🔍 Key Concepts

• River morphology and how sandbars or gravel bars form along the outside or inside of bends • The meaning of the word bluff in river navigation (high, steep bank) • How a bar’s orientation to the current affects set, drift, and depth changes

💭 Think About

• First, picture what a bluff looks like on a riverbank. How would current flowing past a steep outside bank shape a bar near it? • Compare each answer choice with how you would expect current to deposit or scour material along a steep bank. Which description best matches a natural extension of that bank? • Ask yourself: would a bar near a steep bank more likely lie along the flow, across it, or sharply dropping into deep water?

✅ Before You Answer

• Make sure you know that a bluff is a high, steep bank, not a shallow or flat shoreline • Visualize whether a bar associated with a bluff would typically run out from the bank along the river or lie straight across the current • Check if any option describes something that is unlikely in normal river sediment deposition, and rule those out first