Lake Polygons

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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:

James Breck, Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research

Publication_Date: 200403

Title: Lake_polygons_200403

Edition: 200403

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Institute for Fisheries Research, Ann Arbor, Michigan

Publisher:

Michigan Department of Natural Resources, Fisheries Division, IFR

Other_Citation_Details:

This dataset is constantly evolving. When a substantial number of edits have been made, a new version will be released. Please cite the version you are using.

Online_Linkage: Lake_polygons_200403.shp

Larger_Work_Citation:

Citation_Information:

Originator:

James Breck, MDNR, Fisheries Division, Institute for Fisheries Research

Title: Digital Water Atlas of Michigan

Description:

Abstract:

This dataset was released by James Breck, Michigan Department of Natural Resources, at the Institute for Fisheries Research. The statewide Michigan Hydrography Framework (version?) (based upon TIGER/Line Files, including basemap features based on both MDNR MIRIS files and enhanced linear referencing system built from the Michigan Accident Location Index (MALI)) was utilized as the basis of this dataset. Lake polygons present in this layer were edited (shape, attributes, location, duplicate representations for a lake in multiple counties), created for lakes that were detemined to be missing, and adjusted to reflect our current knowledge of the waterbodies throughout the state. For each lake (~10 acres or larger), a "New-Key" was assigned, based upon Humphrys and Green (1962). This unique identifier serves to link these saptial representations to numerous datasets (historical, current, and future) containing information pertaining to water quality, depth, origin, etc..

Purpose:

This dataset was developed from the Michigan Hydro framework to represent our most current information on lake area and location. It is intended for inclusion in the Digital Water Atlas of Michigan (based upon the 1:100K NHD). It is for use by state agency employees and individuals for pursuits related to the improvment of inland lake information or those assessing the state of water quality and aquatic resources in Michigan.

Supplemental_Information:

See <http://ifrgis.org> for more information on the Digital Water Atlas and other GIS efforts at the Institute for Fisheries Research.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 200403

Ending_Date: unknown

Currentness_Reference: publication date

Status:

Progress: In work

Maintenance_and_Update_Frequency: Continually

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.506130

East_Bounding_Coordinate: -82.127904

North_Bounding_Coordinate: 48.185153

South_Bounding_Coordinate: 41.636634

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: Lakes

Theme_Keyword: Michigan

Theme_Keyword: Inland waters

Theme_Keyword: Digital Water Atlas

Theme_Keyword: Hydrography

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Lower Peninsula

Place_Keyword: Upper Peninsula

Temporal:

Temporal_Keyword: Current

Access_Constraints:

This dataset is a work in progress, and relevant for the date it is published. If this dataset is used, please cite Jim Breck and the Digital Water Atlas of Michigan.

Use_Constraints:

Though this dataset represents our most current and up to date information on the lakes of Michigan (~10 acres and larger), it is under continual improvement and modifications are made frequently. The latest set of improvements are made and are reflected in the name of the file (lakes_polygons_200403.shp was created in March of 2004).

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dr. James Breck

Contact_Organization:

Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research

Contact_Position: Research Biologist

Contact_Address:

Address_Type: mailing and physical address

Address: 212 Museums Annex Building, 1109 North University Ave.

City: Ann Arbor

State_or_Province: Michigan

Postal_Code: 48109-1084

Country: USA

Contact_Voice_Telephone: 734/ 663-3554 x 110

Contact_Facsimile_Telephone: 734/ 663-9399

Contact_Electronic_Mail_Address: breckj@michigan.gov

Hours_of_Service: Monday - Friday, 8:00 am - 5:00 pm

Contact_Instructions: Please call or email with questions.

Data_Set_Credit:

The original basemap used to produce this map was made available to the Institute for Fisheries Research by the Michigan Department of Natural Resources, Center for Geographic Information. "It was derrived from the US Census Bureau based TIGER line files and the Michigan DNR's MIRIS files (contaiing features that were digitized from USGS topographic quads), MI Dpet. of Transportation ACT51 maps through 1999, Qualified Voter File project (QVF) maps begun in 1997, 1992 and 1997 Michigan State University aerial photos, 1992-2000 USGS Digitial Ortho Quad photos." Quoted information was taken from a set of example metadata (http:mic-cluster.state.mi.us/webapp/cgi/framework/metadata/Washtenaw.html ) Numerous additions of lakes, modification of lake shape and attribution were made reflecting local knowledge, as well as historical records.

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700; ArcGIS v8.2

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attributes assigned to the polygons representing lakes are accurate to the best of our knowledge. Acreage (Acres_GIS to the nearest 0.001 acres) was determined by software (ArcGIS) calculations. Lake names were derrived from the framework, and altered if deemed necessary.

Logical_Consistency_Report:

These lake features present in the Michigan Hydrologic Framework (version ?) were included as the basemap. Since acquiring this spatial dataset in 199????, many edits were made to both the spatial representation and attributes. Largely, this information, shares the consistency of the Michigan Hydrologic Framework. While improving the framework's spatial representation and attributes, a "New_Key" was added to each lake polygon so that it could be linked to other sources of data, namely the database of MI lakes compiled here at the Institute for Fisheries Research.

Completeness_Report:

It is complete and represents the truth, to the best of our knowledge.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The original Michigan Hydrologic Framework basemaps (source of the polygon file for lakes) were digitized from TIGER/Line Files and 7.5 Minute USGS topogrpahic quadrangles in Microstation using an error of 0.02% or less.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 80 feet

Horizontal_Positional_Accuracy_Explanation: Accurracy value = +/- 80 feet

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Michigan Center for Geographic Information

Publication_Date: Unknown

Publication_Time: Unknown

Title: Michigan Geographic Framework

Geospatial_Data_Presentation_Form: vector digital data

Other_Citation_Details:

See the State of Michigan's Spatial Data Library for more details on the Michigan Geographic Framework.

Online_Linkage:

<http://www.dnr.state.mi.us/spatialdatalibrary/metadata/base24k_metadata.htm>

Source_Scale_Denominator: 1:24,000 Michigan Hydrological Framework

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20040302

Beginning_Time: unknown

Ending_Date: unknown

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: MGF

Source_Contribution:

Michigan Center for Geographic Information MDNR, Land and Mineral Services Division Resource Mapping and Aerial Photography 111 S. Capital Ave., 10th Floor Lansing, MI 48933 USA

Process_Step:

Process_Description:

Upon importing the waterbody features from the Michigan Geographic Framework basemap into a shapefile, numerous edits have been made which resulted in the current layer. Edits were made to update lakes that no longer exist, lakes that recently were created, and to reflect other alterations to the hydrology, as determined by visual inspection of the state of Michigan's aerial photos, digital raster graphics, or other exisiting Michigan frameowrk.

Process_Date: 20021204

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dr. James Breck

Contact_Organization:

Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research

Contact_Position: Research Biologist

Contact_Voice_Telephone: 734/ 663-3554 x110

Contact_Facsimile_Telephone: 734/ 663-9399

Contact_Electronic_Mail_Address: breckj@michigan.gov

Hours_of_Service: Monday - Friday 8:00am - 5:00pm

Contact_Instructions: Please call or email with questions.

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

E:\dwa\data_sent\cgi_200403\lake_polygons_200403\Lake_polygons_200403

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 70415

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Oblique Mercator

Oblique_Mercator:

Scale_Factor_at_Center_Line: 0.999600

Oblique_Line_Azimuth:

Azimuthal_Angle: 337.255560

Azimuth_Measure_Point_Longitude: -86.000000

Latitude_of_Projection_Origin: 45.309166

False_Easting: 2546731.496000

False_Northing: -4354009.816000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.001024

Ordinate_Resolution: 0.001024

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Lake_polygons_200403

Entity_Type_Definition:

Lake polygon layer for the state of Michigan; spatial representation and attributes are inlcuded in this dataset.

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Range_Domain:

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute_Measurement_Frequency: As needed

Attribute:

Attribute_Label: AREA

Attribute_Definition: Area calculated by software

Attribute_Definition_Source: ESRI

Attribute_Measurement_Frequency: Unknown

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition: Perimeter calculated by software

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: LAKE_TYPE

Attribute_Definition: Object is classified as a lake, island, or stream.

Attribute_Definition_Source: MDNR Fisheries Division

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Lake

Enumerated_Domain_Value_Definition: Polygon classified as a lake.

Enumerated_Domain:

Enumerated_Domain_Value: Island

Enumerated_Domain_Value_Definition: Polygon classified as an island.

Attribute:

Attribute_Label: NAME

Attribute_Definition: Name of lake

Attribute_Definition_Source: MDNR Institute for Fisheries Research

Attribute:

Attribute_Label: UNIQUE_ID

Attribute_Definition:

Unique_ID assigned to each feature (island, lake, stream) in shapefile.

Attribute_Definition_Source: Uncertain

Attribute:

Attribute_Label: LAKE_NAME

Attribute_Definition:

"Those names appearing on the United States Geological Quadrangles are given highest presedence."

Attribute_Definition_Source: Humphrys and Green. 1962. Michigan Lake Inventory.

Attribute:

Attribute_Label: COUNTY

Attribute_Definition: County where the lake's outpour resides.

Attribute_Definition_Source: MDNR Institute for Fisheries Research

Attribute:

Attribute_Label: NOTE24

Attribute_Definition: Additional information regarding edits performed to this item.

Attribute_Definition_Source: MDNR Institute for Fisheries Research

Attribute:

Attribute_Label: NEW_KEY

Attribute_Definition:

"Unique code for a given water (eg. 72-117), based on the county numbers and lake numbers assigned by Humphrys and Green (1962). Portions of a lake in different counties have the sam e New_Key, and bears the county number of where lake's outpour resides."

Attribute_Definition_Source: Humphrys and Green. 1962. Michigan Lake Inventory.

Attribute:

Attribute_Label: HECTARES

Attribute_Definition: Area in hectares calculated by software (Area*0.0001).

Attribute_Definition_Source: MDNR Institute for Fisheries Research

Attribute_Domain_Values:

Attribute:

Attribute_Label: ACRES_GIS

Attribute_Definition:

Area in acres calculated by software (Area/4046.8564224) to the nearest 0.001.

Attribute_Definition_Source: MDNR Institute for Fisheries Research

Attribute_Domain_Values:

Attribute:

Attribute_Label: FMU

Attribute_Definition:

Designation of which MDNR Fisheries Management Unit the lake falls in.

Attribute_Definition_Source: MDNR Fisheries Division

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LSE

Enumerated_Domain_Value_Definition: Eastern Lake Superior Management Unit