crac - Chesapeake Bay Critical Area Line

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Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator:
Chesapeake Bay Critical Area Commission, Maryland Department of Natural Resources
Publication_Date: 2001
Publication_Time: Unknown
Title: crac - Chesapeake Bay Critical Area Line
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Annapolis, Maryland
Publisher: Maryland Department of Natural Resources
Online_Linkage: www.msgic.state.md.us/techtool
Description:
Abstract:
In 1984, the General Assembly enacted the Chesapeake Bay Critical Area Act to regulate development, manage land use and conserve natural resources on land in those areas designated as Critical Area. For this document, the Critical Area is all land and water areas within 1000 feet of the tidal waters' edge or from the landward edge of adjacent tidal wetlands and the lands under them. Georeferenced digital data files of the critical Area have been produced for Baltimore City and the 16 Maryland counties with land located within the Critical Area. The digital maps produced for each jurisdiction are polygons depicting the Critical Area and the land use classifications recognized by the Chesapeake Bay Critical Area Commission (CBCAC). Each jurisdiction is a separate file. The data were produced from hard copy parcel maps originally submitted by the counties as part of the requirements for developing their Critical Area Program.
Purpose:
All of the 60 jurisdictions (16 counties and 44 municipalities) within the Critical Area are required to establish land use policies for development that will accommodate growth and minimize the impact of human activities on the Bay. As a result, the local jurisdictions are required to inventory or map a variety of resources in order to be able to monitor the implementation of the local programs. The CBCAC needed a tool that could help its staff oversee the implementation of the approved local programs and to track development activities in the Critical Area. Thus, CBCAC undertook the digitization of county Critical Area maps in a cooperative effort with other State Agencies: the Maryland Department of Planning (MDP), the Department of Assessment and Taxation (DAT) anddifferent units of the Department of Natural Resources (DNR).
Supplemental_Information:
Critical Area Jurisdiction Abbreviations; AA - Anne Arundel County, BA - Baltimore County, BC - Baltimore City, CA - Calvert County, CE - Cecil County, CH - Charles County, CO - Caroline County, DO - Dorchester County, HA - Harford County, KE - Kent County, PG - Prince George's County, QA - Queen Anne's County, SM - St. Mary's County, SO - Somerset County, TA - Talbot County, WI - Wicomico County, WO - Worcester County.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2001
Time_of_Day: Unknown
Currentness_Reference: Publication Date
Status:
Progress: In Work
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -79.4938
East_Bounding_Coordinate: -75.045
North_Bounding_Coordinate: 39.77425
South_Bounding_Coordinate: 37.8713
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Critical Area
Theme_Keyword: Critical Area line
Theme_Keyword: Critical Area maps
Theme_Keyword: Critical Area boundary lines
Theme_Keyword: CBCAC
Theme_Keyword: Shoreline
Theme_Keyword: Critical Area land use designation
Theme_Keyword: Intensely Developed Areas
Theme_Keyword: Limited Development Areas
Theme_Keyword: Resource Conservation Areas
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Maryland
Place_Keyword: MD
Place_Keyword: Anne Arundel County
Place_Keyword: Baltimore County
Place_Keyword: Baltimore City
Place_Keyword: Calvert County
Place_Keyword: Caroline County
Place_Keyword: Cecil County
Place_Keyword: Charles County
Place_Keyword: Dorchester County
Place_Keyword: Harford County
Place_Keyword: Kent County
Place_Keyword: Prince George's County
Place_Keyword: Queen Anne's County
Place_Keyword: St. Mary's County
Place_Keyword: Somerset County
Place_Keyword: Talbot County
Place_Keyword: Wicomico County
Place_Keyword: Worcester County
Access_Constraints: None
Use_Constraints:
This data set represents the Department of Natural Resources interpretation of the location and extent of the Critical Area; however, the digital maps are not recognized as the "official" maps. In accordance with Subsection 8-1807(a) of the Critical Area Act, the Critical Area consists of (1) All waters and lands under the Chesapeake Bay and its tributaries to the head of tide as indicated on the State wetland maps, and all State and private wetlands designated under Environment Article, Title 16, annotated Code of Maryland; (2) All land and water areas within 1,000 feet beyond the landward boundaries of State or private wetlands and the of tides designated under Environment Article, Article 16, Annotated Code of Maryland; and (3) Modification to these areas through inclusions or exclusions proposed by local jurisdictions and approved by Commission as specified in Natural Resources Article, Subsection 8-1807, annotated Code of Maryland. These maps are hard copy maps that cannot be exactly replicated in a digital format; therefore, some interpretation was necessary to create the digital line. Hard copy maps depicting the official Critical Area boundary line are available for review at the Chesapeake Bay Critical Area Commission, and at most local planning and zoning departments.

The Department of Natural Resources makes no warranty, expressed or implied, as to the use or appropriateness of Spatial Data, and there are no warranties of merchantability or fitness for a particular purpose or use. The intended use is for general information and planning purposes. It is not intended to be used to determine the exact location of the Critical Area boundary on a specific parcel or to determine the acreage within the Critical Area on a specific site. The information contained in Spatial Data is from publicly available sources, but no representation is made as to the accuracy or completeness of Spatial Data. The Department of Natural Resources shall not be subject to liability for human error, error due to software conversion, defect, or failure of machines, or any material used in the connection with the machines, including tapes, disks, CD-ROM’s or DVD-ROM’s and energy. The Department of Natural Resources shall not be liable for any lost profits, consequential damages, or claims against the Department of Natural Resources by third parties. The liability of the Department of Natural Resources for damage regardless of the form of the action shall not exceed any distribution fees that may have been paid in obtaining Spatial Data.

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Maryland Chesapeake Bay Critical Area Commission
Contact_Position: Project Evaluation Division
Contact_Address:
Address_Type: mailing and physical address
Address:
1804 West Street Suit 100
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401
Country: United States
Contact_Voice_Telephone: 410-260-3460
Contact_TDD/TTY_Telephone: 877-260-8DNR(3460)
Hours_of_Service: 0800 - 1700 EST
Contact_Instructions:
Please refer to www.dnr.state.md.us/criticalarea for further questions and contacts.
Data_Set_Credit:
There were many parties involved in producing Maryland's Critical Area data and the key parties will be listed. Each county and city (listed below) produced a hard copy map and submitted the map to the Chesapeake Bay Critical Area Commission (CBCAC) for approval. Through Coastal Zone Management grants, CBCAC digitized the county data. Maryland DNR's Chesapeake and Coastal Watershed Service finalized the data and is handling data distribution. Anne Arundel County, Office of Planning and Code Enforcement., Baltimore City, Department of Planning., Baltimore County, Department of Environmental Protection and Resource Management., Caroline County, Economic Development Commission., Calvert County, Department of Planning and Zoning (digital data not included)., Cecil County, Office of Planning and Zoning., Charles County, Department of Planning and Zoning., Dorchester County, Planning and Zoning Office., Harford County, Department of Planning and Zoning., Kent County, County Planning Commission., Prince George's County, Department of Environmental Resources., Queen Anne's County, Office of Planning and Zoning., St. Mary's County, Department of Planning and Zoning., Somerset County, Department of Technical and Community Services., Talbot County, Office of Planning and Zoning., Wicomico County, Office of Planning and Zoning., and Worcester County, Office of Planning, Permits and Inspections.
Native_Data_Set_Environment:
This data has been a work in progress for a number of years. As a consequence, the hardware and software have evolved numerous times since the project began. The Critical Area maps were digitized using Altek and GTCO 60" x 48" digitizer and AutoCAD version 9. Workstation ARC/INFO (version unknown), PC ARC/INFO version 3.4D, ARC View version 3.0 and Arc/View version 3.2, and Mico Images TNT mip's version 6.4 were used to produce and provide quality control on the data.
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy of attributes are based on the correctness of what was presented on the maps submitted by the local agencies for approval by Chesapeake Bay Critical Area Commission. The polygons were compared to each of the county maps to ensure that there were attributes associated with each polygon, that the attributes were within set values, and matained consistency with the hard copy maps.
Logical_Consistency_Report:
Each area is a closed polygon. Each polygon has a centroid created by PC ARC/INFO where the attribute is attached. Extra nodes and label points have been removed. Polygons were checked and all of the polygons are essential to meet the rules set for creation of the file. Dangles and overshoots have been removed.
Completeness_Report:
The Critical Area boundary line data is visually inspected for completeness by comparring the data with the hardcopy Critical Area boundary line maps. All attribute divisions are matched to the Property View Parcel data and shoreline matched to the CNES, Inc. Panchromatic spot imagery. All upland areas 1000 feet from the tidal portion of the Chesapeake Bay have been designated as the "Critical Area" in accordance with subsection 8-1807, of the Critical Area Act. However due to zoning considerations and local planning processes, the 1000 foot line may not be altered in some areas. The Chesapeake Bay Critical Area Commission independently reviewed the data for completeness and consistency to set standards.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The source material coordinates were Maryland State Plane 1927 (NAD 1927) and units in feet. All subsequent work retained the same coordinates and units. The original source material was either 24000 scale 7.5 quadrangle maps or 7200 scale parcel maps. In some cases, adjustments to the vectors were necessary to improve the accuracy of the fit over 10 meter panchromatic SPOT satellite imagery. Therefore, the data is considered map accurate to a scale of 1:24,000. Operator "best judgement" was used concerning the positional accuracy. There were no definitive assessments made to determine a quantitative measure of the positional accuracy.

Great effort was extended to match the shoreline as closely to the imagery as possible. However, be aware that there is a noticable shift in Dorchester County with in the wetlands and shorelines. This area of Maryland has always been difficult to match due to differences in data sources and difficulties in georeferencing. Efforts maybe taken in the future to correct this shift to some other reference source. But at this time, data is matched as closely as possible to the 1998 Spot Satellite Imagery.

Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Ther were no vertical references.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Anne Arundel County, Office of Planning and Code Enforcement., Baltimore City, Department of Planning., Baltimore County, Department of Environmental Protection and Resource Management., Caroline County, Economic Development Commission., Calvert County, Department of Planning and Zoning (digital data not included)., Cecil County, Office of Planning and Zoning., Charles County, Department of Planning and Zoning., Dorchester County, Planning and Zoning Office., Harford County, Department of Planning and Zoning., Kent County, County Planning Commission., Prince George's County, Department of Environmental Resources., Queen Anne's County, Office of Planning and Zoning., St. Mary's County, Department of Planning and Zoning., Somerset County, Department of Technical and Community Services., Talbot County, Office of Planning and Zoning., Wicomico County, Office of Planning and Zoning., and Worcester County, Office of Planning, Permits and Inspections.
Publication_Date: Unknown
Publication_Time: Unknown
Title: Critical Area Classification and Land Use Planning maps.
Source_Scale_Denominator: 24000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20010101
Time_of_Day: Unknown
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: Unknown.
Source_Contribution: Provided the maps for production of data.
Process_Step:
Process_Description:
Work done in the first phase is not well documented due to the age of the project, the variety of parties involved, and change in personnel. Each county produced hard copy critical area boundary line maps. However, that process is not documented. Initially the Chesapeake Bay Critical Area Commission started the arduous process of digitizing the hard copy maps. This process is also not documented. It is believed that most of this was done in ARC CAD or Auto CAD due to the type of files received from the commission. Attribution of the polygons was not completed at that time. The Maryland Department of Planning was involved in attributing some if not all of the polygon line work. And sometime during this process, the files were merged into county files.
Process_Date: Unknown
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Maryland Department of Natural Resources
Contact_Person: Ken Miller
Contact_Position: Chief. Spatial Data Production Services
Contact_Address:
Address_Type: mailing and physical address
Address: Tawes State Office Building E-2 580 Taylor Avenue
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401-2397
Country: USA
Contact_Voice_Telephone: 410-260-8751
Contact_TDD/TTY_Telephone: 410-260-8835
Contact_Facsimile_Telephone: 410-260-8759
Contact_Electronic_Mail_Address: kenmiller@dnr.state.md.us
Hours_of_Service: 0800 - 1700 Monday to Friday (EST)
Process_Step:
Process_Description:
The second phase of the process was to compile all previous work. The Maryland DNR’s Chesapeake and Coastal Watershed Service, GIS Division obtained the digital data sets (Arc coverage files, Arc export files, Arc shape files, and in some cases Cad files) by county for the critical area boundary lines. The county data sets with multiple files were then merged into individual county files using PC ARC/INFO version 3.5. In some cases adjustments had to be made in order to merge data sets where there were positional and length inaccuracies between the data sets. Positional accuracy of the county files was accomplished by visually matching the county files to 10 meter panchromatic SPOT satellite imagery (1994-1995). At this point all data was registered to MD State Plane 1927 (NAD1927) with units measured in feet. All county files were then checked for shoreline fit. If there were inaccuracies between the SPOT imagery and the critical area data files, some data shifting (rubber sheeting) was necessary to make the data as accurate as possible. When all edits were completed, the data was built and cleaned (using PC ARC/INFO version 3.5) to meet MD-DNR 1-24,000 scale standards
Process_Date: 1997
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Maryland Department of Natural Resources
Contact_Person: Ken Miller
Contact_Position: Chief. Spatial Data Production Services
Contact_Address:
Address_Type: mailing and physical address
Address: Tawes State Office Building E-2 580 Taylor Avenue
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401-2397
Country: USA
Contact_Voice_Telephone: 410-260-8751
Contact_TDD/TTY_Telephone: 410-260-8835
Contact_Facsimile_Telephone: 410-260-8759
Contact_Electronic_Mail_Address: kenmiller@dnr.state.md.us
Hours_of_Service: 0800 - 1700 Monday to Friday (EST)
Process_Step:
Process_Description:
The third phase of the process was to compare the Critical Area data files to the hard copy maps produced by the counties and the 1972 State tidal wetland maps for Maryland. The data files were viewed (using ARC View 3.2) over the 10-meter panochromatic SPOT imagery (1998) and the MD Property View parcel images for this process. The data was then compared and measured at a scale of 1-10,000 to the hard copy critical area boundary line maps provided by the Critical Area Commission. Discrepancies in the data files were corrected based upon the distance and labels represented in the hardcopy maps. When a discrepancy could not be resolved, Mary Owens of the Critical Area Commission was consulted as to the best course of action. When Mary Owens could not make the determination, the problem was forwarded to the county agency responsible for creating the initial data. In most cases the hard copy critical area boundary line maps did not make accurate distinctions between tidal wetlands and the critical area boundaries. In these instances, the 1972 State wetland maps originally used to determine the critical area boundary line were also compared to the data files. When the distinctions were not accurate, corrections were made to the data files using the best fit between the 19872 State wetland maps and the National Wetlands Inventory (NWI) wetlands data files. When all edits were complete the data was built and cleaned (using ARC/INFO version 8.0) to meet MD DNR 1-24,000 scale standards.
Process_Date: 2000
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Maryland Department of Natural Resources
Contact_Person: Ken Miller
Contact_Position: Chief. Spatial Data Production Services
Contact_Address:
Address_Type: mailing and physical address
Address: Tawes State Office Building E-2 580 Taylor Avenue
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401-2397
Country: USA
Contact_Voice_Telephone: 410-260-8751
Contact_TDD/TTY_Telephone: 410-260-8835
Contact_Facsimile_Telephone: 410-260-8759
Contact_Electronic_Mail_Address: kenmiller@dnr.state.md.us
Hours_of_Service: 0800 - 1700 Monday to Friday (EST)
Process_Step:
Process_Description:
The final process was to perform quality control and to prepare the critical area data for distribution. The Chesapeake Bay Critical Area Commission (CBCAC) staff performed the task of checking the data for quality and accuracy. The critical area data was imported into a Micro Images format (using TNT MIPS version 6.4) and warped to MD State Plane 1983 (NAD1983) with units in meters. The data was then put into MERLIN on line (Maryland’s Environmental Resource and Land Information Network - www.mdmerlin.net) system where the CBCAC would have access. Once the CBCAC did their quality control of the data, all needed edits were referred back to MD DNR/GIS for correction. All corrections were made and data was once again built and cleaned (using ARC/INFO version 8.0) to meet MD DNR 1-24,000 scale standards.
Process_Date: 2000
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Maryland Department of Natural Resources
Contact_Person: Ken Miller
Contact_Position: Chief. Spatial Data Production Services
Contact_Address:
Address_Type: mailing and physical address
Address: Tawes State Office Building E-2 580 Taylor Avenue
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401-2397
Country: USA
Contact_Voice_Telephone: 410-260-8751
Contact_TDD/TTY_Telephone: 410-260-8835
Contact_Facsimile_Telephone: 410-260-8759
Contact_Electronic_Mail_Address: kenmiller@dnr.state.md.us
Hours_of_Service: 0800 - 1700 Monday to Friday (EST)
Cloud_Cover: Unknown
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 1900
Lambert_Conformal_Conic:
Standard_Parallel: 38.3
Standard_Parallel: 39.45
Longitude_of_Central_Meridian: -77
Latitude_of_Projection_Origin: 37.6666666667
False_Easting: 400000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate Pair
Coordinate_Representation:
Abscissa_Resolution: 1
Ordinate_Resolution: 1
Planar_Distance_Units: m
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Captured
Entity_Type_Definition: none
Entity_Type_Definition_Source: Maryland Department of Natural Resources
Attribute:
Attribute_Label: ??CRAC_
Attribute_Definition: G polygon identifier.
Attribute_Definition_Source: ArcInfo calculation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: G polygon identifier.
Enumerated_Domain_Value_Definition:
G polygon identifier. Note: the "??" represents the county code identifier.
Enumerated_Domain_Value_Definition_Source:
Default calculation by ArcInfo during conversion into Coverage Format.
Attribute:
Attribute_Label: ??CRAC_ID
Attribute_Definition: User polygon identification.
Attribute_Definition_Source: ArcInfo calculation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: User polygon identification.
Enumerated_Domain_Value_Definition:
User polygon identification. Note: the "??" represents the county code identifier.
Enumerated_Domain_Value_Definition_Source:
Default calculation by ArcInfo during conversion into Coverage Format.
Attribute:
Attribute_Label: AREA
Attribute_Definition: "Area" of G polygon.
Attribute_Definition_Source: ArcInfo calculation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: area
Enumerated_Domain_Value_Definition: ArcInfo calculation
Enumerated_Domain_Value_Definition_Source:
Default calculation by ArcInfo during conversion into Coverage Format.
Attribute_Measurement_Frequency: As needed
Attribute:
Attribute_Label: INFO
Attribute_Definition: Extranious information associated with the data.
Attribute_Definition_Source: Maryland Department of Natural Resources
Attribute_Domain_Values:
Unrepresentable_Domain:
This field is basically a text field that indicates specific information about the feature in question. And in some instances if a change was made to the original map data, a growth allocation code is present.
Attribute:
Attribute_Label: LAND
Attribute_Definition: Line 1000 feet landward of the state tidal wetlands boundary.
Attribute_Definition_Source: Chesapeake Bay Critical Area Commission
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CL
Enumerated_Domain_Value_Definition:
"Corporate Limits"; areas where the Critical Area boundary line contains properties within cities and towns. These areas are part of the Critical Area, but only a few been added (the rest are planned for future updates).
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: RCA
Enumerated_Domain_Value_Definition:
"Resource Conservation Areas"; areas dominated by natural environments such as wetlands, forests, and abandoned fields or areas of resource utilization activities such as agriculture, forestry, fisheries or aquaculture. At the time of initial mapping, these areas had housing density less than one dwelling unit per five acres; and dominant land uses were agriculture, wetland, forest, barren land, surface water, or open space.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: IDA
Enumerated_Domain_Value_Definition:
"Intensely Developed Areas"; Those areas, where residential, commercial, institional, and/or industrial, developed land uses predominate, and where relatively little natural habitat occur. At the time of initial mapping, these areas had housing densities equal to or greater than four dwelling units per acre or a concentration of nonresidential uses or public sewer and water collection and distribution systems serving an area with a housing density greater than three dwelling units per acre.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: LDA
Enumerated_Domain_Value_Definition:
"Limited Development Areas"; those areas with low to moderate development intensity uses. They contain areas of natural plant and animal habitats and the quality of runoff from these areas has not been substantially altered or impaired. At the time of initial mapping, these areas had housing density ranging from one dwelling unit per five acres up to four dwelling units per acre. They were areas not dominated by agriculture, wetland, forest, barren land, surface water, or open space. They also include areas similar to IDA, but less than 20 acres in size, and areas having public sewer or water or both.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: Wetla
Enumerated_Domain_Value_Definition:
"Wetland"; areas designated as wetland or open water that are not included within the Critical Area boundary line. However, be aware that in some locations wetlands are included within the Critical Area Line. For more detail see official Critical Area Line maps. It is also defined as tidal wetlands or tidal bodies of water from which the Critical Area boundary line was determined.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: FED
Enumerated_Domain_Value_Definition:
"Federal Lands"; areas where the Critical Area boundary line includes Federally owned properties. The Critical Area Act does not apply directly to Federally-owned properties, but is implemented through the Coastal Zone Management Act.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: OUT
Enumerated_Domain_Value_Definition:
"out"; areas within the Critical Area boundary line that are not considered part of the critical area because they are outside the 1000 foot boundary constraint.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: CL_IDA
Enumerated_Domain_Value_Definition:
"Corporate Limit Intensly developed Areas"; areas where the Critical Area boundary line contains properties within cities and towns and are areas, where residential, commercial, institional, and/or industrial, developed land uses predominate, and where relatively little natural habitat occur. At the time of initial mapping, these areas had housing densities equal to or greater than four dwelling units per acre or a concentration of nonresidential uses or public sewer and water collection and distribution systems serving an area with a housing density greater than three dwelling units per acre.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: CL_LDA
Enumerated_Domain_Value_Definition:
"Corporate Limit Limited Development Areas"; areas where the Critical Area boundary line contains properties within cities and towns and are areas with low to moderate development intensity uses. They contain areas of natural plant and animal habitats and the quality of runoff from these areas has not been substantially altered or impaired. At the time of initial mapping, these areas had housing density ranging from one dwelling unit per five acres up to four dwelling units per acre. They were areas not dominated by agriculture, wetland, forest, barren land, surface water, or open space. They also include areas similar to IDA, but less than 20 acres in size, and areas having public sewer or water or both.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: CL_RCA
Enumerated_Domain_Value_Definition:
"Corporate Limit Resource Conservation Areas"; areas where the Critical Area boundary line contains properties within cities and towns and dominated by natural environments such as wetlands, forests, and abandoned fields or areas of resource utilization activities such as agriculture, forestry, fisheries or aquaculture. At the time of initial mapping, these areas had housing density less than one dwelling unit per five acres; and dominant land uses were agriculture, wetland, forest, barren land, surface water, or open space.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Enumerated_Domain:
Enumerated_Domain_Value: State
Enumerated_Domain_Value_Definition:
This code was created specifically for the Popular Island Area. Popular Island is a dredge disposal fill site owned by the State of Maryland. However, it still comes under the jurisdiction of Critical Area Legislation. Therefore, special exemptions were put into place for the Popular Island Project.
Enumerated_Domain_Value_Definition_Source: Chesapeake Bay Critical Area Commission
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: "Perimeter" of G polygon.
Attribute_Definition_Source: ArcInfo calculation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: perimeter
Enumerated_Domain_Value_Definition: ArcInfo calculation
Enumerated_Domain_Value_Definition_Source:
Default calculation by ArcInfo during conversion into Coverage Format.
Attribute_Measurement_Frequency: As needed
Overview_Description:
Entity_and_Attribute_Overview:
The main attributes used in this data (IDA, LDA, and RCA) can be explored in more detail through the publication called "Critical Area and You" or by accessing the Critical Area online at www.dnr.state.md.us/criticalarea.
Entity_and_Attribute_Detail_Citation: Unknown.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ken Miller
Contact_Organization: Maryland Department of Natural Resources
Contact_Position: Chief. Spatial Data Production Services
Contact_Address:
Address_Type: mailing and physical address
Address: Tawes State Office Building E-2 580 Taylor Avenue
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401-2397
Country: USA
Contact_Voice_Telephone: 410-260-8751
Contact_TDD/TTY_Telephone: 410-260-8835
Contact_Facsimile_Telephone: 410-260-8759
Contact_Electronic_Mail_Address: kenmiller@dnr.state.md.us
Hours_of_Service: 0800 - 1700 Monday to Friday (EST)
Distribution_Liability: None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI shape files
Format_Version_Date: 20021031
Format_Information_Content: Thematic spatial data
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://dnrweb.dnr.state.md.us/gis/data/>
Access_Instructions: Please refer to <http://dnrweb.dnr.state.md.us/gis/data/>
Fees: None
Ordering_Instructions: Please refer to <http://dnrweb.dnr.state.md.us/gis/data/>
Standard_Order_Process:
Non-digital_Form:
Paper maps may be available. Please refer to the Maryland Department of Natural Resource's Hardcopy Products Order Form found at <http://www.msgic.state.md.us/techtool/license/index.htm> for cost and availability information.
Fees:
DNR charges for the cost of distribution of it's paper maps. Please refer to the Maryland Department of Natural Resource's Hardcopy Products Order Form found at <http://www.msgic.state.md.us/techtool/license/index.htm> for cost and availability information.
Ordering_Instructions:
Please refer to the Maryland Department of Natural Resource's Hardcopy Products Order Form found at <http://www.msgic.state.md.us/techtool/license/index.htm> for cost and availability information.
Turnaround: 1-3 business days after receiving payment.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI shape files
Format_Version_Date: 20021031
Format_Information_Content: Thematic spatial data
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 650 Megabytes
Recording_Density_Units: Megabytes
Recording_Format: ISO 9660
Compatibility_Information: ISO 9660 compatible CD-ROM drives
Fees: Please refer to www.msgic.state.md.us/techtool
Ordering_Instructions: Please refer to www.msgic.state.md.us/techtool
Turnaround: 1-3 business days after receiving payment.
Custom_Order_Process: None
Metadata_Reference_Information:
Metadata_Date: 20040309
Metadata_Review_Date: 20040310
Metadata_Future_Review_Date: 20050309
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ken Miller
Contact_Organization: Maryland Department of Natural Resources
Contact_Position: Chief. Spatial Data Production Services
Contact_Address:
Address_Type: mailing and physical address
Address: Tawes State Office Building E-2 580 Taylor Avenue
City: Annapolis
State_or_Province: Maryland
Postal_Code: 21401-2397
Country: USA
Contact_Voice_Telephone: 410-260-8751
Contact_TDD/TTY_Telephone: 410-260-8835
Contact_Facsimile_Telephone: 410-260-8759
Contact_Electronic_Mail_Address: kenmiller@dnr.state.md.us
Hours_of_Service: 0800 - 1700 Monday to Friday (EST)
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Security_Information:
Metadata_Security_Classification_System: none
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: none
Generated by mp version 2.5.2 on Fri Mar 12 10:56:28 2004