Contours (1:24,000) for any County, Mississippi - 2014
Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Mississippi Automated Resource Information System (MARIS)
Publication_Date: 2014
Title:
Contours (1:24,000) for (any) County, Mississippi - 2014
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: http:\\www/maris.state.ms.us/DownloadData/Contours.html
Description:
Abstract:
Mississippi 1:24,000 USGS topographic hypsography contours. Contour intervals are 5, 10, or 20 feet depending on the area of the state. Supplemental contours (where applicable) are 5 or 10 feet. **** Note: During September 2014, MARIS staff reevaluated all county contour files. The TYPE attribute was checked to make sure coding was correct for 1- Index, 2 – Intermediate, and 3 – Supplemental. During this process, edits were also made for any errors in elevation that were easily recognized. A statewide file is now available along with a Map Service for this layer. **********
Purpose:
Provide 1:24,000 contours by county for use in generating 10 m DEMS
Supplemental_Information:
The information in this file is the same for all counties. Only the bounding coordinates have changed. Note: In creating this layer for use in the development of a hydrologically correct Digital Elevation Model, additional contour lines were occasionally added and some values of elevations were coded differently from the quadrangle maps. This occurred where the quadrangle maps provided insufficient data to generate a smooth model.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1964
Ending_Date: 1996
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -89.512180
East_Bounding_Coordinate: -89.012699
North_Bounding_Coordinate: 33.745019
South_Bounding_Coordinate: 33.454329
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: contour
Theme_Keyword: elevation
Theme_Keyword: hypsography
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Mississippi
Place_Keyword: USA
Access_Constraints: none
Use_Constraints:
Data users are encouraged to read this metadata record to better comprehend and utilize the described data set. MARIS should be recognized as a source data provider on all data derived from this data set. The data are not survey products and not intended for legal use.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Mississippi Automated Resource Information System (MARIS)
Contact_Person: Steve Walker
Contact_Position: GIS Operations Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
3825 Ridgewood Road
City: Jackson
State_or_Province: MS
Postal_Code: 39211-6453
Country: USA
Contact_Voice_Telephone: (601) 432-6149
Contact_Facsimile_Telephone: (601) 432-6893
Contact_Electronic_Mail_Address: swalker@ihl.state.ms.us
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribute values were validated via cross-checks with existing data resources including photographs, maps, imagery, and scientific reports.
Logical_Consistency_Report:
All line work is checked for topological integrity and to ensure that polygons are fully enclosed, no duplicate lines or points exists, line segments are composed of sequentially numbered coordinate pairs, intersecting lines are separated by a node, and no dangling lines exist. Topological checks and structuring are performed using the ArcInfo software. Data dictionary specifications are automatically implemented via the ESRI Info database management software. Data collected from external data providers are randomly verified.
Completeness_Report:
The data are complete with respect to the data publication date and scale.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Feature locations were validated via cross-checks with existing data resources including photographs, maps, imagery, and scientific reports.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1996
Title:
Elevation Contour Mylar Separates / Hypsography
Geospatial_Data_Presentation_Form: map
Source_Scale_Denominator: 24000
Type_of_Source_Media: stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1964
Ending_Date: 1996
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Elevation Contours/Hypsography
Source_Contribution:
Primary Source of data
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2002
Title:
Digital Raster Graphics
Geospatial_Data_Presentation_Form: raster digital data
Source_Scale_Denominator: 24000
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1996
Ending_Date: 2002
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
DRGs
Source_Contribution:
Digital source to verify elevation values in feet msl from the topographic maps
Source_Information:
Source_Citation:
Citation_Information:
Originator: MARIS
Publication_Date: 2006
Title:
County Border
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details:
This data was generated by moving 1990 TIGER files to match the 1:24,000 DRG borders.
Online_Linkage: http://www.maris.state.ms.us
Source_Scale_Denominator: 24000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2007
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
County Border
Source_Contribution:
Used in clipping the digital elevation model
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2001
Title:
NED DEM
Geospatial_Data_Presentation_Form: raster digital data
Source_Scale_Denominator: 24000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2001
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
National Elevation Dataset 30 meter Digital Elevation Model
Source_Contribution:
Used to compare the elevation values of the new 10 meter DEMs
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Department of Agriculture
Publication_Date: 2006
Title:
National Agricultural Inventory Program - 2006
Geospatial_Data_Presentation_Form: remote-sensing image
Source_Scale_Denominator: 24000
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2006
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
NAIP
Source_Contribution:
The 2006 NAIP data was used in some situations where the NHD dataset did not match the contour line work. The aerial photography was used to help edit the contour line work and NHD line work to more closely match the actual hydrography on the ground
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1996
Title:
Topographic Maps
Geospatial_Data_Presentation_Form: map
Source_Scale_Denominator: 24000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1964
Ending_Date: 1996
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
1:24,000 Topographic Maps
Source_Contribution:
Used in original coding of elevations.
Process_Step:
Process_Description:
The 1:24,000 contour Mylar separates were scanned at 1000 dpi. They were brought into Hitachi's Cad/Core software to vectorize. The .tic and .lin files generated from Cad/Core were brought into a blank UTM coverage for transformation. The file was then projected into the MSTM projection. The lines were then cleaned and dangles corrected. The lines were then coded for elevation, contour type, and depression/hilltop using the separates and the paper 1:24,000 topographic maps. The quads that make up a county were then appended and clipped using a one mile buffer of the county border.
Source_Used_Citation_Abbreviation:
Contours
Source_Used_Citation_Abbreviation:
Topo Maps
Process_Date: 2004
Process_Step:
Process_Description:
The existing 1:24,000 contour quadrangle vector coverages were converted into vector shapefiles. The contours for a county were appended. A 400 meter county border buffer was created. The contours for a county were clipped on this 400 meter buffer to ensure a smooth model at the border. Using the 3-D Analyst Topo-to-Raster command, a 10 meter digital elevation model (DEM) was generated. The resulting DEM was inspected for anomalies using a visual inspection in ArcMap of the grey-scaled image. Breaks in the contour lines between the quadrangles were edge matched. Any elevation value discrepancies were also fixed and/or addressed at these areas. A new DEM was generated and clipped on the county border (with a 10 meter buffer to ensure a smooth mosaic with surrounding counties). The resulting DEM was compared with the established USGS National Elevation Dataset (NHD) 30 Meter DEM. Using the Spatial Analyst MINUS command, a difference GRID was generated. This was used to find extreme elevation differences between the 30 meter DEM and the new 10 meter DEM. Errors in elevation were verified using the DRGs, changes made, and a new DEM generated. Using the 3-D Analyst HillShade command, a 3-D surface was generated. Overlaying the NHD line work and polygons, visual inspection was made by MARIS staff to check for spikes, dips, and other discrepancies in the model. Potential errors in the elevations were then verified or discounted using the DRGs as a background layer. There were instances where the NHD was edited to more correctly match the 2006 NAIP aerial photography. This was in situations where the NHD dataset conflicted with both the contour line work and the imagery in a severe manner. Once this process was complete, a new 10 meter DEM was generated using the contour file, NHD stream and polygonal water bodies, and 1:24,000 county border file as input into the 3-D Analyst Topo-to-Raster command. Both the DEM and the contour vector file were sent to USGS/NGTOC III for inspection. Their staff performed a QA review of the data for completeness and accuracy in topographic characterization. In addition, a statistical sampling of vertical accuracy was performed by USGS/NGTOC III to ensure the vertical accuracy was met. Any deficiencies/errors noted in a given county data set was returned to MARIS via x,y coordinates and a description of each error. These changes to the contour shapefile were made by MARIS staff and a new DEM generated. This procedure continued until inspection of the DEM resulted in a few errors in elevation values in a county. At that point, those changes were made and the final 10 meter DEM was generated. The data was then readied for publication on the MARIS web site as well as distributed to the USGS for possible inclusion in the NED system. **** Note: During September 2014, MARIS staff reevaluated all county contour files. The TYPE attribute was checked to make sure coding was correct for 1- Index, 2 – Intermediate, and 3 – Supplemental. During this process, edits were also made for any errors in elevation that were easily recognized. A statewide file is now available along with a Map Service for this layer. **********
Source_Used_Citation_Abbreviation:
DRGs
Source_Used_Citation_Abbreviation:
County Border
Source_Used_Citation_Abbreviation:
NAIP
Process_Date: 2007, 2014
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference_Method:
FIPS = 28 (Mississippi)
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: 13941
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999834
Longitude_of_Central_Meridian: -89.750000
Latitude_of_Projection_Origin: 32.500000
False_Easting: 500000.000000
False_Northing: 1300000.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000001
Ordinate_Resolution: 0.000001
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: cont<FIPS>
Entity_Type_Definition:
1:24,000 contours by county
Entity_Type_Definition_Source:
MARIS
Attribute:
Attribute_Label: FID
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: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: LENGTH
Attribute_Definition:
Length of segment in meters
Attribute_Definition_Source:
ESRI, MARIS
Attribute_Domain_Values:
Unrepresentable_Domain:
measurement
Attribute:
Attribute_Label: ELEVATION
Attribute_Definition:
Elevation of segment in feet
Attribute_Definition_Source:
USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 900
Attribute_Units_of_Measure: feet
Attribute:
Attribute_Label: TYPE
Attribute_Definition:
Type of contour
Attribute_Definition_Source:
USGS, MARIS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Index contour
Enumerated_Domain_Value_Definition_Source:
USGS, MARIS
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition:
Intermediate contour
Enumerated_Domain_Value_Definition_Source:
USGS, MARIS
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition:
Supplemental contour
Enumerated_Domain_Value_Definition_Source:
USGS, MARIS
Attribute:
Attribute_Label: DEPORHL
Attribute_Definition:
Depression or hilltop
Attribute_Definition_Source:
USGS, MARIS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition:
Hilltop
Enumerated_Domain_Value_Definition_Source:
USGS, MARIS
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Depression
Enumerated_Domain_Value_Definition_Source:
USGS, MARIS
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steve Walker
Contact_Organization: Mississippi Automated Resource Information System (MARIS)
Contact_Position: GIS Operations Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
3825 Ridgewood Road
City: Jackson
State_or_Province: MS
Postal_Code: 39211-6453
Country: USA
Contact_Voice_Telephone: 601.432.6149
Contact_Facsimile_Telephone: 601.432.6893
Contact_Electronic_Mail_Address: swalker@ihl.state.ms.us
Hours_of_Service: 8:00 a.m. - 4:00 p.m. CST
Resource_Description: Countywide Elevation grid for Mississippi
Distribution_Liability:
The information contained in this catalog and data distributed by the Board of Trustees / Institutions of Higher Learning's MARIS Technical Center (MTC) is derived from a variety of public and private sector sources considered to be dependable, but the accuracy, completeness, and currency thereof are not guaranteed. The IHL/MTC makes no warranties, expressed or implied as to the accuracy, completeness, currency, reliability, or suitability for any particular purpose of information or data contained in or generated from the state geographic database. Additionally, the State of Mississippi, the Board of Trustees for IHL or any employee thereof assume no liability associated with the use of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE (ArcInfo export ), ArcGIS (shapefile)
File_Decompression_Technique: TAR, WinZip
Transfer_Size: 21.736
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://www.maris.state.ms.us/Data_Warehouse/Download_Data/download_data.html
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: CD Write
Fees: Direct downloads and CDs of standard MARIS products are available free of charge
Metadata_Reference_Information:
Metadata_Date: 20070927
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Mississippi Automated Resource Information System (MARIS)
Contact_Person: Steve Walker
Contact_Position: GIS Operations Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
3825 Ridgewood Road
City: Jackson
State_or_Province: MS
Postal_Code: 39211-6453
Country: USA
Contact_Voice_Telephone: (601) 432-6149
Contact_Facsimile_Telephone: (601) 432-6893
Contact_Electronic_Mail_Address: swalker@ihl.state.ms.us
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_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile