MN GIS/LIS NEWS
Spring 2007
ISSUE 48

MN GIS/LIS NEWS
The Newsletter of the Minnesota GIS/LIS Consortium

Table of Contents

MN GIS/LIS Consortium

From the Chair
2007 Conference
Call for Awards
LMIC Budget

State
LMIC Update
Parcel Inventory Update
FSA Photo Update
Remote Sensing Workshop
Drought Monitoring

Governor's Council
Strategic Plan Update
Call for Commendations

Regional
MetroGIS Strategic Planning
2006 TC Metro Imagery
Property Foreclosure Info

Local
Snowmobile Trails in E911

Federal
2010 Census Address Program
LUCA Update
EarthNow!
Physical Features Map 

Higher Education
UWRF GIS/Catography
Satellite Monitoring Land/Water
GIS Day at UMD
St. Mary's Updates GIS Lab
Neighborhood Indicators
ND Online Certificate
GIS Body of Knowledge

People
McMaster to Head UCGIS

Other Places
Lawsuit May Limit GIS Industry
Disaster Management
Elevation for Nation
Food Security/Health
RI Tracks Coyotes

 

 

Satellite Monitoring of Minnesota Land and Water Resources
By Marvin Bauer and Leif Olmanson, University of Minnesota

The Remote Sensing and Geospatial Analysis Laboratory at the University of Minnesota, with support from the Minnesota Pollution Control Agency and Legislative Commission on Minnesota Resources, has recently completed two projects for analysis of land and water resources in Minnesota.

Lake Clarity

Classification of lake clarity, a key indicator of water quality, using Landsat satellite imagery has proven to be an accurate and economical method to monitor the condition of lakes in Minnesota. Five classifications at approximately five-year intervals over a 20-year period from 1985 to 2005 provide an unprecedented assessment of lakes in terms of number of lakes and geographic and temporal extent for analysis of temporal and geographic patterns and trends, and relationships to land use and other factors that may cause changes in lake quality. Data for all lakes and years are available in the LakeBrowser, a web-based mapping tool that enables searches and display of results for individual lakes at: http://water.umn.edu

Land Cover and Impervious Surfaces

A second project has focused on mapping land cover and impervious surface area. Conversion of rural landscapes to urban and developed land uses is leading to increasing amounts of impervious surface area and stormwater runoff to streams and lakes. Imperviousness is related to water quality of surrounding lakes and streams, to urban heat island effects, habitat degradation and fragmentation, and aesthetics of landscapes. Classifications of impervious surface area have been completed for the state for 1990 and 2000, and for 1986, 1991, 1998 and 2002 for the Twin Cities metro area. Maps and statistics derived from the classifications are available by county, city, ecoregion, watershed and lakeshed, in a web-based mapping application at: http://land.umn.edu.