Historic monitoring evidence · Environment Agency
Riding Mill Smolt Trap
North East · 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.
Atlantic salmon
Salmo salar- First record
- 18 Apr 2004
- Latest record
- 30 May 2011
- Survey events
- 478
Brown / sea trout
Salmo trutta- First record
- 18 Apr 2004
- Latest record
- 30 May 2011
- Survey events
- 410
Dace
Leuciscus leuciscus- First record
- 24 Apr 2004
- Latest record
- 22 Jun 2008
- Survey events
- 136
European elvers
Anguilla anguilla- First record
- 22 Jun 2008
- Latest record
- 22 Jun 2008
- Survey events
- 1
European eels > elvers
Anguilla anguilla- First record
- 11 Jun 2006
- Latest record
- 19 Jun 2008
- Survey events
- 6
Minnow
Phoxinus phoxinus- First record
- 25 Apr 2004
- Latest record
- 10 Jun 2008
- Survey events
- 63
Stone loach
Barbatula barbatula- First record
- 1 May 2005
- Latest record
- 10 Jun 2008
- Survey events
- 13
Roach
Rutilus rutilus- First record
- 13 May 2004
- Latest record
- 7 Jun 2008
- Survey events
- 10
Bullhead
Cottus gobio- First record
- 16 May 2006
- Latest record
- 16 May 2008
- Survey events
- 4
River lamprey ammocoetes
Lampetra fluviatilis- First record
- 14 May 2008
- Latest record
- 14 May 2008
- Survey events
- 1
Chub
Leuciscus cephalus- First record
- 27 Apr 2004
- Latest record
- 12 May 2008
- Survey events
- 29
River lamprey > ammocoete
Lampetra fluviatilis- First record
- 19 Apr 2004
- Latest record
- 19 Mar 2008
- Survey events
- 20
Lamprey sp. > ammocoete
Petromyzontidae- First record
- 16 May 2007
- Latest record
- 16 May 2007
- Survey events
- 1
Gudgeon
Gobio gobio- First record
- 24 May 2004
- Latest record
- 7 May 2007
- Survey events
- 6
Perch
Perca fluviatilis- First record
- 13 May 2005
- Latest record
- 8 Jun 2006
- Survey events
- 2
Sea lamprey > ammocoete
Petromyzon marinus- First record
- 18 May 2005
- Latest record
- 17 May 2006
- Survey events
- 3
3-spined stickleback
Gasterosteus aculeatus- First record
- 12 May 2006
- Latest record
- 12 May 2006
- Survey events
- 1
European eel
Anguilla anguilla- First record
- 22 Jun 2005
- Latest record
- 22 Jun 2005
- Survey events
- 1
Rainbow trout
Oncorhynchus mykiss- First record
- 1 May 2005
- Latest record
- 1 May 2005
- Survey events
- 1
River lamprey
Lampetra fluviatilis- First record
- 17 May 2004
- Latest record
- 9 Jun 2004
- Survey events
- 4
Brook lamprey > ammocoete
Lampetra planeri- First record
- 27 Apr 2004
- Latest record
- 13 May 2004
- Survey events
- 4
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