Google Earth Pro was a free download, and it will do odd polygons, and give sizes. I have used it to compute the sizes of nearly all the ponds in my neighborhood. Don't know if it's still free, you can try.

Our area updates every year, as the county is tax hungry and pays for it. They use the aerials to find new land improvements and buildings.

Last edited by John F; 08/12/17 07:44 PM.