Rivers draining the protected Olympic interior are exceptionally clean and cold because their headwaters lie within roadless wilderness, free of agriculture, industry, and development upstream. This unbroken protection from the high country to the lowlands gives the peninsula some of the highest-quality river water in the contiguous United States.
Pay attention to the bridges, because you're going to cross a lot of water today. The rivers pouring off this range carry some of the cleanest, coldest flow left anywhere in the country, and that's no accident. Their headwaters lie deep in protected wilderness, with no farms, no towns, no mills upstream to foul them, just snow, rock, and forest. Water that falls as snow up high arrives at these crossings about as pure as water gets. Most rivers pick up the whole story of human use on their way to the sea. These ones, for the most part, never had to.
Photo: Niagara66 · CC BY-SA 4.0
