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Engineering > Low Impact Development

Low Impact Development (LID) is an approach to land development (or re-development) that works with nature to manage stormwater as close to its source as possible. LID employs principles such as preserving and recreating natural landscape features while minimizing effective impervious surfaces to create functional and appealing site drainage that treats stormwater as a resource rather than a waste product.

There are many practices that have been used to adhere to these principles such as bioretention facilities, rain gardens, vegetated rooftops, rain barrels, and permeable pavements. By implementing LID principles and practices, water can be managed in a way that reduces the impact of built areas and promotes the natural movement of water within an ecosystem or watershed. Applied on a broad scale, LID can maintain or restore a watershed’s hydrologic and ecological functions.

The City of Poulsbo supports and encourages incorporation of Low Impact Development techniques for projects in the City. Low Impact Development is an emerging, rapidly developing, and evolving field. The City of Poulsbo construction standards currently incorporate some accommodation for LID techniques but they cannot be expected to be immediately synchronized with the most current industry changes or Department of Ecology Best Management Practices (BMPs) and methodology. If you are interested in LID techniques for your project, we encourage you to talk to our staff about appropriate techniques which are currently acceptable to the City.