Plaster Reservoir 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.