Keywords: Lake Hamilton Dam.jpg 84003774 41 2 13 N 80 35 30 W Face of the w Lake Hamilton Dam which impounds Yellow Creek in Poland Township Mahoning County Ohio Poland Township Mahoning County Ohio Mahoning County Ohio United States Built in 1906 it is listed on the National Register of Historic Places own 2014-10-14 User Nyttend Nyttend No<nowiki></nowiki>ne Built in Ohio in 1906 Dams in Ohio Gravity dams in the United States National Register of Historic Places in Mahoning County Ohio Poland Township Mahoning County Ohio Stone buildings in Ohio Stone dams Building-centered pictures by User Nyttend |