Remote Sensing Survey of Two Borrow Areas for the Grand Isle and Vicinity Project, Jefferson Parish, Louisiana

Remote Sensing Survey of Two Borrow Areas for the Grand Isle and Vicinity Project, Jefferson Parish, Louisiana

Author: Allen R. Saltus

Publisher:

Published: 1990

Total Pages: 41

ISBN-13:

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This report presents the results of remote sensing surveys and exploratory diving operations conducted at two locations in the vicinity of Grand Isle, Louisiana. The localities surveyed are borrow areas associated with the 'Emergency Erosion Control Structures and Beach Fill' project for Grand Isle, Louisiana. Fill is to be dug from these two areas and used for restoration of a sand-filled dune designed to aid beach stabilization on Grand Isle. The primary instrument used in this survey was the magnetometer. Modern debris and pipelines in one borrow area in Bayou Riguad prohibited reasonable interpretation of collected data. In the borrow area off shore Grand Isle, 21 magnetic anamolies were located. Most of these are thought to represent modern debris and trash. Two locales, however, produced magnetics which may represent shipwreck remains. These areas were investigated through intensive magnetometer survey and diving operations. Neither locales produced historic cultural remains.


Phase I Remote Sensing Marine Archeological Survey of North Prong in Schooner Bayou, Vermilion Parish, Louisiana

Phase I Remote Sensing Marine Archeological Survey of North Prong in Schooner Bayou, Vermilion Parish, Louisiana

Author:

Publisher:

Published: 2000

Total Pages: 0

ISBN-13:

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A Phase I Marine Archeological Remote Sensing Survey was conducted along a segment of the North Prong in Schooner Bayou, Vermilion Parish, Louisiana in support of a proposed Bank Line Stabilization project. The project area is located in North Prong, between the Gulf Intracoastal Waterway (GIWW) and Schooner Bayou, north of the Schooner Bayou Control Structure. The proposed repair and maintenance project will require the dredging of the navigation channel in the GIWW, and the North Prong. In keeping with the New Orleans District's mission to preserve, document, and protect significant cultural resources, this magnetic and acoustic remote sensing survey was undertaken to locate potential archeological remains and in so doing, assist the USACE-NOD in satisfying its responsibilities under Section 106 of the National Historic Preservation Act of 1966, as amended. The survey area for this project consisted of one block representing approximately 517 total acres located alternately on both the right and left descending banks of the North Prong. In total, approximately 8.5 linear miles of river bottom were surveyed. The primary objectives of this study were to identify specific targets that might represent significant submerged cultural resources within the project area, and to provide the USACE-NOD with management recommendations for such resources. These objectives were met with a research design that combined background archival investigations and a marine archeological remote sensing survey. In the analysis of magnetic data, particular attention was paid to those magnetic anomalies that comprise areas of high density, clusters of anomalies, and single anomalies of unusually high amplitude, duration, or those exhibiting complex magnetic signatures. A total of 51 individual magnetic anomalies were identified by this survey.


Phase I Remote Sensing Marine Archeological Survey of the Southwest Pass, Ocean Dredge Material Disposal Site, Plaquemines Parish, Louisiana

Phase I Remote Sensing Marine Archeological Survey of the Southwest Pass, Ocean Dredge Material Disposal Site, Plaquemines Parish, Louisiana

Author:

Publisher:

Published: 2001

Total Pages: 280

ISBN-13:

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This report presents the results of a Phase I Marine Archeological Remote Sensing Survey of the Southwest Pass Ocean Dredged Material Disposal Site (ODMDS) in Plaquemines Parish, Louisiana. This investigation was conducted in September and October 1999, by R. Christopher Goodwin & Associates, Inc. on behalf of the U.S. Army Corps of Engineers, New Orleans District (USACE-NOD). The study was undertaken to assist the USACE-NOD to satisfy its responsibilities under Section 106 of the National Historic Preservation Act of 1966, as amended, prior to continuing the disposal of dredged material at this location. All aspects of the investigations were completed in accordance with the Scope-of-Work, and the Secretary of the Interior's Standards and Guidelines for Archeology and Historic Preservation (Federal Register 48, No 190, 1983). The study area for this project consisted of a single survey block comprising the entire ODMDS, which is located at the southern entrance of the Southwest Pass. The survey block measured a total of 6,652.8 ft (2,027.3 m) x 19,377.6 ft (5,906.4 m), or 2,959.5 acres. The objectives of this study were to identify specific targets that might represent significant submerged cultural resources within the project area, and to provide the USACE-NOD with management recommendations for such resources. These objectives were met with a research design that combined background archival investigations and a marine archeological remote sensing survey. Background research and archival investigations indicated a low to moderate potential for encountering submerged historic cultural resources within the project area. A review of Louisiana archeological Site files and relevant research reports documented no sites within a mile (1.6 km) radius of the project area.


Remote Sensing Survey of Mississippi River-Gulf Outlet, Breton Sound Disposal Area, Plaquemines Parish, Louisiana

Remote Sensing Survey of Mississippi River-Gulf Outlet, Breton Sound Disposal Area, Plaquemines Parish, Louisiana

Author:

Publisher:

Published: 1993

Total Pages: 80

ISBN-13:

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A magnetic and acoustic remote sensing survey for submerged cultural resources was conducted over a 1,600-acre project area off shore of Breton Island, Plaquemines Parish, Louisiana. The project area, which measures a mile wide and 2.5 miles long, encompasses the proposed site of the Mississippi River- Gulf Outlet Breton Sound Disposal Area. The survey was conducted for the U.S. Army Corps of Engineers, New Orleans District, pursuant to Delivery Order 0010, of Contract DACW29-90-D-0018. The proposed disposal of dredge spoil may impact several of the anomalies recorded during the survey. A controlled hydrographic survey was performed over the project area utilizing a proton precession magnetometer to collect magnet data, a side scan sonar to record acoustic anomalies, and a precision echosounder to acquire bathymetry. Real time positioning was maintained by a Differential Global Positioning System (DGPS) linked to a computer navigation program. Seventy-eight magnetic anomalies and one acoustic anomaly were recorded during the survey. The acoustic anomaly, which is associated with a cluster of magnetic targets, appears to be related to modern steel wreckage. In addition to this target, six other clusters of anomalies were distinguished. Of the seven anomaly clusters, additional archeological investigations are recommended for five. Further consideration of other isolated anomalies is not recommended based on the assumption that a ship wrecking in the Breton Sound environs would disperse over a field of at least 50,000 m2, creating multiple anomalies within a confined area.