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Freshwater

Measurements made at ECN freshwater sites

Surface Water Chemistry & Quality

The ECN protocol for surface water chemistry and quality (measurement of physical & chemical variables) (FWC/FWA)

Surface Water Chemistry & Quality - Read More…

Surface Water Discharge

The ECN protocol for surface water discharge (FWD)

Surface Water Discharge - Read More…

Epilithic Diatoms

The ECN protocol for diatoms on submerged stones (FDT)

Epilithic Diatoms - Read More…

Macro-invertebrates

The ECN protocol for freshwater macro-invertebrates (FIN)

Macro-invertebrates - Read More…

Discontinued protocols

These protocols are no longer followed by the majority of sites, but are included on the website for anyone working with historic ECN data.

Discontinued protocols - Read More…

Our field activities

DECEMBER

During the winter months we make fewer measurements but there are still regular visits to sites to check equipment and take water samples.

See all this month's field measurements...

Winter fieldwork in the Cairngorms
[Photo © CEH]