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

Table 2

Conveyances efficiencies.

Furrow name	Canal section	Discharge extracted (L/s)		Distance (m)	Discharge loss (L/s)	Discharge loss L/s/m	Loss %	Efficiency % (Ec)
		H/section	E/section
Shamima	Section 1	189	105	1902	84	0.044	44.4	55.6
	Section 2	83	53	891	29	0.033	35.5	64.5
Star	Section 1	70	41	1183	29	0.025	41.4	58.6
Mbukita	Section 1	72	53	716	19	0.027	26.4	73.6
Orbuso	Section 1	209	152	3648	57	0.016	27.3	72.7
	Section 2	100.5	98	273	3	0.011	2.5	97.5
TPL	Section 1	153.3	136.1	2251	17	0.008	11.2	88.8
Mapama	Section 1	429	162	3924	267	0.068	62.3	37.7
Kammama	Section 1	223	209	864	13	0.015	6	94
	Section 2	196	161	202	34	0.168	17.5	82.5
	Section 3	81	74	454	7	0.015	8.5	91.5
	Section 4	71	58	1148	13	0.011	18.8	81.2
Valestika	Section 1	152	87	2270	65	0.029	42.8	57.2
	Section 2	48	30	873	18	0.021	37.5	62.5
Kipilipili	Section 1	447	297	2228	150	0.067	33.5	66.5
	Section 2	132	125	262	7	0.027	5	95
	Section 3	54	43.3	1109	11	0.010	20.4	79.6
Kwa Ugoro	Section 1	448	82.5	3128	365	0.117	81.6	18.4
	Section 2	46	26	1781	20	0.011	43.1	56.9
Dolly/BCW	Section 1	257	221.7	1357	35	0.026	13.6	86.4
	Section 2	132	123	898	9	0.010	7.1	92.9
	Section 3	81	27	2546	54	0.021	66.8	33.2
Kaanani	Section 1	198	120.9	1457	77	0.053	38.8	61.2
	Section 2	99	19.7	830	79	0.095	80.1	19.9
Kitamaka	Section 1	41	39	20	2	0.100	4.9	95.1
Elia	Section 1	22	8	672	15	0.022	65.4	34.6
Mkindi	Section 1	37	33.9	345	3	0.009	9.1	90.9
Ngolo	Section 1	143	100	1215	43	0.035	30.1	69.9
Humalu	Section 1	48	40	504.5	8	0.016	16.7	83.3
	Section 2	32	24	69	8	0.116	25	75
Mimako	Section 1	94	90	634	4	0.006	4.4	95.6
	Section 2	58	48	931	10	0.011	17.5	82.5
	Section 3	42	35	463	7	0.015	16.7	83.3
Furrow no. 1	Section 1	440	415	1452	25	0.017	5.7	94.3
	Section 2	335	330	975	5	0.005	1.4	98.6
	Section 3	310	271	1321	39	0.030	12.5	87.5
	Section 4	82	45	531	37	0.070	45.1	54.9
Makiba	Section 1	373	221	846	152	0.180	40.8	59.2
Total					Averages	0.041	28.1	71.9