Troutdale sits at the western mouth of the Columbia River Gorge, where winter east winds hit first. We build fences with the posts, spacing and materials to stay standing, within the city's 4-foot and 7-foot limits.
NOAA describes the Troutdale airport as sitting at the western end of the Columbia River Gorge, where late-autumn and winter east winds funnel out toward Portland. A solid wood fence takes that wind like a sail. Most fence failures we see after a wind event start at the posts, not the boards.
Troutdale's code lets residential fences reach 4 feet in a required front yard setback and 7 feet in side and rear setbacks. No permit is needed for a fence within those limits. In clear vision areas at corners and driveways, nothing can stand over 3 feet above the curb.