I Rio Aquidaban i umlambo Ukuhlamba Paraguay. Wazalelwa Amambay y entabeni lomqolo ubaleka kwicala empuma-ntshona for km 250 kuwo onke amasebe ka Amambay kunye Concepcion, ephela e Paraguay River ebingasentla komzi ka Concepcion. Kuyinxalenye La Plata Basin aphambili ngabafakwa uviko unguye Trementina kunye Negla imilambo yawo.