2018 Map of Northspur

About this map

The Noyo River and its labyrinth of tributary gulches define the landscape of Mendocino County as documented in this 2018 survey. Deep within the redwood country, small settlements like Northspur, Irmulco, and Alpine sit along the winding riverbanks, connected by historic paths such as Northspur Rd and Irmulco Rd. The terrain is marked by prominent high ground, including Ramsey Ridge to the northwest and Chamberlain Ridge to the southeast, while Three Chop Ridge follows a central divide. A complex network of logging and access roads, such as Fort Bragg-Sherwood Rd and Three Chop Rd, weaves through the steep drainages of Duffy Gulch and Marble Gulch. The map records a geography shaped by the timber industry and river-driven economy, providing a clear picture of the modern road access and drainage patterns across the Jackson State Forest area.