Contour Lines -Available in 50', 100', 250' & 500' intervals

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey (USGS), EROS Data Center
Originator:
Arizona State Land Department, Arizona Land Resources Information System
Publication_Date: 2004
Title: Contour Lines - Arizona Counties
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Phoenix, AZ
Publisher: Arizona State Land Department
Online_Linkage:
 
Description:
Abstract:
These datasets consists of shapefiles representing selected contour intervals for the State of Arizona. Datasets are available for 50',100, 250', and 500' intervals. Each file covers an Arizona county or part of a county and as a collection covers the entire state. The data were created by processing hillshade TIF files derived from the U.S. Geological Survey National Elevation Dataset. The processing produced ESRI formatted coverages for each county or part of a county. The U.S. Geological Survey has developed a National Elevation Dataset (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5-minute elevation data for the conterminous United States are the primary initial source data. In addition to the availability of complete 7.5-minute data, efficient processing methods were developed to filter production artifacts in the existing data, convert to the NAD83 datum, edge-match, and fill slivers of missing data at quadrangle seams. One of the effects of the NED processing steps is a much-improved base of elevation data for calculating slope and hydrologic derivatives. The specifications for the NED 1 arc second and 1/3 arc second data are - Geographic coordinate system, Horizontal datum of NAD83, except for AK which is NAD27, Vertical datum of NAVD88, except for AK which is NAVD29, Z units of meters.
Purpose:
The Data are created to serve as base information for use in GIS for a variety of planning and analysis purposes. These data do not represent a legal record. Geospatial elevation data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping, and visualization applications.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:
East_Bounding_Coordinate:
North_Bounding_Coordinate:
South_Bounding_Coordinate:
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD Parameter Keywords
Theme_Keyword: EARTH SCIENCE
Theme_Keyword: LAND SURFACE
Theme_Keyword: TOPOGRAPHY
Theme_Keyword: LANDFORMS
Theme_Keyword: TERRAIN ELEVATION
Theme_Keyword: 1-DEGREE DEM
Theme_Keyword: 2-ARC-SECOND DEM
Theme_Keyword: 7.5-MINUTE DEM
Theme_Keyword: CARTOGRAPHY
Theme_Keyword: DEM
Theme_Keyword: DIGITAL ELEVATION MODEL
Theme_Keyword: DIGITAL MAPPING
Theme_Keyword: EDC
Theme_Keyword: EROS
Theme_Keyword: GEODATA
Theme_Keyword: GIS
Theme_Keyword: MAPPING
Theme_Keyword: RASTER
Theme_Keyword: USGS
Place:
Place_Keyword_Thesaurus: GCMD Location Keywords
Place_Keyword: ARIZONA
Access_Constraints:
Access is granted to public agencies, educational institutions, non-profit organizations and private individuals for non-commercial purpose. For commercial use of the data see Arizona Revised Statutes 39-121.03
Use_Constraints:
The Arizona State Land Department makes no warranties, implied or expressed, with respect to the accuracy of and the use of this data for any specific purpose. Users are required to make their own assessment of the data for any specific use. Not for use at scales greater than 1:100,000.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Arizona State Land Department, Arizona Land Resources Information System
Contact_Person: GIS Data Transfer Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 1616 West Adams
City: Phoenix
State_or_Province: AZ
Postal_Code: 85007
Country: USA
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: UNKNOWN
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: UNKNOWN
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: UNKNOWN
Lineage:
Process_Step:
Process_Description:
The 1/3rd Arc Second National Elevation Datasets in ESRI GRID format obtained from USGS were projected from Geographic, decimal degrees, NAD83 to UTM meters, zone 12, NAD83-HARN using the ARC PROJECT GRID routine with the BILINEAR option. The output grids were resampled to a constant cell size of 10m using the ARC LATTICERESAMPLE routine. A clipping polygon was created using the COUNTY boundary. The output grids were clipped with this county polygon boundary using the ARC LATTICECLIP routine. In cases where two or more output grids intersected the clipping polygon, they were merged into a larger grid using the ARC LATTICEMERGE routine. In cases where the resulting size of the output county grid exceeded the software limits, it had to be subdivided into two or more sections. The ARC LATTICECONTOUR routine was run on the output grid to create the contour covers. A contour interval of 15.24 meters with a weed tolerance of 2 meters were chosen to make the 50 foot contours. A contour interval of 30.48 meters with a weed tolerance of 2 meters were chosen to make the 100 foot contours. The item METERS shows the elevation in meters. A second item named FEET was added to show the elevation in feet. The computation was based on the conversion factor FEET = METERS / 0.3048 A third item named INTERVAL was added to mark every 5th contour. The ARC RESELECT routine was used to create the 250 feet contours from the 50 feet contours. The ARC RESELECT routine was used to create the 500 feet contours from the 100 feet contours.
Process_Date: 2004
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation:
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: c:\Temp\xml15D.tmp
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
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: 74362
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: -111.000000
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: 0.001024
Ordinate_Resolution: 0.001024
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
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: apache
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: FNODE_
Attribute_Definition: Internal node number for the beginning of an arc (from-node).
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: TNODE_
Attribute_Definition: Internal node number for the end of an arc (to-node).
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: LPOLY_
Attribute_Definition: Internal node number for the left polygon.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: RPOLY_
Attribute_Definition: Internal node number for the right polygon.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: LENGTH
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: APACHE1_
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: APACHE1_ID
Attribute_Definition: User-defined feature number.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: METERS
Attribute_Definition: Contour elevation in meters
Attribute:
Attribute_Label: FEET
Attribute_Definition: Contour elevation in feet (Integer Values)
Attribute:
Attribute_Label: INTERVAL
Attribute_Definition: Code to distinguish between the 50/250 feet contour lines
Attribute:
Attribute_Label: Interval_
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Person: GIS Data Transfer Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 1616 West Adams
City: Phoenix
State_or_Province: AZ
Postal_Code: 85007
Country: United States
Contact_Voice_Telephone: (602) 542-2606
Contact_Facsimile_Telephone: (602) 542-2600
Contact_Electronic_Mail_Address: gisdata@land.az.gov
Hours_of_Service: Monday-Friday, 8 AM - 5 PM, Mountain Standard Time
Resource_Description: National Elevation Dataset (NED)
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 50.557
Metadata_Reference_Information:
Metadata_Date: 20060711
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Contact_Person: GIS Data Transfer Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 1616 West Adams
City: Phoenix
State_or_Province: AZ
Postal_Code: 85007
Country: USA
Contact_Voice_Telephone: (602) 542-2606
Contact_Facsimile_Telephone: (602) 542-2600
Contact_Electronic_Mail_Address: gisdata@land.az.gov
Hours_of_Service: Monday-Friday, 8 AM - 5 PM, Mountain Standard Time
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
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.6 on Tue Jul 11 15:02:29 2006