Critical areas for sediment delivery to the Chubut River, Patagonia Argentina: geomorphological evidence from the Sagmata pilot basin

BILMES, ANDRÉS; CUITIÑO, JOSÉ; BOUZA, PABLO; SCIVETTI, NICOLÁS; ROSTAGNO, MARIO; PASCUAL, MIGUEL

JOURNAL OF MAPS

JOURNAL MAPS

Año: 2023 vol. 19

1744-5647

Sediment discharge events in the lower basin of the Chubut River (Patagonia, Argentina) Received 21 December 2022associated with rainfall events generate serious problems for drinking water purification of Revised 20 July 2023more than 250,000 inhabitants and the support of livestock farming activity of about 42,000 Accepted 27 July 2023ha in the region. Identifying the areas of potential sediment contribution to the Chubut KEYWORDSRiver and the conditions necessary for erosion and sediment transfer is of vital importance Sediments; badlands;to mitigate the negative impact of sediment discharge into the river and to establish water watershed; aridmanagement plans. environmentsWe conducted a detailed geomorphological study in a 110 km2 tributary watershed of theChubut River (Sagmata pilot Basin), and identify potential sediment production zones. Webased our analyzes on concomitant studies that indicate that the sediment remobilization islinked to the location of the drainage networks, especially in regions associated withbadlands and erosional scarps formed on Paleogene continental deposits.