The Coweeman River offers a unique opportunity to enhance fish productivity in the Lower Columbia River in a watershed where three primary species (Chinook, coho, and steelhead) have access to the headwaters without impairment from dams or waterfalls. The headwaters are also entirely managed by a single landowner, Weyerhaeuser. Despite the enhancement potential, no recent efforts had been undertaken to improve the quality and quantity of fish habitat in the headwaters portion of the Coweeman River and its tributaries since Weyerhaeuser and WDFW completed a near-term treatment in the late 1990s; most of which is no longer present today. Historic forestry practices of splash damming and dynamiting of in-stream boulders in both Baird Creek and the mainstem removed natural roughness elements and flushed much of the large wood and mobile bed material from the upper reaches. Re-accumulation of wood and gravel has been inhibited by the lack of new recruitment of large, mature conifers that act as key habitat features capable of creating and maintaining log jams in this high-energy environment. As a result, reaches that previously contained mixed bedrock-alluvial channels now flow over bedrock, limiting the quantity of available spawning and rearing habitat. Although the upper watershed contains abundant supplies of cold water and suitable-sized sediment, the limited wood supply and corresponding roughness elements prevent the accumulation of bed material, limiting the productivity of salmon and steelhead. In addition, summer stream temperatures downstream of the project area are uniquely high in Coweeman River as compared to other Lower Columbia watersheds. The primary goal of this project was to re-introduce complexity and hydraulic roughness, thereby increasing planform variability which supports pool formation, development of spawning beds, and other critical habitat elements. Anecdotal results show a positive response from coho salmon and steelhead who are spawning in many locations in Baird Creek where there was previously no spawning habitat available.