A geomorphic history based on topographic map evidence Abstract: This essay provides an overview more detailed essays using topographic map evidence to interpret Big Sioux River drainage basin landform origins. The detailed essays can be found under Big Sioux River on this website’s sidebar category list. All interpretations in this overview essay and in the […]
Category archives for Minnesota
A geomorphic history based on topographic map evidence Abstract: The Big Sioux River-Minnesota River drainage divide area is located in eastern South Dakota and western Minnesota, USA. The Big Sioux River flows south on the Prairie Coteau upland and eventually joins the Missouri River at the South Dakota’s southeast corner. The Minnesota River originates along […]
A geomorphic history based on topographic map evidence Abstract: The Big Sioux River-Minnesota River drainage divide area discussed here is located in Brookings County, South Dakota and Lincoln and Lyon Counties, Minnesota, USA. Major landforms include the Prairie Coteau upland surface and the northeast-facing Prairie Coteau escarpment. The Prairie Coteau escarpment is interpreted here to […]
A geomorphic history based on topographic evidence Abstract: The Big Sioux River-Rock River drainage divide area is located in southeastern South Dakota, the Minnesota southwest corner, and the Iowa northwest corner. Rock River is a south and south-southwest oriented tributary to the south-oriented Big Sioux River. Topographic map evidence suggests the Rock River valley eroded […]
A geomorphic history based on topographic evidence Abstract: The Rock River-Des Moines River drainage divide area is located in southwest Minnesota, USA. The Rock River flows south to the south-oriented Big Sioux River. The Des Moines River flows in a southeast direction along the crest of the northeast-facing Prairie Coteau escarpment and eventually joins the […]