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A Position Paper by Restore or Retreat, Inc.:
» Governor-Elect Jindal’s New Administration: A Fresh Start for
Protecting & Restoring Louisiana’s Coast.

January 2008

Phase 1:
Reconnaissance-level Evaluation of the
Third Delta Conveyance Channel Project Final Report / June 2004
» Download PDF here [ 88.5 Mb ]

Phase 2:
Reconnaissance-level Evaluation of the
Third Delta Conveyance Channel Project
Final Report / March 2007
» Download PDF [ 50.1 Mb ]

Related Links
» State Master Plan
» Morganza-to-the-Gulf
» USACE LaCPR Plan






» Coastal wetlands flooding in southeast Louisiana, pre- and post-Katrina.

» Chandeleur Barrier Island Chain decimated by Hurricane Katrina.

» Proposed delta-building locations of Third Delta Conveyance Channel.

» Hurrican Lili's projected path, 10-02-02

» Third Delta Conveyance Channel General Pathway

» Washing Away: Historic and Projected Erosion Along Louisiana's Coast





Two sustainable sub-delta ecosystems

Dependable potable water supply

Transportation and Economic Development Corridor

By-pass historic district

Introduction of river water/sediment nutrients to wetlands

Reduction of Mississippi River Flood Elevations

Local Flood Control
Reduction of Mississippi River Maintenance Dredging

Reduction of Anoxic Conditions in Gulf of Mexico







Davis Pond Freshwater Diversion
Summary: Bound by overtopping of the West Guide Levee and other initial design and engineering flaws, Davis Pond, the world's largest diversion project, has remained largely non-operational since its dedication in 2002.

Current Status: Most recently, sheet pile was driven into the WGL to improve its strength and restrict overtopping, completed in Summer 2007. The Corps is currently on track with a contract to lower the lake openings from -1.5 to -3.0 feet, enlarge the two eastern and one western channel in the ponding area, and repair the seepage in the WGS sheet pile. It is expected a contract will be signed around the middle or end of January 08

Real Time Project Stats:
http://waterdata.usgs.gov/la/nwis/uv

Facts:
  • Price tag: $120 million (federal 75% / state 25%)
  • Maximum Diversion Capacity: 10,650 cubic feet per second (cfs)
  • Expectations: To preserve 33,000 acres of marsh and benefit 777,000 acres of marshes and bays, the latter being equal to the land area of Rhode Island
  • Consists of four iron-gated 14' x 14' box culverts built into the Mississippi River levee, and an inflow channel 535' long x 85' wide will direct river water into the structure, while an outflow channel more than 11,000' long x 120' wide will extend behind the structure into the ponding area.
  • The total project area comprises 10,084 acres, including the 9,200-acre ponding area.
  • The 19-member advisory committee has representatives from: DNR; the Corps; U.S. Environmental Protection Agency; National Marine Fisheries Service; U.S. Fish and Wildlife Service; U.S. Natural Resources Conservation Service; Louisiana Department of Environmental Quality; Louisiana Department of Wildlife and Fisheries; Louisiana Department of Health and Hospitals; Barataria-Terrebonne National Estuary Program; St. Charles, Jefferson, Lafourche and Plaquemines parishes; landowners; shrimpers (2); oyster fishermen and recreational fishermen.
  • Authorized in the Flood Control Act of 1965 and modified most recently by the Water Resources Development Act of 1996
  • Construction began in January 1997
  • Dedicated in 2002

Project Photos




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