Potable Water Storage Tank and Park Site

City of Broomfield, 
Colorado

Potable Water Storage Tank and Park Site

Service Type: 
Project Highlights: 
  • 3-million-gallon, 114-footdiameter, 40-foot-tall steel water storage reservoir.
  • Tank mixing system, cathodic protection, and a passive leak detection system.
  • Landscaping design for adjacent park site.
  • Input from community groups
Broomfield’s water storage reservoir
The design of Broomfield’s water storage reservoir included special considerations to match an existing reservoir at the site.

Carollo provided design services for the addition of a second 3-million-gallon water storage tank for the City of Broomfield. The new aboveground welded steel water storage tank has features to match the existing 3-million-gallon steel tank already on the site. The tank is connected to Broomfield’s water distribution system via a 30-inch main. Tank levels vary based on supply and demand from the pressure zone. The tank is supplied with water from either Broomfield’s water treatment plant via the Carbon Road Pumping Station or from Denver Water. The design allows water levels in the tank to be monitored via an ultrasonic level transducer that transmits data using radio telemetry, then communicates information to the water treatment plant. The tank design also features cathodic protection, a passive leak detection system, and a tank mixing system installed in the new and existing tank to minimize stagnation.

The tank’s size and proximity to the adjacent structure necessitated an in-depth geotechncial investigation. The design team also reviewed existing maps of the area to determine if an abandoned coal mine, drifts, or shafts presented potential impacts to the project site. The project includes the design of a passive-use park. This park provides the community with an alternative walking pass through the site and features a combination of irrigated and xeriscape landscaping.