Automatic measurement of water level converted into flow and electrical conductivity at the outlet of a 1st order catchment along specific vegetation catena (fallow, forest, bush savannah). The catchment is constituted of hillslope and a bas-fond. For small stream, calibration of the stage-discharge relationships is made by stream-gaging surveys using a wading-rod (velocity-area method). A value = 9999 stands for a dry gully.

Manual groundwater level for some wells and hourly groundwater measurements for others equipped with a logger. The water table level values are expressed from the soil surface.

Automatic measurement of water level converted into flow and electrical conductivity. Calibration of the stage-discharge relationships is made by an Acoustic Doppler Current Profilometer

Automatic measurement of water level converted into flow and electrical conductivity. Calibration of the stage-discharge relationships is made by an Acoustic Doppler Current Profilometer. A value = 9999 stands for a dry river.

Rainfall measurements collected since 1999 by recording raingauges to complement and densify the Oueme (CL.Rain_O) network, in particular over the Donga basin. NB: Negative values are missing values. Negative value other than -9999.9 is missing value estimated from the bucket. For a period with such missing data, although the same value is indicated for each timestep, the value applies to the whole time period.

Measurements of water level, electrical conductivity and water temperature are made by multi-level piezometers (<1m, 2m, 10m 20m depth) installed on each drilling site along specific vegetation catena (fallow, forest, bush savannah). Automatic measurements for the most superficial piezometers and manual measurements every two days for the others. The water table level values are expressed from the soil surface. A value = 9999 stands for a dry borehole.

Rainfall measurements collected since 1999 (Long Observation Period) by recording raingauges over the Oueme basin (1.4-2.9°E; 8.9-10.2°N). It was designed for a homogeneous coverage of the basin with 29 gages. NB: Negative values are missing values. Negative value other than -9999.9 is missing value estimated from the bucket. For a period with such missing data, although the same value is indicated for each timestep, the value applies to the whole time period.

Measurements of meteorological variables. The sensors are attached to a 2m hight mast, the wind is measured at 2 m. Measurements are made at 10 s intervals, data are averaged and recorded every 15 min in the data logger.

Sap flow measurements for the dominant tree species in a shrub fallow (Vitellaria paradoxa - shea tree) and a dry forest (Isoberlinia doka), to estimate transpiration at the tree and stand scale.

Measurements of meteorological variables. Measurements are integrated on 30 minutes time step.