A C-shaped lake formed when a river meanders almost in a
full circle. The water cuts across the narrow neck, and deposits of silt
at the entrances to the original meander
eventually isolate it from the main body of the river.
|Oxbow lakes are formed when the neck of a looping
meander is broken through (A), usually during times of flood. The
entrances to the bypassed meander are soon blocked by silt (B).