Question

The ratio of the total stream length cumulated for all orders in the basin to the total area of the basin is called as:

• A. basin ratio
• B. drainage pattern
• C. drainage density
• D. texture ratio

Hint:

Drainage density = stream length ÷ basin area; higher value = denser stream network.

Answer 1

The Correct Option is C

In geoengineering and geomorphology, the concept of "drainage density" is crucial for understanding the efficiency of a drainage basin. Drainage density is defined as the ratio of the total length of all the streams and rivers in a particular drainage basin to the total area of the basin. It quantifies how dissected the basin is and provides insights into various hydrological and topographical characteristics of the region.

Mathematically, drainage density (D) can be expressed as:

D = L / A

Where:

• L is the total stream length cumulated for all orders in the basin.
• A is the total area of the basin.

Given the options, "drainage density" appropriately fits the definition provided, which involves calculating a ratio between total stream length and basin area. Other options such as "basin ratio," "drainage pattern," and "texture ratio" do not distinctly reference this specific measurement or hydrological characteristic.

Therefore, the correct answer is "drainage density".