Long-Term Homogeneity and Trends of Hydroclimatic Variables in Upper Awash River Basin, Ethiopia

Table 7

Summary of monthly, seasonal, and annual rainfall (mm) of each station in the sub-basin.

Months (season)	AAB	AATA	A. Alem	Akaki	Debre Zeit	Ghinch	Hombole	Sebeta	Sendafa	Teji	Tulu Bolo	Mean RF (mm)
January	17.30	13.13	15.84	10.45	9.98	24.93	53.82	15.575	14.92	11.48	12.66	18.20
February	32.20	32.26	34.02	27.36	22.32	41.16	62.33	23.39	26.68	28.65	15.74	31.50
March	67.60	63.01	69.71	55.35	55.32	72.48	83.61	64.04	50.30	52.22	51.54	62.30
April	88.30	85.31	63.23	82.79	58.64	91.99	56.39	82.36	84.44	74.73	67.00	75.90
May	77.10	80.15	79.21	64.73	59.43	90.73	54.02	82.01	55.53	73.14	102.03	74.40
June	126.70	144.85	145.92	109.38	93.96	152.29	86.65	138.375	98.49	131.45	204.95	130.30
July	240.70	266.03	260.53	234.29	204.10	227.40	189.94	266.75	327.59	214.75	275.86	246.20
August	244.60	293.77	234.83	244.03	214.98	247.28	185.36	286.455	307.59	218.97	264.61	249.30
September	127.5	185.02	129.98	117.09	103.40	142.01	84.90	134.81	102.65	101.73	111.54	121.90
October	33.10	33.23	25.77	19.46	21.32	38.34	27.74	33.29	15.24	19.96	28.98	26.90
November	8.60	8.95	23.82	5.62	5.00	11.11	9.97	10.51	4.59	6.71	12.13	9.70
December	5.20	9.67	13.68	5.08	3.85	10.26	18.21	12.06	2.39	5.95	11.53	8.90
Kiremt (JJAS)	739.55	889.67	771.27	704.79	616.44	768.98	546.85	826.39	836.32	666.90	856.95	747.65 (71%)
Bega (ONDJ)	64.21	64.97	79.12	40.60	40.15	84.64	109.73	71.44	37.14	44.10	65.30	63.76 (6%)
Belg (FMAM)	265.28	260.73	246.16	230.24	195.71	296.36	256.35	251.80	216.95	228.74	236.30	244.06 (23%)
Annual RF totals	1069.05	1215.36	1096.54	975.63	852.30	1149.98	912.93	1149.63	1090.41	939.74	1158.56	1055.47 (100%)