Hydrological Modeling of the Jiaoyi Watershed (China) Using HSPF Model

Table 6

Statistics of annual water balance components for agricultural land in Jiaoyi watershed (units: inches).

		Year
		2001	2002	2003	2004	2005	2006	2007	Mean
Rainfall		26.99	22.38	39.75	37.13	42.19	26.06	38.0	33.21
Runoff	Surface flow	0.081	0.005	0.085	0.565	0.806	0.202	0.624	0.338
	Interflow	3.01	0.258	5.546	6.024	9.114	3.794	7.918	5.095
	Base flow	1.341	0.36	3.529	2.881	4.079	1.829	3.249	2.467
	Total	4.432	0.623	9.16	9.47	14.0	5.825	11.79	7.9
Deep groundwater		1.034	0.65	2.042	1.623	2.041	1.019	1.692	1.443
Evaporation	Potential	35.15	36.6	30.4	34.84	34.3	34.31	33.89	34.21
	Interception	4.193	3.371	5.37	5.02	4.626	2.927	3.844	4.193
	Upper zone	8.652	8.488	11.22	13.13	12.97	10.84	12.1	11.06
	Lower zone	6.53	8.208	5.261	6.432	5.486	6.951	3.783	6.093
	Ground water	1.035	1.514	0.968	1.272	0.894	1.12	0.418	1.032
	Base flow	0.821	0.344	1.205	1.364	1.335	0.969	1.407	1.064
	Total	21.23	21.93	24.02	27.22	25.31	22.81	21.55	23.44