Willamette River below Falls at Oregon City

45' - major flooding of homes and industrial areas in Gladstone and West Linn has historically occurred at this and higher stages. Also expect flooding of the shopping district and other businesses along the Willamette River in Oregon City adjacent to I-205.

40' - major flood stage, numerous homes are threatened with flooding in the vicinity of West Linn and Marylhurst along River St, and also in the Oak Grove area. Expect widespread flooding of lowland areas, parks, roads and a few structures along the Willamette River from Oregon City to Portland.

35' - moderate flood stage, expect widespread flooding of low lying areas along the Willamette River from Oregon City to Portland. Clackamette Park at the confluence of the Clackamas and Willamette Rivers is flooded at this and higher stages.

32' - islands on the Willamette River between Oregon City and downtown Portland begin to flood. Lowland flooding along the river becomes more widespread at this level.

27' - flooding begins in low lying areas along the Willamette River from Oregon City downstream to Lake Oswego. The areas mainly impacted at this level historically have been lows areas in Clackamette Park in Oregon City and River Green Golf Course and Dahl Park in Gladstone.