National Water Harvesting and Storage Authority

Hifadhi Maji, Boresha Maisha

Isiolo Dam

ISIOLO PROJECT BRIEF

THE LOCATION AND OBJECTIVE OF THE DAM

 

 

 

 

 

 

 

 

 

 

 

 

The proposed dam is located at Crocodile Jaws site approximately 18km from Oldonyiro shopping centre and on the border of Isiolo and Laikipia counties. The proposed dam is intended to regulate the flows of the Ewaso Nyiro River, supply water to Isiolo town, the proposed Isiolo resort city and rural areas of Isiolo, Laikipia and Samburu counties. The project will also generate 16MW of hydropower.

The project will serve a population of about 220,726 people in the initial year 2020, 343,560 people in the future year 2030 and 564,819 in the ultimate year 2040. The projected water demand is 7,894m3/day for the initial year 2020, 18,957m3/day in the future year 2030 and 60,000m3/day in the ultimate year 2040.

PROJECT PARTICULARS

The table below shows the project particulars of the proposed dam:

S/no

Detail Description

Explanation

1

Inundated/Flood area (Ha)

2,083

2

Dam height (m)

83

3

Storage volume (m3*106)

214.3

4

Catchment area (km2)

8,583

5

Fetch/throw back (km)

14.3

6

Crest length (m)

1,075

7

Water treatment plant

60,000m3/day

8

Diameter of raw water transmission line

1,000mm

9

Length of raw water main

500m

10

Treated water mains

800mm-400mm

11

Storage tanks

15,000m3, 4,000m3 and 2,500m3

13

Hydropower potential (MW)

16

 

PROGRESS OF THE PROJECT

-Design of the project is complete

-Pre-qualification for finance and build contractors has been done

-Consultation of stakeholders on going

-The process to seek NEMAs approval and licence has begun

Moses Gitonga Ntiritu Works