In the process of planning the revitalization of water bodies, the first steps are to determine the current state and survey of the water body. The required data are, in particular: the total volume of sediment in situ, in the water area, or in the designated area the thickness of the sediment layer in individual areas of the water surface bathymetric measurement topography of the bottom of the water surface sediment quality water quality We carry out the survey of the water area from the surface using a boat with the necessary professional equipment. We most often use a sub-bottom profiler to determine the volume of sediment deposited at the bottom of the water surface, its structure and the thickness of the layers. This is a special sonar whose sound waves penetrate the sediment. At the physical interfaces, these waves are reflected back, which enables the creation of a digital sonar image of the bottom topography of the water surface, the total thickness of the sediments and their structure. We also target the topography of the water surface with multi-beam sonar. We process and analyze the collected data from the field in selected software. The output is mainly a depth map, transverse profiles of the bottom, a digital terrain 3D model. It is thanks to this background that it is possible to determine the most problematic places in the lake or in the water course. If it is a water area for which original project documentation exists, based on the named documents, we can add data on the current volume of sediments and the thickness of sediments in individual areas. For the purpose of qualitative assessment of sediments, it ensures sampling using a special sampling rod, which enables sampling from all layers of sediments and their subsequent visual distinction. Laboratory analyzes are then carried out on the samples taken, focusing primarily on the content of manufacturing substances and heavy metals. Based on the results of the laboratory analysis, a qualified person will determine in the assessment the possibility of using or disposing of bottom sediment. We take water from the water surface, but also from the source from several points and layers of the water column. Laboratory analysis is most often focused on microbiological parameters and the content of substances determined based on the needs of the given project. The post Water surface survey appeared first on Progroupe.
Vegetation in the vicinity of water bodies affects light conditions by shading, reduces the supply of soil particles to the water environment by wind action, protects banks and drains nutrients. In the case of water bodies with no or minimal water flow,
prejsť na článokIn April 2021 a owner of a private pond with the surface area of 360 m2 in Dolná Seč municipality (Levice district) called us for a rescue. The owner battled overgrowing common reed time and again in his pond. Common reed (Phragmites australis) grows 4 me
prejsť na článokWe usually approach the processing of sediments if the conditions for the creation of sedimentation areas-lagoons are not suitable in the area of the implementation of the contract. Due to insufficient free space or due to high groundwater levels. Sedim
prejsť na článokWhen, while the lovely valley teems with vapour around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the t
When, while the lovely valley teems with vapour around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by th