 gyspa dam project gyspa dam project gayathri mon 6192023 1223 the project envisages construction of a 200 m high storage dam on bhaga river upstream of gyspa village in keylong tehsil of lahaul spiti district of himachal pradesh the water so stored shall be fed into 570m dia 14964km long hrt a surge shaft 20m diameter 200m deep a pressure shaft 450m dia 520m long to feed four vertical shaft francis turbines each of 75 mw capacity an underground power house is proposed at an el 3025m about 300m u s of stingri gref house on the right bank of river bhaga the scheme shall utilize a gross head of 43033 m for generating 300 mw of power with annual generation of 89486 mu in 90 dependable year the storage dam will impound 65 maf of water gyspa dam project has been declared as national importance project cwc mowr released iwrd fund amounting to rs 500 cr to hppcl for investigation preparation of dpr capacity 300 mw design energy in 90 dependable year 89486 mu gross head 43033 m diversion structure 200 m high storage dam head race tunnel 14964km long hrt 570 dia penstock pressure shaft a pressure shaft 450m dia 520m long power house underground four vertical shaft francis turbines each of 75 mw capacity village gyspa tehsil keylong district lahaul spiti state himachal pradesh under investigation preconst clearances stage 1325 mw  chenab bhaga lahaul spiti hp 300 mw  