Mad Island Marsh Preserve, located on the shores of Matagorda Bay, Texas, has experienced considerable shoreline erosion along its boundary with the Gulf Intracoastal Waterway (GIWW), since construction of the GIWW in the early 1940's.
Shorelines along the GIWW are eroded by waves generated by barge traffic; a section of the Preserve shoreline is also exposed to waves from the south in Matagorda Bay which pass through the cut in the islands of dredge spoil (Fig.
GIWW, supported by Oxford Moulding Technology (OMT), supplies steam-and water-flow control equipment.
Terry Pearson, chairman of GIWW and OMT, says, "There are bound to be many applications which require unblemished, high-gloss, weld-line-free moulded surfaces which avoid the need for paint finishing as well as other impressive advantages.
An operations manager with USACE Galveston District s Navigation Branch, Seth Jones, said, "The GIWW
is an essential component of the nation's navigation network extending for 1,109 miles from Appalachee Bay Florida to Port Isabel Texas.
For the purposes of the study, the shoreline was defined as the edge of the erosional scarp that borders the majority of the GIWW in the study area.
This section of shoreline consists of Spartina marsh growing out into the GIWW with no visible scarp at the water's edge.
OMT has what could be a new generation of injection moulding technology, and GIWW
has a worldwide network of customer services to respond to the inevitable interest in this development.
Engineered Flow sales were down 25 percent, reflecting continued headwinds in the municipal end-market and a negative 17 percentage point impact from GIWW
Added Jonen, "Maintenance dredging in these navigation channels will remove approximately 1,250,000 cubic yards of material from the GIWW
and will keep open this critical navigation channel that links the valley to all ports and businesses in Texas as well as and other states that are served by the GIWW
The GIWW is the third ranked inland waterway in the nation handling 126 million short tons of cargo.
Jones said, Maintenance dredging of the GIWW between Freeport Harbor and Matagorda Bay, Texas, will remove approximately 2.