Metadata: Lakes and Rivers - Open Water Features

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Lakes and Rivers - Open Water Features

This page last updated: 07/08/2010
Metadata created using Minnesota Geographic Metadata Guidelines

Metadata Summary

Originator	Metropolitan Council
Abstract	This layer depicts open water features for lakes and rivers. It currently used data as depicted in the 2005 Generalized Land Use dataset developed by the Metropolitan Council. This dataset is intended to be updated over time, unlike the static historic datasets. It includes lakes larger than 3 acres and rivers wider than 200 feet. It may also include some smaller open water features. This layer does not depict the satutory Ordinary High Water Level of lakes. NOTES: - These are water features as depicted in the 2005 Generalized Land Use dataset, which was derived from spring 2005 air photos. They may not depict the normal size/extent of these water features. - Within the land use dataset, when a water feature or a portion thereof has another possible land use classification, the other classification is used. For example, major highway crossings over rivers are classified as transportation within the land use dataset. Such instances of major highways over rivers have been changed back to water features in this dataset. - Wastewater stabilization ponds, which can be quite large, are not shown in this layer. - The extent of water varies seasonally and annually with rainfall. The extent of water shown in this dataset is representative of the time the aerial photos were taken in May 2005.
Browse Graphic	View a sample of the data.
Time Period of Content Date	04/14/2005
Currentness Reference	Ground condition (air photos) as of May 13th and 14th, 2005
Access Constraints	None
Use Constraints	None
Distributor Organization	Metropolitan Council
Ordering Instructions	This dataset is distributed on the internet by clicking below after 'Online Linkage'. Doing so will tell your browser to download a 'ZIP' file which will contain the following: - ArcView shape files - metadata for the dataset (.htm) - NOTICE.RTF, an important notice about this dataset that can be read by any word processing software. Additionally, this dataset is available for direct use via one or more map services. More information about what a web mapping service is can be found at http://www.datafinder.org/services/ The specific map service and layer name for this dataset can be found by clicking the blue or green boxes under the map service column of the DataFinder Catalog at http://www.datafinder.org/catalog/ .
Distribution Liability	NOTICE: The Geographic Information System (GIS) Data to which this notice is attached are made available pursuant to the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). THE GIS DATA ARE PROVIDED TO YOU AS IS AND WITHOUT ANY WARRANTY AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. The GIS Data were developed by the Metropolitan Council for its own internal business purposes. The Metropolitan Council does not represent or warrant that the GIS Data or the data documentation are error-free, complete, current, or accurate. You are responsible for any consequences resulting from your use of the GIS Data or your reliance on the GIS Data. You should consult the data documentation for this particular GIS Data to determine the limitations of the GIS Data and the precision with which the GIS Data may depict distance, direction, location, or other geographic features. If you transmit or provide the GIS Data (or any portion of it) to another user, it is recommended that the GIS Data include a copy of this disclaimer and this metadata.
Online Linkage	I AGREE to the notice in "Distribution Liability" above. Clicking to agree will begin the download process (See Ordering Instructions above for details.)

Full Metadata

Lakes and Rivers - Open Water Features

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information


Section 1	Identification Information		Top of page
Originator	Metropolitan Council
Title	Lakes and Rivers - Open Water Features
Abstract	This layer depicts open water features for lakes and rivers. It currently used data as depicted in the 2005 Generalized Land Use dataset developed by the Metropolitan Council. This dataset is intended to be updated over time, unlike the static historic datasets. It includes lakes larger than 3 acres and rivers wider than 200 feet. It may also include some smaller open water features. This layer does not depict the satutory Ordinary High Water Level of lakes. NOTES: - These are water features as depicted in the 2005 Generalized Land Use dataset, which was derived from spring 2005 air photos. They may not depict the normal size/extent of these water features. - Within the land use dataset, when a water feature or a portion thereof has another possible land use classification, the other classification is used. For example, major highway crossings over rivers are classified as transportation within the land use dataset. Such instances of major highways over rivers have been changed back to water features in this dataset. - Wastewater stabilization ponds, which can be quite large, are not shown in this layer. - The extent of water varies seasonally and annually with rainfall. The extent of water shown in this dataset is representative of the time the aerial photos were taken in May 2005.
Purpose	A general depiction of lakes and rivers in the metro area that is periodically updated
Time Period of Content Date	04/14/2005
Currentness Reference	Ground condition (air photos) as of May 13th and 14th, 2005
Progress	Complete
Maintenance and Update Frequency	Irregular
Spatial Extent of Data	Twin Cities 7 County Metropolitan Area. This includes the counties of Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and Washington in Minnesota.
Bounding Coordinates	-94.012 -92.732 45.415 44.471
Place Keywords	Twin Cities, Anoka County, Carver County, Dakota County, Hennepin County, Ramsey County, Scott County, Washington County
Theme Keywords	Lakes, rivers, open water features, water features, water
Theme Keyword Thesaurus	None
Access Constraints	None
Use Constraints	None
Contact Person Information	Mark Kotz, GIS Database Administrator Metropolitan Council 390 Robert Street North St. Paul, Minnesota 55101-1805 Phone: 651-602-1644 FAX: 651-602-1674 E-mail: mark.kotz@metc.state.mn.us
Browse Graphic	View a sample of the data.
Browse Graphic File Description	Sample map showing the lakes and rivers layer.
Associated Data Sets	2005 Generalized Land Use http://www.datafinder.org/metadata/GeneralizedLandUse2005.htm Historic lakes and rivers datasets for 2005, 2000, 1997 and 1990.

Section 2	Data Quality Information	Top of full metadata	Top of page
Attribute Accuracy	Lake ID and names were assigned by spatially joining a point dataset obtained from the DNR Division of Waters. The accuracy of the attributes in the source dataset is not known. The accuracy of the spatial join was visually inspected and verified to ensure accurate assignment of these data.
Logical Consistency
Completeness	Entire seven county metro area is covered.
Horizontal Positional Accuracy	Boundaries of open water features were based on the 0.6 meter resolution digital orthophotos taken in May 2000. The scale at which lines were digitized varied as staff zoomed in and out while heads-up digitizing within ArcView, however most lines were digitized at an on-screen scale of no higher than 1:3000. In highly urbanized areas, 1:1500 was more common. As a general rule when developing this dataset it was the Metropolitan Council's intention to meet or exceed the National Mapping Accuracy Standards at 1:24,000 (within approximately 40 feet of actual location). No testing has been conducted to verify this.
Lineage	These water features were extracted from the Metropolitan Council's 2005 landuse dataset. Water feature boundaries were heads-up digitized from 0.6 meter digital orthophotos. The scale at which lines were digitized varied as staff zoomed in and out while heads-up digitizing within ArcView, however most lines were digitized at an on-screen scale of no higher than 1:3000. In highly urbanized areas, 1:1500 was more common. Land use data development procedures called for digitizing lakes larger than 3 acres and rivers wider than 200 feet. The dataset may also include some smaller open water features. DATA SOURCES: - 2005 MARKHURD Digital Orthophoto quarter quads (0.6 meter resolution) - 2000 land use delineations Lake ID and names were assigned by spatially joining a point dataset obtained from the DNR Division of Waters. The accuracy of the spatial join was visually inspected and verified to ensure accurate assignment of these data.
Source Scale Denominator

Section 3	Spatial Data Organization Information	Top of full metadata	Top of page
Native Data Set Environment	ArcGIS Version 9x
Geographic Reference for Tabular Data	DNR Lake ID
Spatial Object Type	Vector
Vendor Specific Object Types	polygon shapes
Tiling Scheme	One layer for entire metro area

Section 4	Spatial Reference Information	Top of full metadata	Top of page
Horizontal Coordinate Scheme	UTM
Ellipsoid	GRS80
Horizontal Datum	NAD83
Horizontal Units	Meters
Distance Resolution
UTM Zone Number	15

Section 5	Entity and Attribute Information	Top of full metadata	Top of page

Entity and Attribute Overview

OWF_ID:     A unique 8 character identifier for each open water  
            feature polygon. The value of this field is the Minnesota 
            DNR DOWLKNUM ID if one has been assigned by the DNR.  Where  
            no DOWLKNUM has been assigned, a unique sequential number  
            assigned by the Met Council is used, all starting with  
            '99...'.  For the seven rivers in the dataset, the GNIS ID  
            for the river is used. 
             
SYSTEM:     Differentiates lacustrine open water features (Lakes) from  
            riverine open water features (Rivers).  
 
NAME_DNR:   The DNR registered name of the lake, if one exists.  
 
ALT_NAME:   The alternative name of the lake. 
 
AREA_ACRES: The area of the polygon feature in acres.

Entity and Attribute Detailed Citation

Section 6	Distribution Information	Top of full metadata	Top of page
Publisher	Metropolitan Council
Publication Date	Periodically revised
Contact Person Information	Mark Kotz GIS Database Administrator Metropolitan Council 390 Robert Street North St. Paul, Minnesota 55101-1805 Phone: 651-602-1644 FAX: 651-602-1674 E-mail: mark.kotz@metc.state.mn.us
Distributor's Data Set Identifier	LakesAndRivers
Transfer Format Name	ArcView Shape File
Transfer Format Version Number	ArcGIS 9x
Transfer Size	Approximately 3 Mb for zip file.
Ordering Instructions	This dataset is distributed on the internet by clicking below after 'Online Linkage'. Doing so will tell your browser to download a 'ZIP' file which will contain the following: - ArcView shape files - metadata for the dataset (.htm) - NOTICE.RTF, an important notice about this dataset that can be read by any word processing software. Additionally, this dataset is available for direct use via one or more map services. More information about what a web mapping service is can be found at http://www.datafinder.org/services/ The specific map service and layer name for this dataset can be found by clicking the blue or green boxes under the map service column of the DataFinder Catalog at http://www.datafinder.org/catalog/ .
Distribution Liability	NOTICE: The Geographic Information System (GIS) Data to which this notice is attached are made available pursuant to the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). THE GIS DATA ARE PROVIDED TO YOU AS IS AND WITHOUT ANY WARRANTY AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. The GIS Data were developed by the Metropolitan Council for its own internal business purposes. The Metropolitan Council does not represent or warrant that the GIS Data or the data documentation are error-free, complete, current, or accurate. You are responsible for any consequences resulting from your use of the GIS Data or your reliance on the GIS Data. You should consult the data documentation for this particular GIS Data to determine the limitations of the GIS Data and the precision with which the GIS Data may depict distance, direction, location, or other geographic features. If you transmit or provide the GIS Data (or any portion of it) to another user, it is recommended that the GIS Data include a copy of this disclaimer and this metadata.
Online Linkage	I AGREE to the notice in "Distribution Liability" above. Clicking to agree will begin the download process (See Ordering Instructions above for details.)

Section 7	Metadata Reference Information	Top of full metadata	Top of page
Metadata Date	07/08/2010
Contact Person Information	Mark Kotz, GIS Database Administrator Metropolitan Council 390 Robert Street North St. Paul, Minnesota 55101-1805 Phone: 651-602-1644 FAX: E-mail: mark.kotz@metc.state.mn.us
Metadata Standard Name	Minnesota Geographic Metadata Guidelines
Metadata Standard Version	1.2
Metadata Standard Online Linkage	http://www.gis.state.mn.us/stds/metadata.htm

This page last updated: 07/08/2010