Elevation: Daytona Beach Area 1 FT Contour (LINE)

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: TekConsultants.net, Inc.

Publication_Date: Unpublished Material

Title: Elevation: Daytona Beach Area 1 FT Contour (LINE)

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Palataka, FL

Publisher: St. Johns River Water Management District

Online_Linkage:

Server=earth; Service=esri_sde; Database=gislib; User=gislib; Version=SDE.DEFAULT

Description:

Abstract:

This dataset consists of digitized 1 foot contours from topographic maps with aerial photo background covering an area in the vicinity of the City of Daytona Beach (Purchase Order No. PO34782, PO35028).

Purpose:

This data set depicts elevation information about geographic features within the project area and is to be used for purposes defined by the St. Johns River Water Management District.

Supplemental_Information:

Data was digitized from maps A2, A3, A4, A5, B2, B3, B4, C2, C3, D2, D3, D5, D6, D7, E2, E3, E4, E5, E6, E7, E8 . Contractor: TEKConsultants. Purchase Order: PO34782, PO35028

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 198301

Currentness_Reference: Source materials

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -81.160519

East_Bounding_Coordinate: -81.058612

North_Bounding_Coordinate: 29.217370

South_Bounding_Coordinate: 29.100479

Keywords:

Theme:

Theme_Keyword_Thesaurus: SJRWMD-GIS Metadata Thesaurus

Theme_Keyword: Contour mapping

Theme_Keyword: Elevation

Theme_Keyword: 1 Foot Elevation

Place:

Place_Keyword_Thesaurus: SJRWMD-GIS Metadata Thesaurus

Place_Keyword: City of Daytona Beach, Florida

Place_Keyword: Florida

Access_Constraints: Define by the St. Johns River Water Management District.

Use_Constraints: Defined by the St. Johns River Water Management District.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: TekConsultants.net, Inc.

Contact_Person: Ed Di Pollina

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing address

Address: 8870 N. Himes Ave. - Suite 102

City: Tampa

State_or_Province: FL

Postal_Code: 33614

Country: USA

Contact_Voice_Telephone: 1-800-848-7218 ext:244

Contact_Facsimile_Telephone: 305-832-0803

Contact_Electronic_Mail_Address: ed@tekconsultants.net

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The horizontal positional accuracy of digitized contours is related with source data accuracy, and additional errors introduced in the digitizing process. According to margin information in source maps, their Positional accuracy for 1" = 200' scale photogrammetric mapping complies with National Map Accuracy Standards. Additional errors inherent to the scanning and digitizing process include: . scanning deformation . image registration (a total of 1,100 points were used for referencing 21 maps, with a Root Mean Square error of +/- 0.6 meters (+/- 2 ft)) . line tracing Final mapped data is referenced to UTM, Zone 17, HPGN Datum, units are METERS The positional accuracy of final mapped data was verified using available horizontal control points, by comparison of digitized coordinates, and coordinates from their National Geodetic Survey datasheets. Six control points were available in the project area, with differences ranging from 0.571 m To 1.895 m, with 1.33 m (4.4 ft) in average.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: +/- 6 feet

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The vertical positional accuracy of digitized contours is related with source data accuracy. According to margin information in source maps, their Positional accuracy for 1 ft. contour mapping complies with National Map Accuracy Standards.

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: +/- 0.5 feet

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Publication_Date: 1984

Publication_Time: Unknown

Title: Aerial photography with contours

Geospatial_Data_Presentation_Form: map

Other_Citation_Details: Date of photography: January 1983

Source_Scale_Denominator: 2400

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 198301

Source_Currentness_Reference: ground condition

Process_Step:

Process_Description:

Image registration: It included referencing plans using available control points. In this project coordinate grids and Horizontal control points (when available) were used as control points. Grid points were converted from the source material projection system (NAD1927 StatePlane Florida East) to the final mapped data projection system (NAD1983 HARN UTM Zone 17N)

Process_Date: 2003.04.28

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: TekConsultants.net Inc.

Contact_Person: Ed Di Pollina

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing address

Address: 8870 N Himes Ave. - Suite 102

City: Tampa

State_or_Province: FL

Postal_Code: 33614

Country: USA

Contact_Voice_Telephone: 1-800-848-7218 ext: 244

Contact_Facsimile_Telephone: 305-832-0803

Contact_Electronic_Mail_Address: ed@tekconsultants.net

Process_Step:

Process_Description:

Image enhancement: It included color management (color filtering, color replacement, adjustments in the tonal curve) in order to improve the line recognition process.

Process_Date: 2003. 05

Process_Step:

Process_Description:

On-screen contours digitizing / assign elevations: This process was partially automated, with some degree of manual on-screen digitizing. This was due to the fact that the grayscale aerial photo background made it difficult to separate contour lines for automatic contour generation. Attributes were also assigned during this process.

Process_Date: 2003.05

Process_Step:

Process_Description:

Conversion to coverage: Dgn CAD files were imported to a geodatabase and then converted to coverage format.

Process_Date: 2003.05

Process_Step:

Process_Description:

Quality Control and corrective editing: It included the following QC checks: 1. Topology validation to assure that lines were continuous and without gaps. 2. Attribute validation and completeness, through automated and manual checks. 3. Visual inspection of contours overlaid with source material, to assure digitizing accuracy.

As a result of QC checks, corrective editing was performed.

Process_Date: 2003.05

Process_Step:

Process_Description:

Sheet integration and final QC. In this final step, sheets are integrated and a final visual check is performed.

Process_Date: 2003.06

Process_Step:

Process_Description:

SJRWMD QA: After receiving the final products from Telconsultants, IR GIS staff performed QA on the two coverages. Minor changes were made to the contour line.

Process_Date: 2003.06

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: SJRWMD

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\Temp\xml12.tmp

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 6975

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Transverse Mercator

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -81.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000182

Ordinate_Resolution: 0.000182

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983_HARN

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: National Geodetic Vertical Datum of 1929

Altitude_Resolution: 1.000000

Altitude_Distance_Units: feet

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: GISLIB.TOPO_DAYTONA_LINE

Entity_Type_Definition: arc attribute table - contours

Entity_Type_Definition_Source: SJRWMD

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: ELEV

Attribute_Definition:

Elevation, as identified on the original topographic map, or the highest value for carrying contour (C_TYPE=2); or estimated value for supplementary contour.

Attribute_Definition_Source: SJRWMD

Attribute:

Attribute_Label: CARRYELEV

Attribute_Definition:

The lowest value for carrying contour. The default value is 999.

Attribute_Definition_Source: SJRWMD

Attribute:

Attribute_Label: C_DESC

Attribute_Definition: Contour description.

Attribute_Definition_Source: SJRWMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0

Enumerated_Domain_Value_Definition: Default value, no description

Enumerated_Domain:

Enumerated_Domain_Value: 2

Enumerated_Domain_Value_Definition:

Depression, identifies closed contours surrounding a basin or sink.

Enumerated_Domain:

Enumerated_Domain_Value: 4

Enumerated_Domain_Value_Definition:

Best estimate, identifies contours depicted in areas of dense or complex relief where the value of a given contour cannot be absolutely determined from the source material.

Enumerated_Domain:

Enumerated_Domain_Value: 5

Enumerated_Domain_Value_Definition:

Dashed contour, indicate standard vertical accuracy reduced by tree cover.

Enumerated_Domain:

Enumerated_Domain_Value: 6

Enumerated_Domain_Value_Definition:

Dashed contour & Depression, identifies closed contours surrounding a basin or sink that also has vertical accuracy reduced by tree cover.

Enumerated_Domain:

Enumerated_Domain_Value: 7

Enumerated_Domain_Value_Definition:

Error, error in source material, estimated value, need to check later.

Attribute:

Attribute_Label: C_TYPE

Attribute_Definition: Contour type.

Attribute_Definition_Source: SJRWMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1

Enumerated_Domain_Value_Definition: Normal Contour, depicts standard contour intervals.

Enumerated_Domain:

Enumerated_Domain_Value: 2

Enumerated_Domain_Value_Definition:

Carrying contour, identifies a portion of a contour at cliff embankments and like features where contours merge into a single line.

Enumerated_Domain:

Enumerated_Domain_Value: 3

Enumerated_Domain_Value_Definition:

Supplementary Contour, contours added between intermediate contours at the time of map compilation to aid in defining topography in areas of minimal slope.

Enumerated_Domain:

Enumerated_Domain_Value: 4

Enumerated_Domain_Value_Definition:

Shoreline contour, contours defining the boundaries of a body of water.

Enumerated_Domain:

Enumerated_Domain_Value: 9

Enumerated_Domain_Value_Definition: Closure arc, closes a poly.

Attribute:

Attribute_Label: SHAPE

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: SHAPE.LEN

Distribution_Information:

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 2.554

Metadata_Reference_Information:

Metadata_Date: 20051028

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: TekConsultants.net, Inc.

Contact_Person: Ed Di Pollina

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing address

Address: 8870 N. Himes Ave. - Suite 102

City: Tampa

State_or_Province: FL

Postal_Code: 33614

Country: USA

Contact_Voice_Telephone: 1-800-848-7218 ext: 244

Contact_Facsimile_Telephone: 305-832-0803

Contact_Electronic_Mail_Address: Ed@TekConsultants.net

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile