The South Fork of the Palouse River is part of the Palouse River Subbasin and is located in northern Idaho and eastern Washington in what is known as the Palouse Bioregion. The Idaho Department of Environmental Quality is working with local stakeholders to develop the South Fork Palouse River Total Maximum Daily Load in order to assess the water quality in the watershed. The Washington Department of Ecology is also working on their own South Fork Palouse River Total Maximum Daily Load because the South Fork Palouse River flows across the state line. PCEI restoration projects were designed as a result of the TMDL assessment to help reduce pollutants loads in the watershed. PCEI is working with private landowners and the City of Moscow to re-slope and stabilize eroding banks, install riparian fencing, install hardened stream crossings and create wetlands to help filter overland flows.
- South Fork Palouse River Riparian Restoration Project, Fountain Property (June 2008)
- South Fork Palouse River Upper Watershed Restoration Project, Howard Property (July 2005)
- South Fork Palouse River Upper Watershed Restoration Project, Mill Road (July 2005)
- South Fork Palouse River Upper Watershed Restoration Project, Robinson County Park (February 2005)
- South Fork Palouse River Lower Watershed Restoration Project, Moscow Ball Fields Site (September 2003)