Frederick Graff

Frederick Graff (1775-1847), a pioneering engineer and architect, made unique and lasting contributions to Philadelphia. In 1805, Graff was elected superintendent and engineer of the Centre Square Water Works, located where Philadelphia City Hall now stands. He later proposed and designed the new Fairmount Water Works. Graff designed and managed the construction of the pipes, pumps, buildings, water mains, dam, canal and locks, garden, and reservoir while ensuring clean drinking water daily. He shared his knowledge widely, assisting in the design of many other water systems in the U.S. Regarded as an outstanding and dedicated public servant, he was succeeded by his son, Frederic Graff, Jr. A circa 1825 drawing shows a proposal for three large water-powered factories adjacent to the Mill House, but those plans were abandoned and the area was developed as the South Garden in the 1830's.

Philadelphia, Pennsylvania · United States