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Q: The ration of the total length of streams of all orders within a basin to its area is called _____
  • A. drainage density
  • B. stream density
  • C. catchment density
  • D. stream order
Correct Answer: Option A - Drainage density–It is defined as the ratio of the total stream length of all orders within a basin to the area of the basin. The drainage density of the study area varies between 2.82 and 7.64 km/km2. The study area is divided into three classes– High drainage density - > 4 km/km². Moderate drainage density - 2-4 km/km². Low drainage density - < 2 km/km².
A. Drainage density–It is defined as the ratio of the total stream length of all orders within a basin to the area of the basin. The drainage density of the study area varies between 2.82 and 7.64 km/km2. The study area is divided into three classes– High drainage density - > 4 km/km². Moderate drainage density - 2-4 km/km². Low drainage density - < 2 km/km².

Explanations:

Drainage density–It is defined as the ratio of the total stream length of all orders within a basin to the area of the basin. The drainage density of the study area varies between 2.82 and 7.64 km/km2. The study area is divided into three classes– High drainage density - > 4 km/km². Moderate drainage density - 2-4 km/km². Low drainage density - < 2 km/km².