| Similarity | Rank | |
|---|---|---|
| mid-wales | 0.826 | 28662 |
| dyfi | 0.826 | 93127 |
| aberdulais | 0.822 | 63137 |
| leadon | 0.821 | 62022 |
| pembrokeshire | 0.814 | 20558 |
| mawddach | 0.808 | 83331 |
| skokholm | 0.804 | 94222 |
| inverness-shire | 0.800 | 70140 |
| peatland | 0.798 | 46207 |
| broadford | 0.798 | 59409 |
| teifi | 0.797 | 40249 |
| ochil | 0.797 | 88614 |
| sirhowy | 0.794 | 95155 |
| towy | 0.793 | 77032 |
| duddingston | 0.792 | 56905 |
| nigg | 0.791 | 78610 |
| nidderdale | 0.791 | 77285 |
| neroche | 0.791 | 91523 |
| broads | 0.790 | 34542 |
| petherton | 0.787 | 92755 |
| helmsdale | 0.786 | 80540 |
| ribble | 0.785 | 30688 |
| vyrnwy | 0.784 | 60661 |
| quantocks | 0.784 | 56591 |
| nidd | 0.783 | 64195 |