Illustration of different entrenchment ratios. (Adapted from Groenier and Gubernick, 2010).

Cross sections of three different streams showing an entrenched stream with a ratio less than 1.4, a moderately entrenched stream with a ratio between 1.4 and 2.2, and a slightly entrenched stream with a ratio greater than 2.2. The entrenchment ratio is the flood prone width divided by the bankfull width.