Assessment of Rainfall Intensity Equations Enlisted in the Egyptian Code for Designing Potable Water and Sewage Networks

Table 2

Frequency analysis results for daily precipitation () (mm).

Station name	Selected frequency distribution	Daily precipitation at various return periods (mm)
		2 yr	3 yr	5 yr	10 yr	20 yr
Alexandria	3-parameter lognormal	26.20	33.60	42.80	55.60	69.00
Salloum	Gamma	18.90	27.30	36.60	49.00	61.00
Port Said	Gamma	14.3	20.6	27.5	36.7	45.60
Siwa	Gamma	3.69	6.24	9.24	13.60	17.90
Minia	Gamma	1.32	2.46	3.85	5.94	8.10
Assiut	Gamma	0.622	2.7	6.55	14.7	24.7
Sohag	Gamma	0.21	0.90	2.20	4.97	8.41
Luxor	Gamma	0.15	0.62	1.64	4.05	7.20
Marsa Matrouh	Gamma	24.70	33.20	42.20	53.80	64.80
Cairo	Gamma	7.36	10.90	14.80	20.10	26.90
Hurghada	Gamma	0.81	2.88	6.26	12.70	20.30
Ras Binas	Gamma	1.82	6.22	13.30	26.50	42.00
Frafra	Gamma	0.25	0.97	2.18	4.55	7.38
Beni Suef	Gamma	2.16	3.26	4.50	6.19	7.85
Aswan	Gamma	0.09	0.42	1.06	2.47	4.24
Suez	Gamma	4.69	8.59	13.40	20.50	27.80
Ismailia	Gamma	8.51	12.30	16.40	21.90	27.20
Kusseir	Gamma	1.47	3.33	5.82	9.86	14.20
Dakhla	Pearson type III	0	0.0794	0.39	1.1	2.01