| District | Name of tank | Area (ha) | Total production (t) | Production (kg/ha) |
| Anuradhapura | Kalawewa | 2 552 | 183.92 | 72.0 |
| Padaviya | 2 572 | 25.20 | 9.8 | |
| Mabavilachchiya | 960 | 117.13 | 122.0 | |
| Rajangane | 1 560 | 774.22 | 496.0 | |
| Mabakandrawa | 1 440 | 92.67 | 64.3 | |
| Nachchaduwa | 1 763 | 995.32 | 564.5 | |
| Huruluwewa | 2 100 | 41.14 | 19.5 | |
| Polonnaruwa | Kadulla | 2 505 | 474.55 | 190.0 |
| Parakrama Samudra | 2 500 | 1 132.22 | 452.9 | |
| Minneriya | 2 520 | 548.25 | 217.5 | |
| Hambantota | Ridiyagama | 878 | 65.80 | 75.0 |
| Badagiriya | 476 | 126.94 | 266.6 | |
| Yoda Kandiya | 572 | 56.76 | 116.7 | |
| Udukiriwela | 260 | 17.04 | 65.5 | |
| Weerawila (1 400 acres) | 45.39 | |||
| Mullaitivu | Iranamadu | 2 300 | 152.36 | 66.2 |
| Vavunikulam | 1 260 | 239.56 | 190.1 | |
| Thannimarippu | 90.52 | |||
| Muthayankaddu | 249.26 | |||
| Udayankaddu | 50.35 | |||
| Pavakulam | 65.60 | |||
| Batticaloa-Amparai | Kamblue | 139.22 | ||
| Palamoya | 992 | 463.56 | 467.3 | |
| Senanayaka Samudra | 7 700 | 1 096.78 | 142.4 | |
| Namal Oya | 640 | 28.48 | 44.5 | |
| Horaborawewa | 235.31 | |||
| Ratnapura | Udawalawe | 3 372 | 864.74 | 256.4 |
| Kurunegala | Magallawewa | 292 | 126.59 | 433.5 |
| Puttalam | Tabbowa | 456 | 288.62 | 633 |
| Up-country reservoirs | ||||
| Castereigh | 21.73 | |||
