Rivers like any other water body can over time become shallow and sections can even dry up completely, due to the build up of silt and sediment. Many forms of organic matter can contribute to the build up of silt, these include things such as leaves, dead aquatic plants, fallen trees and animal waste. Soil that has been washed into the river either from streams or simply washed down from the river banks can also contribute to this. As the amount of excess organic matter builds up within the river it becomes necessary to remove the silt and sediment build up, either by mechanical dredging or other means.
Generally when it comes to any river dredging project the best way to start is to determine exactly how much silt has collected in a section of the river to find out how much needs to be removed. The amount of silt that needs to be removed governs which is the best method of removal and also to helps us to understand where best to dispose of the silt after removal. Using a Bathymetric surgery and silt sample from the river section we are able to establish the consistency of the silt, which in turn gives us a guideline as to the time frame that would be required for the removal.
We use the latest silt surveying technology
Heathland Aquatic Engineering uses the latest technology to gather the required information about silt and sediment build up. There are two methods that we commonly use to asses the level of silt in a river or river section.
- 16ft Manned Survey vessel
- Remote Survey ASV Drone
Using either of the options will achieve the same results. They are both able to give detailed information about the river and the sediment and silt build up. The survey also provides other information, for instance, it will give information about hard and soft materials within the river bed such as stones and rocks or sandy areas.
ASV Drone for Silt Surveys
Heathland Aquatic Engineering's ASV drone is easy to lift and manoeuvre by two people and requires minimal access to the area of the river where the surveying is needed, whereas the manned survey boat requires an access point. In some situations the ASV drone has even been able to auto-navigate the river to complete any surveys where visual access is not possible. The ASV drone is exceptionally good where little disturbance is preferred making it an extremely beneficial form of silt survey for many of our clients who are concerned with environmental and wildlife issues, and the preferred method of choice.
Using GPS enabled equipment, we are able to generate a full report on the silt, which can clearly identify any problem areas and enables us to accurately produce quotations to carry out the clearing of unwanted silt from rivers.
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 [email protected] or call 0800 3891990.