| RESERVOIR | LOWERNIRAR |
| PHOTO |  |
| DISTRICT | COIMBATORE |
| TALUK | POLLACHI |
| TOWN | POLLACHI |
| GIS-LOCATION | LAT:10d16'00"-N; LONG:76d59'00"-E |
| GENERAL HISTORY | RIVER-NIRAR; BASIN-ALIYAR; PERIOD OF CONSTRUCTION-1974 TO 1982; COST-Rs.1240.00 LAKHS |
| HYDRAULIC PARTICULARS | CATCHMENT AREA- 37.20SQ.KM; DESIGN FLOOD-1303.29 CUMECS; FRL-1021.08M; MWL-1021.08M; WATER SPREAD AREA AT FRL-0.52 SQ.KM.; CAPACITY AT FRL-7.76Mcum |
| DAM DETAILS | TYPE-MASONRY DAM ; TOP OF ROAD WAY-1024.13M; MAXIMUM HEIGHT-50.29M; LENGTH OF EARTH DAM-14.02M; MASONRY DAM- 174.96M |
| SPILLWAY DETAILS | VENTS-3x11.50x7.50M; CREST-1013.58M; LIFT DATES ; DISCHARGE CAPACITY-1303.29 CUMECS |
| RIVER SLUICE DETAILS | VENT 1x1.52x1.83M; SILL-1007.36M.; DISCHARGE-33.05 CUMECS. |
| CANAL SLUICE DETAILS | TUNNEL 8047M TO SHOLAYAR. |
| AYACUT DETAILS | NO DIRECT AYACUT |