The LiDAR flights were made in the Fall of 2013 and in the Spring
of 2014. The data was processed and analyzed and is now available to
the public. Through the cooperative effort with the Natural
Resources Conservation Service, Logan County now has some of the
most accurate LiDAR data in the State of Illinois.
The LiDAR data was used to create elevation contours at one-foot
intervals for all of Logan County. Anyone interested in viewing
contour data can use the internet mapping website at
www.co.logan.il.us/gis/. The contour layer can be found under the
Environmental folder and can be turned on by clicking the empty box.
For information on how to obtain the entire LiDAR dataset for Logan
County, please contact Will D’Andrea (217-732-4773).
[to top of second column]
LiDAR data can be used to determine drainage patterns, which can be difficult to
determine in flat terrain. NRCS will be using this data to identify farmland for
improved drainage water management practices, which can help to improve water
quality by reducing nutrient runoff. Real estate developers will find the data
useful since engineers can quickly estimate site development costs. The data
will also be helpful for local landowners in determining drainage. Homeowners
and lenders will be able to easily compare building site elevations with
[Will D’Andrea, GIS Coordinator]