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The Construction Survey Measurement (Dredge Area Survey Data) Mosaic Dataset is a spatial representation of the seabed elevation (depth) before and after dredge events in outer continental shelf (OCS) lease areas. This catalog serves as a visual aid to identify dredging locations within the borrow areas and enable quantitative and qualitative analyses of survey data to determine volume of sand removed. Having a centralized access to these data facilitates decision making and administrative planning within the Bureau of Ocean Energy Management (BOEM) and the U.S. Army Corps of Engineers (USACE). Section 8 (k) of the Outer Continental Shelf Lands Act (OCSLA) as amended by Public Law 103-426 (enacted in 1994) provides the Bureau of Ocean Energy Management (BOEM), within the U.S. Department of the Interior, the authority to negotiate an agreement for the use of OCS sand, gravel and shell resources. As part of OCSLA 8(k), the BOEM's Marine Minerals Program (MMP) is responsible for managing development of the nations offshore resources in an environmentally and economically responsible way. Key layers of information are needed to support marine mineral resource planning, development and decisions. Non-competitive leases and Memorandum of Agreements (MOAs) are used to convey sand and gravel to support shore protection, beach and coastal wetlands restoration. Environmental studies and / or reports from BOEMs cooperative agreements assist Federal agencies, state agencies, localities and universities to assess offshore sand in federal waters. These bathymetric surveys and associated reports are a critical component of non-energy OCS mineral resource management. BOEM ensures that the removal of any mineral resource is conducted in a safe and environmentally sound manner, and that any potentially adverse impacts on the marine, coastal, or human environments are avoided or minimized. |
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The Construction Survey Measurement (Dredge Area Survey Data) Mosaic Dataset is a spatial representation of the seabed elevation (depth) before and after dredge events in outer continental shelf (OCS) lease areas. This catalog serves as a visual aid to identify dredging locations within the borrow areas and enable quantitative and qualitative analyses of survey data to determine volume of sand removed. Having a centralized access to these data facilitates decision making and administrative planning within the Bureau of Ocean Energy Management (BOEM) and the U.S. Army Corps of Engineers (USACE). Section 8 (k) of the Outer Continental Shelf Lands Act (OCSLA) as amended by Public Law 103-426 (enacted in 1994) provides the Bureau of Ocean Energy Management (BOEM), within the U.S. Department of the Interior, the authority to negotiate an agreement for the use of OCS sand, gravel and shell resources. As part of OCSLA 8(k), the BOEM's Marine Minerals Program (MMP) is responsible for managing development of the nations offshore resources in an environmentally and economically responsible way. Key layers of information are needed to support marine mineral resource planning, development and decisions. Non-competitive leases and Memorandum of Agreements (MOAs) are used to convey sand and gravel to support shore protection, beach and coastal wetlands restoration. Environmental studies and / or reports from BOEMs cooperative agreements assist Federal agencies, state agencies, localities and universities to assess offshore sand in federal waters. These bathymetric surveys and associated reports are a critical component of non-energy OCS mineral resource management. BOEM ensures that the removal of any mineral resource is conducted in a safe and environmentally sound manner, and that any potentially adverse impacts on the marine, coastal, or human environments are avoided or minimized. |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Construction Survey Measurements (Dredge Area Survey Data) Mosaic Dataset is a collection of pre- and post-dredge bathymetric data in raster format that were gathered as part of Outer Continental Shelf (OCS) dredging activities associated with authorized leases maintained by the Bureau of Ocean Energy Management (BOEM), part of the U.S. Department of the Interior. Entities are authorized to dredge sand, gravel or shell resources from the OCS after entering into a Negotiated Non-Competitive Lease or Memorandum of Agreement with BOEM. As part of the lease agreement lessees are required to conduct pre- and post-dredge bathymetric surveys over the entire footprint of the authorized lease area and typically occur within 90 days of dredging activity; actual time frame specified in stipulations found in a Negotiated Non-Competitive Lease or Memorandum of Agreement with BOEM. Units, horizontal/vertical datums, instrumentation used, and associated project ID are listed as summary attributes for each raster. Updates to this dataset will occur regularly as leases are added or renewed and when further dredging activity occurs. Area covered: U.S. OCS (primarily 3nm to 12nm offshore). Each raster in this mosaic is stored in its native projection. The rasters are projected into NAD83 on the fly by the MMIS WebViewer. Should a user export a raster from the database, or download it through the viewer, the downloaded file will be in the native projection.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Bureau of Ocean Energy Management (BOEM) provides the data for use "as is". BOEM provides this information with the understanding that it is not guaranteed to be accurate, correct or complete and conclusions drawn from such information are the responsibility of the user. While every effort has been made to ensure the accuracy, correctness and timeliness of materials presented within the limits of the current state of the art, BOEM assumes no responsibility for errors or omissions, nor as a result of the failure of the data to function on a particular system. BOEM makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from or actions undertaken on the basis of, such data and information are the sole responsibility of the user. The maps shown here are for illustration and planning purposes only and are not suitable for site-specific decision making. The data are not suitable for navigational purposes. Information found here should not be used for making financial or any other commitments. This data was developed by the U.S. Government; no other proprietary rights may be attached to them nor may they be sold to the U.S. Government as part of any procurement of products or services. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the Bureau of Ocean Energy Management (BOEM) as the source of this information.</SPAN></P></DIV></DIV></DIV> |
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ConstructionRasters |
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["Outer Continental Shelf","GULF OF MEXICO","ATLANTIC OCEAN","GLOBAL OCEAN","NORTH ATLANTIC OCEAN","SEA FLOOR","US","Depth","Bathymetric Survey","Pre-dredge Survey","Echosoundings","Sand","Multibeam Soundings","Borrow Area","Bureau of Ocean Energy Management","Single Beam Soundings","Post-dredge Survey"] |
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en-US |
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150000000 |
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