Fisheries, like any other waterbody overtime can suffer from a reduction in depth and even, if left unchecked, can eventually dry out due to the build up of silt and sediment. This is formed due to debris from many different sources, from fallen leaves to decayed plants and animal waste, these all contribute to the formation of silt and sediment. Soil that has been washed in from streams or from the canal banks during heavy rainfall can also contribute to this. As the excess of organic matter increases it will become necessary to remove the silt and sediment by mechanical dredging or other means.
When dredging a fishery the first stage is to establish exactly how much silt needs to be removed. To understand the best place to place the removed silt and how exactly to remove the silt this calculation is required. From silt samples and a Bathymetric survey, it’s possible to devise the consistency of the silt, which gives a guideline to the time frame required for the removal process.
At Heathland Group we use the latest technology to gather the required information about silt, this is done in one of two ways;
- 16ft Manned Survey vessel
- Remote Survey ASV Drone
Using either of these options will collect detailed information about the fishery bed. Other information will also be provided by the survey, for instance information about hard materials, such as stone and rock and softer areas such as sand etc.
Using GPS enabled equipment, we are able to generate a full report, which can clearly identify the problem areas and enables us to accurately produce quotations to carry out the clearing of unwanted silt from fisheries.
The ASV drone is also able to auto-navigate the fishery and complete its own surveys where visual access to the entire fishery is impossible. The manned survey boat requires an access point whereas the ASV drone is easy to lift between two people and has minimum access requirements. The ASV drone has been a huge benefit to many of our clients and is exceptionally good in areas where little disturbance is wanted.
We supply all equipment and our services to domestic and commercial clients throughout the United Kingdom. For more information and advice about Hydrographic surveys or any of our products, such as pond construction, lake and pond maintenance or fishery and consultancy services, please email firstname.lastname@example.org or call 0800 3891990.