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Historic monitoring evidence · Environment Agency

Mayfly

Solent and South Downs · 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.

19survey events
4 Oct 2004first recorded survey
9 Sept 2025latest recorded survey
10observed 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.

Brown / sea trout

Salmo trutta
First record
4 Oct 2004
Latest record
9 Sept 2025
Survey events
11

Bullhead

Cottus gobio
First record
26 Aug 2010
Latest record
9 Sept 2025
Survey events
10

Minnow

Phoxinus phoxinus
First record
26 Aug 2010
Latest record
9 Sept 2025
Survey events
10

Brook lamprey ammocoetes

Lampetra planeri
First record
6 Sept 2018
Latest record
9 Sept 2025
Survey events
9

Stone loach

Barbatula barbatula
First record
21 Sept 2016
Latest record
9 Sept 2025
Survey events
8

Atlantic salmon

Salmo salar
First record
21 Sept 2016
Latest record
9 Sept 2025
Survey events
7

European eel

Anguilla anguilla
First record
4 Oct 2004
Latest record
9 Sept 2025
Survey events
6

Grayling

Thymallus thymallus
First record
4 Oct 2004
Latest record
6 Sept 2018
Survey events
2

European eels > elvers

Anguilla anguilla
First record
26 Aug 2010
Latest record
26 Aug 2010
Survey events
1

Perch

Perca fluviatilis
First record
4 Oct 2004
Latest record
4 Oct 2004
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