The Ohio River is a 981-mile-long (1,579 km) river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its mouth on the Mississippi River in Cairo, Illinois.

In the present study, certain characteristics of the Ohio River bed rock profile and valley width were found that indicate reversal in direction of flow of the upper Ohio and suggest the location of the divide between the old north-flowing and south-flowing drainage.

5 days ago · Ohio River, major river artery of the east-central United States. Formed by the confluence of the Allegheny and Monongahela rivers at Pittsburgh, it flows northwest out of Pennsylvania, then in a general southwesterly direction to join the Mississippi River at Cairo, Illinois (see photograph),

Geology. The Ohio River is young from a geologic standpoint. The river formed on a piecemeal basis beginning between 2.5 and 3 million years ago. The earliest Ice Ages occurred at this time and dammed portions of north flowing rivers. The Teays River was the largest of these rivers, and the modern Ohio River flows within segments of the ancient ...

The intent of the 3R2N terrestrial study is to describe and document conditions of riverbank geology, accessibility, preservation and restoration potential along the Ohio River in Pools 1, 2, and 3, Allegheny County, Pennsylvania.

This video segment, adapted from Where the River Bends, a KET documentary, shows how climate change and glacier movement during the Ice Ages caused the now-vanished Teays River to move to the south and become the Deep Stage Ohio River.

Jul 19, 2021 · The Ohio River basin covers an area of 490,600 sq. km and drains parts of 14 US States in the Northeast, Mid-Atlantic, Midwest, and Deep South regions. Geology Sunset view over the Ohio River in Pittsburgh, Pennsylvania. Geologically, the Ohio River is relatively young.

To geologists, the Ordovician System of Ohio is probably the most famous of the state’s Paleozoic rock systems. The alternating shales and limestones of the upper part of this system crop out in southwestern Ohio in the Cincinnati region and yield an incredible abundance and diversity of well-preserved fossils.

Geomorphology and Quaternary geology of the glaciated Ohio River valley — A reconnaissance study Professional Paper 826 By: Louis L. Ray

Jan 1, 2023 · The Ohio River basin covers three freshwater ecoregions (Teays-Old Ohio, Tennessee, and Cumberland), two Level 1 terrestrial ecoregions, and six Level II terrestrial ecoregions (Omernik, 1987; Abell et al., 2000; Omernik and Griffith, 2014). The basin lies in the Eastern Temperate Forests and Northern Forests Level l ecoregions.