A webcam view of the new concrete dam structure at the lake on Brockton Drive

Stormwater

Brockton Drive Dam Rehabilitation

Phase 2

We replaced the structure at the lower dam on the lake at Brockton Drive with a tiered, reinforced concrete structure. The project addresses safety concerns with the original dam structure. Water will now safely flow out of the lake downstream. 

Project Details

 
Type:
Lakes, Streams, and Dams
Budget:
$4.2 million
Project Lead:
Stormwater Management
Contractors:
CDM Smith, Inc. (Design), Thalle Construction (Construction)

Contact

 

Gilles Bellot, PE
Project Manager
919-996-4001

Lead Department:
Engineering Services
Service Unit:
Stormwater

Subscribe

 

Planning

This phase is complete.

Phase Contacts

 

Gilles Bellot, PE
Project Manager
919-996-4001

Lead Department:
Engineering Services

Design

This phase is complete.

Phase Contacts

 

Gilles Bellot, PE
Project Manager
919-996-4001

Lead Department:
Engineering Services

Construction

This phase is complete.

Phase Contacts

 

Gilles Bellot, PE
Project Manager
919-996-4001

Lead Department:
Engineering Services

Complete

All major work for this project is finished. Crews paved Brockton Drive and the road is now open to traffic. 

Completed Work

  • Relocated the sewer line in the project area;
  • Installed the re-designed cofferdam. The temporary sheet pile cofferdam held off lake water during construction;
  • Added a bypass pipe for the cofferdam; 
  • Excavated the area for the new dam and concrete structure; 
  • Removed the temporary cofferdam that was put in place early in the construction phase; and,
  • Built the main parts of the dam with reinforced concrete; 
  • Added overtopping protection; 
  • Installed riprap (rock) to protect the slope of the dam; 
  • Restocked the lake; and, 
  • Added a fence next to the dam.

Watch: Time Lapse of Construction 

Brockton Drive Dam Rehabilitation Phase 2 – Time Lapse

Watch construction of the new concrete structure for the lake on Brockton Drive. See the project from start to finish in 90 seconds! Upgrades address safety concerns with the dam and ensures that stormwater flows safely downstream when it rains.

Phase Contacts

 

Gilles Bellot, PE
Project Manager
919-996-4001

Lead Department:
Engineering Services

Crews paving part of Brockton Drive where we installed a new dam structure at the lake. 

A view from the webcam at the project site showing the new concrete structure at the dam on Brockton Drive. 

Concrete slabs that were put in place to building the spillway for the dam on Brockton Drive.

Crews building a new dam structure at a lake on Brockton Drive. They also built a cofferdam to divide the worksite and the upper lake. The cofferdam will be in place during construction. 

A round concrete pipe that drains water out of the lake on Brockton Drive. This pipe was too small and caused flooding in the neighborhood. 

Schedule

Date Activity
Fall 2018 Phase 1 construction complete
Spring 2019 Phase 2 design complete
Summer 2019 Phase 2 construction bid and permitting process
Winter 2020 Phase 2 construction begins
Summer 2021 Phase 2 construction complete (Date extended due to rain)

History

The spillway for the upper lake at Brockton Drive was in very poor condition. The upper lake also collected debris and flooded nearby homes during heavy rainstorms. The lower lake dam spillway was too small and there was severe erosion at the outlet of the pipe.

Phase One

The project included replacing stormwater drainage and sanitary sewers, and transforming the upper lake to a stream channel. The stream channel flows through the newly constructed stormwater infrastructure into the lower lake. These changes will improve the channel's water quality and reduce flooding to nearby homes. 

Brockton Drive Dam - Rehabilitation Phase 1

Check out the changes that were made at Brockton Drive Lake to reduce flooding and improve water quality.