Riverward boundaries are channel border zones. Boundaries are the apparent shorelines. The downstream boundary for contiguous abandoned channel lakes is a line that is a continuation of the apparent shoreline of the lake. Abandoned channel lakes vary greatly in size. The shape of most abandoned channel lakes reveals their origins as former channels.
Boundaries are the apparent shorelines.
The boundary is a line that is a continuation of the apparent shoreline of the channel. This type of lake is formed between the natural levee and the high ground that defines the edge of the floodplain of the river. Lateral levee lakes are also formed where natural levees impound tributary streams. Boundaries are the apparent shorelines and the boundaries of other more clearly delineated aquatic zones. On lakes formed at the mouth of tributary streams, the upstream boundary is the boundary of the study area.