2010-01-042011-12-122010-01-042011-12-121999-052010-01-0461773221http://hdl.handle.net/2152/6792engNonpoint source pollution -- Oregon -- Tillamook BayBest management practices (Pollution prevention) -- Oregon -- Tillamook BayWater quality -- Oregon -- Tillamook Bay -- MeasurementGeographic information systems -- Oregon -- Tillamook BayA GIS based watershed analysis system for Tillamook Bay, OregonThesis