Compiled by Chuck Villarrubia LDNRCRD April 15, 1998

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Compiled by Chuck VillarrubiaLDNR/CRDApril 15,
1998
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Resource
Socioeconomic Issues
Management Goals
Manipulate Environment
Monitor Variables
Management Decisions
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Caernarvon Goals

• Enhancement of emergent marsh vegetation growth
• Reduction of marsh loss
• Increase significant commercial and recreational
  fisheries productivity
• Increase significant commercial and recreational
  wildlife productivity

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Plaquemines Parish Government
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Outfall Management

• Outfall management is also being planned in
  conjunction with this freshwater diversion.
  Freshwater outfall will be redirected to marsh
  areas of greatest need and spoil banks will be
  modified to allow more efficient movement of
  water into marsh areas and at lower discharge
  levels

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Louisiana Department of Wildlife and Fisheries
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USGS National Wetland Research Center Louisiana
Department of Natural Resources
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Data Summary (9 Sample Sites)of Land Gain in
Acres

• (405.99) Net Gain of Land / (2288.90) 1990 Land X
  100 17.74 Percent Land Gain
• 17.74 Percent Land Gain / 3 Years Caernarvon
  Active 5.9 Percent Land Gain per Year
• 406 Acres in 9 sampled areas

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Plaquemines Parish Government
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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Louisiana Department of Wildlife and Fisheries
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From Lane, R., J, Day, B. Thibodaux. 1997 Water
Quality Analysis of a Freshwater Diversion at
Caernarvon, LA
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Riverine Reintroduction Observations

• Ecosystem responding favorably to
  re-establishment of historical conditions
• Estuarine functions rehabilitated
• Niches re-established
• Increased mass and energy input result in greater
  output
• Increased terrestrial aquatic carbon fixation
  food and habitat