Status
As of January 2008

As of early  December 2007, analysis of the current proposed improvements and 60% design are nearing completion for the area downstream of Ronald Bog to N. 167th Street, known as the Thornton Creek Corridor.   The objectives for this project are to identify opportunities for implementing project features that provide a water quality, habitat, and community benefit.  The City intends to work closely with the permitting agencies to address the interests of all stakeholders involved in the project.

The public will be provided opportunity to comment on the plan prior to the 60% completion.  The 60% design document will be submitted for review to the appropriate regulatory permitting agencies (U.S. Army Corps of Engineers and the Washington Department of Fish and Wildlife) once the City completes the State Environmental Policy Act (SEPA) process.

The City of Shoreline has developed a Surface Water Master Plan that has evaluated and recommended solutions for flooding problems and drainage issues throughout the City, including areas around Ronald Bog.  Additional improvements to enhance the drainage protection within the Ronald Bog Project study area will be analyzed as part of the Thornton Creek Corridor Project.

Overview & History
Ronald Bog is a visible part of the Thornton Creek Watershed, which runs through Shoreline and Seattle into Lake Washington at Matthews Beach. Flooding problems in Shoreline's area of the watershed -- which affect 15 to 20 homes -- are caused primarily by inadequate and out-of-date storm water control systems.

While the City developed the Surface Water Master Plan, short-term improvements offering surrounding areas immediate relief from flooding have been completed, including:

• The City cleared debris and roots from the storm drainage pipes in two locations: south of Ronald Bog and the vicinity of 10th Avenue NE at NE 175th Street. Both pipes were checked for damage via videotaping devices.
• The City created a temporary berm of eco-blocks at the outlet of Ronald Bog to provide winter flood protection.
• The City repaired or replaced pipes in two locations: (1) NE 175th Street between 10th and 12th Avenues NE and north on 10th Avenue NE from NE 175th Street to NE 177th Place and; (2) NE Serpentine Place from 5th Avenue NE west to NE 175th Street.
• The City built sidewalk on the south side of NE 175th Street between 10th and 12th Avenues NE where the drainage improvements were.