Historic monitoring evidence · Environment Agency
Terwick Mill
Solent and South Downs · 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
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 23
Pike
Esox lucius- First record
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 23
Bullhead
Cottus gobio- First record
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 23
Stone loach
Barbatula barbatula- First record
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 23
European eel
Anguilla anguilla- First record
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 22
Minnow
Phoxinus phoxinus- First record
- 15 Jul 2003
- Latest record
- 16 Jun 2026
- Survey events
- 22
Dace
Leuciscus leuciscus- First record
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 21
Grayling
Thymallus thymallus- First record
- 18 Jul 2002
- Latest record
- 16 Jun 2026
- Survey events
- 20
Gudgeon
Gobio gobio- First record
- 14 Jul 2004
- Latest record
- 16 Jun 2026
- Survey events
- 18
Perch
Perca fluviatilis- First record
- 7 Jul 2006
- Latest record
- 16 Jun 2026
- Survey events
- 18
Brook lamprey
Lampetra planeri- First record
- 15 Jul 2003
- Latest record
- 16 Jun 2026
- Survey events
- 10
Roach
Rutilus rutilus- First record
- 1 Jul 2005
- Latest record
- 16 Jun 2026
- Survey events
- 8
Chub
Leuciscus cephalus- First record
- 18 Jul 2002
- Latest record
- 24 Jul 2025
- Survey events
- 22
European eels > elvers
Anguilla anguilla- First record
- 12 Jun 2024
- Latest record
- 12 Jun 2024
- Survey events
- 1
Brook lamprey ammocoetes
Lampetra planeri- First record
- 12 Jun 2024
- Latest record
- 12 Jun 2024
- Survey events
- 1
Tench
Tinca tinca- First record
- 11 Jul 2023
- Latest record
- 11 Jul 2023
- Survey events
- 1
3-spined stickleback
Gasterosteus aculeatus- First record
- 7 Jul 2006
- Latest record
- 12 Jul 2022
- Survey events
- 2
Common [wild] carp
Cyprinus carpio- First record
- 15 Jul 2003
- Latest record
- 24 Jun 2019
- Survey events
- 8
Brook lamprey > ammocoete
Lampetra planeri- First record
- 24 Jun 2019
- Latest record
- 24 Jun 2019
- Survey events
- 1
Lampetra sp.
Lampetra- First record
- 6 Jul 2011
- Latest record
- 6 Jul 2011
- Survey events
- 1
Lamprey sp.
Petromyzontidae- First record
- 1 Jul 2005
- Latest record
- 18 Jul 2007
- Survey events
- 3
Rainbow trout
Oncorhynchus mykiss- First record
- 14 Jul 2004
- Latest record
- 14 Jul 2004
- Survey events
- 1
Rudd
Scardinius erythrophthalmus- First record
- 14 Jul 2004
- Latest record
- 14 Jul 2004
- 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