Abstract: The Little Sioux River-North Raccoon River drainage divide area in Cherokee, Buena Vista, and Sac Counties, Iowa was eroded during immense south oriented floods from a rapidly melting North American ice sheet. Initially the melt water floods flowed across Cherokee, Buena Vista, and Sac Counties in a southeast direction toward what was then an actively […]
Category archives for Des Moines River
Abstract: This essay uses topographic map evidence to interpret landform origins in the Des Moines River-Nisnabotna River drainage divide area located in Audubon and Guthrie Counties, Iowa. More specifically the Audubon and Guthrie County drainage divide is between headwaters and tributaries of the southeast-oriented Middle River (which is a Des Moines River tributary) and headwaters […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Des Moines River-Grand River drainage divide area located in Adair, Madison, Union, and Ringgold Counties, Iowa. The major drainage divide observed in the four county study region is the Middle River-Thompson River drainage divide, where the Middle River is a southeast and […]
Abstract: Topographic map evidence is used to interpret Des Moines River-Missouri River drainage divide area landform origins in Clarke, Lucas, and Monroe Counties, Iowa. Major Missouri River tributaries in the Clarke, Lucas, and Monroe County region are south-southeast oriented Thompson River and southeast oriented Chariton River with its east oriented Chariton Creek headwaters. Directly north of the […]
Missouri River drainage basin landform origins research project 