Heron Pond, Heller Open Space & Carpio Sanguinette Park

Graphic map of construction area in Heron Pond beginning July 2022

Denver’s Department of Transportation and Infrastructure and Department of Parks and Recreation are starting work in Heron Pond, Heller Open Space, and Carpio-Sanguinette Park to build stormwater quality upgrades and begin park improvements. Construction includes:

  • Grading the area for stormwater detention
  • Stormwater outlet structures to slowly release stormwater to the river
  • Two forebays (sediment traps) and a trash vault to improve stormwater quality
  • Sanitary sewer and waterline improvements
  • Park trails and a nature overlook
  • Improved ecological connections and habitat restoration
  • Paving of Emerson Street and part of E. 51st and 52nd Avenues
  • Two parking lots 

Construction Timeline

  • June 2022: Mobilize for construction
  • July 2022: Construction begins
  • End of 2023: Construction complete

Download the construction phasing map(PDF, 261KB)

View the construction area map(JPG, 198KB)

Master Plan Information

Master Plan Documents

Project Background

The Heron Pond Master Plan shapes ideas for how the property can:

  • Improve wildlife habitat, community access and safety
  • Enhance connections to the South Platte River corridor and surrounding neighborhoods
  • Unify Heron Pond Natural Area, Heller Open Space, Northside Park, and adjacent city properties 

Portions of the master plan area are located within the Asarco Globe Cleanup Site. The properties have been remediated to remove or contain the contamination. Denver’s Department of Environmental Health participated in the master planning process to ensure recommendations built on the health and safely of the overall site conditions. Thoughtful development of the master plan allowed for a variety of recreational opportunities and natural experiences, while ensuring the environmental remediation's integrity. 

Initial project goals and desired outcomes:

  • Provide residents with connections to the site’s natural areas and recreational amenities
  • Create opportunities for urban youth to participate in environmental education
  • Improve river ecosystem health through habitat restoration and innovative water systems
  • Enhance visibility and connections between Heron Pond and embankments along the South Platte River
  • Provide opportunities for residents to share the history of Heron Pond, Heller Open Space, Northside Park and the South Platte River
  • Engage the communities to unify the various areas within the site into one open space vision that addresses the desires of the community
  • Leverage/complement adjacent redevelopment
  • Position the plan for resourceful and strategically phased implementation and identify early improvements

Master Plan Boundaries

Master Plan boundaries for Heron Pond, Heller Open Space and Carpio-Sanguinette Park

Project Renderings


Aerial rendering of project area

Aerial rendering of Heron Pond, Heller Open Space and Carpio-Sanguinette Park

Pavilion rendering

Rendering of pavilion at Heron Pond

Pavilion rendering

Rendering of pavilion at Heron Pond

Playground rendering

Rendering of playground at Heron Pond

Questions? Email the project team: HeronPondPlan@denvergov.org


1401 E. 54th Ave, Denver, CO 80216, Denver 80216  View Map

Google Map