This grant was be used to continue survey and management of knotweed species on the upper reaches of the Nooksack River. Knotweed is an invasive plant which alters the function of river ecosystems, affecting fish and the food web on which they depend. The work done was an expansion of effort which began in 2004 and has continued on a smaller scale with very limited local funding. The US Forest Service has been a long-term cooperator in this effort and is committed to continue knotweed treatments on their properties. Management focused on upstream patches, working systematically downstream. The ongoing inventory of knotweed sites shows scattered populations which could easily expand if left unmanaged. Because of the satellite nature of the populations being small and scattered in remote areas, the revegetation will be allowed to occur as a natural progression. The work areas are largely undisturbed, except for the presence of knotweed, and have a diversity of deciduous and coniferous trees, shrub and herbaceous understory. We worked successfully towards eliminating knotweed in the following areas: North Fork downstream to Maple Falls; Middle fork downstream to Canyon Creek; and South Fork downstream to Hutchinson Creek. The goals were to prevent knotweed's expansion into uninfested areas upstream and prevent potential reinfestation of areas downstream.