| Dam/Weir: LOWER PERIYAR ( PAMBLA) DAM |
| Location | Latitude : 9⁰ 57′ 44 ” N | Dam Features |
| Longitude: 76⁰ 57′ 24” E | Type of Dam | Concrete – gravity |
| Panchayath | Kanjikuzhi | Classification | HH ( High Height) |
| Village | Kanjikuzhi | Maximum Water Level (MWL) | 256.00 m |
| District | Idukki | Full Reservoir Level ( FRL) | 253.00 m |
| River Basin | Periyar | Storage at FRL | 5.30 Mm3 |
| River | Periyar | Height from deepest foundation | 32.36 m |
| Release from Dam to river | Periyar | Length | 284.00 m |
| Taluk through which release flows | Idukki, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor, Paravur | Spillway | Ogee type- 5 Nos. radial gates, each of size 13.5 x 15.65 m |
| Year of completion | 1998 | Crest Level | 237.74 m |
| Name of Project | Lowr Periyar HEP | River Outlet | 2 Nos. Lower vent gates of size 6.75 x 15.65 m |
| Purpose of Project | Hydro Power | Officers in charge & phone No. | Executive Engineer, Dam Safety Division No. IV, Pambla, Idukki (Dist.), Kerala, PIN- 685606 Phone-9446008421 |
| Installed capacity of the Project | 180 MW | Assistant Executive Engineer, Dam Safety Sub Division, Pambla PIN- 685606 Phone- 9496011802 |
| Project Identification Code ( PIC) | KL29HH0051 |
| The Lower Periyar dam is a part of the Lower Periyar Hydro Electric Project The reservoir of the Lower Periyar Hydro Electric Project (LPHEP) is created by constructing a dam at Pambla across Periyar river. The inflow of Lower Periyar (LP) reservoir is governed by the tail race release of Neriyamangalam Hydro Electric Project and the uncontrolled flow downstream of Kallarkutty and Idukki dams. The water from LP reservoir is diverted through a water conductor system to the Powerhouse of LPHEP located at Karimanal on the left bank of Periyar river. After generating power, the water is released to Periyar river itself. |
