Historic monitoring evidence · Environment Agency
Thwaite Weir
Yorkshire · 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.
Brown / sea trout
Salmo trutta- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 10
Chub
Leuciscus cephalus- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 10
Gudgeon
Gobio gobio- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 10
Roach
Rutilus rutilus- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 10
Perch
Perca fluviatilis- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 10
Minnow
Phoxinus phoxinus- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 10
Stone loach
Barbatula barbatula- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 9
Dace
Leuciscus leuciscus- First record
- 25 Aug 1998
- Latest record
- 5 Jul 2010
- Survey events
- 6
Bullhead
Cottus gobio- First record
- 9 Jul 2003
- Latest record
- 5 Jul 2010
- Survey events
- 5
Common bream
Abramis brama- First record
- 9 Jul 2003
- Latest record
- 5 Jul 2010
- Survey events
- 4
Pike
Esox lucius- First record
- 25 Aug 1998
- Latest record
- 24 Jun 2008
- Survey events
- 4
Tench
Tinca tinca- First record
- 24 Jun 2008
- Latest record
- 24 Jun 2008
- Survey events
- 1
Orfe / Ide
Leuciscus idus- First record
- 24 Jun 2008
- Latest record
- 24 Jun 2008
- Survey events
- 1
Rainbow trout
Oncorhynchus mykiss- First record
- 9 Jul 2007
- Latest record
- 9 Jul 2007
- 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