Pulaski County 2010 - 2011 2 foot contours


Tags
Pulaski County, Arkansas, Elevation, Contours


Summary

The purpose of this contour data is provide a high accuracy elevation vector dataset with 3D geometry that may be used with GIS or CAD software for Engineering Planning, 3D modeling, 3D visualization, cartography and associated applications.  The contours were generated from LiDAR data originally collected in 2010 and 2011 for the Federal Emergency Management Agency (FEMA) Map Modernization Program and Risk Map Program.  The verical datum is NAVD1988.

The purpose of this LiDAR data was to produce high accuracy 3D elevation products, including tiled LiDAR in LAS 1.2 format, 3D breaklines, terrain dataset, 2 ft contours, and 5 ft cell size hydro flattened Digital Elevation Models (DEMs).

Description

            

This dataset consists of 2 foot interval contour lines with ground elvation contained in the 3D geometry attribute data. Fugro EarthData, Inc collected LiDAR for approximately 714 square miles at 1.0 points per square meter (1.0m GSD) for the FEMA project area the southeast portion of Pulaski County in 2010, and most of the remaining part of the County in 2011. The extreme northeastern part of Pulaski County (essentially north of Highay 89 was not collected. Dewberry used proprietary procedures to classify the LAS according to project specifications: 1-Unclassified, 2-Ground, 7-Noise, 9-Water, 10-Ignored Ground, 11-Withheld Points. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro flattened DEMs for the 199 tiles (10,000 ft x 10,000 ft) that cover the project area. The contour data was generated from the bare earth DEM and DTM data.

Credits

Federal Emergency Managment Agency (FEMA), Pulaski Area GIS (PAgis), Central Arkansas Water, City of Jacksonville, City of Little Rock, City of North Little Rock, City of Sherwood, Little Rock Wastewater, North Little Rock Wastewater, Pulaski County Public Works, Arkansas National Guard / Camp Robinson, and the United State Geological Survey (USGS).

Use limitations

            

This data was produced for the USGS according to specific project requirements. This information is provided "as is". Further documentation of this data can be obtained by contacting: USGS/NGTOC, 1400 Independence Road, Rolla, MO 65401. Telephone (573) 308-3700.

Extent

West  -92.765635    East  -92.028404
North  34.962023    South  34.486212

Scale Range
Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:150,000,000

ArcGIS Metadata 

Topics and Keywords 

Themes or categories of the resource  elevation


Content type  Downloadable Data


Place keywords  Pulaski County, Arkansas, Lonoke County, Arkansas, Faulkner County, Arkansas, Saline County, Arkansas, Perry County, Arkansas

Theme keywords  Elevation, Lidar, LAS, Contours, DEM, Hydro Flattened, DTM, Breaklines

Citation 

Title Pulaski County 2010 - 2011 2 foot contours
Publication date 2012-02-01
Indeterminate time unknown


Presentation formats* digital map
FGDC geospatial presentation format  Vector Data


Citation Contacts 

Responsible party
Organization's name U.S. Geological Survey
Contact's role  originator


Resource Details 

Dataset languages  English (UNITED STATES)


Status  completed
Spatial representation type  vector


Supplemental information
A complete description of this dataset is available in the Final Project Report submitted to the USGS.

Processing environment Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 10.0


Credits
Federal Emergency Managment Agency (FEMA), Pulaski Area GIS (PAgis), Central Arkansas Water, City of Jacksonville, City of Little Rock, City of North Little Rock, City of Sherwood, Little Rock Wastewater, North Little Rock Wastewater, Pulaski County Public Works, Arkansas National Guard / Camp Robinson, and the United State Geological Survey (USGS).

ArcGIS item properties
*Name Contours_2ft_2010_2011
*Location file://\\cm-sas-gis-01\FileShare\Temp\PAgis\Contours_2ft.gdb
*Access protocol Local Area Network

Extents 

Extent
Description
ground condition

Temporal extent
Beginning date 2010-12-27
Ending date 2011-01-27

Vertical extent
*Minimum value 172.000000
*Maximum value 1108.000000


Extent
Geographic extent
Bounding rectangle
West longitude -92.765638
East longitude -92.070326
South latitude 34.574162
North latitude 34.962009

Vertical extent
*Minimum value 172.000000
*Maximum value 1108.000000


Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -92.765635
*East longitude -92.028404
*North latitude 34.962023
*South latitude 34.486212
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude 1082915.346039
*East longitude 1303772.760294
*South latitude 56533.689507
*North latitude 228833.817019
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Organization's name USGS
Contact's position USGS NGTOC
Contact's role  point of contact


Contact information
Phone
Voice (573) 308-3587

Address
Type both
Delivery point 1400 Independence Road
City Rolla
Administrative area MO
Postal code 65401
Country US
e-mail addresspemmett@usgs.gov



Resource Maintenance 

Resource maintenance
Update frequency  as needed


Resource Constraints 

Legal constraints
Limitations of use
This data was produced for the USGS according to specific project requirements. This information is provided "as is". Further documentation of this data can be obtained by contacting: USGS/NGTOC, 1400 Independence Road, Rolla, MO 65401. Telephone (573) 308-3700.

Constraints
Limitations of use
                  

This data was produced for the USGS according to specific project requirements. This information is provided "as is". Further documentation of this data can be obtained by contacting: USGS/NGTOC, 1400 Independence Road, Rolla, MO 65401. Telephone (573) 308-3700.


Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_StatePlane_Arkansas_North_FIPS_0301_Feet
*Coordinate reference details
Projected coordinate system
Well-known identifier 102651
X origin -122328300
Y origin -93908400
XY scale 3048.0060960121914
Z origin -701.70181974999969
Z scale 4194304001953.124
M origin -100000
M scale 10000
XY tolerance 0.0032808333333333335
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 3433
Well-known text PROJCS["NAD_1983_StatePlane_Arkansas_North_FIPS_0301_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1312333.333333333],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-92.0],PARAMETER["Standard_Parallel_1",34.93333333333333],PARAMETER["Standard_Parallel_2",36.23333333333333],PARAMETER["Latitude_Of_Origin",34.33333333333334],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",3433]],VERTCS["NAVD_1988",VDATUM["North_American_Vertical_Datum_1988"],PARAMETER["Vertical_Shift",0.0],PARAMETER["Direction",1.0],UNIT["Foot_US",0.3048006096012192]]

Reference system identifier
*Value 3433
*Codespace EPSG
*Version 8.2.6


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name Contours_2ft_2010_2011
*Object type  composite
*Object count 146411



ArcGIS Feature Class Properties
Feature class name Contours_2ft_2010_2011
*Feature type Simple
*Geometry type Polyline
*Has topology FALSE
*Feature count 146411
*Spatial index TRUE
*Linear referencing FALSE



Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Conceptual consistency
Measure description
Data covers the tile scheme provided for the project area.





Data quality report - Completeness omission
Measure description
A visual qualitative assessment was performed to ensure data completeness and full tiles. Two data voids exist within the USGS PAgis V13 LiDAR project area. One occurrs in delivered tile 15WU1622 and is approximately 0.13 square miles. The second occurs in delivered tile 15WU2116 and is approximately 0.13 square miles. Dewberry would normally ensure that tiles within the project boundary contain data to the full extent of each tile and gaps in the data at the project boundary would be unacceptable but, as noted in the Task Order, Dewberry was not tasked with the LiDAR acquisition for the project area.





Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
The contours are derived from a surface generated from the source LiDAR and 3D breaklines created from the LiDAR. Horizontal accuracy is not performed on the contours, breaklines, or source LiDAR. Lidar source compiled to meet 3.28 foot (1 meter) horizontal accuracy.



Quantitative test results
Value 3.28 feet


Evaluation method
PAgis was flown as part of a FEMA LiDAR project. The contours are derived from a surface generated from the source LiDAR and 3D breaklines created from the LiDAR. Horizontal accuracy is not performed on the contours, breaklines, or source LiDAR. LiDAR vendors perform calibrations on the LiDAR sensor and compare data to adjoing flight lines to ensure LiDAR meets the 3.28 ft (1 meter) horizontal accuracy standard at the 95% confidence level. Please see the final project report delivered to the USGS for more details.





Data quality report - Absolute external positional accuracy
Dimension vertical


Measure description
The contours are derived from a surface generated from the source LiDAR and 3D breaklines created from the LiDAR. Vertical accuracy is not tested on the contours. The vertical accuracy of the LiDAR recently processed by Dewberry was tested with the 83 independent survey checkpoints. The survey checkpoints were evenly distributed throughout the project area and were located in 4 land cover catagories; high grass (22), forest (20), urban (20), and open terrain (21). Checkpoints in open terrain were used to compute the Fundamental Vertical Accuracy (FVA). Project specifications required a FVA of 0.80 ft (24.5 cm) based on a RMSEz x 1.9600. All checkpoints were used to compute the Consolidated Vertical Accuracy (CVA). Project specifications required a CVA of 1.19 ft based on the 95th percentile.



Quantitative test results
Value 0.26 ft


Evaluation method
The contours are derived from a surface generated from the source LiDAR and 3D breaklines created from the LiDAR. Vertical accuracy is not tested on the contours. PAgis was flown as part of a FEMA LiDAR project. Please see the final project report delivered to the USGS for more details. Based on the vertical accuracy testing conducted by Dewberry, using NSSDA and FEMA methodology, vertical accuracy at the 95% confidence level (called Accuracyz) is computed by the formula RMSEz x 1.9600. The dataset for the project satisfies the criteria: The recently processed Lidar dataset for PAgis tested 0.26 ft (7.9 cm) vertical accuracy at 95% confidence level in open terrain, based on RMSEz (0.13 ft/3.96 cm) x 1.9600. Based on the vertical accuracy testing conducted by Dewberry, using NDEP and ASPRS methodology, consolidated vertical accuracy at the 95% confidence level is computed using the 95th percentile method. The dataset for the project satisfies the criteria: Lidar dataset for PAgis tested 0.28 ft (8.5 cm) vertical accuracy at 95% confidence level in all land cover categories combined.





Lineage 

Process step
When the process occurred 2011-01-27
Description
Data for the PAgis LiDAR project was acquired by Fugro EarthData, Inc. LiDAR collected at 1.0 points per square meter (1.0m GSD) for the Pulaski County Arkansas covering or portions of Pulaski and Faulkner Counties AR. This area was flown during snow free and leaf-off conditions. Fugro EarthData, Inc. flew and collected the LiDAR data. The project area requires LiDAR to be collected on average of 1.0 meter point spacing or better and vertical accuracy of 12.5 centimeters RMSE. Classified LAS were tested by Fugro EarthData for both vertical and horizontal accuracy. All data are seamless from one tile to the next. TerraSurv under contract to Fugro EarthData, Inc. successfully established ground control for the Pulaski AOI. A total of 26 ground control points in the Pulaski AOI were acquired. GPS was used to establish the control network. The horizontal datum was the North American Datum of 1983, 2007 adjustment (NAD83/2007). The vertical datum was the North American Vertical Datum of 1988 (NAVD88). The Fugro EarthData, Inc. acquisition team collected ALS60 derived lidar over the Pulaski AOI in the State of Arkansas with a 1m, nominal post spacing using a Piper Navajo aircraft. The collection for the entire project area was accomplished from December 27, 2011 through January 27, 2011. The collection was performed using a Leica ALS60 MPiA lidar system, serial numbers ALS142 and ALS113, including an inertial measuring unit (IMU) and a dual frequency GPS receiver. This project required 5 lifts of flight lines to be collected. The lines were flown at an average of 6,000 feet above mean terrain using a maximum pulse rate frequency of 123,700 Hz. The sensor had a 34 degree FOV and a scan rate of 40. 1. Lidar, GPS, and IMU data was processed together using lidar processing software. 2. The lidar data set for each flight line was checked for project area coverage and lidar post spacing was checked to ensure it meets project specifications. 3. The lidar collected at the calibration area and project area were used to correct the rotational, atmospheric, and vertical elevation differences that are inherent to lidar data. 4. Intensity rasters were generated to verify that intensity was recorded for each lidar point. 5. Lidar data was transformed to the specified project coordinate system. 6. By utilizing the ground survey data collected at the calibration site and project area, the lidar data was vertically biased to the ground. 7. Comparisons between the biased lidar data and ground survey data within the project area were evaluated and a final RMSE value was generated to ensure the data meets project specifications.



Process contact
Organization's name Fugro EarthData, Inc.
Contact's role  processor


Contact information
Phone
Voice 1-301-948-8550
Fax 1-301-963-2064

Address
Type both
Delivery point 7320 Executive Way
City Frederick
Administrative area MD
Postal code 21704
Country US

Hours of service
Monday to Friday, 8 - 5, CST



Source data
Relationship to the process step used


Source citation
Alternate titles  Inertial Measurement Unit






Source data
Relationship to the process step used


Source citation
Alternate titles  Airborne Global Positioning System Data






Source data
Relationship to the process step produced


Source citation
Alternate titles  Calibrated LiDAR Point Cloud LAS 1.2 format








Process step
When the process occurred 2011-11-01
Description
LiDAR intensity stereopairs were viewed in 3-D stereo using Socet Set for ArcGIS softcopy photogrammetric software. The breaklines are collected directly into an ArcGIS file geodatabase to ensure correct topology. The LiDARgrammetry was performed under the direct supervision of an ASPRS Certified Photogrammetrist. The breaklines were stereo-compiled in accordance with the Data Dictionary. Inland Lakes and Ponds and Inland Streams and Rivers were collected according to specifications for the USGS PAgis LiDAR Project.



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  Lidar Intensity Stereopairs






Source data
Relationship to the process step produced


Source citation
Alternate titles  3D breaklines








Process step
When the process occurred 2011-12-01
Description
Dewberry used GeoCue software to develop raster stereo models from the LiDAR intensity. The raster resolution was 1ft.



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  Final LiDAR datasets with USGS classifications






Source data
Relationship to the process step produced


Source citation
Alternate titles  Lidar Intensity Stereopairs








Process step
When the process occurred 2011-12-01
Description
Dewberry utilizes a variety of software suites for inventory management, classification, and data processing. All LiDAR related processes begin by importing the data into the GeoCue task management software. The swath data is tiled according to project specifications (10,000 ft x 10,000 ft). The tiled data is then opened in Terrascan where Dewberry uses proprietary ground classification routines to remove any non-ground points and generate an accurate ground surface. Before the actual ground routine is run points with scan angles greater than plus or minus 19 degrees are classified to class 11, Withheld. Due to higher scan angles these points have the potential to introduce issues into the ground and are therefore not used in the final ground surface. The ground routine consists of three main parameters (building size, iteration angle, and iteration distance); by adjusting these parameters and running several iterations of this routine an initial ground surface is developed. The building size parameter sets a roaming window size. Each tile is loaded with neighboring points from adjacent tiles and the routine classifies the data section by section based on this roaming window size. The second most important parameter is the maximum terrain angle, which sets the highest allowed terrain angle within the model. Once the ground routine has been completed a manual quality control routine is done using hillshades, cross-sections, and profiles within the Terrasolid software suite. After this QC step, a peer review and supervisor manual inspection is completed on a percentage of the classified tiles based on the project size and variability of the terrain. After the ground classification corrections were completed, the dataset was processed through a water classification routine that utilizes breaklines compiled by Dewberry to automatically classify hydrographic features. The water classification routine selects ground points within the breakline polygons and automatically classifies them as class 9, water. During this water classification routine, points that are within 3 ft of the hydrographic features are moved to class 10, an ignored ground due to breakline proximity. In addition to classes 1, 2, 9, 10 and 11, there is a Class 7, noise points. This class was only used if needed when points could manually be identified as low/high points. The fully classified dataset is then processed through Dewberry's comprehensive quality control program. The data was classified as follows: Class 1 = Unclassified. This class includes vegetation, buildings, noise etc. Class 2 = Ground Class 7= Noise Class 9 = Water Class 10 = Ignored Class 11 = Withheld Points The LAS header information was verified to contain the following: Class (Integer) GPS Week Time (0.0001 seconds) Easting (0.01 foot) Northing (0.01 foot) Elevation (0.01 foot) Echo Number (Integer 1 to 4) Echo (Integer 1 to 4) Intensity (8 bit integer) Flight Line (Integer) Scan Angle (Integer degree)



Process contact
Organization's name Dewberry - Geospatial Services Group
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
Monday to Friday, 8 - 5, CST



Source data
Relationship to the process step used


Source citation
Alternate titles  Calibrated LiDAR Point Cloud LAS 1.2 format






Source data
Relationship to the process step produced


Source citation
Alternate titles  LiDAR datasets with USGS classifications








Process step
When the process occurred 2012-02-01
Description
Contours created from LiDAR data often contain large amounts of noise. This noise is reduced by using contour model key points. However, additional noise is removed by removing small closed contours that do not represent the tops of hills or bottoms of depressions.



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  Initial 2FT Contours






Source data
Relationship to the process step produced


Source citation
Alternate titles  Cleaned 2FT Contours








Process step
When the process occurred 2012-02-01
Description
2 FT contours were generated from the ESRI Terrain using ArcGIS software. Contours are labeled as intermediate or index with index contours set to every 10 feet.



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  ESRI Terrain






Source data
Relationship to the process step produced


Source citation
Alternate titles  Initial 2FT Contours








Process step
When the process occurred 2012-02-01
Description
Contour model key points are generated from the final LAS tiles. Model key points are intelligently thinned points that still depict all necessary breaks and changes in a surface but remove unnecessary or redundant points. The contour model key points are converted to a multipoint file and stored in an Arc Geodatabase (GDB). The 3D breaklines, Inland Lakes and Ponds and Inland Streams and Rivers, are imported into the same GDB. An ESRI Terrain is generated from these inputs. The surface type of each input is as follows: Model key point (multipoints): Masspoints Inland Lakes and Ponds: Hard Replace Inland Streams and Rivers: Hard Line



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  3D Breaklines






Source data
Relationship to the process step used


Source citation
Alternate titles  Lidar Ground Points, Model key points






Source data
Relationship to the process step produced


Source citation
Alternate titles  ESRI Terrain








Process step
When the process occurred 2012-02-01
Description
Using ArcGIS software, the contours are validated for correct topology, including must not intersect, must not self intersect, and must not have dangles. Contours are then manually reviewed with the 3D breaklines to ensure complete coverage, data integrity and that contours behave correctly around water bodies, water crossings, and elevated features such as overpasses.



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  Smoothed 2FT Contours






Source data
Relationship to the process step produced


Source citation
Alternate titles  Final 2FT Contours








Process step
When the process occurred 2012-02-01
Description
The contours are smoothed according to project specifications. Smoothing is accomplished by removing sharp corners and jagged bends in the contour data. Depending on the level of aesthetics required, multiple iterations of smoothing may be performed. Proprietary tools in an ESRI environment are used to perform the smoothing iterations.



Process contact
Individual's name Josh Novac
Organization's name Dewberry - Geospatial Services Group
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 813.421.8632
Fax 813.225.1385

Address
Type both
Delivery point 1000 N. Ashley Drive, Suite 801
City Tampa
Administrative area FL
Postal code 33602
Country US
e-mail addressjnovac@dewberry.com

Hours of service
8:00 - 5:00 EST



Source data
Relationship to the process step used


Source citation
Alternate titles  Cleaned 2FT Contours






Source data
Relationship to the process step produced


Source citation
Alternate titles  Smoothed 2FT Contours








Geoprocessing history 

Process
Name
Date  2012-05-10 11:18:16
ToolSource  c:\program files (x86)\arcgis\desktop10.0\ArcToolbox\Toolboxes\Data Management Tools.tbx\Dice
Command issued
Dice D:\ArcGIS_Server\DATA\LiDAR_2010_2011\BARE_EARTH\Contours_2ft.gdb\Contours_2ft_2010_2011_Original D:\ArcGIS_Server\DATA\LiDAR_2010_2011\BARE_EARTH\Contours_2ft.gdb\Contours_2ft_2010_2011_Diced 5000
Include in lineage when exporting metadata No


Distribution 

Distributor
Contact information
Organization's name USGS
Contact's position USGS NGTOC
Contact's role  distributor


Contact information
Phone
Voice (573) 308-3587

Address
Type both
Delivery point 1400 Independence Road
City Rolla
Administrative area MO
Postal code 65401
Country US
e-mail addresspemmett@usgs.gov





Distribution format
*Name File Geodatabase Feature Class


Fields 

Details for object Contours_2ft_2010_2011 
*Type Feature Class
*Row count 146411
Definition
2ft Contours

Definition source
USGS PAgis LiDAR Project Data Dictionary



Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 0
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field ELEVATION
 
*Alias ELEVATION
*Data type SmallInteger
*Width 2
*Precision 0
*Scale 0
Field description
Contour elevation value

Description source
ESRI

Description of values
Whole numbers representing elevation values





Field SHAPE
 
*Alias Shape
*Data type Geometry
*Width 0
*Precision 0
*Scale 0
Field description
Feature geometry.

Description source
ESRI

Description of values
Coordinates defining the features.





Field Type
 
*Alias Type
*Data type String
*Width 50
*Precision 0
*Scale 0




Field Shape_Length
 
*Alias Shape_Length
*Data type Double
*Width 8
*Precision 0
*Scale 0
*Field description
Length of feature in internal units.

*Description source
ESRI

*Description of values
Positive real numbers that are automatically generated.







Metadata Details 

Metadata language English (UNITED STATES)


Scope of the data described by the metadata  dataset
Scope name* dataset


Last update 2011-11-07


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Standard or profile used to edit metadata ItemDescription


Created in ArcGIS for the item 2012-04-19 19:54:07
Last modified in ArcGIS for the item 2015-12-14 14:30:39


Automatic updates
Have been performed Yes
Last update 2015-12-14 14:30:39


Metadata Contacts 

Metadata contact
Individual's name Joseph W. Scott
Organization's name USGS
Contact's position USGS NGTOC
Contact's role  point of contact


Contact information
Phone
Voice (573) 308-3587

Address
Type both
Delivery point 1400 Independence Road
City Rolla
Administrative area MO
Postal code 65401
Country US
e-mail addresspemmett@usgs.gov



Thumbnail and Enclosures 

FGDC Metadata (read-only) 

Entities and Attributes