STORAGE vs ROR HYDRO PROJECTS Dr D.V. THAREJA Former: Chairman GFCC MoWR, Director Tech. SNC-L India RoRs are Multipurpose Storage & RoR and not vs RoR Storage HE for Delhi’s Beautification & Water security Conversion of Storage to RoR RoRs are Multipurpose Need to consider benefits of: - Water Security (Ground water charging, water supply, Karcham HE) - Climate change management(Baglihar) - Infrastructure&Prosperity of remote area Then Hydro energy will be? 4 SANMENXIA DAM, CHINA - OPENINGS BEING CREATED FOR SEDIMENT FLUSHING The dam was modified by opening up several conduits under the dam to allow for sediment flushing during the flood peak. SILT FLUSHING THROUGH SANMENXIA DAM 7 Storage & RoR and not vs RoR Typical L-Section along a River Planning of a Dam No storage HE implemented; Gyspa (HP), Bursar (J&K) etc. are in the waiting Storage HE for Delhi’s Beautification & Water security Kishau Renuka Shimla Lakhwar Vyasi Himachal Pradesh Uttaranchal Dehradoon Jagadhari Haryana Karnal Uttar Pradesh Hissar Panipat Delhi Rajasthan Upper Yamuna Basin Map showing Proposed Structures Concept of national projects introduced by MoWR to implement RENUKA (HP), KISHAU and LAKHWAR VYASI (Uttarakhand) projects Conversion of Storage to RoR SUBANSIRI BASIN PROJECT Single High Dam Cascade Development Description Unit Subansiri Lower H.E. Subansiri Middle Subansiri Upper Project Project Project Type of Dam Rockfill Concrete Concrete Concrete Dam height m 265 133* 202* 237* FRL m 334 205 450 460 MRL (in June – July) m 190 418 435 Storage upto FRL M. cum. 13400 1365 1688 1743 Flood storage (FRL-MRL) M. cum. 442 689 499 Dedicated flood cushion above M. cum. -- 258 236 FRL Total flood storage capacity M. cum. 2700 442 947 735 M. cum. 2700 2124 *from deepest foundation level 50,000 MW initiative; Pvt Developer’s tendency to replace dam & provide a barrage (stretched from the conventional 10 m to presently 25 m height) THANKS.