Eagle Creek Confluence Restoration Project

Salmonid Habitat Restoration and Acquisition

Project ID	OWEB 220-8207-17286
Recovery Domains	Willamette River
Start Date	10/01/2019
End Date	02/14/2024
Year	2019
Status	Completed
Last Edited	05/03/2024

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Description

The Eagle Creek Confluence project increased available habitat by driving geomorphic processes along lower Eagle Creek, near its confluence with the mainstem Clackamas River. This project included the engineering design and installation of large wood structures, which were built to mimic the structure and function of old growth key pieces of large wood. The project was needed to ensure complex habitat forming features are maintained in this dynamic confluence habitat. The project also enhanced connectivity between the creek and several developing side channel which will allow for longer duration rearing by juvenile salmonids in a complex side channel as opposed to the main channel of the creek. The work involved installation of apex log jams combined with addition of smaller complex wood structures capable of supporting rearing juveniles throughout the year. Noxious weed treatments and planting were highly successful in establishing native vegetation in the project area.

PCSRF FFY 2017 funds will be expended on project costs incurred during the PCSRF FFY 2017 contract award period and PCSRF FFY 2019 and state funds will be used to complete the project.

Project Benefit

The Eagle Creek large wood enhancement project aims to increase available habitat by driving geomorphic processes along lower Eagle Creek, near its confluence with the mainstem Clackamas River. This project will include the engineering design and installation of large wood structures, which will be built to mimic the structure and function of old growth key pieces of large wood. A remnant side channel only activated at moderately high winter flows in Eagle Creek will be improved through installation of an apex log jam that combined with minor excavation and strategic wood placement will lead to longer frequency and duration of flows

The project is expected to benefit fall and spring Chinook Salmon (Oncorhynchus tshawytscha), Coho Salmon (O. kisutch), steelhead (O. mykiss), Cutthroat Trout (O. clarki), Bull Trout (Salvelinus confluentus), and Pacific Lamprey (Lampetra tridentata). Historically through this reach, large growth trees were persistent, capable of withstanding most regular flood flows, and promoted geomorphic changes such as the development of mid-channel bars and pool scour.

Accomplishments

Metric

Completed

Originally
Proposed

Instream Habitat

Stream Miles Treated

.50

Riparian Habitat

Stream Miles Treated

1.00

Acres Treated

2.0

Source

Funds

PCSRF

$315,176

State

$2,496

Other

$303,400

Report Total:

$621,072

Worksites

20220121

Worksite Identifier: 20220121
Start Date:
End Date:

Area Description

No Area Description data was found for this worksite.

Location Information

Basin:
Subbasin:
Watershed:
Subwatershed:

State: Oregon
Recovery Domain: Willamette River
Latitude: 45.35179178
Longitude: -122.38115746

ESU

Lower Columbia River Coho Salmon ESU
Lower Columbia River Steelhead DPS
Upper Willamette River Chinook Salmon ESU

Map

Photos

Metrics

C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)

. . C.0.a Habitat restoration and acquisition funding 621,071.76
. . C.0.b Length of stream treated/protected .50

. . C.0.c

Project identified in a Plan or Watershed Assessment

National Marine Fisheries Service Northwest Region, 2013-06-01, ESA Recovery Plan for Lower Columbia River Coho Salmon, Lower Columbia River Chinook Salmon, Columbia River Chum Salmon, and Lower Columbia River Steelhead; Oregon Department of Fish and Wildlife, 2010-08-01, Lower Columbia River Conservation and Recovery Plan for Oregon Populations of Salmon and Steelhead; Oregon Department of Fish and Wildlife, 2016-01-01, Oregon Conservation Strategy ;

. . C.0.d.1 Project Monitoring (LOV)
. . C.0.d.2 Monitoring Location (LOV)
. . C.4 Instream Habitat ProjectY (Y/N)
- . . . . C.4.a Instream Habitat Funding 558,964.58
- . . . . C.4.b Total length of instream habitat treated .50
- . . . . C.4.c.1 Channel reconfiguration and connectivityY (Y/N)
  - . . . . . . C.4.c.2 Type of change to channel configuration and connectivity (LOV)
  - . . . . . . C.4.c.3 Miles of stream treated for channel reconfiguration and connectivity .02
  - . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity .27
  - . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 0
- . . . . C.4.d.1 Channel structure placementY (Y/N)
  - . . . . . . C.4.d.2 Material used for channel structure (LOV)
  - . . . . . . C.4.d.3 Miles of stream treated through channel structure placement .50
  - . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 10
  - . . . . . . C.4.d.7 Number of structures placed in channel 16
- . . C.5 Riparian Habitat ProjectY (Y/N)
  - . . . . C.5.a Riparian Habitat Funding 43,475.03
  - . . . . C.5.b.1 Total riparian miles streambank treated 1.00
  - . . . . C.5.b.2 Total Riparian Acres Treated 2.0
  - . . . . C.5.c.1 Riparian plantingY (Y/N)
    - . . . . . . C.5.c.2
      Species of plants planted in riparian
      
      Douglas fir, western red cedar, red alder, cascara; Pacific ninebark, pacific willow, salmonberry, osoberry, snow berry
    - . . . . . . C.5.c.3 Acres planted in riparian 2.0
    - . . . . . . C.5.c.4 Miles of streambank treated with riparian planting 1.00
  - . . . . C.5.h.1 Riparian plant removal/controlY (Y/N)
    - . . . . . . C.5.h.2
      Species of plants treated/removed in riparian
      
      Himalayan blackberry, English Ivy, clematis, knotweed, scotch broom
    - . . . . . . C.5.h.3 Acres of riparian treated for plant removal/control 2.0
    - . . . . . . C.5.h.4 Miles of streambank treated for riparian plant removal/control 1.00
  - . . C.11 Site maintenance projectY (Y/N)
    - . . . . C.11.a Site maintenance funding 18,632.15
    - . . . . C.11.b.1 Stream or streambank maintainedY (Y/N)
      - . . . . . . C.11.b.2 Miles of streambank maintained 1.00