Oyster Restoration in the Lynnhaven River. Watershed A watershed is an area of land that drains to a...

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Transcript of Oyster Restoration in the Lynnhaven River. Watershed A watershed is an area of land that drains to a...

  • Oyster Restoration in the Lynnhaven River

  • WatershedA watershed is an area of land that drains to a common point.

    It is the area land that catches the rain and snow and drains or seeps into a marsh, stream, river, lake or groundwater.

  • Point and Non-Point SourcesPoint Source Pollution:Pollution originating from a discrete source (a pipe, factory, farm, ditch, etc.)

    Non-Point Source Pollution:Pollution discharged over a wide land area, not from one specific location, occurs when rainwater or irrigation drains off of plowed fields, city streets and parking lots, or suburban backyards. More than 50% of all water pollution in the US.

  • Common Classes of PollutantsSediments

    Nutrients

    Toxins (heavy metals, petroleum products, pesticides, road salt, etc.)

    Bacteria

  • Green Filter or Gray Funnel

  • Lynnhaven River Watershed

  • The Lynnhaven WatershedCovers 21% of the citys land area--- 64 square miles

    Is home to 47% of the citys population---200,000 people

    Includes Broad Bay, Linkhorn Bay, Crystal Lake, and the Eastern and Western Branches

  • Largely Residential

  • Virginia Beach Population Growth1905 -- 11,0001940 -- 19,0001950 42,0001960 -- 84,0001970 172,0001980 262,0001990 393,0002000 425,0002006 445,000

  • Virginia Department of HealthAreas Closed to Oyster HarvestDecember 11, 2003January 21, 2005

  • Condition of the LynnhavenWater Quality Problems:Bacteria (mainly fecal coliform)Excess NutrientsSedimentToxins

    Habitat Loss:Oyster ReefsWetland & Buffer HabitatsUnderwater Grasses

  • Fecal Coliform Origins in Lynnhaven River (according to DEQs TMDL study 2003)

    Chart1

    28

    25

    30

    17

    Sheet1

    bird28

    human25

    pets/livestock30

    wildlife17

    Sheet2

    Sheet3

  • A single overboard discharge of human waste can be detected in up to a one square mile area of shallow enclosed water. Contaminants known from human waste include hepatitis, streptococci, fecal coliform and other bacteria.

    Florida Department of Environmental ProtectionWater Quality Fact

  • What can you do?

  • Six Areas of FocusPreservation and Restoration of WetlandsTeaching Water-Friendly Landscaping Restoration of Oyster ReefsWorking with the City to Improve Storm Water and Remove SepticsReduce Fecal Coliform Bacteria from Animal WastePromote Clean Boating PracticesEstablish Lynnhaven as a No Discharge Zone

  • Reduce Sediment InputsAppropriate sediment controls on construction projects

    Maintain vegetation

    Preserve or restore natural shorelines

  • Reduce Toxin InputsDispose of household toxins appropriately

    Use less toxic chemicals

    Dont dump into sewers

  • What else can you do?What can you do to reduce Nutrient and Fecal Coliform Input?

  • Reduce Pet Waste:Scoop the Poop

  • Dont feed the ducks.or raccoons, or geese, or

  • Make Clean Boating a HabitPUMP, DONT DUMP Raw Sewage isnt nice, treated or untreated. Pump out your boat appropriately and dump portable toilets where they belong.

    STOWE IT, DONT THROW IT Trash isnt good for the wateryou brought it here, take it back with you!

    FILL, DONT SPILL Only fill your boat to about 90% ...stop the pump before the tank is full! Fuel spills are illegal.

    USE THE RIGHT STUFF Only use cleaners and fluids that are certified safe for marine use!!!

  • Lynnhaven River 2007 Clean Boating Initiatives:LR 2007 supports No Discharge Zone legislation.

    LR 2007 helps marinas become a Certified Green Marina

    Teach Clean Boating Practices

  • Practice Water Friendly Landscaping

    Install a Backyard BufferUse native plants in your landscapingTest your soil and fertilize appropriatelyBuild a Rain GardenPlant Trees

  • Install a Backyard Buffer

  • Grow Oysters

  • Community Oyster Contributions

    Oysters by Year

    4000050000

    3700050000

    500090000

    3500074000

    65000134000

    5000075000

    30000118000

    40000144000

    Citizen Raised Oysters

    Student Raised Oysters

    Oysters Transplanted

    Sheet1

    Lynnhaven River Oyster Transplanting

    YEARCitizen's OystersStudent's OystersCBF Oyster FarmTOTAL

    19984000050000090000

    19993700050000087000

    2000500090000095000

    200135000740000109000

    20026500013400022000221000

    20035000075000425000550000

    200430000118000148000

    200540000144000497000681000

    302000735000

    Sheet2

    Sheet3