Marsh Assessment - Species Cover vs Elevation

Marsh Reference Site Assessment

Atchafalaya River / Northern Terrebonne Marshes restoration

This 500,000-acre water resources and marsh restoration project is designed to reduce ecological, economic and cultural losses in the Northern Terrebonne Marshes by increasing conveyance of river water from the Atchafalaya to the target marsh areas and modifying existing controls affecting marsh hydrology. The Northern Terrebonne Marshes have experienced significant wetland losses due to human impacts, subsidence, erosion and habitat conversion. Specific project objectives are:

  • Increase sediment and nutrient inputs into estuarine wetlands
  • Prevent land loss and habitat conversion
  • Protect socioeconomic resources
  • Restore marsh hydrology
  • Reduce salinity
  • Increase fresh water residence time
  • Sustain existing fish & wildlife habitat

Cypress worked for the US Army Corps of Engineers, New Orleans District supporting the LCA 6 program effort in conjunction with the Louisiana Office of Coastal Protection and Restoration and a multidisciplinary team of specialist engineering, scientific and consulting firms.

Louisiana Coastal Area 6 Restoration Program

Cypress was responsible for providing restoration program support to the US Army Corps of Engineers, New Orleans District (USACE MVN) for the Louisiana Coastal Area (LCA) Program for the group of LCA 6 projects. These projects covered a diverse array of large-scale ecosystem restoration techniques such as river diversions, barrier island renourishment, marsh creation, and restoring hydrologic connectivity.

Cypress personnel were responsible for providing planning program support to draft a Summary Report required by the Water Resources Development Act (WRDA) of 2007 which authorized the 6 projects. USACE MVN had not previously undertaken an effort to summarize the findings and content of an integrated feasibility study and NEPA documentation; therefore the initial effort required drafting a document to address the needs of ER-1105-2-100 at a summary level and obtain approval for the template. The Summary Report provided a complete overview of the combined feasibility study and NEPA documents.

Cypress personnel interfaced with many different groups including report authors (6 different companies), the state and federal agencies who contracted the work, internal subcontractors who provided key policy-level and additional editorial review at strategic points, as well as multiple junior-level engineers and scientists. All six reports were completed and undergoing reviews simultaneously resulting in extensive coordination efforts and extensive QA/QC review to ensure the report was well-written and contained the most accurate and up-to-date information from the respective project teams.

This project was done in partnership with Malcolm Pirnie/Arcadis.