There are two types of incised meanders, entrenched meanders and ingrown meanders. entrenched meanders are symmetrical and form when the river downcuts particularly quickly. ... They form when the river downcuts at a less rapid pace, giving the river opportunity to erode laterally as well as vertically.

What is a entrenched meander?

: incised meander specifically : one with slopes of about the same steepness on each side of the stream — compare ingrown meander.

What are incised or entrenched meanders?

Incised meanders are meanders which are particularly well developed and occur when a river's base level has fallen giving the river a large amount of vertical erosion power, allowing it to downcut. ... Entrenched meanders are symmetrical and form when the river down cuts particularly quickly.