Canyons: Steep-sided valleys formed by rapidly flowing water.

V-Valleys: Valleys with steep sides formed by rivers and streams.

U-Valleys: Valleys with a wide, flat bottom and steep sides, often formed by glaciers but can be modified by rivers.

Floodplains: Low-lying areas adjacent to rivers that are subject to flooding.

Deltas: Areas of sediment deposited at the mouth of a river, often forming a fan-shaped landform.

Estuaries: Wide, tidal inlets of the sea where freshwater from a river mixes with saltwater from the ocean.

Oxbow Lakes: Horseshoe-shaped lakes formed when a river changes course, leaving behind a section of the original channel.