Urban watersheds are complex systems that rely on strong partnerships to balance development needs with natural resource management and protection. Until , the Columbia Slough was connected to the Columbia River floodplain. The annual water would carve slough channels and fill up lakes and wetland areas. In the summer, the Columbia floodplain would dry out. The flood waters were unpredictable and made the land along the Columbia difficult to cultivate and develop. This photo was taken one hundred years ago at the place along the Columbia River where flood water overflowed into the head of the Columbia Slough.
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It includes milestones of City programs; events that affected the growth and development of the City; people and organizations which have served citizens; and events such as wars, fires, and floods that have affected life in Portland. The timeline includes links to history pages on the web sites of individual bureaus and programs where more detailed information can be found concerning specific functions.
Written materials and on-line resources on City history have also been provided by staff of City bureaus and commissioners' offices. The right-hand column of the Timeline identifies the bureau which provided the information.
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