Elevation: SJRWMD 1FT 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: Engineering Division, SJRWMD through contract #92W289.

Publication_Date: Unpublished Material

Publication_Time: Unknown

Title: Elevation: SJRWMD 1FT Contour (Line)

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Topographic one-foot contours

Issue_Identification: Topography, contours, elevations

Publication_Information:

Publication_Place: SJRWMD, Palatka, Florida, USA

Publisher: SJRWMD

Online_Linkage:

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

Larger_Work_Citation:

Citation_Information:

Publication_Date: Unpublished Material

Publication_Time: Unknown

Geospatial_Data_Presentation_Form: vector digital data

Description:

Abstract:

This data set contains one-foot topographic contours assembled from section-size ArcInfo coverages that were developed through a private-sector contractor using stereo plotting techniques and low altitude aerial photography. This data set was developed over a period of three years using aerial photography taken from 1980's through early 1990's, and it supports projects and functions at SJRWMD that could involve the use of detailed topographic information such as field-scale hydrological modelling, detailed environmental assessment, etc.

Caution: in areas containing recent development, this layer can be seriously out of date.

Purpose:

To support engineering applications, hydrological modeling, environmental assessment, and many other projects that require detailed topographic information.

Supplemental_Information:

This data layer was digitized from the one-foot section-size contour mylar maps developed from stereo models based on low altitude aerial photographs. All of the approximately 1100 section-size coverages were compiled and digitized under contract #92W289 (SJRWMD). For more information, see the SJRWMD Water Resources Department, Division of Engineering, contact: Kristina Hickey.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:

REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -82.750982

East_Bounding_Coordinate: -80.580310

North_Bounding_Coordinate: 30.338440

South_Bounding_Coordinate: 27.900154

Keywords:

Theme:

Theme_Keyword: topography

Theme_Keyword: elevation

Theme_Keyword: contours

Access_Constraints: None

Use_Constraints:

The St. Johns River Water Management District prepares and uses information for its own purposes and this information may not be suitable for other purposes. This information is provided "as is". Further documentation of this data can be obtained by contacting: St. Johns River Water Management District, Division of Integrated Application Systems, 4047 Reid Street, Palatka, Florida, 32177, (386) 329-4500.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Engineering Division, SJRWMD

Contact_Position: GIS Analyst

Contact_Address:

Address_Type: mailing address

Address: P.O. Box 1429

City: Palatka

State_or_Province: Florida

Postal_Code: 32178

Country: USA

Hours_of_Service: EST 8:00 AM - 5:00 PM

Security_Information:

Security_Classification_System: low

Security_Classification: Unclassified

Security_Handling_Description:

Caution users to be aware of problems and report any surprises back to data steward.

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535

Cross_Reference:

Citation_Information:

Originator: Engineering Division, SJRWMD, Palatka, Florida

Publication_Date: Unpublished Material

Publication_Time: Unknown

Title: one-foot topographiy

Geospatial_Data_Presentation_Form: vector digital data

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

No final accuracy check was made for this dataset. It defaults to the accuracy of the individual (TRS) sections.

Logical_Consistency_Report:

Individual (TRS) sections were quality-checked, but the assembled one has not been.

Completeness_Report: Coverage is sparse as the need for data by projects changes.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

No positional accuracy was checked and it is believed the positional accuracy is generally high because the linework matches well with the 1995 DOQ images and the line work was based on the low altitude aerial photography.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: Unknown

Lineage:

Source_Information:

Source_Scale_Denominator: 12000

Type_of_Source_Media: Aerial photography

Process_Step:

Process_Description:

A. Scanned through /englib/covs/one_ft_topo/... directories and identified all those section-size coverages that satisfied the following conditions: 1. Contain polygon topology 2. Contain line topology 3. Coverage name did NOT contain utm There were 1008 sections that satisfied those conditions.

B. For each of all those 1008 section-size coverages, the tolerance values were set to: Fuzzy 0.001 Verified Dangle 0.001 Verified Tic Match 0.001 Edit 0.001 Verified Node Snap 0.001 Verified Weed 0.001 Verified Grain 0.001 Verified Snap 0.001 Verified Database ID 0 Transaction ID 0 before a clean and/or build.

C. The 1008 small coverages were mapjoined to four larger coverages due to the fact that there is a limit (max 400 coverages at a time) to mapjoin. In addition, an item EDGE was added all those sections that did not contain one, and this item was set to (-9) to distinguish it from 0 or 1.

D. The larger coverages were each projected from State Plane to the UTM Zone 17 HPGN system (/gislib/amls/projection_files/sp27-utmhpgn.prj), then reset all the tolerance values to minimum or zero before a clean and build.

E. A final mapjoin was carried out from the larger and reprojected UTM coverages to create a master coverage sjr1ft.

F. Then the lines and polygons in the UTM coverage were inserted into SDE as separate layers of lines and polygons.

T19T26S29 T19R26S30 T19R26S31 T19R26S31 T20R26S29 T20R26S30 T20R26S31 T20R26S32 T20R25S02

T19R26S25 T19R26S28 T19R26S34 T19R26S36 T19R27S31 T20R26S03 T20R26S11 T20R26S12 T20R26S06

Process_Date: 11/16/2001

Process_Time: 00:00:00

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: GIS Division/Information Resources/SJRWMD

Contact_Person: Yurong Tan

Contact_Position: GIS Analyst

Contact_Address:

Address_Type: mailing address

Address: P. O. Box 1429

City: Palatka

State_or_Province: Florida

Postal_Code: 32178

Country: USA

Contact_Voice_Telephone: 386-329-4832

Contact_Electronic_Mail_Address: tany@sjrwmd.com

Hours_of_Service: EST 8:00 AM - 5:00 PM

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\Temp\xml2.tmp

Cloud_Cover: Unknown

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: polygon and line

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: 945985

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

Depth_System_Definition:

Depth_Datum_Name: Mean sea level

Depth_Resolution: Unknown

Depth_Distance_Units: feet

Depth_Encoding_Method: Implicit coordinate

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: GISLIB.TOPO_SJRWMD_LINE

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: C_TYPE

Attribute:

Attribute_Label: C_DESC1

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: C_DESC2

Attribute:

Attribute_Label: C_ELEV

Attribute:

Attribute_Label: C_LOW

Attribute:

Attribute_Label: EDGE

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

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

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Overview_Description:

Entity_and_Attribute_Overview:

The item C_ELEV stores the elevation value in feet for each contour. Values vary between -17 and 246. There are 218 records with negative values; all are in a single gravel pit in Clay County near Russell Landing, upstream of the mouth of Black Creek.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: St. Johns River Water Management District

Contact_Position: GIS Data Manager

Contact_Electronic_Mail_Address: gis_support@sjrwmd.com

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: www.sjrwmd.com

Metadata_Reference_Information:

Metadata_Date: 20060227

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Engineering Division, Water REsources Dept., SJRWMD

Contact_Person: Kristina Hickery

Contact_Position: GIS Analyst

Contact_Address:

Address_Type:

REQUIRED: The mailing and/or physical address for the organization or individual.

City: REQUIRED: The city of the address.

State_or_Province: REQUIRED: The state or province of the address.

Postal_Code: REQUIRED: The ZIP or other postal code of the address.

Contact_Voice_Telephone: 386-329-4336

Contact_Electronic_Mail_Address: kms@sjrwmd.com

Hours_of_Service: EST 8:00 AM - 5:00 PM

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: None

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: No restriction

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile