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Surface Water Chemistry & Quality

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

Protocol file

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Site types that use this protocol

The freshwater physical and chemical variables measured in this protocol were selected by ECN because they are expected to indicate the possible causes and consequences of environmental change in the aquatic environment.

Dip samples are analysed for a number of determinands, including major ions and heavy metals, at a recommended frequency of weekly for rivers, fortnightly for lakes.  Continuous pH, temperature, conductivity and turbidity recording is carried out at some sites.  Temperature and dissolved oxygen profiles are measured in lakes.

There are two related protocols described in the attached document:

  • FWC: manual sampling
  • FWA: automatic sampling
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Our field activities

MARCH

In March activities at our terrestrial sites pick up after the winter. We start monitoring frog pools, moths and spiders, and prepare for ground beetle recording in April. At freshwater sites the winter measurements continue.

See all this month's field measurements...

A moth light trap © CEH
[Photo © CEH]