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Catchment Area Rehabilitation

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A water catchment area is a zone which collects and filters natural water (rain, dew and snow).

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WRMA Perfomance Report 2

wrma-report-2011

WRMA Director Mr. Davis Nyamu presents a copy of the Kikuyu Springs report study to Kikuyu area DCCatchment Rehabilitation Day also marked the launch of the Kikuyu Springs report study. Due to land use changes, encroachment of the Ondiri Swamp and escalating groundwater abstraction in the area, the long-term sustainability of the Kikuyu Springs as a public water supply source has been under threat.

Kikuyu Springs is a significant public water source in the northwest Nairobi area hence vital for the city’s water supply. Consequently, the Water Resources Management Authority (WRMA) commissioned a study on the Kikuyu Springs as part of the Kenya Natural Resources Management Project.

The objectives of this study were to:-

  • To define and map the area or areas which constitute the recharge zone or zones for the Kikuyu Springs aquifer, its geometry the hydro geological links between the springs and the various water bodies including, but not limited to, Ondiri Swamp, Nyakumu Swamp/Lake Nachu, the Muguga area, Ndeiya-Karai area generally and the immediate Spring area;
  • To quantify mean annual recharge to the recharge zone or zones and describe parameters that are likely to lead to variation in natural recharge
  • To describe the measures that should be put in place to protect the recharge area or areas from destructive land uses that are likely to jeopardise recharge and water quality and a tentative program;
  • To describe the measures that should be put in place to protect the recharge area or areas from destructive land uses that are likely to jeopardise recharge and water quality and a tentative program;
  • To make recommendations as to whether this aquifer unit should be given “Special Aquifer” status (with respect to the Water Resources Management Rules, 2007);
  • To define the limits of a groundwater conservation area or areas that might be gazetted in order that the recharge areas or areas are protected in future.

The Kikuyu Springs Aquifer extends over an area of 161 square kilometres, from Bathi Springs in the north to just beyond Nyakumu Swamp in the south; to the west it runs along the Thigio-Ndiuni contour above the Kikuyu Escarpment and its eastern boundary is marked by the series of faults from the Upland Fault to through the faults that can be traced all the way to Sigona.

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WRMA News Update

WRMA Conducts 3rd Catchment Area Advisory Committee Induction
The third CAAC induction workshop was held in April 20
Kikuyu Springs study report launched
Catchment Rehabilitation Day also marked the launch of
Authority launches Annual Catchment Rehabilitation Day
On March 13th 2012, WRMA launched its first ever event

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