| RESERVOIR | THUNAKADAVU |
| PHOTO |  |
| DISTRICT | COIMBATORE |
| TALUK | POLLACHI |
| TOWN | POLLACHI |
| GIS-LOCATION | LAT:10d25'00"-N; LONG:76d46'00"-E |
| GENERAL HISTORY | RIVER-THUNAKADAVU; BASIN-CHALAKUDI; PERIOD OF CONSTRUCTION-1963 TO 1965; COST-Rs.57.13 LAKHS |
| HYDRAULIC PARTICULARS | CATCHMENT AREA- 43.35SQ.KM; DESIGN FLOOD-495.25 CUMECS; FRL-539.50M; MWL-539.50M; WATER SPREAD AREA AT FRL-4.32 SQ.KM; CAPACITY AT FRL-15.77Mcum |
| DAM DETAILS | TYPE- EARTH DAM ; TOP OF ROAD WAY-542.24M; MAXIMUM HEIGHT-25.91M; LENGTH OF EARTH DAM- 313.94M. |
| SPILLWAY DETAILS | VENTS- 3x6.53x4.57M; CREST-531.88M; LIFT GATES; DISCHARGE CAPACITY-495.25 CUMECS |
| RIVER SLUICE DETAILS | THIS IS CONNECTED TO PERUVARIPALLAM RESERVOIR BY OPEN CANAL OF 671.5M TO RECEIVE WATER FROM PARAMBIKULAM AND PERUVARIPALLAM RESERVOIRS.FROM THIS WATER IS TAKEN TO SIRKARPATHY P.H. THROUGH HORSE SHOE TUNNEL 3.66M SIZE AND LENGTH 3850M. |
| CANAL SLUICE DETAILS | THE TAIL RACE WATER FEED SETHUMADAI CANAL BENEFITING 2014 HA, ALIYAR FEEDER CANAL BENEFITING 1887 HA, CONTOUR CANAL 53.10 KM LENGTH FALLS INTO THIRUMURTHI RESERVOIR. |
| AYACUT DETAILS | 3901.00 HA IN POLLACHI TALUK |