10 Meter Lattices for Arizona Counties

Metadata:

• Identification_Information
• Data_Quality_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey (USGS), EROS Data Center

Publication_Date: 2004

Title: Lattice - 10 meter

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Phoenix, AZ

Publisher: Arizona State Land Department

Description:

Abstract:

This dataset consists of a set of 27 ESRI formatted GRID datsets representing elevations in meters for the state of Arizona. Each file covers an Arizona county or part of a county and as a collection cover the entire state. The data were created by processing the U.S. Geological Survey National Elevation Dataset. The processing produced ESRI formatted lattices (GRIDs) 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:

Calendar_Date:

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

Currentness_Reference:

REQUIRED: The basis on which the time period of content information is determined.

Status:

Progress: REQUIRED: The state of the data set.

Maintenance_and_Update_Frequency:

REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:

REQUIRED: Western-most coordinate of the limit of coverage expressed in longitude.

East_Bounding_Coordinate:

REQUIRED: Eastern-most coordinate of the limit of coverage expressed in longitude.

North_Bounding_Coordinate:

REQUIRED: Northern-most coordinate of the limit of coverage expressed in latitude.

South_Bounding_Coordinate:

REQUIRED: Southern-most coordinate of the limit of coverage expressed in latitude.

Keywords:

Theme:

Theme_Keyword_Thesaurus:

REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.

Theme_Keyword:

REQUIRED: Common-use word or phrase used to describe the subject of the data set.

Access_Constraints:

REQUIRED: Restrictions and legal prerequisites for accessing the data set.

Use_Constraints:

REQUIRED: Restrictions and legal prerequisites for using the data set after access is granted.

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535

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 resultant size of the output county grid exceeded the software limits, it had to be subdivided into two or more sections.

Process_Date: 2004

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\ccoates\LOCALS~1\Temp\xml19.tmp

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Arizona State Land Department, Arizona Land Resource 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: 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)

Distribution_Liability:

Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, EROS Data Center, no warranty expressed or implied is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The USGS will warrant the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site.

Standard_Order_Process:

Fees:

Public agencies can utilize the data for cost of media only and no charge for internet downloads. Commercial entities can obtain a cost waiver for contract work for public agencies. Fees will be assessed for purely commercial use of the data.

Technical_Prerequisites:

ESRI software or software compatible with ESRI file formats.

Metadata_Reference_Information:

Metadata_Date: 2004

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Arizona State Land Department, Arizona Land Resource 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

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