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Table 4 Severity classes, area coverage, magnitude and rates of annual soil erosion

From: Environmental implications of soil erosion and sediment yield in Lake Hawassa watershed, south-central Ethiopia

Soil loss rates (t ha− 1 year− 1)

Severity classes a

Area (ha)

Percent of total

Estimated annual loss (t)

Percent of total loss

< 5

Very slight

78,178.1

54.8

80,425.5

1.5

5–15

Slight

22,328.1

15.7

189,940.6

3.6

15–30

Moderate

14,124.7

9.9

295,228.2

5.6

30–50

Severe

8,440.8

5.9

323,644.0

6.1

> 50

Very sever

19,589.3

13.7

4,385,962.7

83.1

Total

 

142,661

100.0

5,275,201.0

100.0

  1. aThis classification was made based on FAO (2006), Haregeweyn et al. (2017) and Yusuph and Dagnew (2019)