- 1,068 viewsDuration: 3:08The Karimenu II dam water supply project in Gatundu North in Kiambu County, which also supplies water to parts of Nairobi County, received a watershed restoration boost from climate change and Sustainability Watch stakeholders. The watersheds, which are critical to water security in Kiambu and Nairobi, are set for a restoration initiative, with an investment of more than 200 million Kenya shillings.