<div align="center">     [The NGDC header and web page search is in an undisplayed frame - follow this link to view it]<br /><br />    </div>   NOAA > NESDIS > NGDC       > MGG > bathymetry       > Great       Lakesprivacy       policyAll       MGGCoastalFishingGlobalLakesMultibeamNOS surveysTracklineU.S. Department of Commerce National       Oceanic and Atmospheric Administration National Environmental       Satellite, Data and Information Service (NOAA/NESDIS)Bathymetry of Lake Erie and Lake Saint Clair       CD-ROMOn-line sample
CD-ROM ordering       information
INTRODUCTION
New bathymetry of Lake Erie and Lake Saint Clair has been compiled as a       component of a NOAA project to rescue Great Lakes lake floor geological       and geophysical data and make it more accessible. This project is a cooperative       effort between scientists at the NOAA National Geophysical Data       Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA       Great Lakes Environmental Research Laboratory (GLERL) and the Canadian       Hydrographic Service (CHS). 

A high quality bathymetric map is of great value for geological and       limnological studies. Modeling of lake circulation and sediment transport,       and predicting the effects of climate change and toxic waste remediation       on lake physiography are only a few examples of tasks that can be done       better and more accurately with the availability of a high quality base       map. Several lake floor feature names mentioned in the text and present on       the images have recently been approved by the U.S. Board on Geographic       Names. 

Bathymetric data has been collected from the Great Lakes in support of       nautical charting for at least 150 years by the U.S. Army Corp of       Engineers (before 1970), the NOAA National Ocean Service (NOS) (after       1970), and the Canadian Hydrographic Service. Until now, the entire array       of historic soundings had never been used to systematically map the       topography of the floors of Lake Erie and Lake Saint Clair. The digital       sounding data for U.S. waters used in this compilation are from the       National Ocean Service Hydrographic Data Base (NOSHDB). 

This data base is maintained by NGDC in conjunction with NOS and       comprises the majority of NGDC's area survey holdings providing extensive       survey coverage of the coastal waters and Exclusive Economic Zone (EEZ) of       the United States and its territories. 
Lake Erie and Lake Saint Clair Bathymetry Products and       Services Available
Custom color images are available for all or any portion of the lakes       at various scales and projections. In addition, a 26"x50" color poster       displaying the bathymetry of Lake Erie and Lake Saint Clair at a scale of       1:350,000, a 22"x27" color poster displaying the bathymetry of western       Lake Erie at a scale of 1:200,000, and a 11"x17" color mini-poster       displaying the bathymetry of Lake Erie and Lake Saint Clair, as well as       copies of this CD-ROM, can be ordered using Data Announcement 98-MGG-01. 
For more information contact:Lisa A. Taylor National Geophysical Data Center         Marine Geology & Geophysics Division E/GC3 325 Broadway         Boulder, CO 80303 phone: 303-497-6767 fax: 303-497-6513         email: Lisa.A.Taylor@noaa.gov WWW:         Great Lakes Data Rescue Page URL: http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html
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