Michigan Census Block Groups for 1990

Metadata:

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

Identification_Information:

Citation:

Citation_Information:

Title: Michigan Census Block Groups for 1990

Geospatial_Data_Presentation_Form: vector digital data

Description:

Abstract:

This data set is part of the Michigan Geographic Framework and consists of polygons that represent Michigan Census 1990 block group boundaries as assigned to the Michigan Geographic Framework (MGF). The framework serves as the digital base map for State of Michigan government. Specifically, this Michigan base map will consist of an Arc Info coverage which includes features and attributes based on the current TIGER/Line Files, base map features based on both the Michigan Department of Natural Resources (MDNR) Michigan Resource Information System (MIRIS) Files and an enhanced linear referencing system built from the Michigan Department of Transportation (MDOT) Michigan Accident Location Index (MALI). The Geographic Framework will serve as a common and standardized infrastructure on which all GIS users of 1:24,000 scale map data can build their applications. At the heart of the Geographic Framework will be the ability to administer programs that use location-based information and need to relate one database to another geographically. Version 14a replaces Version 13a as the current version of the Michigan Geographic Framework (MGF). A primary driving force in the creation of Framework Version 14a was the continued reconciliation of the road network and city/village boundaries with current information.

Purpose:

To display the polygons that represent Michigan Census 1990 block group boundaries. The Michigan Geographic Framework is being created to provide: significant cost-savings due to less duplication of effort across agency lines low-cost geographic database for users of GIS a common-standardized product for any area in Michigan a focal-point for establishing partnerships between federal, state, regional, county and local agencies a product that will be a rallying point for creating an ongoing update and maintenance program for transportation and other features like hydrography and municipal boundaries improved communication between agencies involved in geographic information management the cross integration of demographic and natural resource information, and other data sets the ability to look at what-if scenarios that were not possible before. The framework geography is maintained in the Michigan Georef projection system which is a form of an Oblique Mercator projection. All the data items described in the data dictionary may not be filled. The fields are present to allow for future enhancement.

Supplemental_Information:

The framework geography is maintained in the Michigan Georef projection system which is a form of an Oblique Mercator projection. All the data items described in the data dictionary may not be filled. The fields are present to allow for future enhancement.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.556669

East_Bounding_Coordinate: -82.064868

North_Bounding_Coordinate: 48.284139

South_Bounding_Coordinate: 41.632056

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories

Theme_Keyword: Hydrography

Theme_Keyword: Census area tabulation boundaries

Theme_Keyword: Rivers

Theme_Keyword: School District boundaries

Theme_Keyword: Streets

Theme_Keyword: Lakes

Theme_Keyword: Streams

Theme_Keyword: State of Michigan

Theme_Keyword: Legislative district boundaries

Theme_Keyword: Political jurisdiction boundaries

Theme_Keyword: Framework

Theme_Keyword: Railroads

Theme_Keyword: Roads

Theme_Keyword: Political boundaries

Theme_Keyword: inlandWaters

Theme_Keyword: transportation

Theme_Keyword: boundaries

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: State of Michigan

Place_Keyword: State

Access_Constraints: None

Use_Constraints:

No warranty, expressed or implied is made and no liability is assumed by the State of Michigan in general or the Michigan Center for Geographic Information in specific as to the accuracy or usability of this data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Center for Shared Solutions, DTMB

Contact_Person: Framework Contact

Contact_Position: Dispatcher

Contact_Address:

Address_Type: physical

Address: 111 S Capitol Ave 10th Floor Romney Building

City: Lansing

State_or_Province: Michigan

Postal_Code: 48933

Country: US

Contact_Voice_Telephone: 517-373-7910

Contact_Facsimile_Telephone: 517-373-2939

Contact_Electronic_Mail_Address: [email protected]

Hours_of_Service: 8 am - 5 pm

Native_Data_Set_Environment:

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

Data_Quality_Information:

Logical_Consistency_Report: Data was tested within the parameters of the program

Completeness_Report: Data is as complete as possible

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: 9630

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: 0.0000000071393224665428095

Ordinate_Resolution: 0.0000000071393224665428095

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.CENSUS_1990_BLOCK_GROUP

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: BG90

Attribute:

Attribute_Label: BG_LBL

Attribute:

Attribute_Label: LINK

Attribute:

Attribute_Label: SQKM

Attribute_Definition: Area in Square Miles

Attribute:

Attribute_Label: SQMILES

Attribute_Definition: Area in Square Miles

Attribute:

Attribute_Label: ACRES

Attribute_Definition: Area in acres

Attribute:

Attribute_Label: Shape.STArea()

Attribute:

Attribute_Label: Shape.STLength()

Metadata_Reference_Information:

Metadata_Date: 20141002

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time