National Water Harvesting and Storage Authority

Hifadhi Maji, Boresha Maisha

Siyoi Dam
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Project Updates

Chemususu Dam

The dam is located in Baringo County, Koibatek District and has a capacity of 15 million cubic meters or 15 billion litres. Chemususu Dam discharges 35,000 cubic metres or 35 million litres of water per day. It was designed to serve at least 50% of Baringo County population which includes towns and various institutions within the County.


Soin-Koru Dam

The Soin-Koru Dam Development project is proposed to be located on the Nyando River in the vicinity of Muhoroni in the Western part of Kenya. It shall be 60km from Kisumu City and 5km upstream of Muhoroni town. The Dam will be located in Kisumu and Kericho counties.


Bosto Dam

The Government of Kenya through NWCPC has prioritized development of the Bosto Dam Water Supply Project in Bomet County. This is one of the main Vision 2013 flagship projects that aim to provide potable water to all in line with constitutional provisions and the right to water and Sustainable Development Goals (SDG).

The proposed dam will be 45m high zoned rockfill dam with an impermeable clay core. The capacity of the reservoir will be 29.5Million cubic meters. Treatment works will have capacity of 80,000m3/day with appropriate water system network and storage facilities to serve an initial population of 550,000 with a coverage area of 1050KM 2.


Kiserian Dam

Kiserian dam is located along Kiserian River about 2kms from Kiserian Township and will supply water to Kiserian, Ongata Rongai and parts of Ngong’ townships. The present (2010) total population of the area is about 124,000 people with a water demand of 8,450m3   per day. The 18m high dam will store 1.22Mm3 of water and supply 15,700m3  per day of water to the townships which will meet the future (2020) water demand.


Maruba Dam

In June 2010, NWCPC finalized rehabilitation of Maruba dam by raising the height of the embankment wall and spillway by 6 m. This increased the dam’s storage capacity from 0.60 Million m3 to 2.45 Million m3.  Increase in storage volume has ensured increase in water supply to Machakos Town and its environs from 2,050 m3/day to 8,700m3/day. 



Locate Our Dams

Welcome to NWHSA

Water Sector Board Inauguration, 2019

Water Sector Board Inauguration, 2019

The Cabinet Secretary, Ministry of Water and Sanitation Mr. Simon Chelugui officiated the inauguration of Board Chairpersons and Board of Directors of National...

Who we are

Who we are

National Water Harvesting and Storage Authority (NWHSA) was established under the Water Act 2016, as an autonomous agency reporting to the Ministry of Water an...

Moses Gitonga Ntiritu Works