A sluggish river is characterized by slow-moving water, often resulting in a calm and gentle flow. This type of river typically has a low gradient, meaning it does not drop steeply in elevation. As a result, the water may appear still or lazy, making it easier for sediment to settle at the bottom. Sluggish rivers can support diverse ecosystems, providing habitats for various plants and animals. They often have rich vegetation along their banks, which can include wetlands and marshes. These environments are crucial for maintaining water quality and supporting wildlife, including fish and birds.