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Historic monitoring evidence · Environment Agency

Waples Mill

Hertfordshire and North London · 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.

7survey events
18 Mar 1993first recorded survey
14 Aug 2025latest recorded survey
11observed taxa shown

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
18 Mar 1993
Latest record
14 Aug 2025
Survey events
6

Bullhead

Cottus gobio
First record
12 Sept 2002
Latest record
14 Aug 2025
Survey events
6

Dace

Leuciscus leuciscus
First record
23 Aug 2007
Latest record
14 Aug 2025
Survey events
5

Pike

Esox lucius
First record
12 Sept 2002
Latest record
14 Aug 2025
Survey events
5

Gudgeon

Gobio gobio
First record
18 Mar 1993
Latest record
14 Aug 2025
Survey events
3

Stone loach

Barbatula barbatula
First record
12 Sept 2002
Latest record
15 Aug 2024
Survey events
4

Minnow

Phoxinus phoxinus
First record
18 Mar 1993
Latest record
15 Aug 2024
Survey events
3

Pike varieties

Esox lucius
First record
18 Mar 1993
Latest record
15 Aug 2024
Survey events
2

Chub

Leuciscus cephalus
First record
18 Mar 1993
Latest record
9 Aug 2013
Survey events
2

Rudd

Scardinius erythrophthalmus
First record
9 Aug 2013
Latest record
9 Aug 2013
Survey events
1

Perch

Perca fluviatilis
First record
9 Aug 2013
Latest record
9 Aug 2013
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 rules

Provenance

Source, licence and boundary

Open the official dataset