Technical regulations for river basin water level monitoring using remote sensing technology in Vietnam

Mathematical foundations

- River basin water level monitoring uses the WGS-84 Global Coordinate System and Reference System for Geographic projection.

- Water level elevation of the river basin when calculating with reference to the EGM2008 global geo-oil reference.

Job description

(1) Collect and enter data.

(2) Determine the coordinates of the satellite altitude measurement.

(3) Determine the exact geographical coordinates of the virtual station.

(4) Calculate water level height.

(5) Export data in ASCII format.

(6) Extract measurement values according to water surface objects.

(7) Calculate average water level with accuracy.

(8) Monitoring water level changes in river basins.

(9) River basin water level monitoring products.

(10) Inspect, accept, and deliver products.

River basin water level monitoring products in Vietnam

- Satellite altimeter data is recorded on digital storage devices.

- Remote sensing image data is used in monitoring river basin water levels recorded on digital storage devices.

- Report on the results of calculating the water level height of the river basin at virtual stations must be recorded on digital storage devices.

- Report on the results of calculating the series of water level changes over time at virtual stations must be recorded on digital storage devices.

- River basin water level monitoring reports must be recorded on digital storage devices.

The stages of inspection, acceptance, and product delivery

Technical inspection and product acceptance include the following stages:

- Inspection and acceptance at the construction unit level;

- Inspection and acceptance at the investor level;

- Appraisal and acceptance of product quality and volume documents.

The product is delivered after being subjected to technical inspection, quality assessment, and acceptance at the investor level.

More details can be found in Circular 16/2023/TT-BTNMT, taking effect on December 15, 2023.

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