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Resilient St. Vrain: Restore & Revitalize


Click the funding graphic above to open a larger PDF file that can be downloaded to your computer or enlarged for easier viewing. 

Construction on this very large project will take place in phases beginning on the downstream end. The work will take many years, including time for vegetation to take hold and regrow. All construction dates and costs are estimated and subject to change as the project progresses.

Project Costs

The cost for work on Resilient St. Vrain is estimated between $120 million and $140 million. Note that this figure is not the City's portion of the cost, as it includes federal, state and other funding sources.

All amounts in the chart below are estimated. Costs are subject to change until construction is completed.

project area
external funding
unfunded amount
total cost

Sandstone Ranch

$7.97M FEMA

$1.37M State

$375K GOCO Grant





Left Hand Creek to Main Street

$6.9M FEMA


$1.2M State


$6.8 M






Main Street to ~1,200 feet upstream of South Pratt Parkway Bridge



$5.625M FEMA

$938K State









BNSF RR Bridge area (~1,200 feet upstream of South Pratt Parkway Bridge to ~400 feet upstream of BNSF RR Bridge)












~400 feet upstream of BNSF RR Bridge to Sunset Street

(includes Boston Avenue Bridge)



$1.125M FEMA

$187K State









Sunset Street to Airport Road



Currently seeking funding


Will vary based on funding sources






South Pratt Parkway Bridge











BNSF RR Bridge



$1M Federal











$33.22M Federal;

$ 3.69M State;

$ 375K Other







Project Cost


Project Funding

Partial project funding is coming from a variety of sources, including:

  • $20 million in voter-approved Storm Drainage Bonds
  • Federal Emergency Management Agency (FEMA)
  • Federal Highway Administration (FHWA)
  • Community Development Block Grant-Disaster Recovery (CDBG-DR)
  • Great Outdoors Colorado (GOCO)
  • State and County funds
  • Other existing City funds

The City of Longmont is actively seeking grants and other financial partners to help fully fund the project.

U.S. Army Corps of Engineers (USACE)

Longmont has entered an agreement with the U.S. Army Corps of Engineers (USACE) for the USACE to conduct 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 Resilient St. Vrain.

The purpose of this analysis is to locate an area within the study section that could possibly qualify for a $10 million project as part of the Corps of Engineers' 205 program. Section 205 of the Flood Control Act of 1948 pertains to Small Flood Risk Management Projects. It allows the USACE to construct or improve site-specific flood risk management projects. If a qualifying project area is determined, the Corps of Engineers would oversee the planning, design and construction of the project while coordinating closely with Longmont.

Representatives from the Corps of Engineers 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 being accepted on the feasibility study through Friday, March 17. The public comment period is now closed.

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