Allochthonous input is an important source of food and energy to stream systems (Culp and Davies 1985, Hollingsworth 1988, Alan 1995, May et al. 1997, Webster et al. 1999, Wenger 1999, Wipfli and Gregovich 2002, Cole et al. 2003, MacKenzie and Moran 2004, Muto et al. 2009), and a primary component of organic material in small headwater streams (Lowe et al. 1986, Hollingsworth 1988). In this project we measure vertical allochthonous inputs to small headwater streams to quantify the relationships between vertical allochthonous inputs and riparian characteristics to better understand the implications of riparian forest management. Starting in 2003, we annually monitored the amount (mass (g)), nutrients (amount (mg) and concentration (mg/g) of Potassium, Nitrogen and Phosphorous), and composition (wood, needles, cones, leaves and other organic material) of allochthonous material that is naturally introduced vertically into small streams from a coastal temperate rainforest in Clayoquot Sound, British Columbia (BC). The study is divided into four components: different variable retention (VR) timber harvest regimes, a chronosequence study of different age classes of second growth conifer forest, three deciduous riparian vegetation types (RVT), and an intact late seral (old growth) forest control.