Monitoring of water in the natural environment
The Côte-d'Or Department is characterized by its particular geographical situation at the head of three major river basins: Loire-Brittany, Seine-Normandy and Rhône-Méditerranée.
These three major watersheds are made up of :
The Department carries out qualitative and quantitative monitoring of ground and surface water. This patrimonial network, started in 1994, allows to refine the knowledge of the state of water resources and aquatic environments.
Today the network has more than 200 monitoring points, 170 for qualitative monitoring and 30 for quantitative monitoring. These monitoring are subsidized and are the subject of partnership agreements with the Water Agencies.
The quantitative network consists of 17 piezometers measuring the levels of the main aquifers and 13 hydrometric stations. The main purpose is to assess river flows and groundwater levels.
The data are recorded throughout the year, in variable time steps ranging from a few minutes to an hour depending on the configuration of the point and the needs of the study.
The data are collected during regular visits (every 4 to 6 weeks) or transmitted directly. The LNS stations from PARATRONICLNS stations, equipped with SNA piezometric sensors or CR420 radars, have been chosen to ensure the acquisition of water level measurements and the data repatriation (GSM/GPRS/3G modem).
Monitoring is subcontracted to an external service provider (M2E) for surface water and to BRGM for groundwater.
The collected data are checked, formatted and deposited in the national databases: in ADES for groundwater and in the HYDRO BANK for surfacewater.
LNS acquisition stations have been specially developed to meet this type of problem: monitoring of sensitive natural environments by sensors, data banking and transmission, triggering of alerts, etc.
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