Stormwater and Surface Water System Plan

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11 Billion gallons of rain fall on Redmond each year.

Redmond’s stormwater system collects rainwater runoff and sends it to stormwater ponds and underground vaults, which hold and slowly release water into our lake, river, and streams.

The City is developing the Stormwater and Surface Water System Plan (SSWSP) to help prevent flooding and pollution, restore natural habitat, and keep our lake, river, and streams healthy for everyone to enjoy.

Last year the City hosted a table at Derby Days, conducted community leader and staff interviews (see community leader interviews summary under the documents section), and fielded a community-wide survey (see the survey summary under the documents section).

We heard…

  • Stormwater Utility is providing quality flood prevention and response services,
  • Support for green stormwater infrastructure, like rain gardens and native plants,
  • Strong support for education on sustainability and ways to reduce water pollution,
  • A desire for more partnerships with organizations working to protect water, and represent the needs of property owners and developers,
  • Priorities include drainage, flooding, and water quality.

Based on what we learned, we are prioritizing projects using these criteria:

  • Technical: What problem does the project address? For example, water quality, habitat, or drainage.
  • Urgency: How quickly do we need this project? For example, it addresses important needs such as failing pipes or health and safety concerns.
  • Opportunity: Can a project potentially have a greater impact? For example, projects can have multiple benefits if paired with another project, works with partners, or have funding opportunities.
  • Community Values and Vision: Does a project have community and City support? For example, it benefits an underserved community or is in a priority city location, such as priority watersheds.

Thank you for your help in shaping Redmond’s stormwater and surface water future!




11 Billion gallons of rain fall on Redmond each year.

Redmond’s stormwater system collects rainwater runoff and sends it to stormwater ponds and underground vaults, which hold and slowly release water into our lake, river, and streams.

The City is developing the Stormwater and Surface Water System Plan (SSWSP) to help prevent flooding and pollution, restore natural habitat, and keep our lake, river, and streams healthy for everyone to enjoy.

Last year the City hosted a table at Derby Days, conducted community leader and staff interviews (see community leader interviews summary under the documents section), and fielded a community-wide survey (see the survey summary under the documents section).

We heard…

  • Stormwater Utility is providing quality flood prevention and response services,
  • Support for green stormwater infrastructure, like rain gardens and native plants,
  • Strong support for education on sustainability and ways to reduce water pollution,
  • A desire for more partnerships with organizations working to protect water, and represent the needs of property owners and developers,
  • Priorities include drainage, flooding, and water quality.

Based on what we learned, we are prioritizing projects using these criteria:

  • Technical: What problem does the project address? For example, water quality, habitat, or drainage.
  • Urgency: How quickly do we need this project? For example, it addresses important needs such as failing pipes or health and safety concerns.
  • Opportunity: Can a project potentially have a greater impact? For example, projects can have multiple benefits if paired with another project, works with partners, or have funding opportunities.
  • Community Values and Vision: Does a project have community and City support? For example, it benefits an underserved community or is in a priority city location, such as priority watersheds.

Thank you for your help in shaping Redmond’s stormwater and surface water future!




  • CLOSED: This consultation has concluded.

    Project Overview


    The City is developing the Stormwater and Surface Water Systems Plan (SSWSP) to guide actions to reduce and prevent flooding, protect and restore natural habitat, keep pollutants away from fish and wildlife, protect our drinking water aquifer, and keep our lake, river, and streams healthy for everyone to enjoy.


    This plan will serve the entire Redmond community. Your feedback on how we’re doing and what is important to you will help us improve our stormwater services and programs and shape the SSWSP’s priorities. Responses are anonymous.

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Page last updated: 17 Apr 2025, 02:33 PM