Inland Subbasin Overview

The Inland Subbasin is the largest of the Big River Subbasins. Additionally, land use impacts in this subbasin occurred later in time than the other two subbasins due to its location further inland, away from easy ocean access. Much of this subbasin is owned and managed by the JDSF and large timber companies. Salmon and steelhead habitat conditions in the Inland Subbasin are generally degraded, but support some salmonid production. Salmonid populations are currently being limited by reduced habitat complexity, high water temperatures, low summer stream flows, embedded spawning gravels, and artificial passage barriers. However, historical accounts indicate that stream conditions were favorable for salmonid populations in the past.

There are many opportunities for improvements in stream conditions in this subbasin as well as a great need to restore areas of stream refugia. Surveys by landowners, water temperature monitoring, riparian canopy restoration, improvements to channel complexity such as additional LWD are examples of such opportunities. The stability and erosiveness of terrain should be considered before project implementation and appropriate BMPs should be followed to minimize erosion and sediment delivery to streams. Conditions beneficial to salmonids may be further enhanced in this subbasin through encouraging all motivated subbasin landowners to use good land stewardship practices and enlisting the aid and support of agency technology, experience, and funding opportunities.

Big River - Inland Subbasin 

Upper South Fork Big River Watershed (May 2001)
Photo by Bill Lydgate in KRIS.