Individual EA measurements
Largest measured dace
The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.
| Length | Survey date | Survey location | Survey ID |
|---|---|---|---|
| 36.4 cm | 13 Jul 2007 | Upstream Oxnead Bridge | 106274 |
| 28.5 cm | 22 Jun 2016 | Downstream Aylsham Bypass | 148817 |
| 26.3 cm | 16 Jul 2008 | Downstream Aylsham Bypass | 112285 |
| 26.3 cm | 16 Jul 2008 | Downstream Aylsham Bypass | 112285 |
| 26 cm | 18 Jun 2010 | Burgh Hall Farm | 122481 |
| 25.6 cm | 16 Jul 2008 | Downstream Aylsham Bypass | 112285 |
| 25.3 cm | 18 Jun 2010 | Burgh Hall Farm | 122481 |
| 25.3 cm | 18 Jun 2010 | Burgh Hall Farm | 122481 |
| 25 cm | 18 Jun 2010 | Burgh Hall Farm | 122481 |
| 24.9 cm | 5 Jun 2006 | Downstream Aylsham Bypass | 100235 |
Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.
Explore the river
Where dace were found
Each point marks a survey location with at least one dace record.
Choose a point on the map to see what was recorded there.
Map points are approximate and don’t show fishing access. Check local permissions before visiting.
| Place surveyed | First recorded | Last recorded | Visits finding dace |
|---|---|---|---|
| Downstream Plantation Bridge | 13 May 1988 | 20 Jun 2025 | 15 |
| Downstream Buxton Mill | 6 Jul 1988 | 17 Jun 2025 | 17 |
| Lamas Hall | 5 Jul 1988 | 9 Jun 2025 | 17 |
| Downstream Aylsham Bypass | 3 May 1988 | 3 Jun 2025 | 15 |
| Upstream Oxnead Bridge | 10 May 1988 | 20 May 2025 | 14 |
| Downstream Mayton Bridge | 12 Jul 1988 | 2 Aug 2016 | 6 |
| Burgh Hall Farm | 10 Mar 1993 | 27 Jul 2016 | 4 |
| Upstream Mayton Bridge | 7 Jul 1988 | 29 Jun 1998 | 2 |
| Upstream Buxton Mill | 17 Jun 1998 | 17 Jun 1998 | 1 |
| Downstream Burgh Mill | 4 Jun 1998 | 4 Jun 1998 | 1 |
| Downstream Burgh Hall Lock | 5 May 1988 | 2 Jun 1998 | 3 |
| Upstream Coltishall Bridge | 13 Jul 1988 | 13 Jul 1988 | 1 |
| Downstream Oxnead Mill | 11 May 1988 | 11 May 1988 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1988–2025
Survey records by year
Each bar shows how many survey visits recorded dace that year.
Fish measured by surveyors
Measured length distribution
See how the 2,424 measured fish were spread across different length ranges.
- Smallest
- 1.6 cm
- Lower quarter
- 7.1 cm
- Median
- 12.3 cm
- Upper quarter
- 17.6 cm
- Largest
- 36.4 cm
Lengths are direct survey measurements rather than anglers’ catches.
Fish weighed by surveyors
Measured weight summary
Recorded weights were available for 20 dace. This is a subset of the measured fish and may not represent the whole population.
- Lightest
- 0.6 oz (0.017 kg)
- Lower quarter
- 1 oz (0.0288 kg)
- Median
- 1.4 oz (0.041 kg)
- Upper quarter
- 3.2 oz (0.0918 kg)
- Heaviest
- 5 oz (0.142 kg)
These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.
More fish in this river
Explore the River Bure (central)
Compare other species with enough survey and measurement data for a detailed page.
Before you fish
Good to know
These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.
Learn how RiverFish uses the data →