What are requirements and contents of inland waterway survey in Vietnam?

Pursuant to Article 7 of the Circular 36/2021/TT-BGTVT (takes effect from 01/03/2022) stipulating requirements and contents of inland waterway survey in Vietnam as follows:

- General requirements for inland waterway survey

+ Surveying tasks and technical solutions must be produced depending on type and technical grade of the inland waterways and survey classification;

+ Technical surveying solutions must satisfy requirements of surveying tasks and comply with applicable technical standards and regulations on construction survey;

+ Survey must adhere to technical surveying tasks and solutions, ensure environmental safety and protection, meet requirements of surveying tasks, and must be inspected, supervised, and commissioned as per the law;

+ Surveying topographic map uses VN2000 coordinate system, local longitude and VN2000 coordinate system, national longitude;

+ Periodic survey: topographic map must show coordinate, elevation of the bottom, range, centerline, protective corridor, chainage, and signaling system (if any) of inland waterway; water level at the time of measurement, information on topography, administrative division, landmarks, chainage, and works along inland waterway;

+ In case of irregular survey: topographic map must show coordinate and elevation within the surveying range, centerline of inland waterway, chainage, and other relevant information; water level at the time of measurement;

+ In case of regular survey: topographic map must show depth of inland waterway where shoals and obstacles are located; water level at the time of survey; changes of inland waterway signaling devices (if any); other necessary warnings.

- Contents of periodic and irregular inland waterway survey

+ Surveying tasks and production of technical surveying solutions;

+ Collecting and analyzing data and documents;

+ Field inspection;

+ Building coordinate and elevation; measuring topography on land and underwater;

+ Measuring and monitoring hydrography;

+ Processing data and producing surveying results;

+ Other surveying tasks.

- Contents of regular inland waterway survey shall comply with regular maintenance standards of inland waterway.

- Development of electronic hydrographic map shall be prioritized for inland waterway on water transport corridors, primary transport routes, waterways where foreign vessels, watercrafts are operating and updated after each periodic survey.

Best regards!