The Columbia Slough is a narrow waterway, about 19 miles (31 km) long, in the floodplain of the Columbia River in the U.S. state of Oregon.

The Columbia Slough Watershed is a 60-mile drainage area with 19 miles of navigable waterways that support an urban landscape of 170,000 residents, 4,200 businesses, along with river otters, painted turtles, and Bald Eagles.

The Columbia Slough is a slow moving and easy-to-canoe waterway. Its 20-plus miles of channels are home to river otters, painted turtles, and bald eagles. It also supports 170,000 residents and 4,200 businesses.

The Columbia Slough is approximately 19 miles long and stretches from its origin at Fairview Lake westward to its confluence with the Willamette River. In spite of its urbanized character, the Columbia Slough contains surprising biodiversity.

The Columbia Slough runs parallel to the Columbia River and includes about 31 miles of waterway from the Willamette River to Fairview Lake. Industrial, agricultural and urban development along the Columbia Slough has resulted in contamination accumulating in the bottom of the slough.

The Columbia Slough is a narrow waterway, about 19 miles long, in the floodplain of the Columbia River. The Columbia Slough is a remnant of the historic wetlands between the mouths of the Sandy River to the east and the Willamette River to the west.

Our watershed: a tapestry of waters, cultures, and wildlife. The Columbia Slough watershed drains 32,700 acres of land in Multnomah County and portions of the present-day municipalities of Fairview, Gresham, Maywood Park, and Wood Village.

The Columbia Slough Watershed Council brings community members together to enhance the hidden gem we call the Columbia Slough. We improve water quality, heal damaged fish and wildlife habitat, increase public awareness, and advocate for a healthy watershed.

2024年12月5日 · The Columbia Slough is a nearly 20-mi chain of narrow waterways and ponds that stretches almost continuously from Kelly Point (at the confluence of the Willamette and Columbia Rivers) to Fairview Lake in Fairview.

The Upper Columbia Slough, shown in Figure 2, was historically maintained to provide irrigation water to agricultural and commercial users in the summer months. The Upper Slough is connected by pipes and an overflow weir during the Fall, Winter, and Spring to Fairview Lake .