Title
A RESOLUTION approving a framework of goals, objectives and conceptual approaches for preparation of comprehensive floodplain management plan for the South Fork Snoqualmie River.
Body
WHEREAS, the scope of the proposed South Fork Snoqualmie River Corridor Plan ("Corridor Plan") is focused on the lower six miles of the South Fork, where flooding problems are most significant and where King County maintains a system of flood containment levees; and
WHEREAS, the Corridor Plan will recommend a suite of actions within the river corridor, comprised of levees, floodplain, channel migration and riparian areas to achieve goals and objectives of the Corridor Plan; and
WHEREAS, flooding in recent years, including floods in 2006, 2008 and 2009, has overtopped portions of the aging levee system with impacts to homes, roadways and communities; and
WHEREAS, neighborhoods are at risk from bank erosion, flooding and channel migration; and
WHEREAS, five aging bridges in the area have inadequate capacity to convey floodwaters and tributary inflows from Clough, Ribary and Gardiner Creeks; and
WHEREAS, a one hundred year flood event would likely inundate more than one hundred thirty structures and properties, over five miles of roadway, including a portion of Interstate 90, and critical facilities including North Bend's wastewater treatment plant; and
WHEREAS, a five hundred year flood event would create more risk, inundating an estimated five hundred structures, over fifteen miles of roadway and additional critical facilities; and
WHEREAS, the current King County Flood Control Zone District Six-Year CIP includes an early action project to address Interstate 90 flooding; and
WHEREAS, floodplain management goals, objectives and conceptual approaches are desirable for the conduct and development of the Corridor Plan; now, therefore,
BE IT RESOLVED BY THE BOARD OF SUPERVISORS OF THE KING COUNTY FLOOD CONTROL ZONE DISTRICT:
SECTION 1. The board of supervisors adopts the "South Fork Snoqualmie
River Corridor Plan Framework, Floodplain Management Goals, Objectives, and Conceptual Approaches," dated November 24, 2014, which is Attachment A to this resolution.