A watershed area of 1851 hectare has maximum distance of 7.12 km from ...
Calculation of Form Factor for a Watershed
Definition: Form factor is defined as the ratio of the area of the watershed to the square of its maximum length.
Given data:
- Watershed area = 1851 hectares
- Maximum distance = 7.12 km
Conversion of units:
- 1 hectare = 10,000 square meters
- 1 km = 1000 meters
Hence, the watershed area in square meters = 1851 x 10,000 = 18,51,000 sq. meters
Maximum distance in meters = 7.12 x 1000 = 7120 meters
Calculation of Form Factor:
- Area of the watershed = 18,51,000 sq. meters
- Square of maximum distance = (7120)^2 = 50,62,400 sq. meters
Form factor = (Area of the watershed) / (Square of maximum distance)
= 18,51,000 / 50,62,400
= 0.365
Therefore, the form factor of the watershed is 0.365.
Answer: Option (c) 0.365 is the correct answer.