Urban river pollution causes serious problems to the environment, sedimentation of shore, human health, and water scarcity. This study compared the sediments at the weir level of rivers in the city of Bukavu, Lake Kivu basin in the Democratic Republic of Congo between 2003 and 2021. To do this, Google earth images from 2003 and 2021 were used and data was processed by the cartographic software ArcGIS 10.7.1. The rivers are at the base of the displacements of the sediments in Lake Kivu and in 2021 on these sediments of Lake Kivu are built homes anarchically. The invasion of the shore of the lake is not only the work of the rivers, in certain places the population of Bukavu brings piles of earth which it pours into the lake and thereafter it erects houses on these lands which it considers to be parcels. The authorities must protect this heritage which also contains a large quantity of methane gas which constitutes not only a threat but also and above all an opportunity for wealth for the country.
Cite this paper
Mweze, P. R. , Chako, I. C. , Mukungilwa, L. M. , Thokozani, B. S. , Rubabura, J. K. , Makanzu, F. I. and Muhigwa, J. B. (2022). Threat Assessment of Lake Ecosystems: A Review of Sediment-Contaminant Dynamics Lake Kivu. Open Access Library Journal, 9, e9191. doi: http://dx.doi.org/10.4236/oalib.1109191.
Sterner, R.W., Keeler, B., Polasky, S., Poudel, R., Rhude, K. and Rogers, M. (2020). Ecosystem Services of Earth’s Largest Freshwater Lakes. Ecosystem Services, 41, Article ID: 101046. https://doi.org/10.1016/j.ecoser.2019.101046
Jenny, J.-P., Anneville, O., Arnaud, F., Baulaz, Y., Bouffard, D., Domaizon, I., Bocaniov, S.A., Chèvre, N., Dittrich, M., Dorioz, J.-M., Dunlop, E.S. ,Dur, G., Guillard, J., Guinaldo, T., Jacquet, S., Jamoneau, A., Jawed, Z., Jeppesen, E., Krantzberg, G. and Lenters, J. (2020) Scientists’ Warning to Humanity: Rapid Degradation of the World’s Large Lakes. Journal of Great Lakes Research, 46, 686-702.
https://doi.org/10.1016/j.jglr.2020.05.006
Jia, B., Tang, Y., Tian, L., Franz, L., Alewell, C. and Huang, J.H. (2015) Impact of Fish Farming on Phosphorus in Reservoir Sediments. Scientific Reports, 5, Article No. 16617. https://doi.org/10.1038/srep16617
Zirirane, D., Bagalwa, J.J., Isumbisho, M., Mulengezi, M., Mukumba, I., Bora, M., Mucheso, J.M., Lukamba, A., Iragi, G., Irenge, B., Kibangu, F. and Kamangala, R. (2014) évaluation comparée de la pollution des rivières Kahuwa et Mpungwe par l’utilisation des macroinvertébrés benthiques. VertigOla revue électronique en sciences de l’environnement, 14, Article No. 15365. https://doi.org/10.4000/vertigo.15365
Bagalwa, M., Majaliwa, J.G.M., Kansiime, F., Bashwira, S., Tenywa, M. and Karume, K. (2015) Sediment and Nutrient Loads into River Lwiro, in the Lake Kivu Basin, Democratic Republic of Congo. International Journal of Biological and Chemical Sciences, 9, 1678-1690. https://doi.org/10.4314/ijbcs.v9i3.46
Pasche, N., Dinkel, C., Müller, B., Schmid, M., Wüest, A. and Wehrli, B. (2009) Physical and Biogeochemical Limits to Internal Nutrient Loading of Meromictic Lake Kivu. Limnology and Oceanography, 54, 1863-1873.
https://doi.org/10.4319/lo.2009.54.6.1863
de Morais, C.P., Tadini, A.M., Bento, L.R., Oursel, B., Guimaraes, F.E.G., Martin-Neto, L., Mounier, S. and Milori, D.M.B.P. (2021) Assessing Extracted Organic Matter Quality from River Sediments by Elemental and Molecular Characterization: Application to the Tietê and Piracicaba Rivers São. Applied Geochemistry, 131, Article ID: 105049. https://doi.org/10.1016/j.apgeochem.2021.105049
Birembano, B.R. (2012). Inondations et sédimentation dans les basses terres du littoral du lac Kivu à Bukavu: Cas du bassin versant de la Tshula, Mémoire de DEA, UPN Kinshasa.
Hirslund, F. (2012). An Additional Challenge of Lake Kivu in Central Africa—Upward Movement of the Chemoclines. Journal of Limnology, 71, Article No. e4.
https://doi.org/10.4081/jlimnol.2012.e4
Kulimushi, M.S., Mugaruka, B.T., Muhindo, S.W., Michellier, C. and Dewitte, O. (2017) Glissements de terrain et éléments à risque dans le bassin versant de la Wesha (Bukavu, RD Congo). Landslides and Elements at Risk in the Wesha Watershed (Bukavu, DR Congo). Geo-Eco-Trop, 41, 233-248.
Tramblay, Y., Saint-Hilaire, A., Ouarda, T.B.M.J., Moatar, F. and Hecht, B. (2010) Estimation of Local Extreme Suspended Sediment Concentrations in California Rivers. The Science of the Total Environment, 408, 4221-4229.
https://doi.org/10.1016/j.scitotenv.2010.05.001
Sadiki, A., Bouhlassa, S., Auajjar, J., Faleh, A. and Macaire, J.J. (2004) Utilisation d’un SIG pour l’évaluation et la cartographie des risques d’érosion par l’équation universelle des pertes en sol dans le Rif oriental (Maroc): Cas du bassin versant de l’oued Boussouab. Bulletin de l’Institut Scientifique, Rabat, section Sciences de la Terre, No. 26, 69-79.
Lubis, K.S., Harahap, E.M., Rauf, A. and Hasibuan, Z.A. (2015) Dynamic Model of Suspended Sediment Concentration, River Discharge and Rainfall Intensity at Padang Watershed North Sumatra, Indonesia. International Journal of Scientific & Technology Research, 4, 68-73.
Vachon, N. (2003) L’envasement des cours d’eau: Processus, causes et effets sur les écosystèmes avec une attention particulière aux Catostomidés dont le chevalier cuivré (Moxostoma hubbsi). Société de la faune et des parcs du Québec, Direction de l’aménagement de la faune de Montréal, de Laval et de la Montérégie, Longueuil, Rapport technique 16-13, vi 49 p.
Bisimwa, M.A., Mwanuzi, F. and Nobert, J. (2014) Water Quality Management in Lake Kivu Basin, DR Congo: Estimation of Nutrient and Sediment Loading into Lake Kivu from Bukavu Sub-basin. Lambert Academic Publishing, Germany, 128 p.
Lina, A.A., Buregea, H., Mindele, U., Bouezmarni, M. and Vasel, J.-L. (2015) Parasitological Loads of Rivers Crossing the City of Bukavu, Democratic Republic of Congo. International Journal of Innovation Science and Research, 19, 412-422
Samir, C., Ahobangeze, N. (1981). Evolution et structure de la population de Bukavu. Cahiers d’Outre-Mer, 34, 43-56. https://doi.org/10.3406/caoum.1981.2969
Majoro, F., Wali, U., Munyaneza, O., Naramabuye, F., Bugenimana, E. and Mukamwambali, C. (2020) Sediment Transport and Its Impacts on Lake Kivu, Gihira Water Treatment Plant and Various Hydropower Plants along Sebeya River in Rwanda. Journal of Water Resource and Protection, 12, 934-950.
https://doi.org/10.4236/jwarp.2020.1211055
Muvundja, A.F., Pasche, N., Bugenyi, W.B.F., Isumbisho, M., Müller, B., Namugize, J.P., Rinta, P., Schmid, M., Stierli, R. and Wüest, A. (2009) Balancing Nutrient Inputs to Lake Kivu. Journal of Great Lakes Research, 35, 406-418.
https://doi.org/10.1016/j.jglr.2009.06.002
Zou, L., Xia, J. and She, D. (2018) Analysis of Impacts of Climate Change and Human Activities on Hydrological Drought: A Case Study in the Wei River Basin, China. Water Resources Management, 32, 1421-1438.
https://doi.org/10.1007/s11269-017-1877-1
Lu, W., Wu, J., Li, Z., Cui, N. and Cheng, S. (2019) Water Quality Assessment of an Urban River Receiving Tail Water Using the Single-Factor Index and Principal Component Analysis. Water Supply, 19, 603-609. https://doi.org/10.2166/ws.2018.107
WWAP (United Nations World Water Assessment Programme) (2017) The United Nations World Water Development Report 2017. Wastewater: The Untapped Resource. United Nations Educational, Scientific and Cultural Organization, Paris, 174 p.
Ololade, O.O., Mavimbela, S., Oke, S.A. and Makhadi, R. (2019) Impact of Leachate from Northern Landfill Site in Bloemfontein on Water and Soil Quality: Implications for Water and Food Security. Sustainability, 11, Article No. 4238.
https://doi.org/10.3390/su11154238
Naveen, B.P., Sumalatha, J. and Malik, R.K. (2018) A Study on Contamination of Ground and Surface Water Bodies by Leachate Leakage from a Landfill in Bangalore, India. International Journal of Geo-Engineering, 9, Article No. 27.
https://doi.org/10.1186/s40703-018-0095-x
Syvitski, J.P., Smarty, J.V., Kettner, J.A. and Pamela, G. (2005) Impact of Humans on the Flux of Terrestrial Sediment to the Global Coastal Ocean. Science, 308, 376-380. https://doi.org/10.1126/science.1109454