ARAnglerRadar evidence & rules

Anguilla anguilla · England

Where european eels > elvers has been recorded

Environment Agency surveys have recorded european eels > elvers at 5,583 sites across 1,544 waters, between 1976 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. Warwickshire Avon90 siteslatest 11 Apr 2023
  2. Main river sites54 siteslatest 16 Sept 2025
  3. River Wear (North East)38 siteslatest 26 Sept 2017
  4. Main Avon Sites (Wessex)35 siteslatest 8 Oct 2025
  5. Wensum (central)34 siteslatest 15 Aug 2025
  6. River Tees (North East)30 siteslatest 10 Oct 2025
  7. River Wansbeck28 siteslatest 22 Jun 2026
  8. R.Ancholme Subcatchments27 siteslatest 25 Jun 2010
  9. River Coquet (North East)26 siteslatest 17 Jun 2026
  10. River Leadon25 siteslatest 4 Aug 2022
  11. River Stour Middle (East Anglia)25 siteslatest 29 Jul 2025
  12. River Blackwater (East Anglia)24 siteslatest 12 Oct 2023
  13. River Chelmer Lower (C&B Navigation)23 siteslatest 9 Jul 2025
  14. River Derwent (Cumbria and Lancashire)23 siteslatest 7 Jul 2023
  15. River Ehen23 siteslatest 23 Sept 2024
  16. Nar22 siteslatest 1 Apr 2026
  17. Above Wansford21 siteslatest 17 Sept 2018
  18. Main River Axe (Devon and Cornwall and the Isles of Scilly)20 siteslatest 16 Oct 2025
  19. Main Tavy20 siteslatest 9 Sept 2025
  20. River Leam20 siteslatest 4 May 2023
  21. River Colne Lower (East Anglia)20 siteslatest 2 Jun 2026
  22. River Nadder20 siteslatest 19 Sept 2024
  23. Waveney (central)20 siteslatest 15 Sept 2023
  24. Bow Brook19 siteslatest 26 May 2017
  25. Main River Parrett19 siteslatest 2 Sept 2025
  26. River Arrow (West Midlands)19 siteslatest 21 May 2025
  27. South Tyne (North East)19 siteslatest 31 Aug 2017
  28. Main Yealm18 siteslatest 28 Aug 2025
  29. River Deben (Main Reaches)18 siteslatest 21 Apr 2026
  30. River Frome (West Midlands)18 siteslatest 2 Sept 2025
  31. Gwash17 siteslatest 17 Aug 2023
  32. Main Camel17 siteslatest 17 Jul 2025
  33. Main Tamar17 siteslatest 16 Aug 2024
  34. Mole - main river (Kent, South London and East Sussex)17 siteslatest 29 Jul 2025
  35. River Alne17 siteslatest 26 Jun 2025
  36. River Cocker17 siteslatest 7 Aug 2023
  37. River Don17 siteslatest 31 Jul 2025
  38. Lincolnshire Lakes16 siteslatest 23 Jan 2008
  39. Main Fowey16 siteslatest 19 Sept 2024
  40. Main Inny16 siteslatest 13 Aug 2025
  41. Relief Channel (East Anglia)16 siteslatest 9 Aug 2017
  42. River Stour Upper (East Anglia)16 siteslatest 3 Sept 2024
  43. River Wampool16 siteslatest 24 Jun 2021
  44. Tinwell to Peakirk16 siteslatest 16 Oct 2024
  45. Yare16 siteslatest 17 Aug 2023
  46. Counter Drain15 siteslatest 3 Apr 2014
  47. Great Ouse (Brampton to Earith)15 siteslatest 15 Sept 2024
  48. Great Stour - main river15 siteslatest 11 Jul 2024
  49. Long Eau Riffles15 siteslatest 25 Sept 1996
  50. River Chelmer Upper (Main Reaches)15 siteslatest 1 Oct 2025
  51. River Chelt15 siteslatest 29 Jul 2014
  52. South Forty Foot Tributary Sites15 siteslatest 21 Dec 1994
  53. US Lt Ouse15 siteslatest 7 Aug 2024
  54. Cumbrian Esk14 siteslatest 29 Sept 2025
  55. Northern Burns14 siteslatest 25 Sept 2017
  56. R.Bain14 siteslatest 11 Apr 2017
  57. R.Slea14 siteslatest 20 Sept 2024
  58. River Aln14 siteslatest 23 Jun 2026
  59. River Brett (Main Reaches)14 siteslatest 9 Apr 2026
  60. River Leven14 siteslatest 25 Sept 2024
  61. River Lyd (West Midlands)14 siteslatest 16 Sept 2025
  62. South Holland Main Drain14 siteslatest 1 Apr 2025
  63. Wandle14 siteslatest 1 Jul 2021
  64. West Glen14 siteslatest 12 Apr 2017
  65. Babingley13 siteslatest 10 Jun 2015
  66. Bure (central)13 siteslatest 17 Jun 2025
  67. Cut-Off Channel13 siteslatest 22 Jun 2023
  68. Great Eau FMU13 siteslatest 2 Jun 2022
  69. Main Allen (Devon and Cornwall and the Isles of Scilly)13 siteslatest 14 Aug 2025
  70. Main River Torridge13 siteslatest 16 Sept 2024
  71. River Ellen13 siteslatest 22 Jun 2023
  72. Ullswater tributaries13 siteslatest 17 Jul 2024
  73. Eel Survey12 siteslatest 10 May 2023
  74. Main Lyd (Devon and Cornwall and the Isles of Scilly)12 siteslatest 8 Sept 2025
  75. Peakirk downstream12 siteslatest 20 Sept 2000
  76. Piddle12 siteslatest 31 Jul 2025
  77. R.Stour special sites12 siteslatest 4 Sept 2007
  78. River Cam12 siteslatest 21 Jul 2014
  79. River Duddon12 siteslatest 24 Sept 2024
  80. River Eamont12 siteslatest 26 Jul 2022

Distribution

By ecology region

  • East Anglia1,086 sites
  • Devon and Cornwall and the Isles of Scilly822 sites
  • Cumbria and Lancashire698 sites
  • West Midlands679 sites
  • Lincolnshire and Northamptonshire652 sites
  • Wessex501 sites
  • North East305 sites
  • Kent, South London and East Sussex204 sites
  • Yorkshire200 sites
  • Thames162 sites
  • Solent and South Downs78 sites
  • Hertfordshire and North London74 sites
  • East Midlands67 sites
  • Greater Manchester Merseyside and Cheshire55 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
Open the source dataset ↗Browse rivers A–Z →