Mill Creek Restoration Project

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					Mill Branch Creek
Restoration Project
Annual Membership Meeting
March 23, 2010
Project 08-200 FY 2008
Our Partners
     Mill Branch Creek
                                         Highway
 Mill Branch is located                    62
  near the Community        Berryville
                           Community
  Center in the heart of     Center
  Berryville
 Mill Branch flows into
                                           Mill Branch
  Osage Creek, Osage                          Creek
  Creek flows into Kings
  River
        Mill Branch Creek

                               Mill Branch in 2007




Aggressive vegetation
management, such as
herbicide use, had destroyed
the riparian zone and led to
extensive erosion.
        Mill Branch Creek
KRWP has worked with the City to develop better management
practices. Vegetation has returned but bank erosion and
destabilization are still occurring.
        An Important Urban Stream

   Mill Branch watershed is 0.6 square miles and drains
    about 40% of the urban area of Berryville

   Through landowner interviews and numerous site
    visits, it is estimated that this reach has contributed
    approximately 7,000 cu. ft. of sediment in 2008.

   At its present rate of erosion, the stream is estimated
    to erode into the City’s skateboard park, located along
    the stream’s banks, in less than 3 years.
          An Important Urban Stream

   In 2008 reach 037 of
    the Kings River was
    placed on the 303 (d)
    list of Impaired
    Waterways for Total
    Dissolved Solids.
   In the past multiple
    sections of Osage
    Creek and Kings River
    have been placed on
    this list for excess
    nutrients and sediment.
       Restoration

   Project will span 1,105 ft of stream bank
   12 rock structures to be built creating a step-
    pool system to stabilize the bank and reduce
    erosion
   266 tons of sandstone will be used
   453 cubic yards of dirt will be moved
   Grasses and trees will be planted to re-
    establish the riparian zone
           Restoration
                                      Gully Park Restoration: Watershed
                                      Conservation Resources Center in
                                      Fayetteville.




   The bank has been re-sloped
   The waterline, or toe, has been
    secured with rock
   Rock extends across the
    stream to create small ‘dams’
    and pools
           Restoration

Step pool design:

   Rock structures will slow down
    the flow of water
   Reduce erosion of the stream
    bank
   Allow sediment to settle instead
    of being carried downstream
   Help maintain more consistent
    water levels to promote aquatic
    habitats.
    Goals
   Stabilize the stream environment and
    reduce erosion and sediment flows.

   Install trees and plants to create a
    greenspace for citizens and visitors

   Bring attention to the problem of stream
    bank erosion and the resources available
    to manage it.
           In Our Watershed
   In 2007 the KRWP surveyed 85
    miles of the Kings River and Osage
    Creek to identify and map stream
    bank erosion.
   Using the bank erosion hazard
    index (BEHI) and NPS protocols
    the surveyors found 31 extremely
    eroded banks, 106 very highly
    eroded banks, and 63 highly
    eroded banks.
   Of the 85 miles of the Kings River
    and Osage surveyed, 17.6 miles
    were found to be eroded. This
    map shows the area surveyed.
          Resources
                                    For more information
                                    on this and many
                                    issues in our
                                    watershed, pick up
                                    The Landowner’s
                                    Guide to Stream Side
                                    Living


Online at: http://www.kingsriverwatershed.org/landowners_handbook.html
Questions?




Thank You!

				
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