What defines a rectangular drainage pattern?

A rectangular drainage pattern is characterized by streams that exhibit right-angle bends, resulting in a network of channels that form a rectangular or grid-like layout. This pattern typically occurs in areas where the underlying geology consists of jointed or fractured rocks, which influence the flow of water. The water tends to follow the paths of least resistance, often turning sharply at the intersections of these geological features, thus creating the distinct right-angle turns seen in this type of drainage system.

The presence of right-angle bends is what sets this drainage pattern apart from others, such as dendritic or radial patterns, where the shapes and angles of the streams differ significantly. Understanding this pattern is essential for studying hydrology and topography, as it relates directly to how water moves across the landscape and how the geological features shape the overall drainage network.