Channel Morphology

Options:

1. Development of pools and riffles
2. Development of ideal meander belts
3. Lateral oscillation of channels with sinuosity approaching 1.1
4. None of the above

Correct Answer

Options:

1. Hydraulic principles
2. Topographical principles
3. Geographical principles
4. Unknown

Correct Answer

Options:

1. Average channel width, radius of meander curvature, and dominant discharge
2. Only radius of meander curvature
3. Only dominant discharge
4. Only average channel width

Correct Answer

Options:

1. They are an accident caused by special conditions
2. They are particularly common in areas where sand and gravel compose the dominant load
3. They do not follow a spiral course like a screw thread
4. They are normal and stable patterns related to river flow

Correct Answer

Options:

1. BI/2(sum of the length of islands or bars)
2. (Sum of the length of islands or bars)/length of the reach
3. BI/ (sum of the length of islands or bars)
4. (Sum of the length of islands or bars)/ (length of the reach)/2

Correct Answer

Options:

1. Stable bars and islands
2. Less total channel width of divided channels than the width of a single channel above the point of division
3. Low width/depth ratio
4. Non-erodible bank

Correct Answer

Options:

1. Low sediment transport and channel scour
2. Shallow channel depth
3. High channel resistance to flow to move the bedload
4. All of the above

Correct Answer

Options:

1. Straight channel pattern
2. Meandering channel pattern
3. Braided channel pattern
4. Anastomosing channel pattern

Correct Answer

Options:

1. Lack of competence
2. Lack of capacity
3. High suspended loads
4. Seasonal variation in stream discharge

Correct Answer

Options:

1. It is a special type of straight channel pattern
2. It is a special type of meandering channel pattern
3. It is a special type of braided pattern
4. It is a special type of anabranching pattern

Correct Answer

Options:

1. Many channels that are stable and retain their identities
2. Multiple secondary-circulation cells and bars form
3. Mid-channel bars or islands bifurcate the channel
4. The channels frequently shift their positions

Correct Answer