Brook lamprey · Lampetra planeri

Brook lamprey in the River Rivelin

Largest measured brook lamprey: 17 cm

The largest brook lamprey measured in Environment Agency surveys of the River Rivelin was 17 cm, recorded at Havelock Dam on 10 August 2009.

Across 49 measured brook lamprey, the median measured length was 14 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Rivelin.

See brook lamprey records across England →

Most recent observation11 August 2009Allotments Bridge · 1 fish

Largest measured brook lamprey: 17 cm
Median length: 14 cm
Fish measured: 49
Survey locations: 7

Individual EA measurements

Largest measured brook lamprey

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
17 cm	10 Aug 2009	Havelock Dam	118618
17 cm	4 Aug 2009	Hospital	118620
17 cm	4 Aug 2009	Hospital	118620
17 cm	4 Aug 2009	Coppice Cottages	118613
17 cm	3 Sept 2004	Rivelin Mill	84098
17 cm	1 Aug 2003	Hospital	109422
16.5 cm	10 Aug 2009	Havelock Dam	118618
16.5 cm	4 Aug 2009	Hospital	118620
16.5 cm	4 Aug 2009	Upstream Coppice Cottages	118612
16 cm	4 Aug 2009	Hospital	118620

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where brook lamprey were found

Each point marks a survey location with at least one brook lamprey 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 brook lamprey
Allotments Bridge	11 Aug 2009	11 Aug 2009	1
Havelock Dam	10 Aug 2009	10 Aug 2009	1
Rivelin Mill	1 Aug 2003	6 Aug 2009	3
Upstream Coppice Cottages	3 Sept 2004	4 Aug 2009	2
Hospital	1 Aug 2003	4 Aug 2009	4
Coppice Cottages	8 Aug 2008	4 Aug 2009	2
Upstream Roscoe Bridge	1 Aug 2003	1 Aug 2003	1

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2003–2009

Survey records by year

Each bar shows how many survey visits recorded brook lamprey that year.

303

304

005

006

007

208

609

Fish measured by surveyors

Measured length distribution

See how the 49 measured fish were spread across different length ranges.

Smallest: 6 cm
Lower quarter: 11 cm
Median: 14 cm
Upper quarter: 15.9 cm
Largest: 17 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Rivelin

Compare other species with enough survey and measurement data for a detailed page.

Brown / sea trout Bullhead Stone loach 3-spined stickleback Perch Minnow

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 →