Ongoing Projects

City of Edmonds – Outlet Study with Northwest Hydraulics
In 2013 the City of Edmonds contracted Northwest Hydraulic Consultants to construct updated modeling of the Lake Ballinger watershed. The revised models were focused specifically on simulating lake level for the purpose of assessing its response to the lake outlet control structure. This was accomplished by updating subbasin detention in the basin, using improved land use and soils information, and through calibration to recorded stream flows on Hall and McAleer Creeks (collected by the City of Mountlake Terrace). The updated models were used to quantify the impact to flood levels of the McAleer Creek culvert replacement project and to theoretical modifications of the outlet control weir. The models can be used to assess future changes in the watershed and to revise the FEMA floodplain delineation of Lake Ballinger. The results can be found here.

City of Lake Forest Park – McAleer Creek Bypass Retrofit
In 2007-09 the City of Lake Forest Park performed a flood reduction study that determined the intake facility becomes obstructed with debris from the stream reducing its ability to bypass flows by up to 40%. As a result, the plan identifies a retrofit project that would increase the capacity of the facility to bypass high flows. The planning level cost estimate for this project is $250,000. The State of Washington appropriated funding for this project in 2010 to be administered through the Washington State Department of Transportation (WSDOT). The City is working to prepare a request for proposals for design and construction of this project and coordinating with WSDOT.  The Lake Ballinger/McAleer Creek Forum was instrumental in supporting this project for funding.

City of Mountlake Terrace – McAleer Creek Culvert Removal Project
In late 2014, the City of Mountlake Terrace completed a culvert removal project on McAleer Creek between Lake Ballinger and Interstate 5. The project removed three undersized 60-inch culverts installed in the early 1980s at the Nile Shrine Golf Center. New full span bridges replaced the culvert crossings on the creek downstream of the road access driveway off State Route 104. A new full span concrete box culvert bridge was installed at the road access driveway that allows for full stream passage under the structure. Fish friendly gravel was placed under the bridge and streamside plants and vegetation were planted in areas disturbed by the work. These installations met Washington State Department of Fish and Wildlife fish passage standards and eliminated the need for ongoing maintenance at each site while allowing for the full flow of water within the stream banks during storm events.