Brockton Drive Dam

Last updated May 15, 2018 - 4:58 pm
  • Planning
  • Design
  • Construction
  • Completed
  • Lake & Dam Preservation
  • Approximately $4.5 million
  • Stormwater Management (Lead)
  • CDM Smith, Inc.
  • Carolina Civil Works, Inc.
  • Public Utilities Department

Current Activity

Posted Tuesday, May 15

Construction for the first phase of this project is nearly complete. The project includes draining the lake, replacing stormwater drainage and sanitary sewers, and transforming the upper lake to a stream channel. The new stream channel flows through the newly constructed stormwater infrastructure into the lower lake. Final work, including additional grading/leveling and planting in the project area, will be complete over the next few weeks.

Since the dam structure at the lower lake is not functioning properly, the lake will be drained through the start of the second phase of this project. This will limit the amount of water in the lake, which will reduce impacts from heavy rain storms and ensure the ongoing safety of residents living near the lake.

For your safety, residents are not permitted to enter the construction site. Work hours will be Monday through Friday from 7:30 a.m. to 5:30 p.m. with no work scheduled on the weekend or City holidays except in an emergency or with prior approval from the City.

If you have any questions about upcoming construction, contact Todd Rall, at 919-996-4006 or Todd.Rall@raleighnc.gov.

Summary

This project will provide dam and storm drainage improvements at the Brockton Drive dam by addressing dam safety concerns, reducing the frequency and severity of flooding in adjacent structures, and improving water quality, while remaining consistent with the City of Raleigh's Lake Preservation policy.

The Brockton Drive Lake and Dam Rehabilitation will be completed in two phases:

Phase I - Upper Dam: This phase includes removing the upper lake to restore the channel at Brockton Drive and increasing the size of the existing drainage pipe with a box culvert. Stream restriction at the downstream corner of Walden Woods Club House pool will be removed. The stream also will be stabilized and reshaped with plants/vegetation at the upper stream channel.

Phase II - Lower Dam: The spillway structure on the lower dam will be replaced and then the lower dam will be replaced with a roller-compacted concrete structure.

Images

  • Brockton Drive Stormwater Infrastructure
  • Brockton Drive Stream Channel
  • New storm drain at Upper Brockton Drive Lake (during construction)
  • Upper Brockton Drive Lake (during construction)
  • Upper Brockton Drive Lake (prior to construction)

Schedule

Project schedule with dates and descriptions
DateDescription
Summer 2016Bid proposal, Phase I design, easements acquisition, and private utility coordination complete
Fall 2016Phase I bid and award complete
Summer 2017Phase I construction begins
Winter 2018Phase II design complete
Winter 2018Phase I construction complete (Planting to possibly take place in Fall 2018)
Spring 2018Phase II construction bid complete
Summer 2018Phase II construction bid awarded
Fall 2018Phase II construction begins
Fall 2019Phase II construction complete

History

The existing spillway for the upper lake at Brockton Drive is currently in very poor condition. The upper lake collects debris and, in intense storms, floods adjacent structures, which are occupied. The lower lake dam spillway is undersized and there is severe erosion at the outlet.

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