Effects of Sea Level Fluctuations on Groundwater Quality along the Kenyan Coast.
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Date
1991
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The effects of sea level fluctuations on groundwater quality along the Kenyan coast have been studied with particular reference to the south coast. The study area lies between Mombasa Island to the north and Kenya-Tanzania border to the south. The western extent of the area from the Indian Ocean is marked by the area underlain by Maji-ya-Chumvi Beds. It is bounded by latitudes 4~’00' and 4~’45' south and longitudes 39~’00' and 39~’45 east. The area has experienced a number of sea level fluctuations between Triassic and Quaternary Periods. The fluctuations have occasioned deposition of various sedimentary rocks which have significant influence on groundwater quality. The results of data analysis of water samples from boreholes, wells and springs in the study area have indicated that unconsolidated sands have the best water quality and the shales have the poorest water quality. Water of intermediate quality is tapped in sandstones and limestones. Detailed investigations on the least understood aspects have been recommended. These include sea water intrusion into groundwater, mode of occurrence of springs at low tide along the beach, fresh water in sand dunes along the coast line and the potential of Lagoonal Sands as a source of water supply along the coast.Pages
21pp.Conference Name
Causes and Consequences of Sea Level Changes on the Western Indian Ocean and Island.Conference Location
Mombasa, KenyaConference Date
24-28 June 1991Collections