Aquatic plants -- Lake Roosevelt National Recreation Area (Wash.) -- Mapping, Invasive plants -- Lake Roosevelt National Recreation Area (Wash.) -- Control
Ten North Umpqua Hydroelectric Project impoundments were surveyed for aquatic invasive species during the summer of 2012. One non-native submersed aquatic vegetation species (Potamogeton crispus) and one non-native snail species (Radix auricularia) was detected. No crayfish or mussel veligers were collected and no non-native zooplankton species were encountered.
Miller, Rich; Sytsma, Mark D.; and Morgan, Vanessa Howard, "Aquatic Invasive Species Surveys of Pacificorp’s North Umpqua River Impoundments" (2013). Center for Lakes and Reservoirs Publications and Presentations. 27.