 In the center of the western lobe is the long, broad ridge of Owl's Head (4025 ft/1227 m), which rises abruptly from the valley of Lincoln Brook and extends north for roughly 3 miles (4.8 km) to a low saddle connecting it to Garfield Ridge.Almost completely encircling Owl's Head are two tributaries of the East Branch, Lincoln Brook and Franconia Branch; Lincoln Brook drains the east face of Franconia Ridge, while Franconia Branch drains the southern and western faces of the Twin and Bond Ranges through Twin, Redrock, and Hellgate Brooks.The eastern lobe of the Pemigewasset Wilderness follows fewer well-defined topographic features than the western lobe.