During the winter of 1950 Mr. Zimmerman undertook the study of the drainage of western Story County. His first concern was that of an adequate base-map. This problem he solved by tracing the drainage from air photos of the area involved in the study. It was during this phase of the research that we discovered the full-scale working-model of some of the very experiments conducted by the Army Engineers at Vicksburg, Mississippi. The experiments were in effect detailed studies of the causation of meandering in rivers. Scale models of various situations were carefully constructed, then tested and the results noted and discussed in a report written by Captain J. F. Friedkin. Among the factors so tested was the effect of the initial angle of attack, or alignment of the flow of water into a straight channel, on the size of meanders (bends) developed. It was found that as the angle of attack increased, the length of the meander (bend) decreased and its width increased; that is, the greater the angle of attack the shorter were the radii of the meanders (bends) which developed.
Proceedings of the Iowa Academy of Science
©1953 Iowa Academy of Science, Inc.
Hussey, Keith M. and Zimmerman, H. L.
"Rate of Meander Development as Exhibited by Two Streams in Story County, Iowa,"
Proceedings of the Iowa Academy of Science, 60(1), 390-392.
Available at: https://scholarworks.uni.edu/pias/vol60/iss1/49