Plaster Reservoir Open Space Management Plan

The City and County of Broomfield staff are working to develop a management plan for Plaster Reservoir. The plan will include on-going maintenance recommendations, near-term capital improvement project recommendations (within next 10 years), and identification of any long term capital improvement projects.

Plaster Reservoir, a key feature of Broomfield’s open space holdings and is adjacent to the Broadlands Golf Course, is located within the Quail Creek Drainage Basin, northeast of the intersection of Lowell Boulevard and West 136th Avenue. The primary objectives for Plaster Reservoir are to provide stormwater detention, wildlife habitat, public trail corridors and aesthetic value for Broomfield residents, the adjacent neighborhood and golf course patrons.

Previous Work

In 2012 ICON Engineering, Inc. completed a reservoir dredging assessment for Plaster Reservoir to determine if dredging was required or recommended for water quality and/or flood control, and to establish a prioritized capital improvement program for reservoir dredging. This assessment determined that from a flood storage perspective, dredging was not necessary at the time. The assessment also noted that the large amount of cattails to the west of the open water was creating a near stagnant flow along Quail Creek directly upstream of the reservoir. This issue, in addition to other factors (such as fertilizer runoff from the adjacent golf course) have likely contributed to periodic odor issues.

The Current Project

The City and County of Broomfield, through a competitive RFP process, has hired SMITH Environmental and Engineering to develop a reservoir management plan for Plaster Reservoir. This management plan will provide guidance to the City on how to approach the maintenance of Plaster Reservoir in order to maintain flood attenuation capacity, enhance and support ecosystem health, preserve public trail access, maintain wildlife education experiences and manage and reduce odor issues both over the short and long term.

Beginning in September 2020, SMITH will be working with City staff over the next six months, to develop a management plan which will include on-going maintenance recommendations, near-term capital improvement project recommendations (within next 10 years), and identification of any long term capital improvement projects. The management plan will objectively prioritize management activities and make recommendations on how to implement said activities based on cost, feasibility and expected effectiveness.

The final management plan report will include clear and concise, yet detailed, rationale for all findings and recommendations, including key assumptions and any data gaps. It will include easy to understand decision making tools (e.g., flow chart, decision matrix, etc.) based on a variety of factors (i.e., anticipated level of benefit, technical feasibility, cost effectiveness, etc.).

The view from the south bank of Plaster Reservoir.

The City and County of Broomfield staff are working to develop a management plan for Plaster Reservoir. The plan will include on-going maintenance recommendations, near-term capital improvement project recommendations (within next 10 years), and identification of any long term capital improvement projects.

Plaster Reservoir, a key feature of Broomfield’s open space holdings and is adjacent to the Broadlands Golf Course, is located within the Quail Creek Drainage Basin, northeast of the intersection of Lowell Boulevard and West 136th Avenue. The primary objectives for Plaster Reservoir are to provide stormwater detention, wildlife habitat, public trail corridors and aesthetic value for Broomfield residents, the adjacent neighborhood and golf course patrons.

Previous Work

In 2012 ICON Engineering, Inc. completed a reservoir dredging assessment for Plaster Reservoir to determine if dredging was required or recommended for water quality and/or flood control, and to establish a prioritized capital improvement program for reservoir dredging. This assessment determined that from a flood storage perspective, dredging was not necessary at the time. The assessment also noted that the large amount of cattails to the west of the open water was creating a near stagnant flow along Quail Creek directly upstream of the reservoir. This issue, in addition to other factors (such as fertilizer runoff from the adjacent golf course) have likely contributed to periodic odor issues.

The Current Project

The City and County of Broomfield, through a competitive RFP process, has hired SMITH Environmental and Engineering to develop a reservoir management plan for Plaster Reservoir. This management plan will provide guidance to the City on how to approach the maintenance of Plaster Reservoir in order to maintain flood attenuation capacity, enhance and support ecosystem health, preserve public trail access, maintain wildlife education experiences and manage and reduce odor issues both over the short and long term.

Beginning in September 2020, SMITH will be working with City staff over the next six months, to develop a management plan which will include on-going maintenance recommendations, near-term capital improvement project recommendations (within next 10 years), and identification of any long term capital improvement projects. The management plan will objectively prioritize management activities and make recommendations on how to implement said activities based on cost, feasibility and expected effectiveness.

The final management plan report will include clear and concise, yet detailed, rationale for all findings and recommendations, including key assumptions and any data gaps. It will include easy to understand decision making tools (e.g., flow chart, decision matrix, etc.) based on a variety of factors (i.e., anticipated level of benefit, technical feasibility, cost effectiveness, etc.).

The view from the south bank of Plaster Reservoir.

  • Update: October 8 Open House

    09 Oct 2020
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    On October 8, an outdoor open house was held at Plaster Reservoir Open Space on a stunning fall evening from 4:30 to 6:30 p.m. Over 50 residents joined staff for an informal and socially distanced event to learn more about the Plaster Reservoir management plan. Staff provided information tents at the southeast corner of the reservoir. Residents were asked to complete a self-guided tour of the reservoir and then fill out a short survey. Click the self-guided tour, and please take the survey. Please be sure to submit your survey by October 31, 2020. Residents' comments about the site and technical research will be used to develop a maintenance plan that will maintain flood capacity, enhance ecosystem health, preserve trail access, maintain wildlife education experiences, and identify capital improvement projects to further these project goals. The Open Space and Trails Advisory Committee (OSTAC) will be updated on the project at its October 22 meeting. The OSTAC meeting agenda will be posted by October 17 here. This is a virtual meeting and the agenda will have the link to join the meeting.

  • Self Guided Walking Tour & Survey

    07 Oct 2020

    Can't make the Open House? Take a Self Guided Walking Tour HERE.

    The City and County of Broomfield and Smith Environmental & Engineering are working together to develop a management plan for Plaster Reservoir Open Space, and we want YOU to be involved! Click HERE to take our survey before November 1st.


  • Open House October 8, 4:30-6:30pm

    23 Sep 2020
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    JOIN US FOR AN OPEN HOUSE AT PLASTER RESERVOIR!

    Please join us for an informal and socially distanced open house to learn more about the Plaster Reservoir management plan being developed by the City and County of Broomfield with the expertise of SMITH Environmental & Engineering.

    DATE: October 8, 2020

    TIME: 4:30 - 6:30 PM

    LOCATION: South Side of Plaster Reservoir (look for the tents)

    PARKING: If you are driving to this event, you may park in the west parking lot at Legacy High School.

    For the health and safety of the community, Broomfield staff respectfully requests that members of the community interested in attending the open house please wear a mask to help prevent the spread of Covid-19. Click HERE for Symptoms Chart & Quarantine Isolation Guidance.