Sedimentation Loop
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Sedimentation Loop

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Photographs of sedimentation problems and development in the Catawba River basin

Photographs of sedimentation problems and development in the Catawba River basin

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Sedimentation Loop Sedimentation Loop Presentation Transcript

  •  
    • Catawba River below Lake Hickory Dam.
    • Photo by J. Wes Bobbitt. Flight by Southwings.
  • McCrary Creek, Mooresville, Lake Norman. Photo by J. Wes Bobbitt.
  • Gaston County, South Fork of the Catawba. Photo by J. Wes Bobbitt
  • I-77, Lake Norman. Photo by J. Wes Bobbitt
  • Hwy. 49, Lake Wylie. Photo by J. Wes Bobbitt
    • Sun City, Indian Lands, SC
    Photo by J. Wes Bobbitt
    • Lowes Headquarters, Mooresville, NC
    • Lake Norman
    Photo by J. Wes Bobbitt
  • Buffer zone destruction
  •  
  •  
  • Landfill near Catawba in Alexander County. Photo by J. Wes Bobbitt.
  • Photo by J. Wes Bobbitt
  • Polluted Surface Waters Over the past 20 years, non-point source pollution sources have increased by over 55% in our region due to the change in land cover. Lake Wylie Dam
  • Water Quality Issues
    • Too many nutrients,
    • leading to
    • eutrophication and
    • too little dissolved oxygen
    • Acid rain
    • Mercury
    • Fecal coliform (improper sewage treatment, sewage spills, line leakage, and boat discharges)
    • Sedimentation
    • 1 inch rainfall on an acre of woods produces no runoff.
    • The same one inch of rainfall on one acre of asphalt will produce approximately 26,000 gallons of runoff.
  • Development (continued)
    • A one-acre parking lot produces 25,806 gallons of stormwater for every inch of rain compared with 1,630 gallons from a one-acre meadow.
    • Two thirds of the nation's polluted runoff comes from highways and roads.
    • Pollution from development
    Sediment Bacteria Metals Pesticides Fertilizers Petroleum Non-Point Source Pollutants
  • Regional Land Cover Change 1984 to 2003 Provided by American Forests 1984
  • Volume + Velocity Change in Natural Stream Flow =
  • 14 feet
  • Polluted, Sediment Filled Streams and Lakes
  • More People = More Pollution Uses Lost
  • The Charlotte Observer-Layne Bailey
  •  
  •  
  • Photo by J. Wes Bobbitt
  • Who must obtain the permit?
    • Easy:
    • The “operator.”
  • Who is the “operator?”
    • Not so easy.
  • Operator:
    • (1) operational control over the site specifications
    • (2) day-to-day operational control of those activities at the site necessary to ensure compliance.
  •  
  • Normandy Rd., Mooresville, Lake Norman
  • Normandy Rd., Mooresville, Lake Norman
  • Normandy Rd., Mooresville, Lake Norman
  • Norman Point Subdivision, Denver, Lake Norman
  • Norman Point Subdivision, Denver, Lake Norman
  •  
  •