Calder at Heptonstall Turning Circle

Where and when

Last sampled

9 Oct 2024, 10:462 years ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 27 Oct 2026 and had nothing newer.

Samples banked

4 since 7 Feb 2024 Imported periods: 1 Oct 2023 – 27 Oct 2026. Samples outside them are not shown here.

Latest sample

River / running surface water Monitoring (national agency policy)

Where

National Grid 398418, 427251As published, to the nearest 1 m. Open in a map

River, by its own name

Calder

River, by the map

River CalderPlaced on the river its name gives, 12 m from the line.

Next gauge downstream

Mytholmroyd On the River Calder · 3.1 km along the river

Nearest gauge upstream

Hebden Bridge On the River Calder · 0.1 km along the river

Why it was sampled

Monitoring (national agency policy) (4 samples)

Main measurements, river water

Everything measured here

5 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.