DredgeAreas

ISO-19139 Metadata

Resource Identification Information:

Citation:
Title:  DredgeAreas

Reference date - publication:  2024-10-01

Presentation format:  mapDigital

Party responsible for the resource - publisher: 
Organization's name: U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program

Contact information:
Address:
Delivery point: 45600 Woodland Road, VAM-LD
City: Sterling
Administrative area: VA
Postal code: 20166
Country:  US
e-mail address: marineminerals@boem.gov
Online resource:
Name of resource: BOEM MMIS website
Online location:http://www.boem.gov/Marine-Minerals-Program
Connection protocol: HyperText Protocol
Function performed:  download
Application profile: web browser
Hours of service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)
Party responsible for the resource - originator: 
Organization's name: U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program

Themes or categories of the resource:  oceans, planningCadastre

Place keywords:
Keywords:  GULF OF MEXICO, ATLANTIC OCEAN, GLOBAL OCEAN, NORTH ATLANTIC OCEAN, SEA FLOOR, Outer Continental Shelf

Thesaurus name:
Title:  NASA/GCMD Location Keywords

Reference date - publication:  2021-01-26

Place keywords:
Keywords:  GULF OF MEXICO, ATLANTIC OCEAN, GLOBAL OCEAN, NORTH ATLANTIC OCEAN, SEA FLOOR, Outer Continental Shelf

Thesaurus name:
Title:  NASA/GCMD Location Keywords

Reference date - publication:  2021-01-26

Place keywords:
Keywords:  GULF OF MEXICO, ATLANTIC OCEAN, GLOBAL OCEAN, NORTH ATLANTIC OCEAN, SEA FLOOR, Outer Continental Shelf

Thesaurus name:
Title:  NASA/GCMD Location Keywords

Reference date - publication:  2021-01-26

Place keywords:
Keywords:  GULF OF MEXICO, ATLANTIC OCEAN, GLOBAL OCEAN, NORTH ATLANTIC OCEAN, SEA FLOOR, Outer Continental Shelf

Thesaurus name:
Title:  NASA/GCMD Location Keywords

Reference date - publication:  2021-01-26

Place keywords:
Keywords:  GULF OF MEXICO, ATLANTIC OCEAN, GLOBAL OCEAN, NORTH ATLANTIC OCEAN, SEA FLOOR, Outer Continental Shelf

Thesaurus name:
Title:  NASA/GCMD Location Keywords

Reference date - publication:  2021-01-26

Place keywords:
Keywords:  GULF OF MEXICO, ATLANTIC OCEAN, GLOBAL OCEAN, NORTH ATLANTIC OCEAN, SEA FLOOR, Outer Continental Shelf

Thesaurus name:
Title:  NASA/GCMD Location Keywords

Reference date - publication:  2021-01-26

Place keywords:
Keywords:  US

Thesaurus name:
Title:  U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.

Reference date - publication:  1995-01-01

Theme keywords:
Keywords:  Geology

Thesaurus name:
Title:  Library of Congress Subject Headings

Reference date - publication:  2021-03-01

Descriptive keywords:
Keywords:  Downloadable Data

Thesaurus name: ArcGIS Content Type
Abstract:  Dredge area polygons represent the approximate lateral extent of where dredging of outer continental shelf (OCS) sediment has occurred within authorized OCS lease areas, which are maintained by the Bureau of Ocean Energy Management (BOEM), part of the U.S. Department of the Interior. The dredged material (e.g. sediment) is typically transported via pipeline and deposited along the shoreline of a pre-determined coastal area needing nourishment. 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. Section 8 (k) of the OCS Lands Act (OCSLA), as amended by Public Law 103-426 (enacted in 1994), gives BOEM the authority to negotiate an agreement for the use of OCS sand, gravel, and shell resources for use in: (1) a project for shore protection, beach restoration, or coastal restoration undertaken by a Federal, State, or local government agency; or (2) for use in a construction project funded in whole or part by or authorized by the Federal government. This dataset is a collection of dredge areas under BOEM's purview. Attribution consists of state, OCS lease number, project ID, borrow area ID, construction (dredging) start and end dates, dredged volume, and delineation quality; see attribute definitions for full explanations. This dataset will be updated as new data are received from lessees.

Purpose: The dredge areas feature class serves as a geospatial record of where individual dredge events have occurred within OCS borrow areas authorized for use by the Bureau of Ocean Energy Management (BOEM), part of the U.S. Department of the Interior. The footprint of each polygon represents the approximate lateral extent of changes to the seabed (increased depth) that have occurred directly as a result of dredging. Each polygon is delineated based on analysis and interpretation of before- and after-dredge bathymetric data, the computed bathymetric surface difference (e.g., the output surface resulting from subtracting after-dredge bathymetric data from before-data bathymetric data over an equally-sized grid). The analysis of these data enables BOEM to monitor and quantify natural and anthropogenic changes (e.g., dredged volume) to the seabed in OCS borrow areas, which facilitates comprehensive resource management and conservation. 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. Section 8 (k) of the OCS Lands Act (OCSLA), as amended by Public Law 103-426 (enacted in 1994), gives BOEM the authority to negotiate an agreement for the use of OCS sand, gravel, and shell resources for use in: (1) a project for shore protection, beach restoration, or coastal restoration undertaken by a Federal, State, or local government agency; or (2) for use in a construction project funded in whole or part by or authorized by the Federal government. This dataset is a collection of dredge areas under BOEM's purview. Attribution consists of state, OCS lease number, project ID, borrow area ID, construction (dredging) start and end dates, approximate dredged volume, and delineation quality; see attribute definitions for full explanations of how individual fields are calculated (if applicable). This dataset will be updated as new data are received from lessees.

Dataset language:  eng
Dataset character set:  utf8

Status:  underDevelopment
Maintenance:
Update frequency:  asNeeded


Resource constraints:
Constraints:
Limitations of use: 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.

Resource constraints:
Legal constraints:
Other constraints: This data is in the public domain and has no access restrictions.

Resource constraints:
Security constraints:
Classification:  unclassified
Classification system: FIPS 199 Security Classification

Additional restrictions on handling the resource: There are no restrictions; the data is releasable to the public.

Spatial representation type:  vector

Processing environment: Esri ArcPro

Extent:
Geographic element - Bounding rectangle:
West longitude: -93.548236
East longitude: -75.193337
North latitude: 37.857258
South latitude: 25.680481
Extent:
Extent description: publication date

2021-07-23T00:00:00 2024-10-01T00:00:00
Extent:
Geographic element - Bounding rectangle:
Extent contains the resource: true
West longitude: -93.548243
East longitude: -74.046795
North latitude: 39.688174
South latitude: 25.680486
Supplemental information: Source (bathymetric) data are available upon request. The most current version of this dataset can be downloaded via the Marine Minerals Information System (MMIS) viewer at https://mmis.boem.gov.

Point of contact - pointOfContact: 
Organization's name: U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program
Contact's position: Oceanographer

Contact information:
Phone:
Voice: 703-787-1747
Address:
Delivery point: 45600 Woodland Road, VAM-LD
City: Sterling
Administrative area: VA
Postal code: 20166
Country:  US
e-mail address: marineminerals@boem.gov
Online resource:
Name of resource: BOEM MMIS website
Online location:http://www.boem.gov/Marine-Minerals-Program
Connection protocol: HyperText Protocol
Function performed:  download
Application profile: web browser
Hours of service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)
Contact instructions: http://www.boem.gov/Marine-Minerals-Program

Spatial Representation - Vector:

Level of topology for this dataset:  geometryOnly
Geometric objects:
Object type:  composite
Object count: 69

Content Information - Feature Catalogue Description:

Feature catalogue's language:  eng
Catalogue accompanies the dataset: true
Catalogue complies with ISO 19110: true

Feature types in the dataset:

Reference System Information:

Reference system identifier:
Value: 3857
Code space: EPSG
Version: 6.18.3(9.3.1.2)

Data Quality Information:

Scope of quality information:
Level of the data:dataset

Lineage:
Process step:
When the process occurred:  2024-10-01T00:00:00
Description: The spatial and tabular data presented in this dataset were identified by the Bureau of Ocean Energy Management (BOEM) Marine Minerals Program (MMP) for the MMIS project as being critical for MMP's decision making and management responsibilities of Federal Outer Continental Shelf (OCS) mineral exploration and Federal non-energy sand/gravel lease activities. All OCS marine mineral lessees are required to submit pre- and post-dredge bathymetric data, which are then analyzed by BOEM staff to verify the reported material extraction volumes, that dredging solely occurred within the authorized lease area boundaries, and to gain an understanding of seabed dynamics within borrow and the surrounding vicinity. The approximate lateral extent of dredging within each lease area was determined based on analysis and interpretation of before- and after-dredge bathymetric data, the computed bathymetric surface difference between each survey, and or operational dredge plant data.A polygon representing the approximate extent of dredging was manually digitized around the area disturbed (generally where depth has increased) directly as a result of dredge activity. Later, a master layer was created in the MMIS geodatabase data model to house all dredge area polygons in a single feature class (reprojected into the NAD83 geodetic reference system). A list of attributes was developed including the corresponding lease number, the borrow area ID (e.g. Shoal A), construction (dredging) start and ends dates, calculated and reported dredge volume in cubic yards, and a qualitative description of the accuracy of the delineated dredge area (partially based on the pixel resolution). Attribute data were collected from lease documents, post construction reports, survey reports, and survey data. Next, the disparate dredge area shapefiles and their attribute data were loaded into the MMIS Dredge Areas feature class. For increased accessibility, each dredge area polygon was linked to the corresponding PDF lease document(s). For specific process information regarding acquisition, please reference the individual lease documents.

Source data:
Level of the source data: Attribute data were collected from lease documents provided by lessees. Source data used to delineate the approximate extent of dredging were also provided by the lessees. These data were utilized by BOEM to produce the dredge areas features.

Source citation:
Title:  BOEM Archives
Alternate titles:  BOEM Archives

Reference date - publication:  2024-10-01

Presentation format:  documentHardcopy

Party responsible for the resource - originator: 
Organization's name: U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program

Party responsible for the resource - originator: 
Organization's name: Multiple investigators and projects

Extent:
Extent description: publication date

1995-05-17T00:00:00 2024-10-01T00:00:00
Data quality report - Conceptual consistency:
Name of the test: Conceptual consistency: adherence to rules of the conceptual schema
Type of test:  indirect

Measure description: The MMIS data model utilizes a hierarchical structure where an ESRI enterprise geodatabase represents the top tier, and feature datasets and raster catalogs are the secondary tiers which contain groupings of similar data layers. These individual data layers were identified by MMP as important, and they make up the bottom tier. Most individual vector layers and tables are collections of data from multiple sources and across multiple dates. Extensive research went into the construction of (1) the hierarchical groupings of data (primarily by subject matter and file format) and (2) technical aspects of the data model. Data within the geodatabase was consolidated to reduce redundancy, resulting in several stand-alone tables. Relationship classes utilizing global IDs were built between vector layers and stand-alone tables in order to link disparate data. The entire MMIS data model was originally constructed using ESRI ArcGIS Diagrammer, a tool that creates and edits a geodatabase schema. The resulting geodatabase structure, data, and relationship classes were reviewed thoroughly by multiple individuals using ESRI Geodatabase Diagrammer Add-In, ESRI ArcGIS, and Microsoft Visio. ESRI Geodatabase Diagrammer Add-In creates a detailed break-down of the geodatabase and a Visio data model poster.

Evaluation method: The MMIS data model utilizes a hierarchical structure where an ESRI enterprise geodatabase represents the top tier, and feature datasets and raster catalogs are the secondary tiers which contain groupings of similar data layers. These individual data layers were identified by MMP as important, and they make up the bottom tier. Most individual vector layers and tables are collections of data from multiple sources and across multiple dates. Extensive research went into the construction of (1) the hierarchical groupings of data (primarily by subject matter and file format) and (2) technical aspects of the data model. Data within the geodatabase was consolidated to reduce redundancy, resulting in several stand-alone tables. Relationship classes utilizing global IDs were built between vector layers and stand-alone tables in order to link disparate data. The entire MMIS data model was originally constructed using ESRI ArcGIS Diagrammer, a tool that creates and edits a geodatabase schema. The resulting geodatabase structure, data, and relationship classes were reviewed thoroughly by multiple individuals using ESRI Geodatabase Diagrammer Add-In, ESRI ArcGIS, and Microsoft Visio. ESRI Geodatabase Diagrammer Add-In creates a detailed break-down of the geodatabase and a Visio data model poster.

Data quality report - Completeness omission:
Name of the test: Completeness omission: data absent from the dataset, as described by the scope
Type of test:  indirect

Measure description: The spatial data and attribute tables loaded into the MMIS data model are believed to be complete, in regards to maintaining each data layer/table after retrieving it from its source. Please refer to the scientific reports, as well as BOEM MMP Leases, negotiated agreements, Memoranda of Agreements, and project completion reports, for discussions of the results on the corresponding source data. Most individual vector layers and tables in the MMIS data model are collections of data from multiple sources and across multiple dates. Most likely, these MMIS layers/tables will continue to have more data loaded in the future, therefore expanding upon the list of sources and dates. Additionally, the Pacific Outer Continental Shelf (OCS) and Alaska OCS regions may eventually be added to the data model, aside from the Atlantic and Gulf of Mexico OCS regions.

Evaluation method: The spatial data and attribute tables loaded into the MMIS data model are believed to be complete, in regards to maintaining each data layer/table after retrieving it from its source. Please refer to the scientific reports, as well as BOEM MMP Leases, negotiated agreements, Memoranda of Agreements, and project completion reports, for discussions of the results on the corresponding source data. Most individual vector layers and tables in the MMIS data model are collections of data from multiple sources and across multiple dates. Most likely, these MMIS layers/tables will continue to have more data loaded in the future, therefore expanding upon the list of sources and dates. Additionally, the Pacific Outer Continental Shelf (OCS) and Alaska OCS regions may eventually be added to the data model, aside from the Atlantic and Gulf of Mexico OCS regions.

Data quality report - Quantitative attribute accuracy:
Name of the test: Quantitative attribute accuracy: accuracy of quantitative attributes
Type of test:  indirect

Measure description: Please refer to the scientific reports, as well as Bureau of Ocean Energy Management (BOEM) Marine Minerals Program (MMP) Leases, negotiated agreements, cooperative agreements, Memoranda of Agreements, and project completion reports, for accuracy statements on the corresponding source data. These documents are referenced in the attribute tables, where appropriate. In regards to attribute assignment in the Marine Minerals Information Systems (MMIS) data model, every effort was made to load source data into MMIS without error or modification. Some attributes contain domain restrictions in an effort to standardize the field entries and to decrease potential inconsistent entries (e.g., spelling, grammar, typographical errors, and subject matter) in the attribute.

Evaluation method: Please refer to the scientific reports, as well as Bureau of Ocean Energy Management (BOEM) Marine Minerals Program (MMP) Leases, negotiated agreements, cooperative agreements, Memoranda of Agreements, and project completion reports, for accuracy statements on the corresponding source data. These documents are referenced in the attribute tables, where appropriate. In regards to attribute assignment in the Marine Minerals Information Systems (MMIS) data model, every effort was made to load source data into MMIS without error or modification. Some attributes contain domain restrictions in an effort to standardize the field entries and to decrease potential inconsistent entries (e.g., spelling, grammar, typographical errors, and subject matter) in the attribute.

Data quality report - Absolute external positional accuracy:
Name of the test: Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true
Type of test:  indirect

Measure description: unknown

Evaluation method: Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true

Data quality report - Absolute external positional accuracy:
Name of the test: Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true
Type of test:  indirect

Measure description: unknown

Evaluation method: Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true

Distribution Information:

Format:
Format name: Enterprise Geodatabase Feature Class
Format version: ArcGIS 10.8.1

Transfer options:

Metadata Information:

Metadata language:  eng
Metadata character set:  utf8


Last update:  2024-10-01
Maintenance:
Date of next update:  2026-01-01
Update frequency:  unknown



Metadata contact - pointOfContact: 
Organization's name: U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program
Contact's position: Oceanographer

Contact information:
Phone:
Voice: 703-787-1747
Address:
Delivery point: 45600 Woodland Road, VAM-LD
City: Sterling
Administrative area: VA
Postal code: 20166
Country:  US
e-mail address: marineminerals@boem.gov
Online resource:
Name of resource: BOEM MMIS website
Online location:http://www.boem.gov/Marine-Minerals-Program
Connection protocol: HyperText Protocol
Function performed:  download
Application profile: web browser
Hours of service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)
Contact instructions: http://www.boem.gov/Marine-Minerals-Program
Scope of the data described by the metadata:  dataset

Name of the metadata standard used: NAP - Metadata
Version of the metadata standard: 1.2

Metadata identifier: 54B29768-EB93-4D42-BE88-0134D900BE04