Thomas Jefferson's landholdings in Albemarle County totaled some 5,000 acres. To manage this vast estate, Jefferson divided the land into separate "farms." The area surrounding the planter's dwelling constituted the "home farm"; for Jefferson, this was Monticello mountain. Outlying lands were divided into manageable parcels known as "quarter farms" and were run by resident overseers. Thomas Jefferson's quarter farms were Tufton (adjacent to Monticello), Shadwell, and Lego (both north of the Rivanna River, which bisected his landholdings). Jefferson sought to further organize his farms by dividing them into agricultural fields of forty acres each.