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.


Siyoi - Muruny Dam

















The proposed Muruny Dam is located near Kapsait Primary School at Murkokoi Center which is approximately 43km from Kapenguria Town. The site location is covered on SK Map 75/4 Cherangany at GPS coordinates 36 N 0761064 and UTM 0129350, elevation 2690 masl at the riverbed. The project area lies within the Rift Valley Drainage Basin. River Muruny emanates from Cherangany Hills and flows in a North Eastern direction before finally draining into Lake Turkana.


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

Launch of National Dam Taskforce Report

The National Task force handed over a report to Cabinet Secretary, Ministry of Water & Sanitation and Irrigation Mr.Simon Chelugui on 15th of August 2019, at the NWHSA's auditorium. The report unveiled its findings and recommendations on how dam construction, operation and maintenance are and should be regulated in Kenya to ensure safety. The document also included an implementation plan that the Ministry assured would embark on. In addition, the annual report on Non-Revenue Water Management was launched.

Cabinet Secretary,  Mr. Simon K. Chelugui  constituted this National Task force on the 18th of June 2018 to undertake inquiry, investigation and assessment of operations, regulating regimes, safety and general status of dams in the country and propose recommendations to enhance sustainable management of dams in the country.

Chair of the Task force, Eng. S.A.O Alima was in attendance together with Eng. Thuita Mwangi-CEO Athi Water Works Development Agency, Water Services Regulatory Board, National Water Harvesting and Storage Authority Chairman & Board Directors and members of the National Task force.



Welcome to NWHSA

Sanitation conference 2019

Sanitation conference 2019

The Ministry of Water & Sanitation and Irrigation hosted the first Sanitation Conference from 28th to 31st October 2019 at the Kenyatta International Conven...

Performance Contract Targets 2019/2020

Performance Contract Targets 2019/2020

NWHSA was vetted on the Performance Contract targets For the Financial Year 2019/2020 at Kenya School of Government (KSG) Embu by the Public Service Performance...

Banita/Testai Water Pan

Banita/Testai Water Pan

 Ground Breaking of Banita/Testai Water Pan Testai pan is situated in Nakuru County, Rongai Sub-County, Banita Location, and Kokwomoi Sub-Location at Testai Vil...

Moses Gitonga Ntiritu Works