The Severn Upper is a tidal estuary water body in Gloucestershire, United Kingdom, forming a significant part of the larger Severn Estuary system. This section, defined from the confluence with the River Teme to the confluence with the River Avon, is characterized by powerful tidal flows and mixing, which shape both the fishing environment and the water quality. The area includes designated sites of scientific interests, such as the Old River Severn Upper Lode SSSI, highlighting its ecological importance. Angling here is primarily an inshore saltwater pursuit, influenced by the dramatic tidal range and the estuary's unique geography.