Table 1 Average annual rainfall and rainfall erosivity (R) of sub-catchments of the northern catchment of Lake Tana (1997–2018)
Northern catchment of Lake Tana | Average Annual Rainfall (mm) | R (MJ mm ha−1 h−1 year−1) | |||||||
|---|---|---|---|---|---|---|---|---|---|
Sub-catchment | Area (ha) | Min | Max | Mean | SD | Min | Max | Mean | SD |
Gabi Kura | 56,341 | 618.2 | 2092.5 | 940.4 | 283.2 | 335.3 | 1146.2 | 512.7 | 156.2 |
Derma | 60,118 | 689.5 | 2105.9 | 1337.3 | 338.2 | 374.5 | 1153.5 | 731.2 | 186.2 |
Megech | 80,727 | 944.1 | 3282.9 | 1807.3 | 378.0 | 515.1 | 1850.3 | 989.7 | 208.0 |
Gumero | 54,029 | 971.4 | 3121.4 | 1610.2 | 432.9 | 529.6 | 1712.1 | 881.2 | 238.3 |
Garno | 41,016 | 1005.0 | 1261.8 | 1089.0 | 50.1 | 548.1 | 687.8 | 594.2 | 27.6 |