| Draft Chesapeake Bay Preservation Areas (CBPA) of Loudoun County, VA (2011) | |
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Data format: SDE Feature Class File or table name: GISDBB.GISBROW.CBPA_POLY Coordinate system: Lambert Conformal Conic Theme keywords: environment, inland waters, boundaries, Chesapeake Bay Preservation Areas (CBPA), Resource Management Area (RMA), Resource Protection Area (RPA) |
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Abstract:
NOTE: The Loudoun County Board of Supervisors has voted to suspend discussions on the proposed Chesapeake Bay Preservation Act amendments until the State of Virginia completes Phase 2 of the Watershed Implementation Plan (WIP) and local requirements are determined.
NOTE: The status of this data is PROPOSED.
NOTE: The Board of Supervisors indicated its desire to remove Resource Protection Area (RPA) adjacent to ponds during the March 1, 2011 Committee of the Whole Work Session. The extent of the RPA has subsequently been updated to reflect the Board's direction.
The Chesapeake Bay Preservation Areas (CBPA) means any land designated by the County pursuant to Part III of the Chesapeake Bay Preservation Area Designation and Management Regulations and Section 10.1-2107 of the Code of Virginia. The Chesapeake Bay Preservation Areas (CBPA) dataset is comprised of Resource Protection Areas (RPA), Resource Management Areas (RMA), Perennial Waterbodies, and Non-Jurisdictional Areas.
An RPA is (i) all wetlands connected by surface flow and contiguous to water bodies with perennial flow; and (ii) a 100-foot Buffer Area measured horizontally from, and located adjacent to and landward of (i) and along both sides of any water body with perennial flow, as measured horizontally from the channel scarline.
An RMA is all areas of the County not designated as a Resource Protection Area.
Visit www.loudoun.gov/ChesapeakeBay for more information. Additional questions can also be directred to county staff through the Chesapeake Bay information line at 703-777-0655 or by email to ChesBay@loudoun.gov. |
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Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
NOTE: The Loudoun County Board of Supervisors has voted to suspend discussions on the proposed Chesapeake Bay Preservation Act amendments until the State of Virginia completes Phase 2 of the Watershed Implementation Plan (WIP) and local requirements are determined. NOTE: The status of this data is PROPOSED. NOTE: The Board of Supervisors indicated its desire to remove Resource Protection Area (RPA) adjacent to ponds during the March 1, 2011 Committee of the Whole Work Session. The extent of the RPA has subsequently been updated to reflect the Board's direction. The Chesapeake Bay Preservation Areas (CBPA) means any land designated by the County pursuant to Part III of the Chesapeake Bay Preservation Area Designation and Management Regulations and Section 10.1-2107 of the Code of Virginia. The Chesapeake Bay Preservation Areas (CBPA) dataset is comprised of Resource Protection Areas (RPA), Resource Management Areas (RMA), Perennial Waterbodies, and Non-Jurisdictional Areas. An RPA is (i) all wetlands connected by surface flow and contiguous to water bodies with perennial flow; and (ii) a 100-foot Buffer Area measured horizontally from, and located adjacent to and landward of (i) and along both sides of any water body with perennial flow, as measured horizontally from the channel scarline. An RMA is all areas of the County not designated as a Resource Protection Area. Visit www.loudoun.gov/ChesapeakeBay for more information. Additional questions can also be directred to county staff through the Chesapeake Bay information line at 703-777-0655 or by email to ChesBay@loudoun.gov.
The Chesapeake Bay Preservation Areas are regulatory boundaries implemented to protect and improve the water quality of the Chesapeake Bay, its tributaries, and other state waters by minimizing the effects of human activity upon these waters in order to provide for the health, safety and general welfare of the citizens of Loudoun County.
Data are stored in the corporate ArcSDE Geodatabase as a polygon feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88), US Survey foot units.
ground condition
Every reasonable effort has been made to assure the accuracy of these data. Loudoun County, Virginia does not assume any liability arising from the use of these data. These data are provided without warranty of any kind, expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular service. Reliance on these data is at the risk of the user. These data were generated for use by Loudoun County and are available to the public. These data are intended for use at 1:2400 scale or smaller. Acknowledgement of Loudoun County would be appreciated in products derived from this data.
1 Harrison Street SE, mail stop 60A
P.O. Box 7000
Retention of attribute accuracy throughout the personal geodatabase or shapefile to ArcSDE geodatabase feature class coversion process was ensured by a manual or automatic QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have, on a record by record basis, identical attribution when comparing all concatenated fields to all the user-defined attribution.
Topologically clean
Features may have been eliminated or generalized due to scale and intended use. To assist Loudoun County, Virginia in the maintenance of the data, please provide any information concerning discovered errors, omissions, or other discrepancies found in the data.
Retention of coordinate accuracy throughout the personal geodatabase or shapefile to ArcSDE geodatabase feature class conversion process was ensured by a manual or automatic QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have the same record total, and on a record by record basis, area, perimeter, and length differential of less than +/- 0.5%.
"Any features captured in Phase III (2005 data) were compiled to meet ASPRS and NSSDA standards for Class I map at 1:2400 scale, but a rigid accuracy test was not performed."
Chesapeake Bay Preservation Act, Sections 10.1-2100 et seq., of the Code of Virginia
The Perennial Waterbody component of the CBPA is compiled using subsets of the Soil Drains, Soil Water Polygons, and (basemap) Waterbody data. This data is then buffered 100 feet to create the RPA. This is then incorporated into a countywide coverage using the county and town boundaries in order to define the areas in RMA and those that are Non-Jurisdictional.
This data layer was updated with a schema change and new source data layer. The schema change involved removing the CB_JURISDICTION field from layer. The layer was updated with the addition of "Perennial Waterbodies" data as another source layer.
Per Loudoun County BoS's direction, the Resource Protection Area (RPA) adjacent to ponds was removed from the data and the extent of the RPA updated
Not for public distribution. Internal User ID of editor creating or modifying a feature
Loudoun County
Name of the source application document
Loudoun County
Internal feature number.
ESRI
Type of preservation area
Loudoun County
Non-jurisdictional area
Loudoun County
Resource Management Areas; all areas of County not designated as a Resource Protection Area
Loudoun County
Resource Protection Area; all water bodies with perennial flow
Loudoun County
Perrenial waterbodies
Loudoun County
Not currently utilized. This field will track when a record FIRST appears on the GIS.
Loudoun County
Source that created or modified feature class
Loudoun County
Date feature class created or modified
Loudoun County
This is a foreign key field to be used to relate maintenance records
Loudoun County
Not currently utilized. This field will track when a record LAST appears on the GIS
ESRI
Feature geometry.
ESRI
CB_UPD_SOURCE: Source that created or modified feature class
Code Description 0 Undetermined 10 Legacy 21 County 30 Contract 40 Model
1 Harrison Street S.E., 2nd floor, mail stop 65
Every reasonable effort has been made to assure the accuracy of these data. Loudoun County, Virginia does not assume any liability arising from the use of these data. These data are provided without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular service. Reliance on these data is at the risk of the user.
ESRI Personal Geodatabase Feature Class
ESRI Shapefile
AutoCad Digital Exchange File
Size limit: 4.5 GB. Visit our website at: http://www.loudoun.gov/omagi, click on "Loudoun County Mapping Documents & Order Forms." The "Forms" directory will lead you to custom & standard (countywide) data order forms. Hardcopy maps may also be available; please contact the Mapping Office Public Information Counter for more information regarding all data requests.
1 Harrison Street SE, 2nd Floor
MS 65