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N'djili topographic map
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N'djili
The river catchment has sandy soils and steep topography, as with other rivers that supply the city. With clearing of the forests, there has been growing soil erosion, leading to sediment pollution. When turbidity levels rise above the 1,000 NTU limit, which has often been reported in the Ndjili and Lukaya rivers during the rainy season, water purification plants have to stop their operations. Imported chemical coagulants and imported lime are needed to keep the plants in operation. On a positive note, after a four-year 51 million euro project financed by the World Bank, in 2009 the Ndjili plant doubled its capacity to 330,000 cubic metres (12,000,000 cu ft) daily, providing nearly 65% of Kinshasa's water supply.
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About this map
Name: N'djili topographic map, elevation, terrain.
Location: N'djili, Kinshasa, Democratic Republic of the Congo (-4.66849 15.34958 -4.31032 15.42665)
Average elevation: 362 m
Minimum elevation: 249 m
Maximum elevation: 690 m
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