High embankment that runs parallel to a river. They can be made of
rock or soil, and occasionally have concrete as well. They are built to
contain the water in the streambed, and prevent flooding. Levees tend
have broad bases, and taper to a narrower top. The photograph shows a
covered artificial levee along the Mississippi River. In large storm
events, levees may not be able to withstand floodwaters and sometimes
levees may be intentionally breached to prevent flooding further
downstream as shown in the video.