4.6 Shorelines and Streambanks

Goal 6 - Shorelines and Streambanks

Preserve the natural appearance of shoreline areas and minimize degradation of surface water quality which can result from dredging operations.

Discussion

Eroding shorelines and streambanks contribute to the degradation of water quality.  Native vegetation can effectively stabilize these areas, filter runoff for sediment and other pollutants, and provide habitat.  Restoration of streambanks on Painter Creek and other streams in the subwatershed and wetlands within the subwatershed is a key strategy for meeting this plan’s goals.  The Upper Watershed Stream Assessment and the Painter Creek Feasibility Study identified locations where restoration and the creation of buffer zones may be desirable and feasible.

The key areas identified in this plan for conservation activities include the conservation of buffer zones adjacent to streams and channels.  In some cases these buffer zones are riparian or flow-through wetlands, and those wetlands have been identified as key conservation areas.  Where streams and channels flow through upland areas, conservation of native vegetation within these zones would provide habitat for both aquatic and terrestrial wildlife; help increase or maintain infiltration rates; decrease or maintain runoff rates and pollutant conveyance to water resources; and help minimize erosion.   Restoration of lakeshore would have the same benefits.  Sustaining or improving water quality and ecological integrity is necessary to meet District goals as well as to meet state and federal nondegradation, water quality and biological integrity requirements and to prevent the need for future TMDLs. 

Desired Outcomes:  Stable streambanks and shorelines to supplement other goals.

Metrics:

  • Stream Visual Assessment Protocol (SVAP) in Painter Creek
  • Linear feet of stabilized eroded streambank
  • Linear feet of streambank protected in Key Conservation areas
  • Linear feet and width of riparian areas protected in Key Conservation Areas

Goal 6.1 - Painter Creek

Promote streambank restoration and buffer creation as methods to help meet pollutant loading reduction and ecological integrity goals.

Actions

  1. Restore degraded streambanks on Painter Creek to achieve a Stream Visual Assessment Protocol mean score above 5.0 and on other streams to stabilize streambanks; reduce pollutant loading, erosion and sediment transport; and increase habitat.   Figure 20 illustrates areas of high priority for improvement because of bank failure as identified in the Upper Watershed Stream Assessment.
    1. Periodically update the Painter Creek stream assessment to assess current stream condition and ecological integrity.
  2. Stabilize the eroding stream in PC-13 as identified in the Feasibility Study.
  3. Work cooperatively with LGUs and adjacent property owners to prevent erosion and sediment transport and stabilize Painter Creek streambanks as necessary.
  4. Promote native vegetation over structural stabilization in District policies, regulations, and programs.
    1. Provide education and training opportunities, technical and planning assistance, and demonstration project funding to LGUs to assist them in restoring streambanks and buffers on public property such as parks and open spaces.
    2. Develop and distribute written material to riparian property owners explaining the benefits of streambank restoration and buffer creation to the reduction of pollutant loads and creation of shoreline habitat and providing design, plant selection, installation, and maintenance advice.
    3. Develop a small grant program to provide financial assistance to property owners desiring to restore their shoreline or plant a buffer.