Chiswick Eyot Chiswick Eyot Chiswick Eyot is a narrow, uninhabited ait (river island) in the River Thames. It is a tree- and reed-covered rise on the Tideway by Chiswick, in the Borough of Hounslow, London, England and is overlooked by St Nicholas Church, Chiswick, the Mall (promenade street) of Hammersmith and by some of the Barnes riverside on the far bank. Excluding tidal mudflats and sandbanks, it is the most downstream island purely on the Thames itself (as the Isle of Sheppey, Canvey Island and two nearby islets in the estuary are co-fed by creeks and in the case of Sheppey by
Columbia River Estuary mouth of the Columbia River. Settlements on the estuary include Astoria and Warrenton in Oregon, and Ilwaco in Washington. The gathering and retail/wholesale distribution of seafood is a prominent local industry and producer of jobs in the estuary. Columbia River Estuary The Columbia River Estuary is an estuary and a bay on the Oregon–Washington border and the Pacific Coast of the United States. If the Columbia River Estuary is defined by the region that experiences ocean tides, then the estuary extends up the Columbia River to Bonneville Dam and up the Willamette River to Willamette Falls (south of Portland at