| Holme at Bottoms Mill Footbridge | River Holme | 12 km | Last sampled 24 Jan 2007, before the imported period | |
| Ribble upstream confluence of Holme | River Ribble | 11 km | Last sampled 24 Jan 2007, before the imported period | |
| Holme at Holmfirth Centre downstream of Ribble confluence | River Holme | 11 km | Last sampled 6 Mar 2020, before the imported period | |
| Sude Hill Dike at New Mill | Sude Hill Dike | 11 km | Last sampled 29 May 2012, before the imported period | |
| Thick Hollins Dike at Bent Ley Road | Thick Hollins Dike | 9.2 km | Last sampled 29 May 2012, before the imported period | |
| Meltham Dike at Huddersfield Road - Meltham | Meltham Dike | 9.2 km | Last sampled 17 Mar 2017, before the imported period | |
| Hall Dike upstream of Meltham sewage treatment works | Hall Dike | 9.1 km | 4 Jun 2026 · 4 months ago | Oxygen 96.5%Temp 13 °CpH 7.8Ammonia 0.067 mg/l |
| New Mill Dike at Luke Lane - Thongsbridge | New Mill Dike | 8.3 km | 5 Mar 2025 · 19 months ago | Oxygen 100.4%Temp 5.8 °CpH 7.81Ammonia 0.1 mg/l |
| Hall Dike at Healey House | Hall Dike | 7.9 km | Last sampled 29 May 2012, before the imported period | |
| Holme at Smithy Place - Brockholes | River Holme | 7.1 km | Last sampled 4 Mar 2020, before the imported period | |
| Mag Brook at Cocking Steps | Mag Brook | 6.9 km | Last sampled 29 May 2012, before the imported period | |
| Holme at Honley Bridge | River Holme | 5.6 km | Last sampled 4 Mar 2020, before the imported period | |
| Mag Brook at Honley | Mag Brook | 5.1 km | Last sampled 4 Mar 2020, before the imported period | |
| Dean Clough at Berry Brow | unnamed stream | 2.7 km | Last sampled 31 May 2012, before the imported period | |