Natural drainage class (namely, poor, imperfect, and well drained) and slope class are estimated for Iowa counties through a 2% ¼-section sample soil survey. Estimate of soil drainage class is given also by slope class. Counties vary widely in the amount of poorly drained soils. Kossuth County has 56.4% of poorly drained soils, while Allamakee has less than 1%. Land use management and conservation considerations are discussed briefly.
Proceedings of the Iowa Academy of Science
©1970 Iowa Academy of Science, Inc.
Runge, E. C. A.; Dideriksen, R. I.; and Riecken, F. F.
"Distribution of Soils by Natural Drainage Class and by Slope Class for Iowa Counties,"
Proceedings of the Iowa Academy of Science, 77(1), 61-85.
Available at: https://scholarworks.uni.edu/pias/vol77/iss1/12