CONSTRUCTION OF NORTHERN COLLECTOR TUNNEL PHASE 1

Project Detail Report

Overview

StatusOngoing
TypeFlood Flow Diversion Tunnel
AgencyAthi Water Works Development Agency
Program4th Nairobi Bulk Water Supply Programme
Progress1.00%

Location Information

CountyKajiado
ConstituencyKajiado East
WardKitengela
SettingUrban
Coordinates-1.842100, 36.791900

Timeline & Impact

Start DateN/A
Planned End DateN/A
Actual End DateN/A
ContractorChina Gezhouba Group Company Limited
ConsultantSMEC Consulting Engineers of Australia
Target AreasKitengela
Scope of WorksThe scheme, under Phase 1, is to divert raw water from Maragua, Gikigie and Irati Rivers by means of weir control intakes and convey the intercepted raw water through an 11.8km long tunnel with 3.2m diameter to Thika Dam Reservoir. The total design intercepted flow is 6.0 m³/s. The proposed major elements of the project Construction of 11.712km main tunnel Construction of 904m Adits, Construction of 2 no. Shafts, each 50m deep, Construction of 3 no. intake weirs at Maragua, Gikigie and Irati, Construction of Githika outfall structure, Portal/tunnel entrance works at Maragua, Gikigie, Kaanja and Irati
ImpactsImprove water supply to 1.2m,to promote socio-economic to the people
ChallengesThere are pending RAP payments due to budget constraints
RemarksThe project is complete and operation. Project activates downstream household connections

Project Cost

Total Contract Sum (GoK + Foreign)KES 259,877,704.00
GoK Contract SumKES 41,580,433.00
Foreign Contract SumKES 218,297,271.00
Cumulative ExpenditureKES 259,877,704.00
Outstanding CostKES 0.00

Funding Sources

SourceTypeAmount (KES)
Gok Grant 41,580,433.00
Wb Loan 218,297,271.00

Beneficiaries

Target Households32,372
Target Population161,862