Reference.CSS_SDE_ADMIN.Townships_TWN_RNG

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Michigan Department of Information Technology (MDIT), Center for Geographic Information (CGI)

Title: Reference.CSS_SDE_ADMIN.Townships_TWN_RNG

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Lansing, MI

Publisher: MDIT-CGI

Other_Citation_Details: Scale is 1:24,0000

Online_Linkage: <http://www.mcgi.state.mi.us/mgdl/>

Description:

Abstract:

Polygons of survey sections and private claims for Michigan's Upper and Lower Peninsulas.Click on link for further details: Michigan Section Grids

Purpose:

Regional, county and township land planning, evaluation and management

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20070611

Currentness_Reference: Current as of Publication Date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.565043

East_Bounding_Coordinate: -82.070227

North_Bounding_Coordinate: 48.286228

South_Bounding_Coordinate: 41.63269

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: town

Theme_Keyword: section

Theme_Keyword: grid

Theme_Keyword: public land survey system

Theme_Keyword: range

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Michigan

Place_Keyword: Alcona

Place_Keyword: County

Access_Constraints: None

Use_Constraints: Not intended for use at a resolution finer than 1:24,000

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Michigan Department of Information Technology, Center for Geographic Information

Contact_Address:

Address_Type: mailing and physical

Address: Romney Building, 10th Floor

Address: 111 S. Capitol Ave.

City: Lansing

State_or_Province: MI

Postal_Code: 48933

Contact_Voice_Telephone: 517-373-7910

Contact_Facsimile_Telephone: 517-373-2939

Data_Set_Credit:

Development of this dataset was initiated by the Michigan Department of Natural Resources (MDNR), Forest Management Division; Further processing, cleaning and maintenance of this dataset is the responsibility of the Center for Geographic Information (CGI), Michigan Department of Information Technology (MDIT)

Security_Information:

Security_Classification_System: FIPS Pub 199

Security_Handling_Description: Standard Technical Controls

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.1.3497

Cross_Reference:

Citation_Information:

Originator: General Land Office (US Federal Government)

Publication_Date: unknown

Title:

1890 Transcriptions of Surveyors Notes for Michigan (associated maps)

Publication_Information:

Publication_Place: Michigan

Publisher: US General Land Office

Cross_Reference:

Citation_Information:

Originator: Michigan Department of Natural Resources

Publication_Date: 19950101

Title: Quarter/Quarter Section CAD Files

Publication_Information:

Publication_Place: Lansing, MI

Publisher: MDNR

Cross_Reference:

Citation_Information:

Originator: Michigan Department of Natural Resources

Title: MIRIS Base

Publication_Information:

Publication_Place: Lansing, MI

Publisher: MDNR

Other_Citation_Details:

Source for MIRIS Base: 7.5 minute, 1:24,000 USGS Topographic Quads

Cross_Reference:

Citation_Information:

Originator: Michigan Department of Natural Resources

Publication_Date: 19980101

Title: Survey Sections

Publication_Information:

Publication_Place: Lansing

Publisher: MDNR

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: See Entity and Attribute Section

Logical_Consistency_Report: Polygon and chain-node topology present

Completeness_Report:

This data set does not represent all government lots noted in the General Land Office transcriptions (and associated maps). Most government lots included are found along the north and west sides of sections. Lakes that did not contain survey sections in the General Land Office maps are represented as polygons with null values.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Section lines have an accuracy of +/- 23 meters, based on horizontal accuracy of MIRIS base from which the section lines were taken.

Lineage:

Process_Step:

Process_Description:

The statewide section ESRI coverage was built on the statewide quarter/quarter coverage. A "regiondissolve" was run based on the values in the field "twnrngsec". The French Survey Claims and Indian Grants were exempt from the dissolve process and are maintained in the section coverage. The interior of the larger inland lakes, where no quarter/quarter section lines existed are maintained as empty polygons. Section Coverage was converted to shapefile format.

Process_Step:

Process_Description:

In almost all cases the manual cleanup of sliver polygons made no appreciable difference in the position of the county line or section lines (less than one meter). There are three areas to note, however, where some editing had to be done to the original position of the polygon boundaries. The most significant was along the "Third Correction Line" (between Towns 20 and 21 North). Starting about mid-state, there was an ever-widening gap working westward to Lake Michigan between the counties north and south of the Correction Line (Clare, Osceola, Lake, Mason, Missaukee, Wexford, and Manistee). The gap was quite narrow in the interior, but widened to as much as 20 meters by the western Mason/Manistee boundary. The southern boundary was 'pulled up' to the northern boundary in this case. A second area of revision were those areas where the county line follows a natural feature and splits the surveyed sections (Charlevoix/Emmet, Antrim/Grand Traverse/Kalkaska, Cass/St. Joseph, and Monroe/Wayne). The quarter/quarter section lines were fairly close in the northern cases, but larger adjustments had to be made in particular between Monroe and Wayne Counties. Where these edits were done, reference was made to the DOQs to maintain the integrity of the section lines as closely as possible. Finally, Section 36 of Town 42 North, Range 34 West in Iron County was missing from the source shapefile and had to be added manually; again, based on the DOQ for the area.

Process_Step:

Process_Description:

An edit was made in Town 39 North, Range 20 West in Delta County. The Section, QS and QQS assigned to the area of Round Island in Big Bay De Noc was changed from the West 1/2 of Section 27 to the E 1/4 of Section 28 and the W1/4 of Section 27. This adjustment was based on the 7.5 minute Topographic quadrangle of the area. QQS Coverage was converted to shapefile format.

Process_Step:

Process_Description:

The county coverages were appended together and then a clean was done on the resulting overlaps (which always generates 'sliver polygons') and gaps (which may, but not always generate 'sliver polygons'). Through experimentation, it was found that a fuzzy tolerance of 10 meters would remove about 90% of the 'sliver polygons' while maintaining the integrity of the legitimate quarter/quarter section polygons.

Process_Step:

Process_Description:

Michigan Department of Natural Resources (DNR) quarter/quarter section CAD files were compared to hard copy General Land Office maps and to section lines from the Michigan Resource Information System (MIRIS) Base. Microstation was then used to make corrections to the quarter/quarter section files to reflect the more accurate MIRIS base section lines. In cases where more than 16 quarter/quarter sections were found within a section, or where data distortion warranted investigation, the quarter/quarter section files were corrected to include government lots as portrayed in the General Land Office maps. Government lots around lakes and rivers were NOT included. Most of the government lots included are along the north or west side of sections. Interior grid lines are the result of a model based on survey methods used to establish quarter/quarter sections. That is, starting from the south section line and measuring 1,320 feet north for each east-west quarter/quarter line. Starting from the east section line and measuring 1,320 feet west for each north-south quarter/quarter line. Corrections to non-standard sections were made to the northern most row and/or western most column of quarter/quarter sections. Corrected quarter/quarter section CAD files were converted to Arc/Info using Arc/Info igdsarc command. Converted coverages were cleaned with a dangle tolerance of 0 and a fuzzy tolerance of .5. All dangles were corrected and the coverage was recleaned if necessary. Coverages were then projected from Michigan State Plane coordinate system to Michigan GeoRef coordinate system (oblique mercator projection) using ArcInfo project command. Arc topology was created to allow for selection of arcs based on CAD level (values derived from igds conversion). A database of town, range, section, quarter, quarter/quarter and corner coordinates was derived from DNR survey section data using FoxPro. Values from database where then used to generate label points into Arc/Info polygon coverages. ArcView was used to compare quarter/quarter section coverage labels to survey section values and to correct polygon label errors. General Land Office maps were referenced to determine label values for government lots and private claims. After polygon label errors were corrected, the polygon attribute table was joined to the database of town, range, section, quarter, quarter/quarter values. Pseudo nodes were removed from the polygons using Arc/Info unsplit command. X-coordinate and y-coordinate values for the polygon label point were added to the polygon attribute table using Arc/Info addxy command. Node topology was then built, and node x-coordinate and y-coordinate values where added to the node attribute table using Arc/Info command addxy node. Shapefiles for each county were created by using the ArcView "Convert to Shapefile" command.

Process_Date: 19930101

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 2446

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 Hotine Oblique Mercator Azimuth Natural Origin

Oblique_Mercator:

Scale_Factor_at_Center_Line: 0.9996

Oblique_Line_Azimuth:

Azimuthal_Angle: 337.25556

Azimuth_Measure_Point_Longitude: -86.0

Latitude_of_Projection_Origin: 45.30916666666666

False_Easting: 2546731.496

False_Northing: -4354009.816

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.0001280000001192093

Ordinate_Resolution: 0.0001280000001192093

Planar_Distance_Units: meter

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Reference.CSS_SDE_ADMIN.SECTIONS_CSS

Entity_Type_Definition_Source: General Land Office Transcriptions, MDNR MIRIS Base

Attribute:

Attribute_Label: OBJECTID

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: TWNRNG

Attribute_Definition: Town + Range

Attribute_Definition_Source: Town and Range values

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value_Definition: Text

Enumerated_Domain_Value_Definition_Source: Unknown

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: Shape.STArea()

Attribute:

Attribute_Label: Shape.STLength()

Overview_Description:

Entity_and_Attribute_Overview:

Contains attributes pertaining to Survey Town, Range, Section, and Private Claims

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: MDIT-Center for Geographic Information

Contact_Address:

Address_Type: mailing and physical

Address: Romney Building, 10th Floor

Address: 111 S. Capitol Ave

City: Lansing

State_or_Province: MI

Postal_Code: 48933

Contact_Voice_Telephone: 517-373-7910

Contact_Facsimile_Telephone: 517-373-2939

Distribution_Liability:

MDNR and MDIT-CGI assume no liability for results or conclusions drawn from the use of this data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ArcView Shapefile

Format_Specification:

For use with Environmental Systems Research Institute (ESRI) software

File_Decompression_Technique:

Decompress to a self-extracting executable file (.exe) via WinZip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://www.mcgi.state.mi.us/mgdl/>

Offline_Option:

Offline_Media: CD-ROM

Metadata_Reference_Information:

Metadata_Date: 20141016

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: MDIT-Center for Geographic Information

Contact_Address:

Address_Type: mailing and physical

Address: Romney Building, 10th Floor

Address: 111 S. Capitol Ave.

City: Lansing

State_or_Province: MI

Postal_Code: 48933

Contact_Voice_Telephone: 517-373-7910

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Security_Information:

Metadata_Security_Classification_System: Unclassified

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: None