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

 

 

2006 High Resolution Orthoimagery for Most of the Twin Cities

Cooperative efforts between the U.S. Geological Survey (USGS) and the National Geospatial-Intelligence Agency (NGA) have yielded high resolution orthoimagery in recent years that support NGA's homeland security mission and The National Map of the USGS. Previous imagery acquired in 2002 and 2004 has been archived at the USGS National Center for Earth Resources Observations and Science (EROS) in Sioux Falls, SD. The Seamless Data Distribution System (http://seamless.usgs.gov/) continues to provide viewing and download access (limited volume) of the imagery. Additionally, the imagery is included in The National Map Catalog and is also accessible through The National Map viewer (http://nationalmap.gov/) for viewing and download.

The USGS signed Cooperative Agreements with Hennepin and Ramsey Counties to provide supplemental funding to acquire new orthoimagery in 2006 (see Newsletter article in the Local section of the Winter 2005-06 edition). Additional metro coverage was contracted by the USGS to support Homeland Security Infrastructure Program activities by federal agencies for the Minneapolis/St. Paul urban area. In spring 2006, natural color imagery was acquired through the USGS contract with a spatial resolution of 0.3 meters (approximately 1 foot pixels). The design accuracy was estimated not to exceed 3-meter diagonal RMSE (2.12m RMSE in X or Y). The imagery was processed in the UTM coordinate system with a NAD83 datum.

The orthoimagery acquisition for the Twin Cities area involved three different contracts with different vendors. Technical difficulties have caused a delay in completing the Hennepin County imagery. Coverage of the currently available imagery is identified in the graphic below. The remaining imagery should be completed this spring and hosted at EROS by early summer 2007.

The USGS and NGA desire to have orthoimagery for the Twin Cities and other Urban Areas acquired every two years to maintain currency. There are preliminary plans to consider partnership opportunities with local and regional agencies to acquire new imagery again in 2008. Interested parties should contact Ron Wencl at rwencl@usgs.gov or 763-783-3207.