Jawa Khola Hydropower Project is a run-of-river type scheme, located in Jumla District of Karnali Province in Nepal. The headworks area is located in Patrasi Rural Municipality while powerhouse area is located in Guthichaur Rural Municipality. The project has an installed capacity of 15.25 MW and will generate 96.78 GWh of energy annually. The gross head of the project is 152 m while design discharge of the project is 12.35 cumec. The project is located partly in the rocks of Higher Himalayan and partly in Lesser Himalayan zone with major lithology of gneiss, schist, amphibolite, quartzite and phyllite.
Jade Consult had carried out the feasibility and initial environmental examination study of the project. Department of Electricity Development is the client of this project.
The project site is located about 818 km west of Kathmandu, about 308 km north of Nepalgunj and 237 km north of Surkhet. The East West Highway provides access up to Kohalpur from the capital city, Kathmandu. From Kohalpur, Ratna Highway provides access up to Surkhet. Thereafter, the Karnali Highway provides access up to Jumla Khalanga. The project headworks site is accessible through earthen motorable road going to Dillichaur from Khalanga, Jumla. The road passes close to the proposed headworks site of the project which is about 11 km from Khalanga. About 500 m project access road is required to be constructed to reach the headworks site from the existing nearby road. Similarly, the powerhouse site requires only about 500 m road construction from existing motorable road at Dansangu.
I was involved in this project during October 2017 – April 2019 for feasibility and environmental study. I was responsible for engineering geological mapping of the project area, planning, execution and supervision of geophysical and geotechnical survey that consists of 3300 m of electrical resistivity tomography (ERT) survey and 140 m of core drilling, in situ and laboratory tests, rock mass characterization and classification, design of support for surface and underground excavations of project components and construction material survey.