Final answer:
Common features along low-gradient rivers include floodplains, meanders, and single channels, as they flow through broad valleys or flat plains. River terraces, waterfalls, and steep drainages are not typically found in these types of rivers.
Step-by-step explanation:
The common features located along low-gradient rivers typically include floodplains, meanders, and single channels. Low-gradient rivers have gentle slopes and flow slowly through broad valleys or flat plains. As a result, these rivers tend to have wide floodplains where sediment is deposited during floods, leading to the formation of fertile land along the banks.
On the other hand, river terraces, waterfalls, and steep drainages are not typically associated with low-gradient rivers. River terraces can be found in areas where the river has cut through its own floodplain, leaving a step-like formation. Waterfalls and steep drainages are more common in high-gradient rivers where the land elevation changes significantly, causing a more vertical drop and faster water flow.