"endorheic" refers to basins that Have no outflow to the sea.

Endorheic basins are closed drainage systems where water does not flow to oceans or seas. Instead, any water that enters these basins—through precipitation, rivers, or runoff—evaporates or seeps into the ground. As a result, endorheic basins often accumulate minerals and salts over time, leading to features like salt flats and saline lakes. The Great Basin is a prime example of an endorheic region, where water is retained within the basin, contributing to its unique geological and ecological characteristics.