Banco Miguel is a prominent sandy shoal and ebb-tidal delta located at the mouth of the Río Negro estuary on the Atlantic coast of Buenos Aires Province, Argentina. This dynamic marine environment is characterized by well-sorted fine sand and is part of a mesotidal coastal system. The shoal forms alongside Banco La Hoya, and together they constitute the estuary's ebb delta, which exhibits an asymmetrical shape primarily influenced by northward longshore sediment transport. The area is a significant geomorphological feature where active channels separate the shoal from the mainland coast, with water movement strongly governed by tidal cycles.