Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the River Tees

Largest measured rainbow trout: 35.4 cm

The largest rainbow trout measured in Environment Agency surveys of the River Tees was 35.4 cm, recorded at SAP/BT Quin, River Balder, Downstream Hury on 1 November 1999.

Across 9 measured rainbow trout, the median measured length was 11.1 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 Tees.

See rainbow trout records across England →

Most recent observation4 November 1999SAP/BT Annual, Egglestone Abbey · 1 fish

Largest measured rainbow trout: 35.4 cm
Median length: 11.1 cm
Fish measured: 9
Survey locations: 4

Individual EA measurements

Largest measured rainbow 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
35.4 cm	1 Nov 1999	SAP/BT Quin, River Balder, Downstream Hury	110547
23.4 cm	4 Nov 1999	SAP/BT Annual, Egglestone Abbey	110514
20.7 cm	1 Dec 1995	SAP/BT Annual, River Balder - Cotherstone	110526
11.6 cm	1 Nov 1999	SAP/BT Quin, River Balder, Downstream Hury	110547
11.1 cm	1 Nov 1999	SAP/BT Quin, River Balder, Downstream Hury	110547
10.2 cm	1 Nov 1999	SAP/BT Quin, River Balder, Downstream Hury	110547
10.1 cm	1 Nov 1999	SAP/BT Quin, River Balder, Downstream Hury	110547
9.8 cm	1 Nov 1999	SAP/BT Quin, River Balder, Cotherstone Mill	110546
8.9 cm	1 Nov 1999	SAP/BT Quin, River Balder, Downstream Hury	110547

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

Explore the river

Where rainbow trout were found

Each point marks a survey location with at least one rainbow 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 rainbow trout
SAP/BT Annual, Egglestone Abbey	4 Nov 1999	4 Nov 1999	1
SAP/BT Quin, River Balder, Downstream Hury	1 Nov 1999	1 Nov 1999	1
SAP/BT Quin, River Balder, Cotherstone Mill	1 Nov 1999	1 Nov 1999	1
SAP/BT Annual, River Balder - Cotherstone	1 Dec 1995	1 Dec 1995	1

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

1995–1999

Survey records by year

Each bar shows how many survey visits recorded rainbow trout that year.

195

096

097

098

399

Fish measured by surveyors

Measured length distribution

See how the 9 measured fish were spread across different length ranges.

Smallest: 8.9 cm
Lower quarter: 10.1 cm
Median: 11.1 cm
Upper quarter: 20.7 cm
Largest: 35.4 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Tees

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

Brown / sea trout Bullhead Minnow Stone loach European eel Atlantic salmon

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 →