Time-series variability of solute transport and processes in rivers in semi-arid endorheic basins: The Okavango Delta, Botswana.

We investigated hourly time-series of total dissolved solids (TDS) in the Okavango River at the inlet and outlet of the Okavango Delta (Delta) in semi-arid Botswana. We estimated the solute flux into and out of the Delta. Our objectives were to (1) document the temporal variations of solutes (represented by TDS) in the Okavango River and determine the processes that control the variations in solute concentrations and (2) quantify the solute load into and out of the Delta.