Northern Subbasin Overview
The Northern Subbasin includes the complete drainage area of the North Fork of Ten Mile River. This subbasin is contained within Mendocino County. The western two thirds of this subbasin are characterized by a forested landscape of rugged, steep, sharp-crested ridges and narrow stream valleys. The eastern third of the subbasin is sparsely forested with mixed hardwood and conifers interspersed with grassland/meadows. The topography of the eastern third of the basin is noticeably subdued compared with the western. Stream elevations range from approximately 50 feet at its confluence with the mainstem of Ten Mile River to approximately 3,240 feet in the headwaters of the tributaries (Strong Mountain). The subbasin encompasses about 39 square miles, occupying 33 percent of the total assessment basin area.
There are no towns within this subbasin. The Northern subbasin is mostly held by timber companies who manage it for timber production and in scattered private parcels commonly less than 40 acres, by ranchers and residences. Fish surveys of the streams in this basin have identified the presence of Coho, Steelhead, and Chinook salmon.
The climate of this subbasin is dominated by the coastal marine layer giving this area mild, foggy summers and wet winters.