Contour Maps

Below was created using Google Earth and https://www.gearthblog.com/blog/archives/2016/08/drawing-contours-altitude-data.html

The pond contours below begin at El. 85 in the center with the next two being at El. 86 and 87.

 

Mary’s Springs below shows the lowest contour at the water in the beaver pond of 53.5 then the next is 60 and then in 5′ increments up to 85 with 90 in the center of the high point.