GIS-Hydrogeochemical Model of the Yaoundé Fractured Rock Aquifer, Cameroon: Aquifer Setting, Seasonal Variations in Groundwater-Rock Interaction and Water Quality
This study of the gneiss-fractured-rock aquifer in
Yaoundé capital of Cameroon determines: the aquifer setting-flow systems, the aquifer type, seasonal variations
in rock-water interactions, evolution of the hydrogeochemical processes,
physicochemical parameters and the suitability for domestic-agro-industrial use
of the groundwater. Physicochemical field tests were carried out on 445 wells
during four seasons for EC, pH, TDS, Temperature and static water level from
July 2016 to May 2017. 90 well samples were analyzed 45 samples per season: wet/dry. 38 borewell logs were used together with structural data to determine the aquifer setting. The field
physico-chemical and laboratory analysis data of well samples were
mounted unto various GIS software platforms: Global mapper, AqQa, Aquachem, Rockworks, Logplot7, Surfer and ArcGIS,
to get indices/parameters/figures,by use of Durov’s, Piper’s and Gibbs diagrams, Water quality index WQI, USSL ratio, Sodium Absorption
ratio SAR, Percent sodium %Na, Kelly Ratio KR, Magnesium Absorption Ratio MAR,
Total Hardness TH, Residual Sodium Carbonate RSC and Permeability Index PI that were determined. The process of groundwater ions acquisition is three-fold: by recharge through atmospheric precipitation, by ion exchange/simple dissolution between the rock-groundwater and by groundwater mixing in
its flow path. Water types are Ca-HCO3, Mg-HCO3 and Mg-Cl
while hydrogeochemical facies are Ca-Mg-HCO3 and Ca-Mg-Cl-SO4.
Most water samples are
References
[1]
Acworth, R. I. (1987). The Development of Crystalline Basement Aquifers in Tropical Environment. Quarterly Journal of Engineering Geology, 20, 265-272. https://doi.org/10.1144/GSL.QJEG.1987.020.04.02
[2]
American Public Health Association (APHA) (1995). Standard Methods for Examination of Water and Waste Water. Washington DC: American Public Health Association, American Water Works Association and Water Pollution Control Federation.
[3]
Asadi, J. J., Vuppala, P., & Reddy, M. A. (2007). Remote Sensing and GIS Techniques for Evaluation of Groundwater Quality in Municipal Corporation of Hyderabad (Zone-V), India. International Journal of Environmental Research and Public Health, 4, 45-52. https://doi.org/10.3390/ijerph2007010008
[4]
Barcelona, M. J., Gibbs, J. P., Hellfrich, J. A., & Garske, E. E. (1985). Practical Guide for Groundwater Sampling (p. 169). US Environmental Protection Agency, EPA/600/2-85/104.
[5]
Clark, L. (1985). Groundwater Abstraction from Basement Complex Areas of Africa. Quarterly Journal of Engineering Geology and Hydrogeology, 18, 25-34. https://doi.org/10.1144/GSL.QJEG.1985.018.01.05
[6]
Dewandel, B., Lachassagne, P., Maréchal, J. C., Wyns, R., & Krishnamurthy, N. S. (2006). A Generalized 3-D Geological and Hydrogeological Conceptual model of Granite Aquifers Controlled by Single or Multiphase Weathering. Journal of Hydrology, 330, 260-284. https://doi.org/10.1016/j.jhydrol.2006.03.026
[7]
Djeuda Tchapnga, H. B., Tanawa, E., Temgoua, E., Siakeu, J., & Ngo Massana, B. (1999). Flow Pattern, Recharge Mechanism and Residence Time of Groundwater in the Aquiferous Formations of the Weathered Basement: Case Study of the Anga’a Basin in Yaoundé, Cameroun (pp. 117-126). Yaoundé: University Press Yaoundé.
[8]
Doneen, L. D. (1962). The Influence of Crop and Soil on Percolating Water. In Proceedings 1961 Biennial Conference on Groundwater Recharge (pp. 156-163). Fresno, CA: Ground Water Recharge Laboratory, Southwest Branch, Soil and Water Conservation Research Division.
[9]
Doneen, L. D. (1964). Water Quality for Agriculture (p. 48). Davis, CA: University of California.
[10]
Durov, S. A. (1948). Classification of Natural Waters and Graphical Representation of Their Composition. Doklady Akademii Nauk SSSR, 59, 87-90.
[11]
Eaton, F. M. (1950). Significance of Carbonate in Irrigation Water. Soil Science, 69, 123-134. https://doi.org/10.1097/00010694-195002000-00004
[12]
Fouépé Takounjou, A. (2012). Groundwater Flow Modeling and Mass Transport Simulation in a Shallow Aquifer on Crystalline Basement: The Case of the Anga’a River Watershed, Yaoundé-Cameroon. Ph.D. Thesis, Cameroon: University of Yaoundé.
[13]
Fouepe Takounjou, A., Ndam Ngoupayou, J. R., Riotte, J., Takem, G. E., Mafany, G., Marechal, J. C., & Ekodeck, G. E. (2011). Estimation of Groundwater Recharge of Shallow Aquifer on Humid Environment in Yaoundé-Cameroon Using Hybrid Water-Fluctuation and Hydrochemistry Methods. Environmental Earth Sciences, 64, 107-118. https://doi.org/10.1007/s12665-010-0822-x
[14]
Gibbs, R. J. (1970). Mechanisms Controlling World’s Water Chemistry. Science, 170, 1088-1090. https://doi.org/10.1126/science.170.3962.1088
[15]
Giggenbach, W. F. (1988). Geothermal Solute Equilibria. Derivation of Na-K-Mg-Ca Geoindicators. Geochimica et Cosmochimica Acta, 52, 2749-2765. https://doi.org/10.1016/0016-7037(88)90143-3
[16]
Hem, J. D. (1985). Study and Interpretation of the Chemical Characteristics of Natural Water (3rd ed.). Jodhpur, Rajasthan: Scientific Publishers.
[17]
Hounslow, A. W. (1995). Water Quality Data: Analysis and Interpretation (p. 397). New York: Lewis Publishers.
[18]
ISO (2003). Standard ISO 5667 3: Water Quality—Sampling—Part 3: Guidance on the Preservation and Handling of Water Samples. Geneva: International Organization for Standardization.
[19]
ISO (2006). Standard ISO 5667 1: Water Quality—Sampling—Part 1: Guidance on the Design of Sampling Programs and Sampling Techniques. Geneva: International Organization for Standardization.
[20]
ISO (2009). Standard ISO 5667-11: Water Quality—Sampling—Part 11: Guidance on Sampling of Groundwaters. Geneva: International Organization for Standardization.
[21]
Kelley, W. P. (1940). Permissible Composition and Concentration of Irrigation Waters. Proceedings of the American Society of Civil Engineers, 66, 607-613.
[22]
Kelly, W. P. (1963). Use of Saline Irrigation Water. Soil Science, 95, 385-391. https://doi.org/10.1097/00010694-196306000-00003
[23]
Khodapanah, L., Sulaiman, W. N. A., & Khodapanah, N. (2009). Groundwater Quality Assessment for Different Purposes in Eshtehard District Tehran, Iran. European Journal of Scientific Research, 36, 543-553.
[24]
Kringel, R., Rechenburg, A., Kuitcha, D., Fouépé, A., Bellenberg, S., Kengne, I. M., & Fomo, M. A. (2016). Mass Balance of Nitrogen and Potassium in Urban Groundwater in Central Africa, Yaoundé Cameroon. Science of the Total Environment, 547, 382-395. https://doi.org/10.1016/j.scitotenv.2015.12.090
[25]
Kuitcha, D., Ndjama, J., Tita, A. M., Lienou, G., Kamgang, K. B. V., Ateba, B. H., & Ekodeck, G. E. (2010). Bacterial Contamination of Water Points of the Upper Mfoundi Watershed, Yaoundé, Cameroon. African Journal of Microbiology Research, 4, 568-574.
[26]
Langguth, H. R. (1996). Groundwater Characteristics in Bereiech Des Velberter Sattles (p. 127). North Rhine-Westphalia: Ministry of Agricultural and Land Management Research Duesseldorf.
[27]
Lloyd, J. A., & Heathcote, J. A. (1985). Natural Inorganic Hydrochemistry in Relation to Groundwater: An Introduction (p. 296). New York: Oxford University Press.
[28]
Mvondo, H., Owona, S., Ondoa, J. M., & Essono, J. (2007). Tectonic Evolution of the Yaoundé Segment of the Neoproterozoic Central African Orogenic Belt in Southern Cameroon. Canadian Journal of Earth Sciences, 44, 433-444. https://doi.org/10.1139/e06-107
[29]
Nola, M., Njine, T., Monkiedje, A., Sikati, F. V., Djuikom, E., & Tailliez, R. (1998). Bacteriological Quality of Streams and Wells in Yaoundé, Cameroun. Cahier Santé, 8, 330-336
[30]
Nyende, J., Van Tonder, G. & Vermeulen, D. (2014). Hydrochemical Characteristics of Ground and Surface Water under the Influence of Climate Variability in Pallisa District, Eastern Uganda. International Journal of Environmental Science and Toxicology Research, 2, 90-107.
[31]
Nzenti, J. P., Barbey, P., Macaudiere, J., & Soba, D. (1988). Origin and Evolution of the Late Precambrian High-Grade Yaoundé Gneisses (Cameroon). Precambrian Research, 38, 91-109. https://doi.org/10.1016/0301-9268(88)90086-1
[32]
Obiefuna, G. I., & Sheriff, A. (2011). Assessment of Shallow Ground Water Quality of PindigaGombe Area, Yola Area, NE, Nigeria for Irrigation and Domestic Purposes. Research Journal of Environmental and Earth Sciences, 3, 131-141.
[33]
Paliwal, K. V. (1972). Irrigation with Saline Water (p. 198). New Delhi: Indian Agricultural Research Institute.
[34]
Piper, A. M. (1944). A Graphic Procedure in the Geochemical Interpretation of Water Analysis. Eos, Transactions American Geophysical Union, 25, 914-928. https://doi.org/10.1029/TR025i006p00914
[35]
Pradhan, S. K., Patnaik, D., & Rout, S. P. (1998). Ground Water Quality: An Assessment around a Phosphatic Fertilizer Plant at Paradip. Indian Journal Environment Protection, 18, 769-772.
[36]
Raghunath, I. I. M. (1987). Groundwater (2nd ed., pp. 344-369). New Delhi, India: Wiley Eastern Ltd.
[37]
Richards, L. A. (1954). Diagnosis and Improvement of Saline Alkali Soils. Agriculture Handbook 60. Washington DC: US Department of Agriculture.
[38]
Rossetto, R., De Filippis, G., Borsi, I., Foglia, L., Massimiliano, C., Criollo, R., & Vázquez-Suñé, E. (2018). Integrating Free and Open Source Tools and Distributed Modelling Codes in GIS Environment for Data-Based Groundwater Management. Environmental Modelling and Software, 107, 210-230. https://doi.org/10.1016/j.envsoft.2018.06.007
[39]
Shuttle Radar Topographic Mission, SRTM (NASA, Version 4) (2018). http://srtm.csi.cgiar.org
[40]
Sisodia, R., & Moundiotiya, C. (2006). Assessment of the Water Quality Index of Wetland Kalakho Lake, Rajasthan, India. Journal of Hydro-Environment Research, 14, 1-11.
[41]
Szaboles, I., & Darab, C. (1964). The Influence of Irrigation Water of High Sodium Carbonate Content of Soils. In Proceedings of 8th International Congress on International Society of Soil Science (pp. 803-812). Hungary: Research Institute for Soil Sciences and Agricultural Chemistry of the Hungarian Academy of Sciences.
[42]
Tabue, Y. J., Feumba, R., Wethe, J., Ekodeck, G. E., & De Marsily, G. (2012). Evaluation of Groundwater Suitability for Domestic and Irrigational Purposes: A Case Study from Mingoa River Basin, Yaoundé, Cameroon. Journal of Water Resource and Protection, 4, 285-293. https://doi.org/10.4236/jwarp.2012.45031
[43]
Tanawa, E., Djeuda Tchapnga, H. B., Ngnikam, E., Temgoua, E., & Siakeu, J. (2002). Habitat and Protection of Water Resources in Suburban Areas in African Cities. Building and Environment, 37, 269-275. https://doi.org/10.1016/S0360-1323(01)00024-5
[44]
Teikeu, A. W., Njandjock, N. P., Bisso, D., Yene Atangana, Q., & Sep Nlomgan, J. P. (2012). Hydrogeophysical Parameter Estimation for Aquifer Characterization in Hard Rock Environment: A Case Study from Yaoundé, Cameroon. Journal of Water Resource and Protection, 3, 244-253.
[45]
Teikeu, A. W., Njandjock, N. P., Tabod, C. T., Akame, J. M., & Nshagali, G. B. (2016). Hydrogeological Activity of Lineaments in Yaoundé Cameroon Region Using Remote Sensing and GIS Techniques. The Egyptian Journal of Remote Sensing and Space Sciences, 19, 49-60. https://doi.org/10.1016/j.ejrs.2015.12.006
[46]
Todd, D. K. (1980). Ground Water Hydrogeology. New York: John Wiley and Sons, Inc.
[47]
United States Central Intelligence Agency (2018). World Facts Book. https://www.cia.gov
[48]
Wilcox, L. V. (1955). Classification and Use of Irrigation Waters (p. 19). Circular No. 960, Washington DC: United States Department of Agriculture.
[49]
World Health Organization, WHO (2017). Guidelines for Drinking-Water Quality: 4th Edition, Incorporating the 1st Addendum. Geneva: World Health Organization.
[50]
Wyns, R. J., M., Lachassagne, P., Baltassat, J.-M., Vairon, J., Legchenko, A., & Mathieu, F. (2004). Application of SNMR Soundings for Groundwater Reserves Mapping in Weathered Basement Rocks (Brittany France). Bulletin of the Geology Society of France, 175, 21-34. https://doi.org/10.2113/175.1.21
