Estimating Conveyance Efficiency and Maize Productivity of Traditional Irrigation Systems in Usa River Catchment, Tanzania

Table 1

List of irrigation furrows with measured water abstraction at the intakes and water permits in Sept 2017.

S/N	Furrow name	Permit no.	Quantity permitted (L/s)	Quantity measured (L/s)	% of abstraction	River source	Status intake
1	Shamima	140236	200	189	95	Kikuletwa	With gate
2	Star	140616	68	70	103	Kikuletwa	Without gate
3	Mbukita	140237	200	151	76	Kikuletwa	Without gate
4	Orbuso	2285	200	215	108	Kikuletwa	With gate
5	TPL	3156	280.3	130	46	Kikuletwa	With gate
6	Mapama	140550	300	242	81	Kikuletwa	With gate
7	Kammama	140040	200	204	102	Kikuletwa	With gate
8	Valestika	3727	142.2	130	91	Kikuletwa	Without gate
9	Kipilipili	3151	14.16	147	1038	Kikuletwa	O/gate/repair
10	Kwa Ugoro	4761	113.28	150	132	Kikuletwa	Without gate
11	Dolly/BCW	1765	84.96	224	264	USA	With gate
12	Kaanani	1110055	200	135	68	Malala	Without gate
13	Kitamaka	140014	200	138	69	Malala	With gate
14	Elia	140046	20	69	345	Malala	Without gate
15	Mkindi	140047	100	83	83	Tengeru	with gate
16	Ngolo	14007	100	115	115	Tengeru	Without gate
17	Humalu	11101807	50	55	110	Malala	Without gate
18	Mimako	140191	85	227	267	Tengeru	With gate
19	Furrow No.1	11101545	100	453	453	USA	Without gate
20	Makiba	3143	198.24	373	188	Kikuletwa	Without gate
			2856.14	3500