2017 Flood protection
About this measure: This measure describes flood hazard risks reductions completed by the King County flood protection program in 2017.
2017 target: fully implement the 2017 flood protection program
2017 program results:
Flood damage repairs and levee rehabilitation projects — Flood damage repairs and levee rehabilitation projects were implemented at:
- In 2017 Rivers increased the number of baselined construction projects from six to nine. These projects are the Countyline Levee Setback, Sinnema Quaale Repair, Black River Pump Station Sediment Removal, Tolt Pipeline Revetment Repair, SE David Powell Rd, SE Fish Hatchery Rd, SE 19th Way Revetment, Sammamish Bank Repairs, and the Teufel Mitigation.
- Five of these projects were either on schedule or ahead of schedule. These are the Black River Pump Station Sediment Removal, SE David Powell Rd, SE Fish Hatchery Rd, SE 19th Way Revetment, and the Teufel Mitigation.
- The Countyline project finished behind schedule due to protracted land acquisitions resulting in condemnations; the project in now in closeout.
- Construction for the Tolt Pipeline Revetment Repair has been delayed a year due to difficulties in procuring real estate and with securing federal permits. Construction is currently scheduled for Q3 2018.
- SE 19th Way Revetment
- Sinnema Quaale Upper Revetment was completed behind schedule due to construction complications. The project is now closed.
- Construction for the Sammamish Bank Repairs is also a year behind schedule due to unanticipated difficulties with permitting, most notably with the Section 408 permit with the US Army Corps of Engineers. Construction is currently scheduled to begin in the summer of 2018.
Acquisition and elevation of at-risk structures
- Eleven homes on 65 acres of floodplain were acquired from willing sellers at a cost of $7.5 million, providing permanent flood risk reduction;
- Nine home elevations were completed, and 12 are currently underway.
Agricultural flood mitigation
- In the lower Snoqualmie valley, technical support is being provided for three farm pads that will be constructed in 2018.
2018 target: fully implement the 2018 flood protection program
Influencing Factors: Work program expectations are established by the King County Flood Control District; flood risk reduction actions, alternatives, and schedules may be revised based on their direction. Additional staff resources were authorized by the District with the assumption that the rate of capital project service delivery and expenditures would increase.
Strategy Going Forward: Manage capital project scopes and schedules to achieve forecasted quarterly milestones, and achieve the 6-year capital expenditure targets associated with the request for additional staff resources in 2017.
- For the Green River, the interim System-Wide Improvement Framework (SWIF) was completed and submitted to the U.S. Army Corps of Engineers in February 2016; the District has authorized a broader multi-objective river corridor planning effort for the Green River beginning in 2016.
- For the River and Floodplain Management Section, a product catalog has been developed and specific metrics and milestones are now in development. It is anticipated that these metrics will be the basis for future more robust KingStat reporting.
Background: During 2007 King County took several significant steps to identify and respond to the flood hazards facing our communities. First, in January 2007, the King County Council adopted the 2006 Flood Hazard Management Plan, which included an evaluation of flood hazard vulnerabilities and an action plan of capital projects and programmatic activities intended to reduce flood risks throughout the County.
Following adoption of the Plan, the Council then authorized the formation of the King County Flood Control District (KCFCD) under RCW 86.15, including the voluntary establishment of an Advisory Committee of 15 elected officials to provide the KCFCD Board of Supervisors with expert policy advice on the District's work program priorities and budget. The Advisory Committee is supported by King County staff with input and recommendations from Basin Technical Committees comprised of public works and planning officials from cities throughout the County.
2005 - 2009
Download PDF versions: Cedar River, Green River, Issaquah Creek, Lower Snoqualmie River, Raging River, Tolt River, Sammamish River, Skykomish River, Upper Snoqualmie River and White River. .
Data Reference for Flood Safety in King County
FEMA: National Flood Insurance Program's (NFIP) Community Rating System (CRS)