The water table depth from the soil surface is measured at different points in the Kamech catchment. In Kamech site, the groundwater is shallow with a free surface water table rising and falling in the soil and subsoil layers. The measurements are made at different points in the catchment with piezometers. A piezometer is a perforated PVC tube at its base installed in the soil through a borehole. In every piezometer, the water table depth is measured by manual piezometric probe or monitored at high frequency (~15') with autonomous and automatic probe integrating acquisition units. Through the OMERE data portal accessible from this website, the data can be downloaded from an interactive map.

Water sampling in rain, runoff and undergroundwater are performed on the fields and send to a specialized laboratory to quantify major elements contents (Ca, Mg, Na, K, SO4, PO4, HCO3, NO3) ( FILTRATION ???. PH ??? ? EC, ???)

Pesticide contents are determined on the suspended matter extracted by filtration (0,7µm) in runoff water. Contents allow quantification of particula transport of pesticides and allow too compare it to solute transport.

The evaluation of soil moisture in different areas of the Roujan catchment area is carried out by measuring the moisture content of fresh soil samples.

The monitoring of suspended sediment loads in runoff and stream flows aims to quantify the amount of sediments translocated during runoff events. These measurements contribute to the understanding and the quantification of the soil redistribution induced by water erosion processes. The measurements of suspended matter are made through manual and automated water sampling at the hydrological stations, which are then processed and analysed in the laboratory to derive suspended sediment concentrations. A turbidimeter has been recently installed to complete the time series of sediment discharge. Suspended sediment concentrations are integrated into the HYSAE database, they can subsequently be consulted and downloaded via the OMERE data portal.

The thematic map provided allows you to visualise the measurement points concerning this data acquisition device. This map is accessible via a standardised WMS flow, but also enables the data sets associated with the measurement point to be downloaded, depending on the case, via the ORE OMERE data portal.