Metadata for Elevation Data, ESRI Generate Files, Yellowstone River Corridor, Custer, Prairie, Richland, Rosebud, Sweet Grass, and Treasure Counties, Montana, and McKenzie County, North Dakota, 2007

Identification Information
Data Quality Information
Spatial Reference Information
Distribution Information
Metadata Reference Information

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Identification Information:

Citation:

Originator: Woolpert, Inc.

Publication date: 06/12/2009

Title:

Elevation Data, ESRI Generate Files, Yellowstone River Corridor, Custer, Prairie, Richland, Rosebud, Sweet Grass, and Treasure Counties, Montana, and McKenzie County, North Dakota, 2007

Publication place: Helena, MT
Publisher: Montana State Library

Online linkage: ftp://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Elevation/Generate

Larger Work Citation:

Originator: Merrick & Company
Originator: Woolpert, Inc.
Publication date: 2009
Title: Yellowstone River Floodplain Elevation Data, 2004-2007
Online linkage: http://apps.msl.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={197c8cad-2e4e-4965-8009-109451d68f84}

Abstract:

The data consists of elevation information stored as ESRI generate files containing information for the creation of triangulated irregular networks (TINs). Each file covers a 1200x1200 meter area along the Yellowstone River, and there are 1261 sections in this phase of the mapping project.

Purpose:

These data were created as part of a joint Yellowstone River Conservation District Council and U.S. Army Corps of Engineers, Omaha District cumulative impacts study of the Yellowstone River channel and floodplain. The multi-agency interdisciplinary planning study extends 477 river miles from Sweetgrass County, Montana to the Missouri River confluence in McKenzie County, North Dakota. These data are specifically intended to provide an accurate digital surface model with which to analyze the hydraulic conditions of the Yellowstone River channel and floodplain. The TINs were created to operate within the ArcGIS software environment. In addition, they are intended to serve as a base for the project GIS and also to support a wide variety of analyses including planimetric data extraction (e.g., infrastructure, riverine geomorphology, land cover, habitat and vegetation), and to monitor long-term river channel changes.

Supplemental information:

These data are also available in DEM format and as ESRI TIN datasets at http://geoinfo.montanastatelibrary.org/data/yellowstone_river_corridor_resource_clearinghouse/elevation_data/, along with data (from 2004) for the remaining counties of the Yellowstone River corridor.

How to use the Generate files:
There are two data files for each grid tile. One file has a .pnt extension. Each line in the .pnt file has four columns. The first column contains an ID number and is needed if the file is to be imported with the Arc/Info Generate tool. The second and third columns are the x and y coordinates of the point and the fourth column is the elevation of the point in meters. The other file has a .lin extension and contains the coordinates of hard breaklines used in developing the TIN. The information for each line segment in these files spans several records. The first record contains an ID number that is needed for the Arc/Info Generate tool. This is followed by at least two records of three columns each that contain the x, y, and elevation of a vertex along the line. Each line segment is terminated by a record that consists of the word END.

This is the procedure to create a TIN from a pair of these files with ArcMap and ArcToolbox. The procedure requires that Arc/Info Workstation and 3D Analyst be installed.
1 - Use the Generate tool in the Coverage Tools-Conversion-To Coverage toolset to convert the .pnt file to a point coverage and the .lin file to a line coverage.
2 - Use the Create TIN tool in the 3D Analyst Tools-TIN Creation toolset to create a new empty TIN.
3 - Open the Edit TIN tool in the 3D Analyst Tools-TIN Creation toolset and add the two coverages you just made to the empty TIN.
4 - Set the height_field of the point coverage to $ANGLE and make sure its SF_type is masspoint.
5 - Make sure the SF_type of the line coverage is hardline.
6 - push the OK button.

Time period of content:

Beginning date: 10/15/2007
Ending date: 11/02/2007
Currentness reference: ground condition

Status:

Progress: Complete
Maintenance and update frequency: As needed

Access constraints: None

Use constraints:

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without full awareness of its limitations.

Point of contact:

Stan Danielsen
Project Coordinator
Yellowstone River Conservation District Council (YRCDC)
1371 Rimtop Drive
Billings , Montana 59105
Telephone: 406-247-4414
Fax: 406-247-4429
E-Mail: sdanielsen@mt.gov

Data Quality Information:

Attribute accuracy report:

Attribution of hardline, mass point and exterior were verified

Logical consistency report:

Triangulated surface model extends across all features, intersects and terminates at the project boundary

Completeness report:

Triangulated surface was visually verified using ESRI 3D analyst shaded relief data.

Horizontal Positional Accuracy Report:

Horizontal accuracy meets or exceeds a 4.5 foot horizontal accuracy at 95 percent confidence level using RMSE(r) x 1.7308 as defined by the FGDC Geospatial Positioning Accuracy Standards

Quantitative horizontal positional accuracy assessment:

Horizontal positional accuracy value: NSSDA
Horizontal positional accuracy explanation:: The National Standard for Spatial Data Accuracy (NSSDA) implements a statistical and testing methodology for estimating the positional accuracy of points on maps and in digital geospatial data, with respect to georeferenced ground positions of higher accuracy.

Vertical positional accuracy report:

Vertical accuracy meets or exceeds a 0.6 foot vertical accuracy at 95 percent confidence level using RMSE(r) x 1.9600 as defined by the FGDC Geospatial Positioning Accuracy Standards

Quantitative vertical positional accuracy assessment:

Vertical positional accuracy value: NSSDA
Vertical positional accuracy explanation:: The National Standard for Spatial Data Accuracy (NSSDA) implements a statistical and testing methodology for estimating the positional accuracy of points on maps and in digital geospatial data, with respect to georeferenced ground positions of higher accuracy.

Lineage:

Source information:

Originator: Eisenbraun and Associates
Publication date: 03/14/2008
Title: Triangulated-Irregular Network
Type of source media: Digital file
Calendar date: 03/14/2008

Process step:

The LiDAR data was acquired using a Leica ALS50 from an average altitude of 3,000-feet above ground level to provide an average ground sample distance of 2.1-feet. First and last return data was collected along with the signal return intensity. Two redundant airborne GPS bases stations were utilized during the data acquisition with maximum line-of-sight distance between the base station and aircraft of 20-km. The LiDAR data was reduced using Grafnav (Waypoint Consulting) for GPS post-processing, PosProc (Applanix Crop) for IMU processing, ALS50 Post Processor (LH Systems) to initial LiDAR processing, TerraScan (Terrasolid) for initial point classification, and proprietary Woolpert developed software for refining the point classification and QC. The LiDAR data was reviewed in 3D using a digital photogrammetric work station using ADS40 digital stereo imagery. The LiDAR data was filtered into breaklines to separate the mass point. After the data set was filtered it was then imported to ArcGIS 3D Analyst to create the TIN.

Process date: 03/14/2008

Process contact:

Woolpert, Inc.
116 Inverness Drive East, Suite 105
Englewood, CO 80112
Telephone: 303-925-1400
Fax: 303-925-1401

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45
Standard parallel: 49
Longitude of central meridian: -109.5
Latitude of projection origin: 44.25
False easting: 600000
False northing: 0

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

Altitude system definition:

Altitude datum name: North American Vertical Datum of 1988
Altitude resolution: .01
Altitude distance units: meters
Altitude encoding method:: Explicit elevation coordinate included with horizontal coordinates

Distribution Information:

Distributor:

Montana State Library
P.O. Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
E-Mail: geoinfo@mt.gov

Resource description: Downloadable data

Distribution liability:

Standard order process:

Digital form:

Format name: Plain-text ESRI Generate Files
Online option:

Metadata Reference Information:

Metadata date: 11/07/2013

Metadata review date: 12/10/2008

Metadata review date: 04/02/2008

Metadata contact:

Woolpert, Inc.
116 Inverness Drive East, Suite 105
Englewood, CO 80112
Telephone: 303-925-1400
Fax: 303-925-1401