Complex sentence: The swamp rises in Calhoun County and flows to the confluence, in an unusual braided pattern; it has no well-defined channel, but multiple channels that start and disappear, yet maintain a flow.
Split into simpler sentences: The swamp rises in Calhoun County and flows to the confluence. The river is noteworthy for its unusual braided pattern; it has no well-defined channel but instead has multiple channels that start and disappear, maintaining a flow.