Type DXF
The Spring Feature Protection was developed to support the Mountainside Overlay District (MOD) components of the zoning overlay district. As a result of the adoption of the new Loudoun County Zoning Ordinance on Dec 13, 2023, two new feature protection were added to the Overlay District, Spring & Ridge Feature Protection, which are subject to the Uses and Development Standards of Section 5.04.
The Spring Feature Protection areas were created by selecting all springs, from the Loudoun County Soils data, that fall within the MOD and buffering them by 300'. These areas were then trimmed to only be within the MDOD to create the Spring Feature Protection Areas.
Data are stored in the corporate ArcSDE Geodatabase as a line feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN.
Loudoun County Office of Mapping and Geographic Information (OMAGI)
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.
There is no extent for this item.
| Maximum (zoomed in) | 1:2,400 |
| Minimum (zoomed out) | 1:20,000 |
Data are stored in the corporate ArcSDE Geodatabase as a point feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88), US Survey foot units.
Loudoun County Office of Mapping and Geographic Information (OMAGI)
8:00-5:00 EST, M-F
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.
See access and use constraints information.
Loudoun County
Retention of attribute accuracy throughout the coverage to geodatabase feature class coversion process was ensured by a 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 coverage to geodatabase feature class conversion process was ensured by a 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%.
The Soil Survey of Loudoun County (field work) was conducted between 1947 and 1952 by soil scientists from Virginia Tech and the USDA Soil Conservation Service. Soils were originally shown on 1938 aerial photography at a scale of 4"= -1 mile; soils were later redrafted to a scale of 1" = 1666' (1:20000) for publication in the USDA's Soil Survey of Loudoun County, Virginia, Series 1951, Number 8, which was issued in September 1960. This publication is out of print, and the supply of copies for public distribution has been exhausted. A revision of the soil survey for Loudoun County has been completed. The manuscript is currently undergoing technical review and publication of the final document is anticipated during the 2006 calendar year.
As part of the County's Geographic Information System (G.I.S.) mapping project, the soil survey maps were redrafted onto the County's base maps, at a scale of 1" = 200', then digitized. This information is available at the Office of Mapping and Geographic Information or through the County soil scientist in the Cooperative Extension Office . Although these updated soil maps rely heavily on the original soil survey, changes in both location of mapping unit lines and mapping unit descriptions/interpretations have occurred
This data set was part of a batch process that converted legacy data from ArcInfo coverage in Librarian to a single-tiled ArcInfo coverage in preparation for a final coversion to ArcSDE Geodatabase Feature Classes. Data were extracted from Librarian using the EXTRACT TOPOLOGICAL command. Multi-tiled data sets were extracted into multiple coverages and then combined based on the feature type(s). Layers with both polygon and arc feature classes were processed with the Arc commands, MAPJOIN and DISSOLVE. Arc feature classes alone were processed with the Arc commands, APPEND and DISSOLVE. Layers with both arc and point feature classes and point feature classes alone were processed with the Arc command, APPEND. When used, the Arc command, DISSOLVE, was given with the <#all> option. All coverages were then reprojected to HARN 83 using the following .prj file specifications: INPUT PROJECTION STATEPLANE UNITS FEET ZONE 5551 DATUM NAD27 NADCON PARAMETERS OUTPUT PROJECTION STATEPLANE UNITS FEET FIPSZONE 4501 DATUM HPGN NADCON PARAMETERS END This dataset was then converted to a feature class in a geodatabase in ArcSDE.
The soils map is continuously being updated based on field site inspections and therefore the soils map merely represents a point in time. Many new soil series concepts have been developed and the emphasis has changed from primarily agricultural use to include urban uses. This report is geared to mapping unit potential for general uses. Mapping unit potential ratings attempt to describe the broad range of conditions found in any given mapping unit for the noted uses. For more site-specific soil interpretations contact the County Soil Scientist in the Cooperative Extension Office.
revised soil survey for Loudoun County to emphasize general uses
currently under technical review
originated soil mapping units and concepts for agricultural uses in Loudoun County
Out of print; copies for cross reference are availabe at the Library, Natural Resource Conservation Service, Loudoun Dept. of Building and Development and the Loudoun Cooperative Extension Office
8:00-4:30 EST, M-F
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.
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Feature geometry.
ESRI
Coordinates defining the features.
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
8:00-4:30 EST, M-F
This metadata reflects the source Geodatabase format and specific elements may not apply if your data is exported to SHP or DXF products. User must be aware that changes to data schema occur during data export that may not be reflected in this metadata, which represents Loudoun County's corporate geodatabase. Acknowledgement of Loudoun County would be appreciated in the use of this metadata.