Silt Removal & Dam
Desilting in South Africa
Every dam silts up over time. Erosion from surrounding land, decaying vegetation, and upstream run-off all deposit fine sediment that accumulates on the floor of your dam year after year. Left unmanaged, silt build-up dramatically reduces water storage capacity, accelerates weed growth, degrades water quality, and shortens the functional lifespan of your dam.
Dart provides professional silt removal and desilting services for farm dams, irrigation dams, golf course ponds, estate water features, and wetlands across South Africa - using purpose-built equipment that extracts sediment with minimal disruption to the dam and surrounding environment.
Signs your dam needs desilting
- Reduced water volume - the dam fills to a lower level than it used to
- Increased weed and algae growth - silt is nutrient-rich and fuels plant growth
- Murky or discoloured water that doesn't clear after rain
- Shallow areas appearing near inlets or along previously deep banks
- Irrigation output has decreased despite normal rainfall
Our silt removal process
Dart uses long-reach and amphibious excavators to excavate and remove accumulated sediment. Our approach is tailored to your dam's specific conditions:
- Site assessment - we measure sediment depth and volume before work begins to plan the most efficient approach
- Mechanical extraction - sediment is excavated using appropriate equipment and deposited at a designated site away from the dam
- Shoreline protection - we work from the water or from extended reach to avoid disturbing banks, vegetation, and infrastructure
- Minimal downtime - dams remain filled during most desilting work, with no need for draining
Silt as a resource
Extracted dam sediment is often nutrient-rich and makes excellent agricultural soil amendment. Where feasible, we can advise on appropriate uses for the material removed from your dam, adding value to the project beyond just restoration.
Frequently asked questions
Here are some common questions about silt removal
Costs vary based on the volume of sediment, dam accessibility, and equipment required. Dart provides free site assessments and quotes tailored to your specific project. Contact us to discuss your dam.
In most cases, no. Dart's amphibious and long-reach excavators can remove silt with the dam full or partially filled. Draining is only necessary in specific circumstances and will be discussed during the site assessment.
Is your dam silting up?
Let's assess it together - contact Dart.