Soil Loss Assessment Using the Revised Universal Soil Loss Equation (RUSLE) Model

Table 1

The R factor algorithms.

Equation	Area of application	Researcher(s)	Serial number
R = 0.55MAR − 24.7	Ethiopia and Egypt	Hurni [88]	2
	Ethiopia	Hurni [88]	3
R = 79 + 0.363MAR; R = 50 + 0.389 MSR	Entire India	Singh et al. [89]	4; 5
R = 0.1059abc + 52	Entire India	Singh and Phadke [90]	6
R = 22.8 + 0.6400MAR	Dehradun, India	Babu et al. [91]	7
R = 0.5MAR	Ivory Coast and Burkina Faso	Roose [92]; Morgan [93]	8
	Northern Jordan	Eltaif et al. [94]	9
R = 117.6 (1.00105^MAR) for <2000 mm	Kenya	Kassam et al. [95]	10
R = 0.38 + 0.35MAR	Thailand	Harper [96]	11
	Indonesia	Bols [97]	12

MAR, MSR, and P refer to mean annual rainfall (mm), mean seasonal rainfall (mm), and annual rainfall (mm), respectively. a is the average annual rainfall (mm), b is the maximum 24-hour rainfall (mm), and c is the maximum 1-hour rainfall whose recurrence interval is 2 years.