What Does a Hydrographic Surveyor Do?

Hydrological measurement stations are grass-roots hydrological institutions that observe and collect hydrological and meteorological data of rivers, lakes, reservoirs and other water bodies. The content of hydrological survey is closely related to the proposed environmental impact prediction method. When adopting a mathematical model, its content should be determined according to the selected prediction model and the needs of the input of environmental hydrological characteristic values and environmental hydraulic parameters.

Hydrological measurement stations are measurement points located next to water bodies such as rivers, canals, and reservoirs. They systematically observe water levels and discharges. Based on the continuous records from these measuring stations, hydrologists can forecast the water level and flood activity. Decide on control, shipping and similar issues. The observation instruments used are

The content of hydrological survey is closely related to the proposed environmental impact prediction method. When adopting a mathematical model, its content should be determined according to the selected prediction model and the needs of the input of environmental hydrological characteristic values and environmental hydraulic parameters. When using a physical model, hydrological surveys should mainly obtain sufficient models and model tests.

Hydrological elements observed at hydrological stations include

The staff of the hydrological surveying station must abide by the national hydrological technical standards, specifications and regulations, and carry out hydrological surveying and other services in strict accordance with the "measuring station task book" and the requirements of superiors. Without the approval of the Provincial Bureau of Hydrology and Water Resources, it is not allowed to change the test items without authorization, and it is not allowed to lower the standard for measurement and reporting without authorization.

Establish a hydrological measurement and reporting emergency mechanism, and report to the local government, the flood control and drought relief command department, and the water administrative department in time when sudden disasters such as abnormal rainstorm, lightning strike, flood, mountain torrent, mudslide, dam break, and breach occur.

For hydrological surveying stations, the observers should bring record books and measuring tools to the site in advance to make preparations, and make punctual measurements. It is strictly forbidden to advance or drag behind. When there are many punctual observation items, they should follow a fixed sequence. Observe in turn.

The hydrological survey station shall record the data recorded on site with a hard pencil (2H), so that the writing is neat, the handwriting is clear, and the project is complete. It is strictly forbidden to alter, alter, or change the characters. All the data required for proofreading, proofreading, and proofreading should be tested onsite at the school, and problems should be corrected on the spot or remedial measures should be taken immediately. For automatic acquisition instruments, the measurement station should be calibrated regularly, and the operating conditions of the instruments and equipment should be checked frequently to ensure their normal operation.

The hydrological surveying station shall adhere to the four follow-up working system of follow-up measurement, follow-up calculation, follow-up analysis, and follow-up analysis, and complete the task on time, quality and quantity to ensure that the hydrological survey data is accurate and reliable.

Hydrological measurement stations should strengthen the verification of the original data of the measurement stations, strictly calculate the two schools, check the quality of the original data, and timely draw various process lines and relationship diagrams. We must attach importance to data analysis and study the changing rules of various hydrological elements. In addition to accurate data and correct methods at the station reorganization work, the focus should be on clarifying the characteristics of the measurement station, the upstream and downstream conditions, and the rationality inspection and analysis of various hydrological elements.

Hydrological data should be properly managed, forgery is strictly prohibited, and stored in data cabinets in different categories to prevent loss, burnout, damage and serious pollution. The entrusted station materials should be well handed over and backed up.

The hydrological measurement station shall formulate and implement more than two practical flood measurement plans according to the specific conditions of the station's measurement and reporting tasks, flood characteristics, instruments and facilities, and personnel to ensure that they can be measured and reported in the event of an over-standard flood.

Hydrological survey stations must strictly implement the "Water Information Flood Task Book" to provide accurate and timely hydrological information, so as to make calculations, reports, reports, reports, and reports late.

The hydrological surveying station shall adopt the method of roving survey or visit to conduct on-site surveys of the water regime, working conditions, disaster situation, the oversized flow, heavy rainfall and minimum dry water flow that occurred in the year, the flood, Collect breaches, inundation areas, droughts, and other major events, as well as their specific locations. Collect relevant information and write a special investigation report. In addition, hydrological survey stations should do a good job of monitoring soil moisture in accordance with relevant regulations. ^[4]