Brown / sea trout · Salmo trutta

Brown / sea trout in the River Tees

Largest measured brown / sea trout: 68.9 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Tees was 68.9 cm, recorded at Temporal Coarse, Thornaby - U/s The Holmes on 6 September 2001.

Across 17,086 measured brown / sea trout, the median measured length was 12.1 cm.

Surveyors recorded weights for 300 brown / sea trout. The median was 0.9 oz (0.026 kg) and the largest recorded weight was 9.4 oz (0.2655 kg).

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

See brown / sea trout records across England →

Most recent observation10 October 2025SAP/BT Annual, Gill Beck - Gill Beck Bridge · 136 fish

Largest measured brown / sea trout: 68.9 cm
Median length: 12.1 cm
Fish measured: 17,086
Survey locations: 99

Individual EA measurements

Largest measured brown / sea trout

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
68.9 cm	6 Sept 2001	Temporal Coarse, Thornaby - U/s The Holmes	25248
67.3 cm	10 Aug 2005	Temporal Coarse, Thornaby - U/s The Holmes	85901
64.7 cm	12 Sept 2001	Temporal Coarse, Egglescliffe - Leven Mouth	24805
63.6 cm	23 Sept 2003	Temporal Coarse, Aislaby	78149
62.1 cm	7 Oct 2002	Temporal Coarse, Blackwell Bridge	72437
62.1 cm	9 Sept 2002	Temporal Coarse, Thornaby - U/s The Holmes	72409
61.3 cm	12 Sept 2001	Temporal Coarse, Egglescliffe - Leven Mouth	24805
61.2 cm	16 Oct 2000	SAP/BT Annual, River Greta - Brignall Mill	110574
59.8 cm	10 Aug 2005	Temporal Coarse, Thornaby - U/s The Holmes	85901
59.2 cm	6 Sept 2001	Temporal Coarse, Thornaby - U/s The Holmes	25248

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

Explore the river

Where brown / sea trout were found

Each point marks a survey location with at least one brown / sea trout 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 brown / sea trout
SAP/BT Annual, River Greta - Brignall Mill	30 Nov 1995	10 Oct 2025	25
SAP/BT Annual, Gill Beck - Gill Beck Bridge	30 Nov 1995	10 Oct 2025	25
SAP/BT Quin, Middelton In Teesdale	22 Sept 1994	9 Oct 2025	9
SAP/BT Quin, Barnard Castle	18 Sept 1995	9 Oct 2025	4
SAP/BT Annual, Ornella Farm	3 Nov 1999	9 Oct 2025	19
SAP/BT Annual, Summerhouse Beck - Piercebridge	30 Nov 1995	8 Oct 2025	22
SAP/BT Annual, Deepdale Beck - Barnard Castle	8 Nov 1995	8 Oct 2025	24
SAP/BT Annual, Bowlees Beck - D/s Picnic Site	15 Nov 1995	8 Oct 2025	25
SAP/BT Annual, River Balder - Cotherstone	1 Dec 1995	24 Sept 2025	25
Temporal Coarse, Low Coniscliffe	8 Aug 2001	11 Sept 2025	11
BT Sentinel, River Tees, Mine Head	27 Jun 2006	8 Sept 2025	4
BT Sentinel, River Tees Widdy Bank Farm	28 Jun 2006	8 Sept 2025	8
BT Sentinel, Maize Beck, Birkdale	29 Jun 2006	8 Sept 2025	9
Temporal Coarse, Croft	15 Aug 2001	11 Aug 2025	17
Temporal Coarse, Low Moor	18 Sept 2002	4 Aug 2025	17
SAP/BT Quin, River Greta, East Mellwaters	21 Jun 2005	31 Oct 2023	3
SAP/BT Quin, River Greta,Sleightholme Beck, Trough	30 Nov 1995	27 Oct 2023	4
SAP/BT Quin, River Leven, Crathorne	1 Jul 2005	26 Jun 2023	3
SAP/BT Quin, River Leven D/s Foxton Bridge	1 Jul 2005	26 Jun 2023	3
SAP/BT Quin, River Leven, Potto Beck, Sexhow	29 Jun 2005	23 Jun 2023	3
SAP/BT Quin, River Leven, Hutton Rudby	1 Jul 2005	23 Jun 2023	3
SAP/BT Quin, River Leven, Angrove West Farm	29 Jun 2005	23 Jun 2023	3
SAP/BT Quin, River Leven, Little Ayton	29 Jun 2005	22 Jun 2023	3
SAP/BT Quin, River Leven, Easby	29 Jun 2005	22 Jun 2023	3
SAP/BT Quin, River Leven, Broughton Bridge Beck	29 Jun 2005	22 Jun 2023	3
Temporal Coarse, Neasham	13 Aug 2001	27 Sept 2022	16
SAP/BT Quin, Percy Beck, Barnard Castle	8 Nov 1995	14 Sept 2022	6
SAP/BT Quin, Clow Beck, Willow Bridge	16 Nov 2004	14 Sept 2022	4
SAP/BT Quin, Clow Beck, Aldbrough St John	16 Nov 2004	14 Sept 2022	4
SAP/BT Quin, Thorsgill Beck, Nr Boldron	10 Nov 2004	13 Sept 2022	2
SAP/BT Quin, Sudburn Beck, Bow Bridge	14 Nov 1995	13 Sept 2022	6
SAP/BT Quin, Scur Beck, North Gill Farm	10 Nov 2004	13 Sept 2022	4
SAP/BT Quin, Langley Beck, West Farm	4 Nov 2004	13 Sept 2022	4
SAP/BT Quin, Langley Beck, Selaby Ford	14 Nov 1995	13 Sept 2022	5
SAP/BT Quin, Langley Beck, Dent Gate farm	4 Nov 2004	13 Sept 2022	4
SAP/BT Quin, Wilden Beck, Nr Doe Park Farm	12 Oct 2000	8 Sept 2022	5
SAP/BT Quin, River Balder, Downstream Hury	1 Nov 1999	8 Sept 2022	8
SAP/BT Quin, Rowton Beck, Low Wray Farm	9 Nov 2004	22 Aug 2022	4
SAP/BT Quin, Park End Runner, Middleton In Teesdal	14 Nov 1995	22 Aug 2022	5
Eggleston Burn - Great Eggleshope	22 Aug 2022	22 Aug 2022	1
BT Sentinel, River Tees, Cronkley Bridge	10 Oct 2002	30 Oct 2019	6
River Tees near Metalband Hill	19 Sept 2014	23 Oct 2019	6
River Balder West Park Farm	7 Oct 2016	4 Sept 2019	3
Temporal Coarse, Low Haile Bridge	19 Sept 2002	18 Sept 2018	15
SAP/BT Annual, Egglestone Abbey	21 Sept 1994	21 Oct 2016	17
Force Garth Quarry	28 Sept 2015	23 Sept 2016	2
SAP/BT Annual, Clow Beck - Monk End Farm	8 Nov 1995	12 Sept 2016	17
SAP/BT Annual, Broken Scar	13 Oct 1999	10 Aug 2016	15
SAP/BT Quin, Thorsgill Beck, Egglestone Abbey	8 Nov 1995	27 Jul 2016	4
SAP/BT Quin, Killerby Beck, Killerby	4 Nov 2004	26 Jul 2016	3
Temporal Coarse, Blackwell Bridge	7 Oct 2002	10 Sept 2015	11
WFD O Clow Beck at Clow Beck Farm	3 Oct 2013	3 Oct 2013	1
BT Sentinel, Trout Beck, Moorhouse	27 Jun 2006	26 Sept 2013	2
SAP/BT Quin, River Greta, Rutherford Bridge	22 Jun 2005	16 Sept 2011	2
SAP/BT Quin, River Greta, Greta Bridge	21 Jun 2005	16 Sept 2011	2
SAP/BT Quin, River Greta, Gilmonby	21 Jun 2005	16 Sept 2011	2
SAP/BT Quin, River Greta, Thwaite Beck,Thwaite	22 Jun 2005	14 Sept 2011	2
SAP/BT Quin, River Greta, Eller Beck, Rutherford	21 Jun 2005	14 Sept 2011	2
SAP/BT Quin, River Leven, Bense Bridge	29 Jun 2005	9 Jun 2011	2
Temporal Coarse, Swine Lairs u/s ford	10 Aug 2001	21 Oct 2010	7
SAP/BT Quin, Downstream Swine Lairs	13 Jun 2006	21 Oct 2010	2
SAP/BT Quin, Ornella Farm 2	17 Oct 2006	20 Oct 2010	3
Temporal Coarse, Middleton One Row	23 Aug 2001	14 Oct 2010	8
SAP/BT Quin, River Tees Blackwell	14 Oct 2010	14 Oct 2010	1
Temporal Coarse, Broken Scar	15 Aug 2001	7 Sept 2010	9
Spatial Coarse, Saltersgill Beck, Saltersgill	29 Jun 2010	29 Jun 2010	1
SAP/BT Quin, Langley Beck, Selaby	4 Nov 2004	28 Jun 2010	3
SAP/BT Quin, Holwick Head House	15 Jun 2006	25 Jun 2010	2
SAP/BT Quin, Beer Beck, Romaldkirk	10 Nov 2004	18 Jun 2010	2
SAP/BT Quin, Lance Beck, Cotherstone	10 Nov 2004	16 Jun 2010	2
BT Sentinel, River Balder, Balderhead	21 Jun 2006	22 Sept 2008	2
SAP/BT Annual, High Coniscliffe	23 Sept 1994	1 Nov 2007	12
Spatial Coarse, U/s Broken Scar	25 Sept 2006	25 Sept 2006	1
SAP/BT Quin, Low Coniscliffe	25 Sept 2006	25 Sept 2006	1
Temporal Coarse, Bassleton Beck - U/s pipe bridge	3 Sept 2002	15 Sept 2006	4
Spatial Coarse, Barnard Castle	14 Jun 2006	14 Jun 2006	1
SAP/BT Quin, Wycliffe	21 Sept 1994	13 Jun 2006	7
Temporal Coarse, Winston	15 Sept 1995	5 Oct 2005	6
Temporal Coarse, Clow Beck - Monk End Farm	9 Aug 2001	18 Aug 2005	5
Temporal Coarse, Thornaby - U/s The Holmes	6 Sept 2001	10 Aug 2005	4
SAP/BT Quin, River Greta, Tutta Beck, Tutta Beck	22 Jun 2005	22 Jun 2005	1
Spatial Coarse, Spa Beck, Spa Cottage	16 Nov 2004	16 Nov 2004	1
SAP/BT Quin, Spa Beck, Spa Cottage	16 Nov 2004	16 Nov 2004	1
SAP/BT Quin, Bassleton Beck, Bassleton Bridge	16 Nov 2004	16 Nov 2004	1
Greatham Beck, Newton Hanzard	16 Nov 2004	16 Nov 2004	1
Temporal Coarse, Langley Beck	19 Aug 2002	4 Nov 2004	3
SAP/BT Quin, Sudburn Beck, Bell House	4 Nov 2004	4 Nov 2004	1
SAP/BT Quin, Langley Beck Trib, Westholme Hall	4 Nov 2004	4 Nov 2004	1
Temporal Coarse, Aislaby	23 Sept 2003	23 Sept 2003	1
SAP/BT Quin, Gainford	18 Sept 2003	18 Sept 2003	1
Spatial Coarse, Blackwell Pumping Station	10 Aug 2000	17 Sept 2003	4
Spatial Coarse, Kent Beck, Neasham	17 Jun 2002	17 Jun 2002	1
Spatial Coarse, Mill House, Piercebridge	17 Oct 2001	17 Oct 2001	1
Temporal Coarse, High Coniscliffe	13 Sept 2001	13 Sept 2001	1
Temporal Coarse, Egglescliffe - Leven Mouth	12 Sept 2001	12 Sept 2001	1
WR Monitoring Maize Beck, D/s Birkdale	24 Oct 2000	24 Oct 2000	1
WR Monitoring Blackwell Pumping Station u/s	10 Aug 2000	10 Aug 2000	1
SAP/BT Quin, River Balder, Cotherstone Mill	1 Nov 1999	1 Nov 1999	1
WR Monitoring Egglestone Bridge	23 Sept 1994	21 Oct 1999	5

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

1994–2025

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

594

1995

596

597

198

1099

1600

2401

2602

2703

4504

4105

3606

1807

1508

1709

4010

3211

012

1313

1414

2015

3516

1717

1318

1319

020

721

2322

1623

1024

1525

Fish measured by surveyors

Measured length distribution

See how the 17,086 measured fish were spread across different length ranges.

Smallest: 1.4 cm
Lower quarter: 7.4 cm
Median: 12.1 cm
Upper quarter: 16.5 cm
Largest: 68.9 cm

0–99 mm

7064

100–199 mm

7462

200–299 mm

2045

300–399 mm

404

400–499 mm

500–599 mm

600–699 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 300 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.3 oz (0.009 kg)
Median: 0.9 oz (0.026 kg)
Upper quarter: 2 oz (0.0556 kg)
Heaviest: 9.4 oz (0.2655 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 Tees

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

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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 →