Despite their high curvature, large mature bends frequently exhibit the lowest migration rates in a river system.

In fluvial geomorphology, refer to the advanced stages of river meander development where the channel has achieved a high degree of curvature, often approaching the threshold for a cutoff event. This write-up details the structural and behavioral characteristics of these features. 1. Morphological Characteristics

In a typical meander, sediment deposits on the inner convex bank (point bar). In mature bends, a "phase lag" between flow and curvature can lead to the formation of counter point bars on the concave bank.

The maturity of a bend often indicates it has reached a state where energy losses caused by the curving flow are minimized.