dem_ft

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography & Geospatial Center
Publication_Date: 2004
Title: dem_ft
Edition: 1
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: USGS OFR 2004-1032
Publication_Information:
Publication_Place: Rapid City, South Dakota
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.water.usgs.gov/ofr2004-1032/>
Larger_Work_Citation:
Citation_Information:
Originator:
U.S. Dept. of Ag., Natural Resources Conservation Services, National Cartography and Geospatial Center
Title: National Elevation Dataset 1-degree Tiles
Edition: 1
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Fort Worth, Texas
Publisher: National Cartography & Geospatial Center
Description:
Abstract:
The dataset, dem_ft, is 30-meter resolution Digital Elevation Model (DEM) for the area with the historic Yankton Sioux Reservation boundary in eastern Charles Mix County, South Dakota. The data for 2 one-degree blocks (lower right of 1: latitude 42 degrees/longitude 98 degrees and 2: latitude 43 degrees/longitude 99 degrees) were downloaded, merged, and clipped to the area within the historic Yankton Sioux Reservation boundary. The elevation values were converted from meters to feet. The minimum value is 1,210.69 feet. The maximum value is 1,943.89 feet. The mean value is 1,523.44 feet.

The U.S. Geological Survey has developed a National Elevation Database (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 USDA Natural Resources Conservation Service has taken this data from Geographic projection, NAD83, and converted it into UTM, NAD83. NED has been tiled into one degree blocks and remains seamless from one degree east and one degree west of any UTM zone break. Included within any gzip file is the ArcInfo elevation grid, ArcView metadata shapefile, enhanced 10-meter shaded relief as a bil image, and the 10-meter shaded relief in tif format.

Purpose:
This grid was prepared to assist the Yankton Sioux Tribe with the development of a pesticide management plan.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: unknown
Ending_Date: unknown
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -98.682830
East_Bounding_Coordinate: -98.066162
North_Bounding_Coordinate: 43.373088
South_Bounding_Coordinate: 42.836245
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
Theme_Keyword: NRCS
Theme_Keyword: NCGC
Theme_Keyword: Gateway Lighthouse
Place:
Place_Keyword:
historic Yankton Sioux Reservation, Charles Mix County, South Dakota
Place_Keyword:
Place_Keyword:
Access_Constraints: None
Use_Constraints:
None. Acknowledgement of the originating agencies would be appreciated in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Bryan Schaap
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing and physical address
Address: 111 Kansas Ave SE
Address:
Address:
City: Huron
State_or_Province: South Dakota
Postal_Code: 57350
Country: United States
Contact_Voice_Telephone: 605-352-4241
Contact_Facsimile_Telephone: 605-352-4304
Contact_Electronic_Mail_Address: bdschaap@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:
Logical_Consistency_Report: Not Applicable.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey (USGS), EROS Data Center
Publication_Date: Unknown
Title: National Elevation Dataset
Online_Linkage: <http://edcnts12.cr.usgs.gov/ned/ned.html>
Type_of_Source_Media: FTP download
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: unknown
Ending_Date: unknown
Source_Citation_Abbreviation: NED
Source_Contribution:
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.
Process_Step:
Process_Description:
After the National Elevation Dataset (NED) was aquired from the U.S. Geological Survey (USGS) it was clipped into one degree Geographic, NAD83 blocks. For each one degree block, the eight adjacent one degree blocks were mosaic together if available. After the mosaic was finished, it was reprojected into UTM, NAD83. If the block fell within one degree of an UTM zone break, it was then reprojected into both zones along the zone break. A corresponding ArcInfo metadata coverage provides the geographical extent for each tile with the history of the digital elevation data for all the 7.5 minute quads that make-up that one-degree block. The ArcInfo metadata coverage was not mosaicked to the neighboring blocks, but was reprojected to the same UTM zone as the elevation grid. A separate folder was created for each one degree block at this time.

After reprojection, the mosaic was clipped using the extents of the reprojected ArcInfo coverage, thereby creating a full one degree block without any null data areas. This allows the clipped elevation grid to be seamless with adjacent clipped NED blocks that have been processed in this way. After clipping the elevation grid, a shaded relief was created using the default settings in ArcInfo. The shaded relief was then converted into a tif image. A new field was created in the polygon attribute table called "NRCSDATE" that provides the date at which the NED tile was processed at the National Cartography & Geospatial Center. The metadata coverage was then converted into an ESRI ArcView shapefile.

The elevation grid and shaded relief grid were merged into one grid, thereby creating a new enhanced grid to highlight elevation differences. This enhanced grid was resampled to 10-meters and converted to integer values. It was then converted into a grid stack before creating a shaded relief bil image. This new enhanced 10-meter bil image allows for a larger map scale then would be available with the 30-meter shaded relief tif. The drawback is the much larger file size of the 10-meter bil.

Finally, each one degree block folder with contents including the elevation ArcInfo grid, metadata ArcView shapefile, enhanced 10-meter shaded relief bil, and 30-meter tif shaded relief was then tarred and gzipped.

Process_Date: Refer to ArcView shapefile attribute table
Process_Step:
Process_Description: Metadata imported.

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 1975
Column_Count: 1658
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 14
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -99.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 30.000000
Ordinate_Resolution: 30.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.400000
Denominator_of_Flattening_Ratio: 294.978698

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
ArcInfo Grid - Cell Size: one arc-second Data type: floating point Number of Rows: varies Number of Lines: varies Projection: UTM Datum: NAD83 Horizontal Units: meters Zunits: meters

ArcView Shapefile - Three File Types: .dbf. shp. shx

Shaded Relief - bil, hdr, stx, prj, and blw

Shaded Relief - tif and tfw files

ned_metadata.xml ned_metadata.html ned_readme.txt USGS_NED_factsheet.pdf

Entity_and_Attribute_Detail_Citation:
U.S. Department of the Interior, U.S. Geological Survey, 1998, Standards for Digital Elevation Models: Reston, VA.

Softcopy in Adobe Acrobat Portable Document File (PDF) format: <http://rockyweb.cr.usgs.gov/nmpstds/demstds.html>


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Address:
Address:
Address:
Resource_Description: National Elevation Dataset (NED)
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Department of Agriculture, no warranty expressed or implied is made by the Agency regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The U.S. Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets. The U.S. Department of Agriculture prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status. (Not all prohibited bases apply to all programs.)
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 13.564
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Offline_Option:
Recording_Capacity:
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown

Metadata_Reference_Information:
Metadata_Date: 20040312
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Bryan Schaap
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing and physical address
Address: 111 Kansas Ave SE
Address:
Address:
City: Huron
State_or_Province: South Dakota
Postal_Code: 57350
Country: USA
Contact_Voice_Telephone: 605-352-4241
Contact_Facsimile_Telephone: 605-352-4304
Contact_Electronic_Mail_Address: bdschaap@usgs.gov
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 2.7.33 on Fri Mar 12 14:07:50 2004