European eel · Anguilla anguilla

European eel in the Crooks Beck

Largest measured european eel: 41 cm

The largest european eel measured in Environment Agency surveys of the Crooks Beck was 41 cm, recorded at 1031.60 Lowgill Beck, Hayber Beck on 12 August 2013.

Across 15 measured european eel, the median measured length was 22.5 cm.

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

See european eel records across England →

Most recent observation17 June 20261031.10 In Warcop Village · 1 fish

Largest measured european eel: 41 cm
Median length: 22.5 cm
Fish measured: 15
Survey locations: 7

Individual EA measurements

Largest measured european eel

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
41 cm	12 Aug 2013	1031.60 Lowgill Beck, Hayber Beck	137837
34 cm	17 Jun 2026	1031.10 In Warcop Village	182084
32.5 cm	9 Jul 2007	1031.60 Lowgill Beck, Hayber Beck	107446
32.5 cm	12 Aug 2002	1030.50 Hayber Beck - on army range	78179
27.5 cm	9 Jul 2007	1031.60 Lowgill Beck, Hayber Beck	107446
27.5 cm	12 Aug 2002	1030.50 Hayber Beck - on army range	78179
24 cm	12 Aug 2013	1031.60 Lowgill Beck, Hayber Beck	137837
22.5 cm	6 Aug 2007	1031.00 Hayber Beck, nr Warcop	108179
22.5 cm	9 Jul 2007	1031.60 Lowgill Beck, Hayber Beck	107446
22.5 cm	9 Jul 2007	1031.60 Lowgill Beck, Hayber Beck	107446

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

Explore the river

Where european eel were found

Each point marks a survey location with at least one european eel 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 european eel
1031.10 In Warcop Village	17 Jun 2026	17 Jun 2026	1
1031.60 Lowgill Beck, Hayber Beck	12 Aug 2002	12 Aug 2013	4
1031.00 Hayber Beck, nr Warcop	23 Jul 2002	6 Aug 2007	3
1031.65 Lowgill Beck Row End	15 Jun 2004	15 Jun 2004	1
1031.55 Lowgill Beck - West View Farm	9 Jun 2004	9 Jun 2004	1
1031.20 Crooks Beck Warcop	9 Jun 2004	9 Jun 2004	1
1030.50 Hayber Beck - on army range	12 Aug 2002	12 Aug 2002	1

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

2002–2026

Survey records by year

Each bar shows how many survey visits recorded european eel that year.

302

003

504

005

006

207

008

009

010

011

012

113

014

015

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 15 measured fish were spread across different length ranges.

Smallest: 12.5 cm
Lower quarter: 16 cm
Median: 22.5 cm
Upper quarter: 30 cm
Largest: 41 cm

100–199 mm

200–299 mm

300–399 mm

400–499 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Crooks Beck

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

Brown / sea trout

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 →