Identification of potential groundwater recharge zones at Makutupora basin, Dodoma Tanzania

Figures & data

Figure 1. Makutupora location map.

Figure 2. Layout of data process and analysis.

Figure 3. Relationship between factors affecting groundwater recharge.

Table 1. Weighted thematic layers and ranks.

SN	Thematic Layer	Category	Rank	Weight (% of influence)
1	Slope	very low	5	7
		low	4
		moderate	3
		high	2
		very high	1
2	Lineament Density	very low	1	34
		low	2
		moderate	3
		high	4
		very high	5
3	Rainfall	very low	1	16
		low	2
		moderate	3
		high	4
		very high	5
4	Soil	haplic Phaeozems	1	11
		eutric Leptosols	2
		eutric-Pellic Vertisols	3
		chromi-Ferric Acrisols	4
5	Drainage Density	very low	5	24
		low	4
		moderate	3
		high	2
		very high	1
6	Land use/land cover	shrubs/ vegetation	4	5
		grassland	3
		bareland	2
		swamps	1
		built up	1
7	Geology	tonalite	5	3
		synorogenic granite	7
		swamps with mbuga	8
		quatzo feldspathic gneiss	6
		quartzo feldspathic schist	6
		quartzite	3
		granular metasediments	2
		granodiorite	4
		alluvium and red soil	9

Figure 4. Lineament map.

Figure 5. Lineament density map.

Figure 6. Drainage network map.

Figure 7. Drainage density map.

Figure 8. Slope map.

Figure 9. Geological map.

Figure 10. Land cover map.

Figure 11. Rainfall map.

Figure 12. Soil map.

Figure 13. Potential groundwater zone map.

Table 2. Coverage of groundwater recharge potential zones.

Potentiality	Area (km^2)	Percentage
Very poor	13	1.63%
poor	351	45.49%
average	308	39.90%
good	85	10.98%
Very good	18	2.01%
sum	774	100%

Figure 14. Potential groundwater zone map with existing 26 production boreholes and 6 observation boreholes.