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Examples of Streambank Protection/Rehabilitation

Action taken to suppress additional streambank erosion was installation of:

  • 60-ft live-siltation
  • 40-ft spruce tree revetment
  • 6 ft by 12 ft long elevated light-penetrating (ELP) gratewalk over rehabilitated riverbank and a 4 ft wide by 16 ft long ELP access ramp to the gratewalk over the riverbank

To rehabilitate streambanks removed 30 ft of old, surplused military coffins and wooden platform and installed:

  • 30-ft brush layer on 3 individual tiers
  • 70-ft spruce tree revetment
  • ELP gratewalk over rehabilitated riverbank and stairway to riverbed

Removed 84 ft by 6 ft revetment that was constructed of gravel fill and concrete and surrounded by riprap and old automobile tires. Structure was deteriorating and provided no fish habitat or cover due to its vertical face and higher than natural water velocities. Installed:

  • 20-ft brush layering
  • 60-ft coir logs with dormant willow plantings
  • 45-ft spruce tree revetment
  • Top of bank seeded with Alaskan grass seed mix
  • 8 ft wide by 32 ft long ELP gratewalk, 4 ft wide by 12 ft long floating dock were installed to prevent future access damage to the restored bank

The Alaska Department of Fish and Game (ADF&G) and the US Fish and Wildlife Service (USFWS) have developed a cooperative Cost-Share program to help riverside property owners protect riverbanks and fish habitat on Kenai Peninsula rivers. Applicants whose projects are accepted can receive reimbursement for up to 50% of the cost of their project. For more information, contact: Dean Hughes, ADF&G, Habitat Biologist (907) 267-2207 or Brie Darr, USFWS, Fisheries Biologist (907) 260-0125.

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