Blue Earth River (Minn.); Blue Earth County (Minn.); Valleys; Land cover
The boundary of the Blue Earth River Valley was determined by stereoscopic viewing of 1938-39 aerial photographs. The same boundary was then drawn on corresponding 1974 photographs. All area within the river valley was assigned to one of four land-cover. Comparison of 1938-39 to 1974 shows a decrease of 19 percent in river area, an increase of one percent in row crop area, an increase of 52 percent in tree area, and a decrease of 45 percent in scrub area.
Cowley, C. S.
Land-Cover Changes in a River Valley in Blue Earth County, Minnesota, 1938-1974.
Journal of the Minnesota Academy of Science, Vol. 46 No.2, 22-23.
Retrieved from https://digitalcommons.morris.umn.edu/jmas/vol46/iss2/9