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Lower Coal Creek Flood Reduction

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To address flooding issues in the Newport Shores neighborhood, the City of Bellevue and the King County Flood Control District have jointly worked with an engineering team and Newport Shores residents to select a project with two components to reduce flood risks. The first component will reduce Lower Coal Creek flooding, and the other component will reduce street flooding.

Lower Coal Creek Flood Reduction Project Map
Map of Project Area
Flooding in Newport Shores   An existing Lower Coal Creek bridge (culvert)

Status Updates

See below for the schedule of activities, information about the current phase, and updates on the two components of the Lower Coal Creek flood reduction project.

Schedule of Activities

The Lower Coal Creek flood reduction effort will follow this schedule:

  • 2015 – 2017: Final design and permit acquisition.
  • 2017 – 2019: Construction of new bridges (culverts) and stormwater outfalls.

Current Phase

The flood reduction project is now in its second phase. As the diagram below shows, the project is currently being designed and permitted.

Lower Coal Creek Right of Entry MapReduce Creek Flooding

To reduce the risk of Lower Coal Creek flooding, new bridges will be constructed at five locations in the neighborhood. These new bridges will better allow the passage of creek water, reduce the chance of debris getting clogged, and eliminate the partial fish passage barrier that currently exists at Cascade Key. The bridges will all be designed in accordance with the Washington Department of Fish and Wildlife’s Water Crossing Design Guidelines.

This autumn, surveyors and the design team conducted site investigations of the five potential locations for these bridges. Thank you to all the residents who returned “Right of Entry” agreements that allowed this work related to the new bridges. Based on the field investigations, geotechnical work, and surveys, the engineering firm is now working on preliminary layouts and designs for these bridges.

Reduce Street Flooding

To minimize the flooding that occurs in the streets during heavy rains, the current storm pipes will be disconnected from Lower Coal Creek and rerouted to new outfalls that will discharge into Lake Washington. Stormwater will be treated to remove fine sediment before discharging to Lake Washington. In January 2016, the project team will evaluate various sites to identify potential stormwater outfall locations for the preliminary design.

To gather data to design the new stormwater outfalls, the city has requested temporary right of entry agreements with the property owners who live adjacent to the potential outfall locations. Thank you to everyone who has already signed a temporary right of entry agreement for the field work related to the stormwater outfalls. For anyone who has not signed the right of entry agreement, please review it and if you decide to sign it, please return a signed copy to Hannah Peshkov (mail the signed letter to 450 110th Avenue NE, Bellevue, WA 98009 or scan and email the signed letter to hpeshkov@bellevuewa.gov). If you have any questions or concerns about these right of entry agreements, please contact Bruce Jensen (bjensen@bellevuewa.gov or 425-452-7240).

If the data shows that a property is feasible, the City of Bellevue would then offer fair market value for an easement based on a property appraisal. If a mutually acceptable agreement can be reached, the City would work with the property owner on the timing of construction and any other concerns, and would restore the property when work was complete.

Public Involvement

The City of Bellevue hosted a booth at the City’s Spring Forward Expo in April 2013 and had meetings with the Newport Yacht Club Association in October 2013 and March 2014. The City of Bellevue hosted a Public Forum on May 12, 2014 at the Newport Yacht Club to hear the public’s thoughts on potential alternatives. Additional public outreach is being planned for future stages of the project. This will include updates to this website, updates in the Newport Yacht Club Association’s newsletter, as well as future community forums and potential field trips.

Other Lower Coal Creek Efforts

NORCOM (North East King County Regional Public Safety Communication Agency) is an emergency service provider for Bellevue and acts at the request of Bellevue Police, Fire or the Utilities Department to activate emergency alerts.The NORCOM system notifies residents about severe weather, epidemics, terrorist activities, flood emergencies for Coal Creek, or other emergencies. Residents who are on the list would receive a pre-recorded phone call, text and/or email during an actual emergency.

You may remember that in October 2014, a request went out from the Newport Yacht Club Association to neighbors with the opportunity to update and/or opt in to the NORCOM Reverse 911 notification system and many of you did. However, NORCOM has recently discontinued the use of the Reverse 911 system to upgrade and provide faster emergency notification. They have now partnered with King County Emergency Management’s public information and notification system. This new system, called RPIN (Regional Public Information and Notification), is a free system that can send emails, text and voice messages to residents, in NORCOM's service area (as well as all of King County), during emergencies.

Unfortunately, NORCOM is unable to migrate the information stored in the old system to the new system. Residents that want to receive notifications about severe weather, epidemics, terrorist activities or other emergencies must subscribe online for the RPIN system.

If you have any questions about this Reverse 911 system, please contact Cory James, Team Supervisor for NORCOM 911, at 425-577-5580 or cjames@norcom.org.

Project History

Below is an overview of the history of the Lower Coal Creek flood reduction effort.

Fall/Winter 2013 Engineering study of existing conditions; initial contact with public.
Winter/Spring 2014 Alternatives analysis, public involvement.
2014 Select preferred alternative(s); finalize pre-design and details of preferred alternative(s);   community meeting to discuss preferred alternatives.
Winter/Spring 2015 Selection of engineering design team.
Summer/Fall 2015 Contracting and field investigations.
Fall 2015 / Winter 2016 Preliminary bridge design.

How can I stay informed?
This webpage offers the most up-to-date information on the project. Additional materials and project information will be posted on the site as the project develops. For more information, please contact:

Bruce Jensen
Utilities Engineering Project Manager

Frequently Asked Questions (Updated November 2015)
Contact Information

P.O. Box 90012
Bellevue, WA 98009
Contact: Kit Paulsen
Phone: 425-452-4861
E-mail: KPaulsen@bellevuewa.gov

Customer Assistance

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