Sanitary Sewer Manholes of Lovettsville, VA
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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Loudoun County, Virginia, Office of Mapping and Geographic Information (OMAGI)
- Publication_Date: 20140827
- Title: Sanitary Sewer Manholes of Lovettsville, VA
- Geospatial_Data_Presentation_Form: vector digital data
- Other_Citation_Details:
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For further information on sanitary manholes within the town of Lovettsville, contact the Town Office at 540-822-5788.
- Description:
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- Abstract:
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This feature class identifies all of the sanitary sewer manholes in the town of Lovettsville, VA. It also includes information on the diameter, depth, & ID of each manhole. All of the manholes with an ID number are located on a 2006 sanitary sewer map of Lovettsville, VA & were collected using the map as a field guide. All other manholes collected will be assisgned an ID number at a later date.
- Purpose:
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Sanitary manholes were collected at the request of the town of Lovettsville for town mapping purposes. They can be used in town related planning projects to map the present infrastructure of the town.
- Supplemental_Information:
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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.
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -77.650183
- East_Bounding_Coordinate: -77.632405
- North_Bounding_Coordinate: 39.284507
- South_Bounding_Coordinate: 39.261250
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: none; Employee generated
- Theme_Keyword: waste
- Theme_Keyword: sanitary
- Theme_Keyword: sewer
- Theme_Keyword: manhole
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
- Theme_Keyword: utilitiesCommunication
- Place:
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- Place_Keyword_Thesaurus: none; Employee generated
- Place_Keyword: County
- Place_Keyword: Loudoun
- Place_Keyword: Virginia
- Access_Constraints: None
- Use_Constraints:
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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.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: Public Information Counter
- Contact_Address:
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- Address_Type: mailing and physical
- Address: MS 65
- Address: 1 Harrison Street SE, 2nd Floor
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703) 771-5778
- Contact_Facsimile_Telephone: (703) 771-5075
- Contact_Electronic_Mail_Address: mapping@loudoun.gov
- Hours_of_Service: 8:00-4:30 EST, M-F
- Native_Data_Set_Environment:
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Microsoft Windows Server 2008 Version 6.0 (Build 6002) Service Pack 2; ESRI ArcGIS 10.0.5.4400
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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Retention of attribute accuracy throughout the GPS data file to geodatabase feature class coversion process was ensured by a manual QA/QC programmatic check. To meet satisfactory QA/QC requirements the input data file and output feature class must have, on a record by record basis, identical attribution to all the user-defined attribution.
- Logical_Consistency_Report: Topologically clean
- Completeness_Report:
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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.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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Retention of coordinate accuracy throughout the GPS data file to geodatabase feature class conversion process ensured by following a specific differential correction process with GPS Pathfinder software. Base files for differential correction are downloaded from a Continuously Operating Reference Station (CORS) at Gaithersburg, MD. The GPS data files are differentially corrected using the Standard Automatic Code Correction Process. This process results in sub-meter accuracy for corrected data files; predominately at a 0.5-1 meter distance, with some files at 30-50 cm & 1-2 meters. The corrected files are then exported using the County's standary projection & copied into the Lovettsville PGDB & appropriate feature class. To meet satisfactory QA/QC requirements the input GPS file and output feature class must have the same record total, and on a record by record basis, same location as corrected GPS files. Features may be spatially adjusted using 2007 digital photography if higher sub-meter accuracy places them incorrectly.
- Lineage:
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- Source_Information:
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- Type_of_Source_Media: None
- Source_Contribution:
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Request for assistance in data collection by Keith Markel, Lovettsville Town Manager in January 2008
- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Publication_Date: 20060102
- Title: Town Sanitary Map
- Publication_Information:
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- Publisher: R. Stuart Royer & Associates, Inc
- Type_of_Source_Media: None
- Source_Citation_Abbreviation: Town Sanitary Map
- Source_Contribution:
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Town Sanitary Sewer Map provided location of large set of manholes & corresponding ID number
- Process_Step:
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- Process_Description:
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GPS collection of all existing sanitary sewer manholes in the town of Lovettsville with Trimble GPS unit in two seperate groups. A 2006 sanitary sewer map from R. Stuart Royer & Associates, Inc. was used as a reference to collect the first portion of sanitary manholes. The map ID number for each was given to the corresponding GPS collected manhole in the field. A GPS data dictionary was created & used to collect targeted attribute values for each feature type collected.
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: GIS Specialist
- Process_Step:
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- Process_Description:
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The second portion of manholes collected were all other existing sanitary manholes that were not located on 2006 sanitary sewer map. These were concentrated primarily in the new developing areas of the town and around the town square which recently underwent a traffic pattern change.
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: GIS Specialist
- Process_Step:
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- Process_Description:
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GPS data downloaded from unit & then differentially corrected in GPS Pathfinder using base files from CORS at Gaithersburg, MD. The Standard Automatic Code Correction process was used to correct the data, which resulted in a predominately sub-meter accuracy of .5 to 1 meters (1.5 to 3 feet). The differentially corrected data was then exported from Pathfinder as a sample shapefile & copied into the existing Lovettsville PGDB & corresponding feature class.
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: GIS Specialist
- Process_Step:
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- Process_Description:
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GPS update/collection of a single, new manhole along the new N Church St near the town square. Two other existing manholes on the western edge of town that were unable to be located in 2008 were also collected. A data dictionary was used to collect the targeted attrbute values. GPS data downloaded from unit & then differentially corrected in GPS Pathfinder using base files from CORS at Hagerstown, MD. The Standard Automatic Code Correction process was used to correct the data, which resulted in a predominately sub-meter accuracy of .5 to 1 meters (1.5 to 3 feet).
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: GIS Specialist
- Process_Step:
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- Process_Description:
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GPS update/collection of existing manholes throughout Lovettsville that were unable to be located in 2008. A data dictionary was used to collect the targeted attrbute values. GPS data downloaded from unit & then differentially corrected in GPS Pathfinder using base files from CORS at Hagerstown, MD. The Standard Automatic Code Correction process was used to correct the data, which resulted in a predominately sub-meter accuracy of .5 to 1 meters (1.5 to 3 feet).
- Process_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: GIS Specialist
- Process_Step:
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- Process_Description:
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GPS update/collection of sanitary manholes in the newly developed area of the town along Eisentown Dr & north of Kimberly Kristin Wy on the western side of the town.
- Process_Date: 20140623
- Spatial_Data_Organization_Information:
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- Indirect_Spatial_Reference: Loudoun County
- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: Entity point
- Point_and_Vector_Object_Count: 327
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Map_Projection:
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- Map_Projection_Name: Lambert Conformal Conic
- Lambert_Conformal_Conic:
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- Standard_Parallel: 38.03333333333333
- Standard_Parallel: 39.2
- Longitude_of_Central_Meridian: -78.5
- Latitude_of_Projection_Origin: 37.66666666666666
- False_Easting: 11482916.66666666
- False_Northing: 6561666.666666666
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.00020833333333333297
- Ordinate_Resolution: 0.00020833333333333297
- Planar_Distance_Units:
- Geodetic_Model:
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- Horizontal_Datum_Name: D North American 1983 HARN
- Ellipsoid_Name: GRS 1980
- Semi-major_Axis: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257222101
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: GISDBB.GISBROW.LVILLE_SANITARY_MANHOLES_POINT
- Attribute:
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- Attribute_Label: OBJECTID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
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- Attribute_Label: SM_DIAMETER
- Attribute_Definition: Diameter of manhole lid
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: User generated text
- Attribute:
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- Attribute_Label: SM_DEPTH
- Attribute_Definition: Depth of manhole
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: User generated text
- Attribute:
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- Attribute_Label: SM_ID
- Attribute_Definition: ID number of manhole
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: User generated text
- Attribute:
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- Attribute_Label: SM_UPD_SOURCE
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: 0
- Enumerated_Domain_Value_Definition: Undetermined
- Enumerated_Domain:
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- Enumerated_Domain_Value: 1
- Enumerated_Domain_Value_Definition: Legacy
- Enumerated_Domain:
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- Enumerated_Domain_Value: 2
- Enumerated_Domain_Value_Definition: County
- Enumerated_Domain:
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- Enumerated_Domain_Value: 3
- Enumerated_Domain_Value_Definition: Contract
- Attribute:
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- Attribute_Label: SM_UPD_DATE
- Attribute_Definition: Feature creation or modification date
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: User generated text
- Attribute:
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- Attribute_Label: SM_UPD_USER
- Attribute_Definition:
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Not for public distribution. Internal User ID of editor creating or modifying a feature
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: User generated text
- Attribute:
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- Attribute_Label: SHAPE
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: Public Information Counter
- Contact_Address:
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- Address_Type: mailing and physical
- Address: MS 65
- Address: 1 Harrison Street SE, 2nd Floor
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703)771-5778
- Contact_Facsimile_Telephone: (703)771-5075
- Contact_Electronic_Mail_Address: mapping@loudoun.gov
- Hours_of_Service: 8:00-4:30 EST, M-F
- Distribution_Liability: See access and use constraints information.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: DXF
- Format_Specification: AutoCad Digital Exchange File
- Digital_Transfer_Option:
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- Offline_Option:
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- Offline_Media: dvd
- Fees:
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Loudoun County distributes spatial data in ArcGIS database or shapefile & DXF format for the cost of reproduction. Countywide spatial datasets may be purchased for $22 per DVD for up to 4.5 GB of data. There is a $100 surcharge to purchase countywide topography, and a $3 charge if the item is to be mailed. If the customer wants the data in DXF format and/or would like OMAGI to custom select specific geographic areas of the County, there is an additional $7 per 15 minute increment labor charge. Select aerial imagery is also available.
- Ordering_Instructions:
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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.
- Metadata_Reference_Information:
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- Metadata_Date: 20140828
- Metadata_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: Metadata Specialist
- Contact_Address:
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- Address_Type: mailing and physical
- Address: MS 65
- Address: 1 Harrison Street SE, 2nd Floor
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703)771-5778
- Contact_Facsimile_Telephone: (703)771-5075
- Contact_Electronic_Mail_Address: mapping@loudoun.gov
- Hours_of_Service: 8:00-4:30 EST, M-F
- Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
- Metadata_Use_Constraints:
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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.
Generated by mp version 2.9.6 on Thu Aug 28 12:29:11 2014