Table 2: Descriptive statistics for the Awash River Basin.

BasinStationMean annual precipitation
(mm)
Max annual (1970–2005) precipitation
(mm)
Standard deviation
(mm)

Upper Awash BasinBantu Liben 91 647 111
Tullo Bullo 94 575 114
Ginchi 97 376 90
Sebeta 111 1566 172
Ejersalele 67 355 75
Ziquala 100 583 110
Debre Zeit7338281

Middle Awash BasinKoka 97 376 90
Modjo 76 542 92
Nazereth 73 470 85
Wolenchiti 76 836 95
Gelemsso 77 448 75
Hirna 78 459 86
Dire Dawa 51 267 54
Meisso6136161

Lower Awash BasinDubti 15 192 23
Eliwuha 44 374 57
Mersa 87 449 89
Mille 26 268 40
Bati7335780