Surveying is one of the means of management. This practice calls to ensure the safety, reliability, along with the appropriate physical and functional integrity of a structure, place, building, land, etc. This process is applicable on all living and non-living entities existing on planet Earth. Cadastral means the structural and legal description of a piece of land. This includes the real estate monetary worth, boundary limitations, taxation, and ownership registration over a land property. Thus, cadastral surveys conducted by professionally skilled and licensed cadastral surveyors cover all these criteria to declare the land records and possession under a person’s name in the cadastral database system. So, the idea of cadastral registration is the core foundation of this survey. On the other hand, the opposite of land surveys is what is mediated in the water bodies-based surveys. This one is called as hydrographic survey which comprise on the physical assessment, judgment, observation, and resource management of all kinds of small to large water bodies like sea, oceans, rivers, coastal areas, lakes, etc. In comparison to the geographical surveys, hydrographical ones are tougher and difficult to execute as major surveying work is mediated down the water depths.
The land survey encompasses all the physical essentials that add into the legalities and compliance measures of lands. Cadastral surveys must be top-notch and up to the mark in accuracy, measurements, reliability, etc. that could support the legal defensibility of a given land premise. Land administration system has a lot to do with cadastral data as it aids in knowing the actual ownership, taxation, financial worth, boundary limits of a land to continue with any kind of redevelopments.
Cadastral surveys are based on principles of geography, geometry and trigonometry play huge role in measurements like distance, angles, elevations, mapping, etc. These key points are factors that can act as marker or monuments defining property boundaries, thus, aids in finding the right physical location of a land. No error significances should be avoided here, as it can create disturbance in topography of a place.
Hydrography is the study of water and water bodies. This is an independent domain of surveying that only covers the water-based areas on Earth. Such analysis is called as hydrographic survey which solely relies on collecting data of underwater and its constantly fluctuating environment. This type of assessment is important for freshwater and marine water as well as the life it holds and promotes in it. The plant, animal, marine, and other lives surviving underwater terrain is monitored in this surveying plan along with potential water currents and submerged hazards that can pose danger.
The equipment employed by officials performing hydrographic survey is the cameras, scanners, beams, navigation tools, etc. that measures water depth, seafloor, water current at shores and depth, etc. All this data collected is processed and analyzed by maps, navigation charts, digital 3D models, etc.
Cadastral surveys are the surveying procedure that are conducted on lands for obtaining data about the real estate value, legal ownership and description, taxation, and worth of it. In contrast, hydrographic survey is carried in water bodies like sea, ocean, rivers lakes, harbors, etc. This type of surveying is done to assess physical elements of water and how it affects life surviving in water.