Adelphi, Ohio is a small community located in Ross County. The climate in Adelphi is classified as humid continental, with warm summers and cold winters. The area is known for its abundance of water resources, including numerous creeks and streams. Hydrology constituents in the area include nitrate, phosphate, and sediment, which can impact water quality. Outdoor recreation opportunities in Adelphi include hunting, fishing, camping, and hiking in the nearby Tar Hollow State Forest. The forest offers 16 miles of hiking trails, as well as opportunities for birdwatching and wildlife observation. Overall, Adelphi is a rural community with ample natural resources and outdoor recreation opportunities.