SPECIES RICHNESS IN COUNTY WATERFORD
The total number of species, subspecies, hybrids, varieties and colour forms recorded for Co. Waterford since 1746 is 1530. The average number of species, subspecies, hybrids, varieties and colour forms per tetrad is 219.
Map showing the top twenty scoring tetrads in County Waterford
The top twenty scoring tetrads with the number of species recorded in each since 1746.
| Tetrad | Number of species | Tetrad | Number of species |
| X29R | 453 | S60V | 367 |
| X09P | 428 | S41S | 365 |
| X17Y | 393 | X09Z | 363 |
| S50W | 389 | X49Z | 361 |
| S50L | 379 | X08V | 361 |
| S50V | 377 | S51F | 353 |
| S61F | 375 | S70B | 351 |
| X49J | 374 | S12V | 351 |
| S60X | 369 | S61W | 344 |
| X29X | 367 | S61K | 343 |
National 10 km square grid identification and the number of species recorded for each 10km2
