ARAnglerRadar evidence & rules

Lampetra planeri · England

Where brook lamprey > ammocoete has been recorded

Environment Agency surveys have recorded brook lamprey > ammocoete at 314 sites across 174 waters, between 1978 and 2026. These are monitoring records with dates. They do not establish what is present today, nor that you may fish for it.

Waters

Rivers with the most records

Ordered by how many surveyed sites on each water recorded it. Waters with their own page are linked.

  1. Wensum (central)17 siteslatest 29 Sept 2023
  2. River Leadon11 siteslatest 2 Aug 2017
  3. Itchen (Solent and South Downs)9 siteslatest 19 Oct 2024
  4. River Dove (West Midlands)7 siteslatest 8 Aug 2013
  5. Test7 siteslatest 12 Sept 2024
  6. River Frome (West Midlands)6 siteslatest 7 Sept 2011
  7. Wensum (upper)6 siteslatest 2 Mar 2023
  8. Bure (upper)5 siteslatest 17 Oct 2025
  9. Stiffkey5 siteslatest 22 Apr 2026
  10. Ash (Hertfordshire and North London)4 siteslatest 29 Oct 2021
  11. Main Inny4 siteslatest 21 Aug 2025
  12. River Little Avon4 siteslatest 7 Aug 2024
  13. Derwent (East Midlands)3 siteslatest 13 Sept 2018
  14. Gowy3 siteslatest 11 Apr 2005
  15. Knee Brook3 siteslatest 8 Sept 1999
  16. Lee (Hertfordshire and North London)3 siteslatest 7 Aug 2007
  17. Main Lyd (Devon and Cornwall and the Isles of Scilly)3 siteslatest 21 Sept 2021
  18. Mimram3 siteslatest 2 Sept 2025
  19. R.Bain3 siteslatest 11 Apr 2017
  20. River Etherow3 siteslatest 11 Aug 2023
  21. River Stour (West Midlands)3 siteslatest 9 Oct 1999
  22. Tinwell to Peakirk3 siteslatest 16 Oct 2024
  23. Wensum (Restoration strategy)3 siteslatest 28 Aug 2024
  24. Western Rother (Solent and South Downs)3 siteslatest 20 Jun 2024
  25. Black Brook2 siteslatest 16 Jun 2022
  26. Blackwater (Solent and South Downs)2 siteslatest 19 Sept 2024
  27. Bucklesham Mill River2 siteslatest 24 May 2022
  28. Cadnam2 siteslatest 15 Sept 2022
  29. Cone Pill2 siteslatest 25 May 2004
  30. Cuckmere2 siteslatest 16 Sept 2008
  31. Eel Survey2 siteslatest 23 Apr 2013
  32. Ell Brook2 siteslatest 18 Aug 2005
  33. Glaven (East Anglia)2 siteslatest 17 May 2023
  34. Longhope Brook (Westbury Brook)2 siteslatest 17 Aug 2005
  35. Lugg2 siteslatest 20 Sept 2017
  36. Lymn FMU2 siteslatest 6 Jul 2016
  37. Main Allen (Devon and Cornwall and the Isles of Scilly)2 siteslatest 12 Oct 2021
  38. Main Lew (Devon and Cornwall and the Isles of Scilly)2 siteslatest 21 Aug 2023
  39. Main Lynher2 siteslatest 10 Sept 2024
  40. Main River Tone2 siteslatest 27 Jul 2010
  41. Main Tamar2 siteslatest 16 Aug 2018
  42. Main Wolf2 siteslatest 2 Oct 2018
  43. Maxey Cut2 siteslatest 29 Oct 2024
  44. Nailsworth Stream2 siteslatest 16 Jun 1997
  45. Ouse Tributaries (Kent, South London and East Sussex)2 siteslatest 5 Apr 2018
  46. Ozelworth Brook2 siteslatest 4 Aug 2010
  47. Pill River2 siteslatest 24 Apr 2013
  48. Quin2 siteslatest 2 Oct 2025
  49. River Churnet2 siteslatest 23 Sept 2014
  50. River Leam2 siteslatest 8 Oct 1996
  51. River Box (Main Reaches)2 siteslatest 22 Apr 2015
  52. River Can (Main Reaches)2 siteslatest 22 Oct 2019
  53. River Dane2 siteslatest 4 Jul 2024
  54. River Glen D/S Confluence2 siteslatest 28 Oct 2025
  55. River Hull2 siteslatest 12 Oct 2005
  56. River Isbourne2 siteslatest 22 Jul 2003
  57. River Loddon2 siteslatest 15 Oct 2015
  58. River Stour Middle (East Anglia)2 siteslatest 1 Oct 2022
  59. River Tat2 siteslatest 16 Feb 2023
  60. River Ter (Headwaters)2 siteslatest 9 Mar 2005
  61. River Worth2 siteslatest 6 Aug 2009
  62. Rother - main river2 siteslatest 6 Aug 2025
  63. Spixworth Beck2 siteslatest 10 Mar 2016
  64. Stibbard watercourse2 siteslatest 30 Mar 2015
  65. Tadburn Lake2 siteslatest 18 Sept 2025
  66. Wensum (Barbel)2 siteslatest 24 Sept 2013
  67. Witham Saltersford (upper) Subcatchment2 siteslatest 2 Sept 2014
  68. ALDERS BROOK1 sitelatest 22 Aug 2013
  69. Arram Beck1 sitelatest 6 Oct 2005
  70. Bentley Brook1 sitelatest 22 Aug 2013
  71. BRADFORD1 sitelatest 27 Aug 2021
  72. Barrow Brook1 sitelatest 21 May 2024
  73. Beaulieu1 sitelatest 30 Sept 2008
  74. Beesmoor Brook1 sitelatest 12 Aug 1998
  75. Birkin Brook1 sitelatest 28 Jun 2007
  76. Blockley Brook1 sitelatest 13 Aug 2013
  77. Boveney - Romney1 sitelatest 8 Sept 2004
  78. Bull River1 sitelatest 6 Sept 2004
  79. Cheriton stream1 sitelatest 9 Aug 2007
  80. Chess1 sitelatest 5 May 2005

Distribution

By ecology region

  • East Anglia86 sites
  • West Midlands62 sites
  • Solent and South Downs37 sites
  • Devon and Cornwall and the Isles of Scilly28 sites
  • Wessex24 sites
  • Lincolnshire and Northamptonshire16 sites
  • Hertfordshire and North London14 sites
  • Yorkshire13 sites
  • Greater Manchester Merseyside and Cheshire12 sites
  • East Midlands7 sites
  • Thames6 sites
  • Kent, South London and East Sussex6 sites
  • North East2 sites
  • Cumbria and Lancashire1 sites

Regions are the Environment Agency’s own ecology areas. Survey effort is not even across them, so a higher count can reflect more monitoring rather than more fish.

Provenance

Source and licence

  • SourceEnvironment Agency Ecology & Fish Data
  • LicenceOpen Government Licence v3.0
  • Source copy retrieved23 Jul 2026
  • Not assertedCurrent presence, abundance, access, permission or fishing quality
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