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LID Low Impact Development

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View a map of existing Low Impact Development projects in the City of Tumwater and surrounding areas.

Low Impact Development

Aspects of modern development practices, such as paved surfaces or removal of established plant life, can interfere with how water moves and absorbs into the ground which can increase flooding, stream channel erosion, sediment transportation and deposition, and decrease groundwater recharge. The goal of low impact development is to minimize that interference by limiting impervious surfaces and native vegetation loss as well as building in features that can mimic the site's original hydrology.

In accordance with the requirements of the Western Washington Phase II Stormwater Permit, Tumwater developed a set of amendments to encourage low impact development as the "preferred and commonly-used approach to site development" within the City.

Ordinance O2016-037: Low Impact Development

2013-2018 Western Washington Phase II Municipal Stormwater Permit


For additional information, contact:

Water Resources Program Manager, Dan Smith at (360)754-4140 or

Linderson pic of LID sidewalk planter strip1

 Linderson Way LID Project - located at I-5 pedestrian overpass (2014)