Jackson Bottom Wetlands Preserve in Hillsboro, Oregon, United States, is a 725-acre (293 ha) wetlands area along the Tualatin River in Washington County, Oregon. Located on the south end of the city along Highway 219, this lowland area is a designated Important Bird Area and hosts such birds as Buffleheads, Dusky Canada Geese, and Tundra Swans.
This area contains forest areas along the river bank, a forested wetland area, ponds, marshes, meadows, slough areas, and a forest section of mixed deciduous and conifer trees. Jackson Bottom is home to a diverse group of plant and animal species. Animals that call the wetlands home include beavers, minks, nutria, ducks, blue and green herons, warblers, frogs, owls, red-tailed hawks, woodpeckers, opossums, deer, raccoons, newts, sparrows, finch, coyotes, and many other small rodents, birds, and reptiles. Migratory waterfowl include Northern Pintails, Canvasbacks, Blue-winged Teal, Green-winged Teal, Dusky Canada Geese, and Tundra Swans. Plant life there includes, reed canary grass, dogwood trees, Douglas fir, white oak, cocklebur, Columbia River sedge, red willow, Oregon ash, and other grass and tree species. Human oriented features of Jackson Bottom include hiking trails, an education center, environmental monitoring and research, and bird watching.