U.S. Army Corps of Engineers Feasibility Study

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In early 2017, the U.S. Army Corps of Engineers (USACE) began conducting a feasibility study of the section of the St. Vrain Creek running from the BNSF railroad bridge to Lykins Gulch. This feasibility study builds upon the existing work done through the Resilient St. Vrain project.

The purpose of this analysis was to locate an area within the study section that could possibly qualify for a $15 million project as part of the USACE's 205 program. (Of that $15 million price tag, $10 million of the cost would be paid for by USACE, with $5 million contributed by Longmont.)

Section 205 of the Flood Control Act of 1948 allows the USACE to construct or improve site-specific flood risk management projects. If a qualifying project area is determined, USACE would oversee the planning, design and construction of the project while coordinating closely with Longmont.

USACE representatives introduced the feasibility study and its timeline to the public during an open house on February 16, 2017. View the USACE open house presentation (3 MB PDF).

Public comments were accepted on Phase 1 of the feasibility study through March 17, 2017. The public comment period is now closed.

Progress Updates

February 2018

The USACE is evaluating options (known as alternatives) for work in the area upstream of the BNSF railroad bridge to just upstream of the Sunset Street Bridge. A report on their findings is anticipated to be ready for public review and feedback in late summer 2018. A public meeting will be scheduled at that time. (8/2018 UPDATE: The anticipated summer public meeting has been postponed because the USACE continues to evaluate feasible design alternatives.)

August 2018

Representatives from the USACE provided an update to City Council on August 21 as part of the overall Resilient St. Vrain Project update. Evaluation of feasible design alternatives continues and USACE currently hopes to have a draft report of their findings for public review in spring 2019. A public meeting is planned once that draft report is available for review and the project moves into the Environmental Assessment phase.

View a video of the USACE's portion of the presentation (start at 1:50:00)

View slides from the USACE portion of the presentation (PDF)

May 2019

USACE is working toward having a draft report and Environmental Assessment for public review in late summer or fall of 2019. An open house will be scheduled and the public will be notified when this information is available for review.


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