Exam 15: River Systems

When a dam and reservoir are constructed,the natural response of the river and its channel gradient come under the control of which of the following?

Which is the sediment load consisting of fine-grained clastic particles held aloft in the stream?

Describe the formation of deltas.

Which of the following is used to measure streamflow?

Which best describes the particles in the suspended load of a stream?

Stream velocity is often measured for different subsections of a stream cross section using a moveable current meter.

Which is the primary cause of terrace formation?

Which of the following is likely to occur if the gradient of a stream increases? (Assume that the discharge and sediment load remain unchanged.)

Which is defined as a basin in which water leaves via evapotranspiration or subsurface gravitational flow instead of reaching the ocean?

Why does entrenchment of a channel occur?

Stream piracy refers to which of the following?

The portion of each meandering curve subject to the slowest water velocity undergoes aggradation.This results in which of the following?

The meaning of the terms "river" and "stream" sometimes overlap although,in general,the term "river" is reserved for channels of water larger than a stream.

A 10-year flood has an annual exceedance probability of 10%.

An oxbow lake is a former meander that has become isolated from the rest of the river.

Which is the area of land from which all water drains into the same place?

Which is the drainage pattern that results when streams flow off a central peak or dome?

Which streams have some groundwater input,but only flow for certain periods during a year.

The sediment load consisting of coarse material too large to remain in suspension,moving along the channel bottom via traction and saltation is which load?

The higher the sinuosity,the straighter the stream channel.