12th Street Storm Drain Outfall
The City of Greeley is building a new underground storm drain system to prevent flooding in the downtown area. Phase 1 of the project is underway, close to 10th Street and U.S. 85 near the Poudre River. This phase involves infrastructure, public art, river restoration and an extension of the Poudre Trail.
Phases 2 through 4 will continue along 12th Street in downtown Greeley.
This project is necessary to reduce flooding in the area. In the past, floods have caused problems with traffic and damaged homes and businesses.
Project Background
Investing in modern and updated drainage systems is crucial for addressing the current issues and meeting the future needs of our city. It helps manage water effectively by preventing floods, protecting buildings and ensuring public health. Moreover, it safeguards the environment by preventing pollution and maintaining water quality. Updated drainage systems also contribute to durable infrastructure, support urban planning, aid in disaster mitigation, and enhance the overall look of cities and towns.
By addressing these aspects, modern drainage systems cater to immediate and long-term needs, providing sustainable water management and a safer, healthier and more sustainable future.
Stay tuned for more updates as we work towards a more resilient Greeley.
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Phase 1 Construction: December 2022 - June 2024
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The first phase of this project is located in the vicinity of 10th and 12th Streets, 2nd Avenue and US 85. Image below show the proposed storm drain system as it discharges into a proposed water quality pond and ultimately into the Poudre River.
Phase 1 OverviewMay 2023The map describes the impacts on parking from Phase 1 construction from the end of May 2023 to the end of June 2023.
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Phases 2-4 Design: January 2023 to December 2025
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Design for Phases 2 through 4 is currently underway. Phases 2 through 4 will extend the 12th Street storm drain system along 12th Street from 2nd Avenue to 8th Avenue. Storm drain systems are built beginning with the “downstream” end, the outfall at the river, and moving “upstream,” increasing the system’s capacity to capture stormwater in phases. The storm drainage system will reduce flooding in the area while providing a discharge location for future storm drains further “upstream.”
The project will also reconfigure the existing roadway section along 12th Street from 2nd Avenue to 8th Avenue. Additionally, the improvements will provide stormwater quality before the stormwater discharges into the Poudre River.
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Water Quality
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Phase 1 contains a water-quality pond and swale, along with an underground water-quality vault. These project components will treat the stormwater prior to discharging it into the Poudre River. Phases 2 through 4 will continue to look at additional methods to treat the stormwater before it reaches the river.
Keeping our natural waterways clean is a growing challenge in the 21st century. Stormwater runoff has a significant impact on water quality in our rivers and streams. When rain and snowfall on impermeable surfaces, the runoff can carry road salt, oil, grease, chemicals and debris from these surfaces into our waterways.
Stormwater quality features can capture the storm runoff before it reaches a natural waterway. These water quality features allow the stormwater to better infiltrate into the ground and use vegetation to provide more resiliency after a large storm event.
Treating stormwater prior to discharging into the Poudre River will keep our river healthy.
