P1252428283hxioF

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Sturgeon Lake Restoration, Phase 3
West Multnomah County Soil Water Conservation
District
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Environmental Problem

• Fish and wildlife declines in the Columbia River
  Basin
• Salmonid decline is attributed to resource use
  affecting ocean, mainstem, and upland habitat
• Mainstem issues involve dams, water
  quality/quantity and habitat loss

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Sturgeon Lake

• Critical Habitat
• 3,200 acres of wetland off-channel habitat
• Sauvie Island - Lower Columbia River
• Currently being reduced by siltation
• Project aims to restore natural ecosystem
  function to Sturgeon Lake

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Sturgeon Lake
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Project Value

• Rich diversity of
• fish wildlife habitat
• Waterfowl
• Bald Eagles
• Peregrine Falcons
• Sandhill Cranes
• Juvenile Salmonids

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Project Value

• Juvenile Salmonid Habitat
• Off-channel habitat supports outmigrating feeding
  and protection of juveniles
• Smith and Bybee Lakes
• 2 million juveniles
• SL is 3x size

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General Site Background

• Natural flows have been restricted by Federal
  levees
• Salmonid migration restricted to entrance at far
  downstream end, via Gilbert River

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Sturgeon Lake
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Project History

• Federal and state permits were obtained
  authorizing two phases
• Dairy Creek rechannelized to shorten length
  logs removed
• Mouth Erosion control, sand plug removed, log
  boom

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Great Flood of 1996

• Successful Restoration
• Sand filled in at mouth
• no jetty
• 1996 Dairy Creek destruction
• woody debris silt
• culvert log boom
• 2001 Sturgeon Lake siltation
• alders replaced wetland
• habitat reduced by 1/3

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Cooperative Effort

• Dairy Creek Issues addressed in Phase 3
• Sturgeon Lake Ecosystem Restoration
• ODFW
• WMCSWCD
• Ducks Unlimited
• USACE
• DEQ
• Numerous Private Citizens
• Hydrologists
• Dr. Stephanie Moret (MWH)
• Dr. Peter Klingeman (OSU)

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Proposed Action

• Remove large sand shoal
• Re-analysis and construction of 200-ft long rock
  jetty
• Reconstruct log debris deflection boom
• Repair or replace culverts on Reeder Road
• Remove logs and fine sediments

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Effects of Proposed Action

• Significant opportunities for backwater feeding
  and refugia for salmon
• Support diversity and abundance of waterfowl
• Reduce rate of siltation

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Relationship to Other Projects

• Lower Columbia River Ecoregion Restoration
  Project
• Phase II ID wetlands
• Burlington Bottoms Restoration Projects
• Willamette River Mitigation Program (WRMP)

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Relationship to Other Projects
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Objectives and Tasks

• Peer endorsement and approval from WMSWCD to
  renew USACE support for 1135 funding
• Want 25 budget from CBFWA
• 75 of funding from USACE
• responsibility for rock jetty

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Facilities and Equipment

• Use of ODFW Offices on Sauvie Island for
  associated studies
• Computer access as needed
• Data storage and access as needed

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THANK YOU
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