Overview: Aerial Fish Stocking Oregon uses helicopters every other year for aerial fish stocking in high mountain lakes. Hiking from Portland to the Pacific Coast A Portland man finds a way to hike from Portland to the coast without building new trails. Stormwater Stormwater is a toxic cocktail of sediment, grease, road grime, tire wear and any litter small enough to slip into storm drains. And that’s just what can be seen. There’s much more.