Historic monitoring evidence · Environment Agency
Thornton Lock
Lincolnshire and Northamptonshire · survey site
This page records ecological survey evidence. It is not proof of current fish presence, abundance, fishing quality, access, permission or safety at this location.
Observed taxa
What monitoring recorded here
Taxa are ordered by latest survey date. Counts and records reflect monitoring events, not an angling forecast.
Dace
Leuciscus leuciscus- First record
- 11 Jun 1985
- Latest record
- 14 Jun 2023
- Survey events
- 9
Gudgeon
Gobio gobio- First record
- 11 Jun 1985
- Latest record
- 14 Jun 2023
- Survey events
- 7
Pike
Esox lucius- First record
- 30 Mar 1988
- Latest record
- 14 Jun 2023
- Survey events
- 7
Bullhead
Cottus gobio- First record
- 11 Jun 1985
- Latest record
- 14 Jun 2023
- Survey events
- 7
Chub
Leuciscus cephalus- First record
- 11 Jun 1985
- Latest record
- 14 Jun 2023
- Survey events
- 6
Stone loach
Barbatula barbatula- First record
- 11 Jun 1985
- Latest record
- 14 Jun 2023
- Survey events
- 6
Roach
Rutilus rutilus- First record
- 11 Jun 1985
- Latest record
- 7 Apr 2017
- Survey events
- 8
Brown / sea trout
Salmo trutta- First record
- 11 Jun 1985
- Latest record
- 7 Apr 2017
- Survey events
- 6
Perch
Perca fluviatilis- First record
- 11 Jun 1985
- Latest record
- 7 Apr 2017
- Survey events
- 5
Minnow
Phoxinus phoxinus- First record
- 11 Jun 1985
- Latest record
- 7 Apr 2017
- Survey events
- 4
Brook lamprey > ammocoete
Lampetra planeri- First record
- 16 Apr 2013
- Latest record
- 7 Apr 2017
- Survey events
- 2
3-spined stickleback
Gasterosteus aculeatus- First record
- 11 Jun 1985
- Latest record
- 15 Apr 2014
- Survey events
- 4
European eels > elvers
Anguilla anguilla- First record
- 10 May 2011
- Latest record
- 15 Apr 2014
- Survey events
- 3
Tench
Tinca tinca- First record
- 11 May 1994
- Latest record
- 11 May 1994
- Survey events
- 1
Roach x common bream hybrid
Rutilus rutilus x Abramis brama- First record
- 11 May 1994
- Latest record
- 11 May 1994
- Survey events
- 1
Common bream
Abramis brama- First record
- 30 Mar 1988
- Latest record
- 30 Mar 1988
- Survey events
- 1
Rules and access
Check before you travel.
Environment Agency ecology records do not carry fishing-rights boundaries or live restrictions. Confirm the fishery owner, permission, local byelaws, seasonal rules, safety notices and current conditions before setting out.
Check live freshwater fishing rulesProvenance
Source, licence and boundary
- SourceEnvironment Agency Ecology & Fish Data
- LicenceOpen Government Licence v3.0
- Source copy retrieved23 Jul 2026
- Terms checked23 Jul 2026
- CoverageHistoric monitoring evidence, separately dated per record
- Not assertedCurrent presence, access, permission, fishing quality or safety