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Hoquiam - North Shore Levee - West Project

Summary of the project

Last Updated: May 3, 2022

 
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 Project Overview

The Aberdeen-Hoquiam Flood Protection Project is comprised of two critical levees, the North Shore Levee and the North Shore Levee – West Segment, which are needed to protect the Cities of  Aberdeen & Hoquiam.

Coordinated Coastal Resiliency Planning
The Cities of Aberdeen and Hoquiam are working together on coordinated approach to reduce flooding, promote community development, and support salmon recovery efforts. The Cities are following a two-pronged approach to implement the Coastal Resiliency Master Plan and design / construct a protective levee system. The communities are impacted by a complex interaction of different types of flooding:

  • Coastal flooding—driven by the combination of high tides, low pressure, and strong winds. This is the highest flood source and the primary factor in determining the FEMA flood zones.
  • Riverine flooding—interactions of elevated flows in the Chehalis, Wishkah, and Hoquiam Rivers
  • Small drainage flooding—occurs when urbanized, straightened streams overtop their banks during high rainfall events.
  • Localized flooding—excessive rain events overwhelm the stormwater drainage system.

These local efforts align with the regional work of the Chehalis River Basin Flood Authority resulting in both a Master Plan and preliminary design and approval of a levee system.

North Shore Levee -  West Segment

The North Shore Levee—West Segment, estimated to cost $40 million to construct, will build a 4.7 mile levee (earthen, concrete and sheet pile) bordering the west side of Hoquiam. This levee will protect local residents and build resiliency in the face of future flood events, as well as retain existing businesses, jobs and residents which have been on the decline in this community. Questions on the North Shore Levee - West Segment can be submitted to Brain Shay, City Administrator, City of Hoquiam BShay@cityofhoquiam.com

 Activities- North Shore Levee - West Segment

  • May 2022 - Date Set for FEMA Scoping Open House - June 22, 2022 4 pm - 6 pm at Hoquiam City Hall - See Events page for more details of the Open House.
  • June 2021 - $4 Million Grant from the Office of Chelalis Basin Announced

The $4 million will be used to complete final design and Right of Way Acquistion to achieve shovel ready construction status in 2023. Final Design is underway and may result in some changes to the current alignment.

  • May 2021 - CLOMR Issued by FEMA for North Shore Levee - West Segment

The Federal Emergency Management Agency (FEMA) has issued a Conditional Letter of Map Revision (CLOMR) for the proposed North Shore Levee - West Segment. FEMA's issuance of a CLOMR is confirmation that, once the levee is built and certified, FEMA will redraw local Flood Insurance Rate Maps (FIRMs) to reflect levee protection. Within the limits of levee protection, areas that are currently mapped Special Flood Hazard Area (SFHA) due to coastal flooding will be removed from the 100-year coastal floodplain and remapped as Zone X. This is a major milestone for the North Shore Levee project as it ensures that the project, once constructed, will result in the intended mapping changes.

The City of Hoquiam is working to design and build the North Shore Levee - West Segment to provide flood protection for low-lying parts of Hoquiam, west of the Hoquiam River, north of the Chehalis River and Grays Harbor Estuary. This sement is a continuation of the North Shore Levee project directly east of the Hoquiam River in East Hoquiam and West Aberdeen. That project received a CLOMA in 2017.

The purpose of the levee is to protect the downtown business district, critical infrastructure, and residences in the City of Hoquiam from damaging floods and to reduce the finanical burden of flood insurance and floodplain development regulations. The protected areas will be removed from the Special Flood Hazard Area Zone AE and placed in a Zone X. The City of Hoquiam has suffered from long-term economic depression and high unemployement. The removal of mandatory flood insurance for a majority of properties located within the floodplain will provide a desperately needed boost to the local economy.

The next step in this process is to finalize the design of the Levee and go through the ROW acquistion and permitting processes. Funding to continue design and permitting has been allocated by the Chehalis River Basin Flood Authority for the 2021-2023 biennium.  Construction will be bid ready by the end of 2023.

 

Pictures
Graphic of both of the West side and main North Shore Levee Projects
Alignment shown on 1 page Project Summary March 2021
Fall 2021 Levee Alignment
Updated Levee Alignment November 2021
Flooded road with emergency vehicles
Dec 2015
Clean up starts after Dec 2015 Flood
Clean up starts in 2015
Normal water level of river under the Riverside Bridge
This is a look at the Riverside Bridge during normal river / tide conditions
January 2022 Flooding during King Tides
During the first week of January 2022, the area experienced flooding.
Street Flooding during January 2022
Street Flooding continues to occur during King Tide and high river levels during snow melt.
  
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