| Clumber Park National Trust | 1449.79 ha | | — |
| Idle Valley Nature Reserve Nottinghamshire Wildlife Trust | 474.43 ha | | — |
| Bevercotes Pit Wood | 119.19 ha | | — |
| Manton Pit Wood | 93.06 ha | | — |
| Babworth Park | 87.25 ha | | — |
| Langold Country Park | 85.68 ha | | — |
| Misson Carr Nature Reserve Nottinghamshire Wildlife Trust | 73.17 ha | | — |
| Daneshill Lakes Nature Reserve Nottinghamshire Wildlife Trust | 64.15 ha | | — |
| Treswell Wood Nature Reserve Nottinghamhamshire Wildlife Trust | 49.5 ha | | — |
| Manor Park | 19.71 ha | | — |
| Costhorpe Plantation | 16.74 ha | | — |
| Kings Park | 11.28 ha | | — |
| Sandhills | 7.19 ha | | — |
| Farr Field | 6.98 ha | | — |
| Wilko Nature Reserve | 3.53 ha | | — |
| The Canch | 3.36 ha | | — |
| Walled Kitchen Garden | 1.58 ha | | — |
| Spa Common | 1.15 ha | | — |
| The Secret Garden | 0.97 ha | | — |
| Sturton Playing Fields | 0.89 ha | | — |
| Castle Hill | 0.81 ha | | — |
| Retford Skate Park | 0.8 ha | | — |
| Clumber Park Dog Paddock | 0.79 ha | | — |
| Floral Display Garden | 0.69 ha | | — |
| Ranskill Village Park | 0.64 ha | | — |
| Gamston and Eaton Woods Roadside Verges SSSI | 0.57 ha | | — |
| Oasis Garden | 0.49 ha | | — |
| Goodwin Hall Garden | 0.35 ha | | — |
| Bassetlaw Museum (Amcott House) | 0.27 ha | | — |
| Rock and Water Garden | 0.27 ha | | — |
| The Green / The Spinney | 0.26 ha | | — |
| Community Garden | 0.07 ha | | — |
| Rose Garden | 0.06 ha | | — |
| Beckingham Marshes entrance RSPB | — | | — |
| Clumber Park National Trust | — | | — |
| Eaton Wood Nature Reserve | — | | — |
| Gamston Wood Nature Reserve | — | | — |