Emmarentia Dam to receive R25 million upgrade

The Johannesburg Roads Agency (JRA) is embarking on an 8 month rehabilitation project for Emmarentia Dam at a cost of R25 million.

The dam is located on the Westdene spruit which is a tributary of the Juskei River and is a popular recreational venue for the residents of Joburg.

At 103 years, the dam’s ageing infrastructure, erosion, corrosion and several significant floods have necessitated the City’s investment in proactive maintenance of this landmark. “While Emmarentia dam had significant improvements undertaken in 1988, a comprehensive investigation recently undertaken by the JRA confirmed that preventative maintenance and flood retention protection is required to safeguard the dam’s integrity and ensure the safety of residential properties downstream”, confirmed JRA Acting Managing Director Mpho Kau.

“The investigation revealed some subsiding with the dam wall slope stability to be potentially at risk, and that urgent repairs are required to the return channel as a major flood could undermine the existing gabion and concrete walls causing significant structural damage, while continued erosion could expose the banks and possibly undermine existing municipal roads located in close proximity to the right hand side of the return channel”, explained Kau, “ In addition, the Olifants road located along the crest of the dam’s embankment has also been affected by possible leakages within storm water inlet structures requiring repairs and road reconstruction.”

The rehabilitation project, which started in April 2015, is being undertaken in accordance with the City of Johannesburg Stormwater By-Laws and Dam Safety Regulations considering the dam is classified as medium sized with a category III High Hazard Potential Rating.

The project scope includes:

- Improving the flood prevention facility system to protect properties located downstream of the dam from flooding. This includes excavating and repairing the pipework and surrounding soil at the stormwater structures located along the dam, altering outlet structures; repairing the box culvert outlet, widening the control section and constructing a gabion wall on the eastern side of the outlet;

- Repairing the dam wall by strengthening the stone protection layer;

- Addressing the obstructions currently located in the upstream of the culvert spillway which decrease the capacity, including the removal of the canoe storage shed located in the immediate vicinity of the spillway inlet as this poses a serious risk in terms of public safety;

- Removal of trees located on the side of the left bank, as well as a large Plane tree on the upstream embankment, which, following consultation with academics will grow significantly in size potentially becoming detrimental to the embankment integrity;

- Implementing protection measures to prevent future erosion caused by the high volumes of flooding water which includes gabion wall reconstruction and repairs as well as reconstructing the bottom of the channel;

- Construction of a concrete wall in the area where the channel comes in close proximity to the roadway to prevent damage to the roadway, as well as reconstruction of the Olifants road;

- Repairs to a portion of the wall which is subsiding next to the bridge support; and

- Negotiations with the Canoe and Sailing clubs and investigations of alterations to the Club’s configurations.

“We look forward to the completion of these preventative measures which will ensure the dam has the capacity to convey a flooding event of the 25 year recurrence flood peak value, and we request the community’s cooperation whilst work is underway as all rehabilitation will be undertaken without draining the dam” said JRA Acting Managing Director Mpho Kau.

The project which commenced in April 2015 is envisaged to be completed in January 2016.

  Comment on this Article

  Please login to post comments

Post to my facebook wall
Characters remaining

    Latest Property News
    • 25 Apr 2018
      Whether you are a seasoned seller or new to the game, putting your home on the market is an exciting moment. To ensure you get the best possible outcome these 8 value adding additions to your home is worth the effort.
    • 25 Apr 2018
      After four years of unprecedented growth fuelled by semigration, the Southern suburbs market faced a number of challenges in 2017, including dwindling affordability and a marked slowing in house price growth with many sellers forced to lower their prices in order to secure a sale.
    • 25 Apr 2018
      Mall of Africa, is celebrating its second year of sensational success. This splendid super-regional shopping centre first opened on 28 April 2016, and has grown in popularity, performance and profile since then.
    • 25 Apr 2018
      While the role of trustee in a sectional title scheme is a voluntary and unpaid position, it is one that comes with huge responsibility. Trustees have a fiduciary duty towards their scheme, says Chinelle Hewit, Operations Manager at sectional title finance company Propell.
    • 24 Apr 2018
      The thing about the property ladder is that at some point in our lives we all have reason to want to climb a rung or two higher. Sometimes, it’s because we’ve outgrown our previous dream home, or because we want to be in a better neighbourhood that’s closer to work or to schools. Sometimes it’s because our circumstances have changed, and we’re taking care of elderly parents or relatives. Sometimes, it’s just because we want a property that reflects the financial status our hard work has won.
    • 20 Apr 2018
      Whenever changes in the political ecosystem of a traditional property market create uncertainty, smart investors begin to look elsewhere for new opportunities. Property experts at IP Global have analysed the trends and crunched the numbers to find new markets to explore in Europe and the United States.
    • 20 Apr 2018
      Energy and water self-sufficiency are increasingly important factors in home buyers’ choice of property – especially in Cape Town where the extreme drought of the past few years has made municipal supply costly as well as uncertain.
    • 19 Apr 2018
      During the last decade, rampant development has progressively transformed Cape Town’s property landscape with densification being the order of the day, but there are still one or two hidden gems like Scarborough which have retained their original character, offering an inimitable lifestyle and an attractive investment opportunity.
    Subscribe to the MyProperty Newsletter

    Last Name  
    Email Address  
    Email Frequency
    Share this Page

    For Sale Property
    Rental Property
    More Options
    Connect with us