 deothal chanju hep deothal chanju hep gayathri mon 6192023 1132 deothal chanju hep has been contemplated as runofthe river scheme on deothal nallah chanju nallah a tributary of baira river in upper reaches is called deothal nallah in churah subdivision in district chamba of himachal pradesh utilizing gross head of 66841m for generation of 30 mw three generating units of 10 mw each in an underground power house the project is expected to generate annual energy of 10135 mu in a 90 dependable year capacity 30 mw design energy in 90 dependable year 10135 mu gross head 66841 m diversion structure drop type trench weir 2810 m 25 m x 200 m head race tunnel concrete lined d shaped tunnel 210 m x 270 m 4429 m in length penstock pressure shaft underground circular steel pipe 130 m dia 914 m in length power house under ground 8590 m x 1530 m x 1750 m village dantoi tehsil churah district chamba state himachal pradesh under investigation preconst clearances stage 1325 mw  ravi deothal nallah chamba hp 30 mw  