Shire Dyke downstream A1 Road Bridge

EA name: SHIRE DYKE DOWNSTREAM A1 ROAD BRIDGE
Environment Agency sampling point AN-SHIREDYK · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)

These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.

Where and when

Last sampled
6 Mar 2025, 11:2919 months 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 30 Sep 2026 and had nothing newer.
Samples banked
6 since 2 May 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Planned investigation (local monitoring)
Where
National Grid 482627, 348509As published, to the nearest 1 m. Open in a map
River, by its own name
Shire Dyke
River, by the map
Shire DykePlaced on the river its name gives, 2 m from the line.
Next gauge downstream
North Hykeham On the River Witham · 26 km along the river
Why it was sampled
Planned investigation (local monitoring) (6 samples)

Main measurements, river water

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

0.1 mg/l

Sampled 6 Mar 2025, 19 months ago · 5 results banked

00.050.10.150.2mg/l202420252026no sample published after Mar 20258 Jul 2024, 12:38: below 0.03 mg/l (not detected above this)2 Sep 2024, 10:54: below 0.03 mg/l (not detected above this)6 Nov 2024, 10:29: 0.17 mg/l24 Jan 2025, 10:38: 0.071 mg/l6 Mar 2025, 11:29: 0.1 mg/l
Every result (5)
SampledResult as publishedReads as
6 Mar 2025, 11:290.1 0.1 mg/l
24 Jan 2025, 10:380.071 0.071 mg/l
6 Nov 2024, 10:290.17 0.17 mg/l
2 Sep 2024, 10:54<0.03 below 0.03 mg/l (not detected above this)
8 Jul 2024, 12:38<0.03 below 0.03 mg/l (not detected above this)

Everything measured here

18 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.

Show all 18 rows
DeterminandMaterialResults First – lastLatest result
Ammoniacal Nitrogen as N 0111 River water 5 Jul 2024 – Mar 2025 0.1 mg/l 6 Mar 2025
Arsenic, Dissolved 6045 River water 6 May 2024 – Mar 2025 below 1 µg/l 6 Mar 2025
BOD : 5 Day ATU 0085 River water 5 Jul 2024 – Mar 2025 1.2 mg/l 6 Mar 2025
Cadmium, Dissolved 0106 River water 6 May 2024 – Mar 2025 below 0.1 µg/l 6 Mar 2025
Chemical Oxygen Demand :- {COD} 0092 River water 6 May 2024 – Mar 2025 12 mg/l 6 Mar 2025
Chloride 0172 River water 5 Jul 2024 – Mar 2025 110 mg/l 6 Mar 2025
Chromium, Dissolved 3409 River water 6 May 2024 – Mar 2025 below 0.5 µg/l 6 Mar 2025
Copper, Dissolved 6450 River water 6 May 2024 – Mar 2025 below 1 µg/l 6 Mar 2025
Cyanide : Free as CN 0174 River water 6 May 2024 – Mar 2025 below 0.005 mg/l 6 Mar 2025
Cyanide as CN 0175 River water 6 May 2024 – Mar 2025 below 0.005 mg/l 6 Mar 2025
GCMS Screen : Semi-Volatile Screen: Semi Quantitative 3106 River water 6 May 2024 – Mar 2025 1 unitless value 6 Mar 2025
Iron, Dissolved 6460 River water 6 May 2024 – Mar 2025 below 30 µg/l 6 Mar 2025
Lead, Dissolved 0052 River water 6 May 2024 – Mar 2025 below 2 µg/l 6 Mar 2025
Mercury, Dissolved 0103 River water 6 May 2024 – Mar 2025 below 0.01 µg/l 6 Mar 2025
Nickel, Dissolved 3410 River water 6 May 2024 – Mar 2025 1.6 µg/l 6 Mar 2025
pH : In Situ 3169 River water 6 May 2024 – Mar 2025 7.64 6 Mar 2025
Solids, Suspended at 105 C 0135 River water 6 May 2024 – Mar 2025 13 mg/l 6 Mar 2025
Zinc, Dissolved 3408 River water 6 May 2024 – Mar 2025 below 5 µg/l 6 Mar 2025

FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.

Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.

Contains OS data © Crown copyright and database rights 2026.