2019 Project Archive

The 33rd Street Outfall project installed a storm sewer system to service the neighborhoods of Five Points, Whittier, and City Park West. This improves drainage during a five-year storm event and addressed areas where significant flooding could occur. The new storm system carries storm runoff and snowmelt safely to the South Platte River, reducing the risk of damage to residential and commercial properties. It also allows additional improvements to connecting systems upstream in areas to the east, which are also at increased risk of flooding.

Overall project construction was completed in December 2019.

The Globeville Stormwater Systems Study was a culmination of an extensive effort by the City and County of Denver, in partnership with the project team, the community, and stakeholders to better understand the causes of flooding in the area; explore solutions for river and local stormwater flooding; and to identify the preferred neighborhood solutions that alleviate flooding and provide multiple community benefits.

Project Status: Study Complete

• Globeville Stormwater Systems Study - Final Report(PDF, 82MB)
• Globeville Stormwater Systems Study - Appendices(PDF, 25MB)

---

Recommendations

Globeville Drainage Basin and Study Area - Full Size Map(JPG, 717KB)

A: 51st & Zuni Park Space: Implement water quality and moderate detention opportunities.

B: Detention and Park Space: Identify and implement detention and potential park opportunity located along the stormwater runoff path before it gets to Globeville. Potential areas could include areas marked B1, B2 and B3. 

C: Project L Pipe: Implement Truncated Project “L” pipe improvement along Jason Street alignment to the South Platte River.

D: 48th Avenue Green Corridor: Further study and implement new stormwater pipe along 48th Avenue with a new outfall at the South Platte River; a stormwater overflow management area at Argo Park and green infrastructure and mobility improvements along 48th Avenue to Washington Street.

E: Flood Protection from the South Platte River: Design and implement improvements to the height of the existing levee and extension of levee from 38th Avenue to approximately 35th Avenue along Ringsby Court. Levee Improvements and extension coupled with a vision for neighborhood amenities along the river.

In addition to the project recommendations, this study emphasized strategies to increase community education and awareness around local flood concerns, and ways for individuals and property owners to protect against flood risk.

---

Project Schedule

The Sanderson Gulch stormwater project improved the drainage system between Lipan Street and the South Platte River. Construction of the new, higher-capacity drainage system consists of underground, large-capacity stormwater box culverts (large pipes) to manage high-water flows during large storm events. The culvert system is combined with a naturalized, open-channel on the surface (between the railroad tracks and Platte River Drive) designed to convey and filter base flows and runoff from smaller storms and improve drainageway habitat.

Construction began in February 2018 and was completed in December 2019.

The City and County of Denver and the Urban Drainage and Flood Control District (UDFCD) conducted an Outfall System Plan Study of stormwater management in the Montclair watershed. The Montclair drainage basin is over 9 square miles and is divided into the lower portion downstream of Ferril Lake in City Park, and the upper portion upstream of City Park. The current stormwater drainage system needs to be improved in some key areas. The Montclair Basin has been identified as a priority basin for storm drainage improvements and water quality improvement.

The concept design concluded in Spring 2019.

Read more about Upper Montclair Basin: Stormwater Systems Study