Impervious Surface Area Classification of Twin Cities Metropolitan Area, 2000

This page last updated: 04/10/2007
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator University of Minnesota, Remote Sensing and Geospatial Analysis Laboratory
Abstract Landsat TM data have been used to map the percentage of impervious surface area of the seven-county TCMA for the year 2000. Impervious surfaces are defined as areas impenetrable by water– including roads, rooftops, sidewalks and parking lots. The coverage provides information on the percentage of impervious surface on a 30-m pixel basis for all urban areas. The impervious surface layer was derived from a single date of Landsat-5 TM data. Following the classification of land cover types, a regression model relating percent impervious surface area to Landsat TM greenness values was used to estimate the percent impervious surface area for pixels classified as urban or developed. Classification of the Landsat TM data provides a means to map and quantify the degree of impervious surface area, an indicator of environmental quality, over large geographic areas and over time.
Browse Graphic none available
Time Period of Content Date 09/12/2000
Currentness Reference
Access Constraints None
Use Constraints By acceptance of this data, the user agrees to include a copy of this metadata record, including the liability disclaimer, whenever the uses transmits or provides the data (or any portion of it) to another user.
Distributor Organization Minnesota Land Management Information Center (LMIC)
Ordering Instructions This data set is distributed from the LMIC ftp site by clicking on 'Online Linkage.' Doing so will tell your browser to start downloading the zipfile imp_2000.zip, which contains the following files:

TCMA_Impervious_2000.tif - - Impervious Surface GeoTIFF file
IMP_2000.htm - - Metadata for this dataset
Disclaimer.txt - - U of M disclaimer for dataset

Save to the desired location, and unzip.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

Full Metadata

Impervious Surface Area Classification of Twin Cities Metropolitan Area, 2000

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 University of Minnesota, Remote Sensing and Geospatial Analysis Laboratory
Title Impervious Surface Area Classification of Twin Cities Metropolitan Area, 2000
Abstract Landsat TM data have been used to map the percentage of impervious surface area of the seven-county TCMA for the year 2000. Impervious surfaces are defined as areas impenetrable by water– including roads, rooftops, sidewalks and parking lots. The coverage provides information on the percentage of impervious surface on a 30-m pixel basis for all urban areas. The impervious surface layer was derived from a single date of Landsat-5 TM data. Following the classification of land cover types, a regression model relating percent impervious surface area to Landsat TM greenness values was used to estimate the percent impervious surface area for pixels classified as urban or developed. Classification of the Landsat TM data provides a means to map and quantify the degree of impervious surface area, an indicator of environmental quality, over large geographic areas and over time.
Purpose The data set was developed to map percent impervious surface area for the Twin Cities Metropolitan Area.
Time Period of Content Date 09/12/2000
Currentness Reference
Progress Complete
Maintenance and Update Frequency As needed
Spatial Extent of Data Seven-county Twin Cities Metropolitan Area (TCMA) of Minnesota, including Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington Counties.
Bounding Coordinates -94.020654
-92.727452
45.416185
44.467100
Place Keywords Seven-county Twin Cities Metropolitan Area
Theme Keywords imageryBaseMapsEarthCover, impervious surface area, urban, Landsat, impervious, runoff, land cover, permeability
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None
Use Constraints By acceptance of this data, the user agrees to include a copy of this metadata record, including the liability disclaimer, whenever the uses transmits or provides the data (or any portion of it) to another user.
Contact Person Information Marvin Bauer, Professor
Remote Sensing and Geospatial Analysis Lab, University of Minnesota
1530 Cleveland Avenue North
St. Paul, Minnesota 55108
Phone: (612) 624-3703
FAX: (612) 625-5212
E-mail: mbauer@umn.edu
Browse Graphic none available
Browse Graphic File Description
Associated Data Sets Impervious Surface Area Classification of Twin Cities Metropolitan Area, 1986
Impervious Surface Area Classification of Twin Cities Metropolitan Area, 1991
Impervious Surface Area Classification of Twin Cities Metropolitan Area, 1998

 
Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy The accuracy assessment was completed by selecting independent sample areas over the imagery. The percent impervious surface area was determined on DOQs for each sample and then compared to the estimated percent impervious surface from the regression model. The agreement between the Landsat estimate and DOQ measurements, as indicated by R˛, was 0.91, with a standard error for of 8.1%. See additional note under 'Lineage'.
Logical Consistency
Completeness
Horizontal Positional Accuracy
Lineage Production notes for TCMA_Impervious_2000.tif:

The source data for the Impervious Surface coverage was Landsat-5 TM imagery over path 27, rows 28 and 29 acquired on 9/12/2000. Well-distributed sample areas were selected to represent levels of percent imperviousness from DOQ's (Digital Ortho Quarter-Quads) covering the TCMA. A complete range of percent imperviousness was collected with at least two sample areas for every 5% interval. ArcView 3.2 was used to digitize the boundaries around each impervious feature and calculate the impervious surface percentage for each individual sample area. After calculating and attributing the percent imperviousness for each sample area, we determined the mean Landsat TM tasseled cap greenness value for each sample area by overlaying the sample onto Landsat greenness image. We then created a second order polynomial regression equation with the mean greenness values as the independent variable and DOQ sampled percent impervious surface area as the dependent variable. With this regression equation, we estimated impervious surface percent for each image pixel and rescaled the output values from 0 - 100%.

NOTE: In the course of the classification of cover types from the imagery, one land cover category was difficult to distinguish. Gravel pits have the same signature as paved areas and are impossible to separate out based on the signature alone. This is an issue in the Land Cover-Level 2 and Impervious Surface Categories. To distinguish the gravel pits, EPPL users can use the 'extractive' category in other land use/cover files. Other software users can obtain the Arc/INFO export files derived from the Minnesota Geological Survey map, 'Aggregate Resources for the Twin Cities Metropolitan Area, Minnesota -1999' - MGS Miscellaneous Map Series Map M-102. For more information on this data set, see http://lucy.lmic.state.mn.us/metadata/m102.html .
Source Scale Denominator
 
Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment ERDAS IMAGINE 8.5
Geographic Reference for Tabular Data
Spatial Object Type Raster
Vendor Specific Object Types
Tiling Scheme
 
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 30
Altitude Datum Not applicable
Depth Datum Not applicable
UTM Zone Number 15
SPCS Zone Identifier 2202
 
Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview
Entity and Attribute Detailed Citation Bauer, Marvin, Nathan Heinert and Jean Doyle. 2003. Impervious Surface Mapping and Change Monitoring using Landsat Remote Sensing. Technical report, Remote Sensing Laboratory, University of Minnesota. 26 pages.
 
Section 6 Distribution Information Top of full metadata Top of page
Publisher Remote Sensing and Geospatial Analysis Lab, University of Minnesota
Publication Date 05/2003
Contact Person Information Susanne Maeder
GIS Data Coordinator
Minnesota Land Management Information Center (LMIC)
300 Centennial Building; 658 Cedar Street
St. Paul, Minnesota 55155
Phone: (651) 201-2488
FAX: (651) 296-3698
E-mail: clearing.house@state.mn.us
Distributor's Data Set Identifier imp_2000
Distribution Liability The data are provided as is and without any warranty to their performance, merchantability, or fitness for any particular purpose. The data were developed by the University of Minnesota for its own research purposes. The University does not represent or warrant that the data or documentation are error-free, complete, current or accurate. You are responsible for any consequences resulting from use of the data or your reliance on it. You should consult the data documentation for this particular data to determine its limitations and the precision to which the GIS data may depict distance, direction, location or geographic features. If you transmit or provide the GIS data (or any portion of it) to another user, it must include a copy of this disclaimer.
Transfer Format Name GeoTiff
Transfer Format Version Number
Transfer Size 11.6 MB (unzipped)
Ordering Instructions This data set is distributed from the LMIC ftp site by clicking on 'Online Linkage.' Doing so will tell your browser to start downloading the zipfile imp_2000.zip, which contains the following files:

TCMA_Impervious_2000.tif - - Impervious Surface GeoTIFF file
IMP_2000.htm - - Metadata for this dataset
Disclaimer.txt - - U of M disclaimer for dataset

Save to the desired location, and unzip.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above.
 
Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date 04/10/2007
Contact Person Information Marvin Bauer, Professor
Remote Sensing and Geospatial Analysis Lab, Univerity of Minnesota
1530 Cleveland Avenue North
St. Paul, Minnesota 55108
Phone: (612) 624-3703
FAX: (612) 625-5212
E-mail: mbauer@umn.edu
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.lmic.state.mn.us/gc/stds/metadata.htm


This page last updated: 04/10/2007