Based on a photo from April 23, 2023.
These are the ruins of a grist mill that was constructed in 1819 between the James River and its canal along the north bank. The mill was destroyed by flooding in 1832, but most of the damage you see here has occurred since the 1950's. Originally this was a 2-story structure with a pointed roof. The water wheel would have been attached on the south wall, facing right in this picture (the side nearest the river).
Dr. William Foushee was a prominent citizen and Richmond's first mayor when it became a city in 1782. He served as president of the company that built a canal to bypass the falls of the river, an important means of transporting goods in the pre-railroad era. A man of many accomplishments, he had been a physician during the Revolutionary War. He sold the grist mill in 1824 to his son-in-law, but the mill only lasted 8 more years.