Brook lamprey · Lampetra planeri

Brook lamprey in the River Wey North

Largest measured brook lamprey: 16 cm

The largest brook lamprey measured in Environment Agency surveys of the River Wey North was 16 cm, recorded at Sheephatch on 23 October 2024.

This is the only individual brook lamprey length in the dataset for this river.

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

See brook lamprey records across England →

Most recent observation23 October 2024Sheephatch · 1 fish

Largest measured brook lamprey: 16 cm
Length sample: 1 fish
Survey records: 9
Survey locations: 3

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
16 cm	23 Oct 2024	Sheephatch	168010

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
Sheephatch	17 Nov 2004	23 Oct 2024	3
Cox Bridge	14 Jun 2005	23 Jun 2011	4
Snayles Lynch	27 May 2005	8 Jun 2006	2

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

2004–2024

Survey records by year

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

104

205

106

107

008

109

110

111

012

013

014

015

016

017

018

019

020

021

022

023

124

Fish measured by surveyors

Recorded length

One individual length was recorded for this fish and river.

Recorded length: 16 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wey North

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

Brown / sea trout Bullhead Dace Stone loach Chub Roach

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 →