Surface Water Management
Public Works
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Project DescriptionLorenzan Creek is a salmon bearing stream that flows under Skagit County's road shop, 0.8 miles upstream of its confluence with the Skagit River in Concrete, WA. The creek flows under the shop in an 18” concrete culvert that is 360 feet long. The condition of the culvert may not be sufficient to convey high flows, which can potentially exacerbate flooding in the town of Concrete. Pollution is also a concern because stormwater drainage from about a square mile of paved surfaces discharges directly to the creek through multiple storm drains. Additionally, this culvert is too small to allow adequate fish passage, per a WDFW assessment completed on May 29, 2018 (WDFW Site ID:GR18). This project is being led by Skagit County. Four alternatives will be examined and ranked for cost, water quality benefit, feasibility, stakeholder support, and other metrics determined by the stakeholders. A preferred alternative will be selected and designed. That design will then be used to request funding to complete the project, and eventually for construction. |
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 Aerial image showing the approximate path of Lorenzan Creek through the road shop. |
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Project GoalsThe overall goals for this project include:
Phase 1 work involves analyzing the existing stormwater facility and providing recommendations to improve water quality by reducing the frequency and potential of pollutants entering the stream. |
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 Outlet of the piped portion of Lorenzan Creek at Skagit County Road Shop in Concrete, WA RECORDING: Lorenzan Creek Community Meeting (March 15, 2023) | |
Updates & Monthly Communications2024 2023
2022
2021 Project Partners and StakeholdersStakeholders and key partners in and near the project area will be involved throughout the project duration. The project will explicitly involve stakeholders and partners at key points during the decision-making process, including (but not limited to):
Project Partners:
Stakeholders:
Project Funding Sources
FAQ'sDocumentsWorkshop #2: March 15, 2022 Workshop #1: January 26th, 2022 | Agenda Packet | Meeting Notes
Contacts
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