In 1996, the National Park Service (NPS) restored a 100-yard section of Lobos Creek in San Francisco. In this study, we evaluated the presence of invasive species within the Lobos Creek restoration project. The restoration site is not actively managed by any organization or volunteer group. Our research is unique in that it is a comparison between an unmanaged restoration site and an actively managed area along the same creek. Our project takes into account the historical land use changes within the area to provide context on how plant communities have been impacted. We found that the unmanaged Lobos Creek restoration site has reduced the presence of invasive species, in comparison to the managed and unrestored upstream portions of the creek.