Stormwater regulations changed for the new year

Kitsap County’s Department of Community Development is revising development-related codes, and is introducing a new stormwater management design manual, which came into effect Dec. 31, 2016.

The development regulation changes are prompted by the Washington State Department of Ecology requirement to integrate Low Impact Development (LID) principles and best management practices with local development requirements.

The intent of the revisions is to make LID the preferred and commonly-used approach to site development. The revisions are designed to accomplish three major goals:

  • Minimize impervious surfaces.
  • Minimize native vegetation loss.
  • Minimize stormwater runoff in all types of development situations.

In compliance with the goals of the permit, Kitsap County Board of Commissioners adopted a new stormwater design manual, as well as revisions to applicable codes. Changes to the County Code included these sections:

  • Title 12 — Stormwater and Drainage has been updated
  • Title 16 — Land Division and Development was slightly modified to make LID the preferred method.
  • Title 17 — Zoning was modified in regards to parking and landscaping requirements to facilitate implementation of LID.

The Kitsap County stormwater regulations include the following Design Manuals:

  • Kitsap County Stormwater Design Manual:
  • 2012 Low Impact Development Technical Guidance Manual:
  • 2012 Stormwater Management Manual for Western Washington (updated 2014):

Low-impact development is a stormwater and land-use management strategy that strives to mimic natural hydrologic processes to reduce the amount of stormwater that runs off a site. LID strategies include conservation, use of on-site natural features, site planning and distributed stormwater management practices that are integrated into a project design.

Low impact development treats stormwater as close to its source as possible. For a new house, this may mean installing a rain garden to treat roof runoff and providing native vegetation along a driveway to allow the rain that falls on the driveway to disperse into the vegetation. Site planning prior to construction will assist the developer in creating a project using low impact development techniques.

For more information, visit or contact Shawn Alire,

— Edited by Michelle Beahm

More in News

Stonechild Chiefstick
Chiefstick’s family gets $2 million in lawsuit against Poulsbo

Poulsbo has settled the federal civil rights and state wrongful death lawsuits… Continue reading

Cast members of Olympic College film student R.S. Powell’s thesis film “Ghost in the Graveyard.”
Hoping he has a ghost of a chance in film industry

Olympic College student makes horror flick at NK locations

One of the parking spots on Front Street that will be designated for short-term parking and loading areas for nearby businesses. Courtesy Photos
3 downtown spots to be short-term loading areas

Council also approves new contract with Poulsbo police

Port Orchard city public hearing on fireworks ordinance

Hearing is set for March 22 in City Hall

Rep. Michelle Caldier, R-Port Orchard
Caldier sets virtual town hall meeting

Session is planned for Thursday, March 24

137 new COVID cases confirmed in Kitsap in the past week

Over the last week, Kitsap’s case rate per 100,000 residents has dropped significantly to 32.3

Escape from the horrors in Ukraine

Mother and her sons make a harrowing journey out of war-torn Kyiv to South Kitsap

Legislature 2022: What passed and what didn’t

Lawmakers pass $64.1 billion supplemental state budget

Most Read