Abstract: This essay uses topographic map evidence to interpret landform origins in the Boyer River-Mosquito Creek drainage divide area located in Pottawatamie, Harrison, Shelby, and Crawford Counties, Iowa. The Boyer River and Mosquito Creek are south-southwest oriented Missouri River tributaries located in western Iowa with the Boyer River located north and west of Mosquito Creek […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Boyer River-Nishnabotna River drainage divide area located in Crawford, Carroll, Shelby, and Audubon Counties, Iowa. Evidence presented and discussed also includes regions between Nishnabotna River tributaries located in the four counties. The Boyer River and Nishnabotna River are southwest and south-southwest oriented Missouri […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Mosquito Creek-East Nishnabotna River drainage divide area located in Pottawattamie, Cass, Mills, and Montgomery Counties, Iowa. Mosquito Creek is a south-southwest oriented tributary joining the Missouri River at Council Bluffs, Iowa. The south-oriented Nishnabotna River is located east of Mosquito Creek and […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Missouri River-Tarkio River drainage divide area located in Fremont and Page Counties, Iowa and Atchison County, Missouri. The Missouri River flows in a south-southeast direction along the Fremont and Atchison County western borders. The Tarkio River and its major tributaries flow in […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Tarkio River-Nodaway River drainage divide area located in Atchison, Holt, and Nodaway Counties of northwest Missouri. The Tarkio and Nodaway Rivers are two of several rivers which originate in southwest Iowa and flow in south-southwest and/or south directions to join the southeast-oriented […]
Abstract: This essay uses topographic map evidence to interpret landform origins in the Nodaway River-One Hundred and Two River drainage divide area in Andrew and Nodaway Counties, Missouri. The Nodaway and One Hundred and Two Rivers originate in southwest Iowa and flow into northwest Missouri as south oriented rivers. The Nodaway River flows across Nodaway and […]
Abstract: This essay uses topographic map evidence to interpret landform origins for the West Nodaway River-Platte River drainage divide area located in Page, Taylor, Ringgold, and Adams Counties, Iowa. The West Nodaway River flows in a south direction across eastern Page County to join the southwest and south oriented East Nodaway River and to form the […]
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 