Sedimentation Loop

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Transcript of Sedimentation Loop

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Catawba River below Lake Hickory Dam.

Photo by J. Wes Bobbitt. Flight by Southwings.

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McCrary Creek, Mooresville, Lake Norman. Photo by J. Wes Bobbitt.

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Gaston County, South Fork of the Catawba. Photo by J. Wes Bobbitt

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I-77, Lake Norman. Photo by J. Wes Bobbitt

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Hwy. 49, Lake Wylie. Photo by J. Wes Bobbitt

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Sun City, Indian Lands, SC

Photo by J. Wes Bobbitt

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Lowes Headquarters, Mooresville, NC

Lake Norman

Photo by J. Wes Bobbitt

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Buffer zone destruction

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Landfill near Catawba in Alexander County. Photo by J. Wes Bobbitt.

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Photo by J. Wes Bobbitt

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Polluted Surface WatersOver the past 20 years, non-point source pollution sources have increased 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.by over 55% in our region due to the change in land cover.

Lake Wylie Dam

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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

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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.

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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.

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Sediment

Bacteria

Metals

Pesticides

Fertilizers

Petroleum

Non-Point Source Pollutants

Pollution from development

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Regional Land Cover Change1984 to 2003

Provided by American Forests

1984

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Volume + Velocity Change in Natural Stream Flow

=

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14 feet

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Polluted, Sediment Filled Streams and Lakes

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More People = More Pollution

Uses Lost

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The Charlotte Observer-Layne Bailey

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Photo by J. Wes Bobbitt

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Who must obtain the permit? Easy:

The “operator.”

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Who is the “operator?” Not so easy.

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Operator:(1) operational control over the site specifications

(2) day-to-day operational control of those activities at the site necessary to ensure compliance.

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Normandy Rd., Mooresville, Lake Norman

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Normandy Rd., Mooresville, Lake Norman

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Normandy Rd., Mooresville, Lake Norman

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Norman Point Subdivision, Denver, Lake Norman

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Norman Point Subdivision, Denver, Lake Norman

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