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COUNTY OFFALY |
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| Site No. |
River | OS Map |
Nat. Grid Reference |
Catch- ment Area km2 |
Rainfall mm |
Prov. Mean Flow m3/s |
Head m |
Potent. Inst. Cap. kW |
Potent. Annual Energy MWh |
Site Rating |
| 6 | Brosna | 8-6 | N256 325 | 329 | 925 | 5.17 | 2.6 | 67 | 268 | Operating |
| 7 | Brosna | 8-6 | N253 324 | 330 | 925 | 5.19 | 2.5 | 89 | 356 | Operating |
| 15 | Silver | 9-14 | N359 289 | 30 | 900 | 0.459 | 4.0 | 12 | 53 | M |
| 20 | Brosna | 14-14 | N073 221 | 1215 | 930 | 16.00 | 3.5 | 446 | 2100 | Operating |
| 22 | Silver | 16-4 | N314 278 | 37 | 900 | 0.566 | 2.5 | 11 | 44 | Operating |
| 25 | Tullamore | 17-9 | N336 249 | 112 | 880 | 1.675 | 2.0 | 26 | 107 | M |
| 35 | Un-named | 29-4 | N015 139 | 18 | 890 | 0.272 | 8.0 | 17 | 78 | M |
| 41 | Silver | 32-13 | N229 093 | 13.6 | 1350 | 0.316 | 4.0 | 10 | 45 | M |
| 45A | Camcor | 35-10 | N061 045 | 163 | 1042 | 2.887 | 2.0 | 45 | 206 | M |
| 45B | Camcor | 35-10 | N061 045 | 163 | 1042 | 2.887 | 3.3 | 81 | 367 | F |
| 53 | Silver | 37-1 | N228 084 | 13 | 1370 | 0.3 | 5.0 | 11 | 52 | M* |
| 61 | Little Brosna | 42-12 | S105 913 | 192.5 | 980 | 3.2 | 2.5 | 68 | 298 | M |
| 64B | Little Brosna | 42-16 | S112 905 | 31 | 900 | 0.474 | 5.5 | 20 | 92 | M |
| 43 | Little Brosna | 35-1 | N032 080 | 495 | 958 | 8.062 | 1.5 | 57 | 345 | M |
