Dynamics of Hydrology on the Physico-Chemical Water Quality Parameters and Trophic State of Lake Baringo, Kenya

K. Nyakeya, K.G. Kiptoo Kipkorir, J.M., Nyamora, C.O. Odoli, E. Cheptoo Kerich


Lake Baringo is a freshwater lake situated in the Kenyan Great Rift Valley, characterized by a polymictic regime with southern inlets but without any visible outlet. How the inflowing rivers and the rise in lake water levels affect water quality is still unclear. In this study, samples were collected from May 2014 to June 2015 at sites S2, C1, C2, C3 and N2: S denoted southern part, C central region and N northern part; and analysed for a wide range of physical and chemical parameters and the trophic state of the lake also determined. During 2017, samples were collected from nine stations at sites designated inlet (S1, S2 and S3), Lake Centre (C1, C2 and C3) and offshore (N1, N2 and N3). Spatial differences were determined by Analysis of Variance (ANOVA). All the physicochemical parameters (i.e. for 2017) demonstrated significant (P <0.05) spatial variations. Equally, spatial-temporal differences were noted for one year study period of June 2014 to May 2015 (P <0.05). Data collected for one year indicated a somewhat different trend from what was witnessed on data of 2017. Stations that demonstrated high values of the measured parameters during the 2017 sampling (i.e. temperature for S2, 26.8oC) recorded reduced levels in the one year sampling (26.0oC). However, results from the 2017 study period showed variation from one station to another (p<0.05). The ecological status of the lake as measured by the water quality studies carried out in the present study has changed in comparison with the previous studies because the general trend is indicative of an improved system due to rise in water levels. The study recommends regular monitoring in order to discern the erratic changes witnessed with the changes in water levels leading to deviation of the physico-chemical water quality parameters from the past studies.


Hydrology, Human Settlement, Physic-Chemical, Trophic State, Lake Baringo

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Anon, (2003). Lakes of the Rift Valley, Project Briefing. http://www.earthwatch.org/expeditions/harper/harper_03.pdf; accessed September 15, 2013.

Anonymous (1987). Fertilizer Use Recommendation Project (Phase I), Final Report, Annex III, Volume 14, Baringo District. Ministry of Agriculture Nairobi, Kenya.

Ballot, A., Pflugmacher, S., Wiegand, C., Kotut, K. and Krienitz, L. (2003). Cyanobacterial toxins in Lake Baringo, Kenya. Limnologica-Ecology and Management of Inland Waters. 33: 2–9.

Cl’ement, J. P., Caroff, M., H’emond, C., Bollinger, J .J. C., Guillou, H. and Cotton, J. (2003). Pleistocene magmatism in a lithospheric transition area: Petrogenesis of alkalins lavas from Baringo-Bogoria basin, central Kenya Rift. Canadian Journal of Earth Science. 40: 1239–1257.

Costantini, M. L., Rossi, L., Scialanca, F., Nascetti, G., Rossi, D. and Sabetta, L. (2007). Association of riparian features and water chemistry with reed litter breakdown in a volcanic lake (Lake Vico, Italy). Aquatic Sciences. 69: 503–510.

Harper, D. M., Morrison, E. H., Macharia, M. M., Mavuti, K. M. and Upton, C. (2011a). Lake Naivasha, Kenya: ecology, society and future. Freshwater Reviews 4, 89-114.

Harper, D. M., Morrison, E. H. J., Macharia, M. M., Mavuti, K. M. and Upton, C. (2011b). Lake Naivasha, Kenya: Ecology, Society and Future. Freshwater Reviews. 4: 89–114.

Kallqvist, T. (1987). Primary production and phytoplankton in Lake Baringo and Naivasha, Kenya. Norwegian Institute for Water Research Report, Blinden, Oslo, 59 pp.

Kassilly F. N. (2002). Forage quality and camel feeding patterns in Central Baringo, Kenya. Livestock Production Science. 78: 175–182.

Kiplagat, W. K., Njuguna, S. G., Francis, M. M. and Lothar, K. (1999). The physico- chemical conditions of Turkwel Gorge reservoir, a new man-made lake in northern Kenya. Limnologia. 29: 377–392.

Kitaka, N., Harper, D. M. and Mavuti, K. M. (2002). Phosphorus inputs to Lake Naivasha, Kenya, from its catchment and the trophic state of the lake. Hydrobiologia. 488: 73–80.

Michael E. G. and Douglas E. S. (2004). Statistical Tools for Environmental Quality Measurement. Chapman & Hall/CRC. 157pp.

Ndungu, J., Augustijn, D. C. M., Hulscher, S. J. M. H., Kitaka, N. and Mathooko, J. (2013). Spatio-temporal variations in the trophic status of Lake Naivasha, Kenya. Lakes & Reservoirs: Research and Management. 18: 317–328.

Ngaira, J. K. (2006). Implications of climate change on the management of Rift Valley lakes in Kenya. The case of Lake Baringo.pp 133-138. In Odada E.O., Olago. DO, Ochola, W., Ntiba, M., Wandiga, S., Gichuki, N., Oyieke, H (eds) Proceedings (Vol. 2) of 11th World Lakes Conference, 31st October to 4th November 2005, Nairobi Kenya. 623 pp

Odada, E. O., Onyando, J. O. and Obudho, P. A. (2006). Lake Baringo: Addressing threatened biodiversity and livelihoods. Lakes and Reservoirs: Research and Management. 11: 287–299.

Odour, S. O. (2000). Diel physico-chemical dynamics, primary production and algae of Lake Baringo, Kenya. M.Sc. Thesis, 83 p. International Institute for Infrastructural, Hydraulic and Environmental Engineering (IHE), Delft.

Omondi, R., Kembenya, E., Nyamweya, C., Ouma, H., Machua, S. K. and Ogari, Z. (2014). Recent limnological changes and their implication on fisheries in Lake Baringo, Kenya. Journal of Ecology and the Natural Environment. 6: 154–163.

Omondi, R., Yasindi, A. W. and Magana, A. (2011). Spatial and temporal variations of zooplankton in relation to some environmental factors in Lake Baringo, Kenya. Egerton Journal of Science and Technology. 11: 29–50.

Onyando, J.O., Kisoyan, P. and Chemelil M.C. (2005). Estimation of potential soil erosion for River Perkerra catchment in Kenya. Water Research and Management. 19: 133–143.

Owen, R. B. Renaut, R. W., Hover, V. C., Ashley G. M. and Muasya A. M. (2004). Swamps, springs and diatoms: wetlands of the semi-arid Bogoria-Baringo Rift, Kenya. Hydrobiologia. 518: 59–78.

Sarma, S. S. S., Nandini, S. and Gulati, R. D. (2005). Life history strategies of cladocerans: comparisons of tropical and temperate taxa. Hydrobiologia. 542: 315–333.

Sidneit, M. T., Fakio, A. L. T., Maria, C. R., Francises, A. E. and Adaunto, F. (1992). Seasonal variation of some limnological factors of Lagoa do Guarana, a varzea lake of the Rio Parana State of Mato Groso do Sul. Brazilian Review of Hydrobiology. 25:269–276.

StatSoft Inc. (2001). Statistica for Windows. Tulsa. Ok: StatSoft Inc. http://www.statistica.com

Stoof-Leichsenring, K., Junginger, A., Olaka, L., Tiedemann, R., and Trauth, M. (2011). Environmental variability in Lake Naivasha, Kenya, over the last two centuries. Journal of Paleolimnology 45, 353–367.

United Nations (2007). Glossary of environment statistics, studies in methods. New York.


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