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Columbia River: Middle Columbia Slough Professional Review and Guide
"This section of the Columbia Slough stretches from Northeast 143rd to Northeast 18th Avenues, a total of 125 blocks, or about 8 miles. Although this trip is in the midst of a major urban area, watch for otters, nutria, green herons, and owls. This trip may be enjoyed year-round, but the slough accumulates considerable amounts of algae during periods of low water in summer; the best paddling is when water levels are higher."
--Philip N. Jones, Canoe & Kayak Routes of Northwest Oregon (The Mountaineers Books).
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