Exam 15: Running Water

What characterizes turbulent flow?

In what climatic regions do alluvial fans form best?

Assuming constant discharge, stream velocity increases as

In semi-straight channeled streams, where does the highest velocity of flow occurs? Explain why this is the case.

A ___________stream cuts directly through a ridge or series of ridges instead of going around them.

What is ultimate base level for a stream?

What was the most important lesson learned from the Flood of '93 in the Midwestern United States?

Sheet flow is most likely to occur in areas with

What are the three types of marine deltas that are recognized, based on the relative importance of the processes involved in their formation?

When do streams do most of their erosion, transportation of sediment, and deposition?

If vegetation decreases in a watershed such that sediment supply to the stream is increased, which of the following changes might you expect?

By what two processes can a stream erode material from its banks and bed?

Velocity increases downstream because

Artificial levees may actually increase the possibility of flooding downstream.

What is the origin of oxbow lakes?

In meandering streams, where does the water velocity tend to be greatest?

Which of the following drainage patterns would be expected to develop in flat-lying sedimentary rocks?

How does flood control actually exacerbate problems in many flood-prone areas?

What are natural levees?

Streamflow and sediment deposition on the floodplain is