Welcome to the Great Lakes Coastal Flood Study website at greatlakescoast.org. This is the official public website for FEMA's comprehensive storm and wind study of the Great Lakes basin for the purpose of updating the coastal flood hazard information and Flood Insurance Rate Maps (FIRM) for Great Lakes coastal communities. This is the main page of the website and contains the most recent content posted to the site. Use the menu at the left to visit pages with additional content pertaining to the Great Lakes Coastal Flood Study.

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New Bathymetric Lidar for the Lake Superior Shoreline

Now available on the Digital Coast – 900 linear kilometers of bathymetric lidar for Lake Superior!

NOAA Lake Superior Lidar

Using funding from the EPA Great Lakes Restoration Initiative, NOAA Coastal Services Center worked with regional stakeholders, including state agencies, federal agencies, regional working groups, international management bodies, and tribes, to determine the priority areas for collection. The data set was contracted for collection by FUGRO LADS, and excellent communication between CSC and the contractor maximized the quality of the end product. This data set will be critical to the success of many restoration projects, modeling of lake level change, and any analysis that requires a seamless elevation surface above and below the water.

To access the data set, visit http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?keyword=lidar or, for more information, contact Lindy Betzhold.

Comprehensive Elevation Inventory for the United States Now Available

News from NOAA Coastal Services Center:

Topographic and Bathymetric Data Inventory:
http://www.csc.noaa.gov/topobathy/

The first comprehensive inventory of elevation data sets for the nation is now available. NOAA and FEMA have worked together to inventory elevation data, both topographic and bathymetric, for all 50 states and Puerto Rico.

The NOAA inventory initially focused on coastal elevation data, and a partnership with FEMA allowed expansion to the interior of the country. The inventory’s data viewer provides

  • searching of the NOAA and FEMA inventories,
  • enhanced functionality to create data reports,
  • new zooming capabilities,
  • printable custom maps of elevation resources,
  • an innovative design for displaying information about data sets, including quality, and
  • direct links to the data source whenever available.

The inventories can be used not only to locate the data needed when developing elevation models, but also to discover where data gaps exist. The data sets and data quality information found in these inventories are critical components of efforts to address issues related to flooding, beach nourishment, and erosion.

NOAA Topobathy

The NOAA inventory includes both topographic and bathymetric data and covers many coastal areas of the nation. This inventory represents data sets found during an exhaustive search for elevation data and portrays a snapshot in time of the elevation resources for a region. The FEMA inventory includes topographic data and covers the entire nation, including Puerto Rico. This effort was conducted January through June 2010 to support FEMA’s internal planning. It focused primarily on large data sets available for an area rather than an all-inclusive collection.

The next steps for this project are to incorporate information verification done by U.S. Geological Survey liaisons and combine the inventories for a single look at elevation resources for the nation.

Explore the site at www.csc.noaa.gov/topobathy/ to find out what elevation data are available for your area, or contact Lindy Betzhold for more information.