Flood map
Another very needed map you find here. It will keep you on your toes when being smart to utilize each area according to the amount of water you have, or could have in case of a flood event. A Flood Map will help to do the job, right?
elevation
Elevation Finder
This is super cool website and you can again, find your location, pin points spots in your property and know exactly the elevation variations, identify highest and lowest points and have a fun time!
Contour Map Generator
Understanding the topography on your property is very valuable for many reasons such as elevation and watershed info. Being able to see how the rain water moves in your property is crucial for any project. Find that information by searching your location and generating the contour map on this website.