Abstract: The Osage River-Gasconade River drainage divide area in Osage, Miller, Maries, and Pulaski Counties, Missouri was eroded by immense south oriented floods which were captured and diverted to flow in southeast, east, and northeast directions by headward erosion of deep north-oriented Missouri River and Osage River tributary valleys. Headward erosion of the deep east-oriented Missouri […]
Tag archives for Physical Geography
Abstract: The Missouri River-Gasconade River drainage divide in Osage and Gasconade Counties, Missouri is the drainage divide between the northeast and east oriented Missouri River and the Gasconade River, which is a northeast and north-northeast oriented Missouri River tributary. The Missouri River-Gasconade River drainage divide area was eroded by immense south-oriented floods derived from a […]
Abstract: The Floyd River-Little Sioux River drainage divide area in Woodbury and Monona Counties, Iowa is located in northwest Iowa and the Floyd River and Little Sioux River are south-southwest oriented Missouri River tributaries, with the Floyd River being located north and west of the Little Sioux River. The south-southeast oriented Missouri River is located […]
Abstract: This essay uses topographic map evidence to illustrate and discuss landform origins in the Floyd River-Little Sioux River northern drainage area located in northwest Iowa. A separate essay illustrates and discusses landform origins in the Floyd River-Little Sioux River drainage divide area in Woodbury and Monona Counties. The Floyd River and Little Sioux River […]
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 […]
Abstract: This essay uses topographic map evidence to interpret Little Sioux River-Boyer River drainage divide area landform origins. The Little Sioux and Boyer Rivers are located in western Iowa and are southwest and south-southwest oriented Missouri River tributaries. Between the Little Sioux River and Boyer River are the south and southwest oriented Maple River and […]
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 […]
Abstract: Topographic map evidence is used to interpret the Platte River-Thompson River drainage divide area located in Adair, Union, Ringgold, and Decatur Counties, Iowa. The Grand River is a south-southwest, southeast, and south oriented Missouri River tributary which originates between the south-southwest oriented Platte River drainage basin and the south-southeast oriented Thompson River drainage basin […]
Abstract: Topographic map evidence is used to interpret landform origins in the Chariton River-Grand River drainage divide area located in Lucas, Decatur, and Wayne Counties, Iowa. The Chariton River flows in an east, northeast, and southeast direction in south central Iowa before entering the state of Missouri and then flowing in a south direction to […]
Abstract: Topographic map evidence is used to interpret landform origins in drainage divide areas between Chariton River tributaries and between the Chariton River and Mississippi River tributaries located in Appanoose County, Iowa. The Chariton River flows in a southeast and south-southeast direction across Appanoose County and south of Appanoose County flows in a south direction […]
Abstract: Topographic map evidence is used to interpret Missouri River-Platte River drainage divide area landform origins in Buchanan and Platte Counties, Missouri. The Platte River referred to in this essay originates in southern Iowa and flows in a south direction into northwest Missouri and then into eastern Buchanan County where it flows in a south […]
Abstract: Topographic map interpretation techniques are used to interpret drainage divide origins in the One Hundred and Two River-East Fork Grand River drainage divide area located in Nodaway, Worth, and Gentry Counties, Missouri. The study region is located in northwest Missouri along and/or near the Iowa-Missouri state line. Multiple south-oriented Missouri River tributaries, including the […]
Abstract: Topographic map interpretation methods are used to interpret landform origins in the Platte River-Grand River drainage divide area of Gentry, Andrew, and De Kalb Counties, Missouri. The Platte River is a south-oriented Missouri River tributary flowing through eastern Andrew County and has south-oriented tributaries originating in southwest Gentry County and flowing through western De […]
Abstract: Topographic map interpretation methods are used to interpret Platte River-Missouri River drainage divide area landform origins in Clinton and Clay Counties, Missouri. Clinton and Clay Counties are north of the southeast and east oriented Missouri River in the Kansas City, Missouri region and west of the south oriented Platte River, which joins the Missouri River […]
Abstract: Topographic map interpretation methods are used to interpret landform origins in the Shoal Creek-Missouri River drainage divide area located in Caldwell, Ray, and Carroll Counties, Missouri. Shoal Creek is a north-northeast and east oriented tributary to the southeast and south-southeast oriented Grand River, which flows to the east-northeast and southeast oriented Missouri River near Brunswick, […]
Abstract: Topographic map interpretation methods are used to determine landform origins in the Gand River-Missouri River drainage divide area of Livingston and Carroll Counties, Missouri. The Missouri River flows in an east-northeast direction along the Carroll County southern border while the Grand River flows in a southeast direction across Livingston County and then in a […]
Missouri River drainage basin landform origins research project 