| Station Reference | 2821TH |
| Parameter | Level |
| Parameter Type | Stage |
| River | Borehamwood Brook |
| Catchment Name | Colne (Upper) |
| Status | Active |
| Highest Recent Level | 2.22 m on 19-Jul-25 |
| Max Level on Record | 2.22 m on 19-Jul-25 |
| Min Level on Record | 0.82 m on 15-Feb-10 |
| Typical Level Range High | 1.8 m |
| Typical Level Range Low | 0.83 m |