1. Meanders: These are winding curves in the river's course. They form due to a combination of erosion on the outer bank (where water flows faster) and deposition on the inner bank (where water flows slower). Over time, meanders can become more pronounced and even cut off from the main river, forming oxbow lakes.

2. Canyons and Gorges: These are deep, steep-sided valleys carved by the erosive power of the river. Canyons typically form in areas where the river cuts through hard rock, while gorges often form in softer rock, like sandstone.

3. River Bluffs: These are steep slopes that mark the edge of the river valley. They are formed by the river's erosion of the surrounding land over long periods. River bluffs can be found on both sides of the river.

4. Terraces: These are flat, elevated areas that run parallel to the river. They form as the river erodes downward, leaving behind remnants of the old floodplain at a higher elevation.

5. Potholes: These are circular depressions in the riverbed, often found in areas where the river flows over hard bedrock. They are created by the abrasive action of rocks and gravel being carried by the water.