My research focuses on the influence of human activities along river systems. My current work examines the influence of the U.S.-Mexico Border Fence on the fluvial geomorphology of the Rio Grande River. Other recent work along the Provo River, Utah, focused on the influence of Jordanelle Dam on channel features and vegetation distribution as well as the influence of native vegetation on sediment deposition and habitat characteristics within the Tijuana River Estuary south of San Diego, CA. In my masters work at Texas A&M , I investigated the influence of dams on the sediment regime of river systems and employed GIS to ascertain differences in channel form after dam construction. During my Ph.D. research at the University of Oregon I study the interactions between riparian vegetation and stream channels.