habitat Restoration – Clackamas County, Oregon
Mr. Gorman provided the Clackamas River Basin Council and Clackamas County’s Water Environment Services hydraulic engineering, permitting, and final design services to restore approximately 2,200 feet of Rock Creek from its confluence with the Clackamas River,...
Fisher’s Bend Side Channel Salmonid Habitat Assessment and Design – Clackamas County, Oregon
Mr. Gorman worked with multiple stakeholders including Oregon Department of Fish and Wildlife, Clackamas River Basin Council, Clackamas County, Clackamas County Soil and Water Conservation District, US Fish and Wildlife Service and private property owners in assessing...
US Army Corps of Engineers, Far East District, Soldier Field Wetland Enhancement – Pyongtaek, Korea
Mr. Gorman was hired by the US Army Corps of Engineers to work closely with them at Camp Humphreys US Army base in South Korea to restore a badly degraded wetland to provide wildlife habit for threatened indigenous species and to serve as one of very few natural areas...
Fazio Brothers Sand and Gravel, Wetland Mitigation and Salmonid Conservation Bank – Clark County, Washington
Mr. Gorman has recently worked with NOAA Fisheries, US Fish and Wildlife Service, the US Army Corps of Engineers and the Washington Department of Ecology to design and permit the Round Lake Wetland Mitigation and Salmonid Conservation Bank on the Lower Columbia...
Tryon Creek Boones Ferry Road Culvert Replacement – Portland, Oregon
The Oregon Department of Fish and Wildlife (ODFW) listed Tryon Creek as its highest priority for fish passage restoration in Western Oregon. The culvert on Tryon Creek at Boones Ferry Road is a nearly complete fish passage barrier that the City of Portland determined...
Columbia River Estuary Study Task Force, Estuarine Wetland and Anadramous Fish Habitat Restoration – Chinook, Washington
Mr. Gorman provided the engineering and project management for the preliminary design, permitting, and cost estimation for the replacement of a culvert under US Highway 101 in the Columbia River estuary to restore fish passage and estuarine wetlands. The area to be...
Central Pre-Mix – Yakima, Washington
Proposed gravel mining activity in the Yakima River floodplain by the client will impact significant freshwater wetland resources. To assist the client in mitigation of proposed impacts, Mr. Gorman conducted hydrologic and hydraulic analysis of conditions for an...
Tryon Creek Trunk Sewer Upgrade and Fish Passage Design – Lake Oswego, Oregon
Mr. Gorman provided hydraulic modeling and design support to the Portland Bureau of Environmental Services for improvement of fish passage, streambank stabilization, and in-channel habitat quality enhancements for the Tryon Creek Trunk Sewer Upgrade project in Lake...
City of West Vancouver, Hydrologic Analysis – West Vancouver, British Columbia, Canada
Mr. Gorman conducted an evaluation of the potential hydrologic impacts of the proposed Sea-To-Sky Highway Improvement Project in the Horseshoe Bay to Sunset Beach section through West Vancouver. The focus of the analysis was to assess the magnitude and type of...
Oregon Overseas Timber – Bandon, Oregon
Flooding of a property downstream of the client's site resulted in legal action against the company. Mr. Gorman conducted all of the hydrologic and hydraulic analysis of the storm drainage system for the client to determine the causes of the flooding, recommend system...
Columbia Land Trust, Expert Witness Engineering for Estuarine Wetland Restoration – Wahkiakum County, Washington
Mr. Gorman provided expert witness engineering related to flooding issues associated with dike breaching and Lower Columbia River estuarine wetland restoration along the Grays River in Wahkiakum County, Washington. He provided engineering review of project analysis...
Phelps Creek Relocation and Restoration for PACLAND – Hood River County, Oregon
Phelps Creek is a Hood River County stream that was relocated and channelized in the past. The client proposed that it be moved back to its original location to facilitate site development, but there was significant public opposition to the project. Mr. Gorman...
Various Land Use and Legal Clients, Oregon, Washington, and British Columbia, Canada
David Gorman has participated as the prime technical expert in many legal and land use cases involving surface water issues. Cases involved the analysis of drainage, flooding, erosion, and alterations of wetlands and streams. Analysis generally required the use of...
City of Tangent, Oregon Stormwater Master Plan – Tangent, Oregon
The City of Tangent is located in the heart of the grass seed capital of the world in the central Willamette River valley of Oregon. Mr. Gorman was responsible for conducting all hydrologic and hydraulic analysis of the 1900 acre drainage system to prepare an update...
Clackamas Community College, Stormwater Management and Habitat Restoration – Oregon City, Oregon
Mr. Gorman provided Clackamas Community College with engineering and site design services for a total redesign of the existing Environmental Learning Center (ELC) portion of the campus. He redesigned the 6-acre site to maximize the educational, recreational,...
City of Camas, Washington, Stormwater Master Plan – Camas, Washington.
Mr. Gorman Managed a stormwater master plan analysis of the Fisher Creek Basin in Camas, Washington. The project included hydrologic and hydraulic modeling of the Fisher Basin, using the EPA Storm Water Management Model (SWMM) software, identifying areas of potential...
Clean Water Services Surface Water Utility Establishment – Washington County, Oregon
Clean Water Services (CWS) is a public utility with responsibility to protect water resources in the Tualatin River Watershed in Washington County, Oregon. CWS serves nearly 500,000 customers, providing innovative wastewater and stormwater services, flood management...
GE, Housatonic River Remediation – Pittsfield, Massachusetts
Mr. Gorman provided analysis of stream bank stabilization alternatives for approximately 10 miles of the Housatonic River contaminated with PCBs. The primary objective of the analysis was to maximize the use of bioengineering methods to stabilize eroding streambanks...
Confidential Client, Bank Stabilization and NRDA Mitigation – Portland, Oregon
Mr. Gorman provided bank stabilization design and permitting for more than one quarter mile of PCB contaminated Willamette Riverbank material as an early action project for a Potentially Responsible Party (PRP) in the Portland Harbor Superfund site. He also provided...
Tryon Creek Sanitary Sewer Trunk Upgrade Stream Bank Stabilization – Lake Oswego, Oregon
David Gorman served as the design engineer for streambank stabilization on a project team for the City of Portland to provide protection for critical infrastructure associated with the Tryon Creek Wastewater Treatment Plant. Just upstream of the treatment plant...
Northern Star Natural Gas – Svenson, Oregon
Estuarine Wetland and Anadramous Fish Habitat Mitigation Mr. Gorman designed 65 acres of estuarine wetland and anadromous fish rearing habitat in the Columbia River Estuary to mitigate for estuarine and non-tidal fresh water wetlands proposed to be impacted by...
GreenBanks – Hillsboro, Oregon
Mr. Gorman provided all engineering analysis and design for the Tualatin Valley Habitat Bank in Washington County, Oregon. He conducted hydrologic and hydraulic modeling for the dynamic portions of the wetland hydrology, designed all grading for wetland hydrology...