Kurt D Carpenter



Kurt joined the USGS Oregon Water Science Center in 1992 to work as a biologist for the National Water Quality Assessment (NAWQA) Program. For his graduate work in limnology at Portland State University, Kurt investigated phytoplankton-nutrient interactions in lakes within the Mount St. Helens blast zone to track their recovery since the 1980 eruption. Since then, Kurt's research focus has been on the effects of nutrient enrichment (eutrophication) and impacts on drinking water quality and aquatic food webs in the Clackamas, Tualatin, Molalla, North Santiam, North Umpqua, and Yakima Rivers. In 2008, Kurt completed a drinking water study on the Clackamas River with a particular emphasis on pesticides. More recently, Kurt examined sources of organic carbon that contribute to disinfection by-products in treated drinking water from the Clackamas River, and investigated the dynamics of algal populations and bloom crashes in the Tualatin River. Kurt is currently conducting a study of current-use pesticides in urban streams and stormwater outfalls in Clackamas County.