Historic monitoring evidence · Environment Agency
Isleham Lock
East Anglia · 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.
Separate-signal passport
What this record proves — and what it does not.
No blended quality score. Identity, monitoring, freshness, access and rules stay as separate signals so one strong fact cannot hide a missing one.
Stable monitoring site
- AnglerRadar ID
- ea-fish-site:4488
- EA waterbody ID
- GB105033042900
- Waterbody
- DS Lark
- Catchment
- Lower Ouse
Dated survey record
- Scope
- freshwater
- Survey events
- 13
- Positive taxa shown
- 23
- Recorded methods
- SEINE NETTING · WRAP AROUND SEINE NETTING
Latest survey about 2 years ago
Coverage runs from 12 Nov 1990 to 10 Sept 2024. This is historic monitoring, never a live presence or catch forecast.
Access remains unresolved
The survey carries no fishing-rights boundary, permission, opening status or safety notice. Check the owner, rod licence, current byelaws and conditions separately.
Location protection: AnglerRadar does not print the survey coordinate on this page, and nearby API results use coarsened survey areas rather than exact species-linked points.
Observed taxa
What monitoring recorded here
Taxa are ordered by latest survey date. Counts and records reflect monitoring events, not an angling forecast.
Roach
Rutilus rutilus- First record
- 12 Nov 1990
- Latest record
- 10 Sept 2024
- Survey events
- 13
Common bream
Abramis brama- First record
- 12 Nov 1990
- Latest record
- 10 Sept 2024
- Survey events
- 12
Gudgeon
Gobio gobio- First record
- 12 Nov 1990
- Latest record
- 10 Sept 2024
- Survey events
- 12
Pike
Esox lucius- First record
- 12 Nov 1990
- Latest record
- 10 Sept 2024
- Survey events
- 12
Dace
Leuciscus leuciscus- First record
- 15 Jul 1993
- Latest record
- 10 Sept 2024
- Survey events
- 11
Rudd
Scardinius erythrophthalmus- First record
- 14 Oct 2003
- Latest record
- 10 Sept 2024
- Survey events
- 9
Bullhead
Cottus gobio- First record
- 14 Oct 2003
- Latest record
- 10 Sept 2024
- Survey events
- 4
Perch
Perca fluviatilis- First record
- 12 Nov 1990
- Latest record
- 14 Sept 2015
- Survey events
- 12
Ruffe
Gymnocephalus cernuus- First record
- 12 Nov 1990
- Latest record
- 14 Sept 2015
- Survey events
- 11
Bitterling
Rhodeus sericeus- First record
- 15 Jul 1993
- Latest record
- 14 Sept 2015
- Survey events
- 9
Roach x common bream hybrid
Rutilus rutilus x Abramis brama- First record
- 12 Nov 1990
- Latest record
- 14 Sept 2015
- Survey events
- 7
Spined loach
Cobitis taenia- First record
- 14 Sept 2012
- Latest record
- 14 Sept 2015
- Survey events
- 2
Chub
Leuciscus cephalus- First record
- 15 Jul 1993
- Latest record
- 14 Sept 2012
- Survey events
- 8
Silver bream
Abramis bjoerkna- First record
- 12 Nov 1990
- Latest record
- 14 Sept 2012
- Survey events
- 8
Brook lamprey
Lampetra planeri- First record
- 14 Sept 2012
- Latest record
- 14 Sept 2012
- Survey events
- 1
Zander
Sander lucioperca- First record
- 17 Sept 2010
- Latest record
- 17 Sept 2010
- Survey events
- 1
Tench
Tinca tinca- First record
- 12 Nov 1990
- Latest record
- 6 Sept 2007
- Survey events
- 6
Bleak
Alburnus alburnus- First record
- 14 Oct 2003
- Latest record
- 6 Sept 2007
- Survey events
- 5
European eel
Anguilla anguilla- First record
- 16 Sept 2005
- Latest record
- 6 Sept 2007
- Survey events
- 2
Common [wild] carp
Cyprinus carpio- First record
- 14 Oct 2003
- Latest record
- 14 Oct 2003
- Survey events
- 1
3-spined stickleback
Gasterosteus aculeatus- First record
- 14 Oct 2003
- Latest record
- 14 Oct 2003
- Survey events
- 1
European eels > elvers
Anguilla anguilla- First record
- 20 Jun 2000
- Latest record
- 20 Jun 2000
- Survey events
- 1
Crucian carp
Carassius carassius- First record
- 12 Nov 1990
- Latest record
- 12 Nov 1990
- 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
More evidence nearby
Other surveyed waters in East Anglia.
1,913 survey sites in this ecology region carry recorded taxa. Each keeps its own dates and source.
Browse East Anglia survey sites →