Everyone knows it rains a lot in Seattle and with the Puget Sound on our doorstep, stormwater runoff can have a huge impact on the aquatic ecosystem. In the Puget Sound there are octopus, sharks, harbor seals, sea anemones, sea stars, crabs, clams, salmon and something called sea cauliflower. This multitude of wildlife is important culturally, economically as well as environmentally. Stormwater runoff is the rainwater that falls and runs over impervious surfaces to the nearest waterways. In places without impervious surfaces, the water is intercepted by trees, plants and the leaf litter on the ground and moves extremely...