World Champion Black Arabian Pinto.

In the 20th century Ashtabula developed rapidly as a major shipping and commercial center because of its access to Lake Erie and nearly 30 miles (48 km) of shoreline. During the 1950s, the area experienced growth with an expanding chemical industry and increasing harbor activity, making Ashtabula one of the most important port cities of the Great Lakes. Other historical industries in the area included a Rockwell International plant on Route 20 on the western side of Ashtabula, which manufactured brakes for the Space Shuttle program, and the extrusion of depleted and enriched uranium at the Reactive Metals Extrusion plant on East 21st Street. Due to such industrial uses, however, there was extensive environmental contamination. The Ashtabula River and harbor were designated as a significant Superfund site by the Environmental Protection Agency in the late 20th century.