Dam Construction

Southern Highlands

  • 25+ Years of Experience
  • Family-Owned & Operated
  • Reliable, Quality Workmanship

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An Excavator is Digging a Hole in the Dirt on a Construction Site — Simon Dickson Excavations in Moss Vale, NSW

Southern Highlands Dam Construction

Water security matters—whether you're managing stock, planning irrigation, or preparing for dry conditions. At Simon Dickson Excavations, we deliver professional dam construction services across the Southern Highlands, helping rural property owners and landholders create reliable water storage solutions that are built to last. From small farm dams to larger-scale excavation work, we shape and structure each dam to suit your land’s natural flow and purpose.


With more than 25 years of experience and a deep understanding of local terrain, we approach each job with a mix of practicality and precision. We assess your site, check for natural catchment potential, and use the right equipment to dig, compact, and contour your dam for maximum holding capacity and minimal erosion. We know how important it is to get this right—not just for today, but for the long haul.


Call 0412 929 892 to talk about dam design and site options, or get a quote on your next project.

Earthworks For Sustainable Water Storage

A well-built dam does more than hold water—it protects your land, supports your operations, and provides long-term value. We handle all aspects of dam construction in the Southern Highlands from initial site planning and excavation to shaping spillways and compacting embankments. Whether you're after a new build or upgrading an underperforming dam, we’ll deliver a functional solution tailored to your needs.


Every site is different, so we customise the depth, size, and structure based on how you’ll use it—whether for livestock, firefighting reserves, or general property management. We take slope, soil, and rainfall into account and always build with safety and sustainability in mind. If you need an earthworks team that understands rural water storage from the ground up, we’re ready to help.

A Dump Truck is Dumping Dirt Into a Pile of Rocks — Simon Dickson Excavations in Moss Vale, NSW

Frequently Asked Questions

  • Do I need a permit or approval to build a dam?

    In many regions, building a dam—especially one over a certain size or near watercourses—requires approval from local councils or water authorities. The requirements vary depending on the intended use, location, and potential environmental impact. It's important to check local regulations or consult a planning professional before construction begins.

  • What’s the best location on my property for a dam?

    The ideal location combines good catchment potential with minimal environmental disruption. Look for natural low points where water already flows or collects. A suitable site should have clay-rich soil to reduce seepage, be away from structures or septic systems, and have space for an overflow or spillway system.

  • How do you ensure a dam is structurally sound and watertight?

    A dam’s strength depends on good design, proper excavation, and thorough compaction of suitable materials—usually clay. Building embankments in layers, shaping the walls to resist pressure, and managing inflow and outflow with spillways all help prevent leaks, erosion, or collapse.