1. What is LID?

Low Impact Development (LID), or green infrastructure, is a practice that mimics and works with nature by capturing surface water as close to its source as possible and then helping it soak into the ground.

LID is more environmentally friendly in comparison to the traditional stormwater practice which directs surface water into large detention ponds and vaults where it is held and released either through pipes or streams. Instead of this, LID reduces the impact of development by capturing and reusing stormwater to restore the natural flow of water through an area.

One type of LID that we are considering for this project is bioretention. Bioretention (also called "rain gardens") is a process that removes contaminants from stormwater runoff by using plants and other organic materials to remove toxins as water filters through the treatment area.

Benefits of LID

Improved water quality. Pollutants such as oil, bacteria, sediments, and metals in stormwater are reduced before water reaches streams and the Puget Sound.

Reduced number of costly erosion events. The volume of water that enters streams is reduced, decreasing the amount of erosion in them.

Restored aquatic habitat. Less erosion means less damage to fish habitats!

Enhanced neighborhood beauty. While traditional stormwater management typically involves concrete and fencing, LID allows for more green space in our community.

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