Yoke Sike at Crawlaw Rigg
EA name: YOKE SIKE AT CRAWLAW RIGG (also listed as “RSN1512 YOKE SIKE AT CRAWLAW RIGG”)
Environment Agency sampling point NE-RSN1512 · 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
- 10 Jun 2026, 12:104 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 3 since 20 Feb 2026 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 392153, 515606As published, to the nearest 1 m. Open in a map
- River, by its own name
- Yoke Sike
- River, by the map
- Yoke SikePlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Barnard Castle On the River Tees · 19 km along the river
- Why it was sampled
- Monitoring (national agency policy) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.7%
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 92.7 | 92.7% |
| 17 Apr 2026, 13:45 | 97.8 | 97.8% |
| 20 Feb 2026, 12:49 | 99.9 | 99.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.4 mg/l
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 10.4 | 10.4 mg/l |
| 17 Apr 2026, 13:45 | 11.6 | 11.6 mg/l |
| 20 Feb 2026, 12:49 | 13.1 | 13.1 mg/l |
Water temperature
code 0076 · °C
10.1 °C
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 10.1 | 10.1 °C |
| 17 Apr 2026, 13:45 | 7.9 | 7.9 °C |
| 20 Feb 2026, 12:49 | 3.9 | 3.9 °C |
pH
code 0061
4.65
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 4.65 | 4.65 |
| 17 Apr 2026, 13:45 | 5.03 | 5.03 |
| 20 Feb 2026, 12:49 | 5.94 | 5.94 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.002 mg/l (not detected above this)
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Apr 2026, 13:45 | 0.0053 | 0.0053 mg/l |
| 20 Feb 2026, 12:49 | 0.0084 | 0.0084 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.014 mg/l
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 0.014 | 0.014 mg/l |
| 17 Apr 2026, 13:45 | 0.015 | 0.015 mg/l |
| 20 Feb 2026, 12:49 | 0.064 | 0.064 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0061 mg/l
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 0.0061 | 0.0061 mg/l |
| 17 Apr 2026, 13:45 | 0.0039 | 0.0039 mg/l |
| 20 Feb 2026, 12:49 | 0.0056 | 0.0056 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
46 µS/cm
Sampled 10 Jun 2026, 4 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jun 2026, 12:10 | 46 | 46 µS/cm |
| 17 Apr 2026, 13:45 | 42 | 42 µS/cm |
| 20 Feb 2026, 12:49 | 30 | 30 µS/cm |
Everything measured here
86 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 86 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 3 | Feb 2026 – Jun 2026 | 92.7% 10 Jun 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 3 | Feb 2026 – Jun 2026 | 10.4 mg/l 10 Jun 2026 |
| Temperature of Water 0076 | River water | 3 | Feb 2026 – Jun 2026 | 10.1 °C 10 Jun 2026 |
| pH 0061 | River water | 3 | Feb 2026 – Jun 2026 | 4.65 10 Jun 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 3 | Feb 2026 – Jun 2026 | below 0.002 mg/l 10 Jun 2026 |
| Nitrate as N 0117 | River water | 3 | Feb 2026 – Jun 2026 | 0.014 mg/l 10 Jun 2026 |
| Orthophosphate, reactive as P 0180 | River water | 3 | Feb 2026 – Jun 2026 | 0.0061 mg/l 10 Jun 2026 |
| Conductivity at 25 C 0077 | River water | 3 | Feb 2026 – Jun 2026 | 46 µS/cm 10 Jun 2026 |
| Aldicarb 9344 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Aldicarb sulfoxide 8806 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Alkalinity to pH 4.5 : Grans Plot 7610 | River water | 3 | Feb 2026 – Jun 2026 | -0.23 mg/l 10 Jun 2026 |
| Aluminium, Dissolved 6037 | River water | 1 | Feb 2026 – Feb 2026 | 73 µg/l 20 Feb 2026 |
| Aminomethylphosphonic acid 7125 | River water | 1 | Feb 2026 – Feb 2026 | below 0.1 µg/l 20 Feb 2026 |
| Ammonia un-ionised as N 0119 | River water | 3 | Feb 2026 – Jun 2026 | below 0.00001 mg/l 10 Jun 2026 |
| Asulam 3004 | River water | 1 | Feb 2026 – Feb 2026 | below 0.02 µg/l 20 Feb 2026 |
| Azoxystrobin 5050 | River water | 1 | Feb 2026 – Feb 2026 | below 0.02 µg/l 20 Feb 2026 |
| Barium, Dissolved 9446 | River water | 1 | Feb 2026 – Feb 2026 | 26 µg/l 20 Feb 2026 |
| Benzo(a)Pyrene 6399 | River water | 1 | Feb 2026 – Feb 2026 | 0.00012 µg/l 20 Feb 2026 |
| Benzo(b)Fluoranthene 0731 | River water | 1 | Feb 2026 – Feb 2026 | 0.00053 µg/l 20 Feb 2026 |
| Benzo(g,h,i)Perylene 0714 | River water | 1 | Feb 2026 – Feb 2026 | 0.0004 µg/l 20 Feb 2026 |
| Benzo(k)Fluoranthene 0733 | River water | 1 | Feb 2026 – Feb 2026 | 0.00015 µg/l 20 Feb 2026 |
| Boron, Dissolved 9447 | River water | 1 | Feb 2026 – Feb 2026 | below 100 µg/l 20 Feb 2026 |
| Cadmium, Dissolved 0106 | River water | 1 | Feb 2026 – Feb 2026 | 0.022 µg/l 20 Feb 2026 |
| Calcium, Dissolved 0239 | River water | 1 | Feb 2026 – Feb 2026 | 1.8 mg/l 20 Feb 2026 |
| Carbaryl 9343 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Carbendazim 3475 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Carbetamide 9073 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Carbofuran 3086 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 3 | Feb 2026 – Jun 2026 | 30 mg/l 10 Jun 2026 |
| Chloridazon 6760 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Chloride 0172 | River water | 3 | Feb 2026 – Jun 2026 | 8.8 mg/l 10 Jun 2026 |
| Chlorotoluron 9348 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Chloroxuron 3399 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Chromium, Dissolved 3409 | River water | 1 | Feb 2026 – Feb 2026 | below 0.5 µg/l 20 Feb 2026 |
| Copper : BLM Bioavailable 4821 | River water | 1 | Feb 2026 – Feb 2026 | 0.09 µg/l 20 Feb 2026 |
| Copper, Dissolved 6450 | River water | 1 | Feb 2026 – Feb 2026 | 2.3 µg/l 20 Feb 2026 |
| Cypermethrin 0073 | River water | 1 | Feb 2026 – Feb 2026 | below 0.00001 µg/l 20 Feb 2026 |
| Cypermethrin Identification 5446 | River water | 1 | Feb 2026 – Feb 2026 | 1 text result 20 Feb 2026 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 1 | Feb 2026 – Feb 2026 | below 0.2 µg/l 20 Feb 2026 |
| Diflurobenzuron 9345 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Diuron 3811 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Ethiofencarb 6955 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Ethirimol 5047 | River water | 1 | Feb 2026 – Feb 2026 | below 0.05 µg/l 20 Feb 2026 |
| Fenuron 9339 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Flow Type 2896 | River water | 3 | Feb 2026 – Jun 2026 | Moderate Flow 10 Jun 2026 |
| Fluoranthene 0736 | River water | 1 | Feb 2026 – Feb 2026 | 0.00051 µg/l 20 Feb 2026 |
| Glyphosate 3007 | River water | 1 | Feb 2026 – Feb 2026 | below 0.1 µg/l 20 Feb 2026 |
| Hardness, Calcium 0163 | River water | 1 | Feb 2026 – Feb 2026 | 4.49 mg/l 20 Feb 2026 |
| Hardness, Total as CaCO3 0158 | River water | 1 | Feb 2026 – Feb 2026 | 6.06 mg/l 20 Feb 2026 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 1 | Feb 2026 – Feb 2026 | 0.00039 µg/l 20 Feb 2026 |
| Iron, Dissolved 6460 | River water | 1 | Feb 2026 – Feb 2026 | 800 µg/l 20 Feb 2026 |
| Isoproturon 3117 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Lead : BLM Bioavailable 3377 | River water | 1 | Feb 2026 – Feb 2026 | 0.21 µg/l 20 Feb 2026 |
| Lead, Dissolved 0052 | River water | 1 | Feb 2026 – Feb 2026 | 3.3 µg/l 20 Feb 2026 |
| Linuron 3118 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Lithium, Dissolved 4201 | River water | 1 | Feb 2026 – Feb 2026 | below 100 µg/l 20 Feb 2026 |
| Magnesium, Dissolved 0235 | River water | 1 | Feb 2026 – Feb 2026 | 0.38 mg/l 20 Feb 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 1 | Feb 2026 – Feb 2026 | 10 µg/l 20 Feb 2026 |
| Manganese, Dissolved 6458 | River water | 1 | Feb 2026 – Feb 2026 | 10 µg/l 20 Feb 2026 |
| Methabenzthiazuron 7053 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Methiocarb 6971 | River water | 1 | Feb 2026 – Feb 2026 | below 0.001 µg/l 20 Feb 2026 |
| Methomyl 6972 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Metoxuron 3130 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Metsulfuron-methyl 9861 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Monolinuron 3925 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Monuron 3400 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Neburon 9756 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 20 Feb 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 1 | Feb 2026 – Feb 2026 | 0.04 µg/l 20 Feb 2026 |
| Nickel, Dissolved 3410 | River water | 1 | Feb 2026 – Feb 2026 | below 0.5 µg/l 20 Feb 2026 |
| Nitrite as N 0118 | River water | 3 | Feb 2026 – Jun 2026 | below 0.001 mg/l 10 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 3 | Feb 2026 – Jun 2026 | 0.015 mg/l 10 Jun 2026 |
| Oxamyl 6980 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Perfluorooctanoate anion 9274 | River water | 1 | Feb 2026 – Feb 2026 | 0.0012 µg/l 20 Feb 2026 |
| Perfluorooctylsulphonate anion 9276 | River water | 1 | Feb 2026 – Feb 2026 | 0.00043 µg/l 20 Feb 2026 |
| Phosphorus, Total as P 0348 | River water | 3 | Feb 2026 – Jun 2026 | 0.017 mg/l 10 Jun 2026 |
| Potassium, Dissolved 0209 | River water | 1 | Feb 2026 – Feb 2026 | 0.32 mg/l 20 Feb 2026 |
| Propoxur 6987 | River water | 1 | Feb 2026 – Feb 2026 | below 0.005 µg/l 20 Feb 2026 |
| Silica, reactive as SiO2 0182 | River water | 3 | Feb 2026 – Jun 2026 | 0.86 mg/l 10 Jun 2026 |
| Sodium, Dissolved 0205 | River water | 1 | Feb 2026 – Feb 2026 | 3.1 mg/l 20 Feb 2026 |
| Solids, Suspended at 105 C 0135 | River water | 3 | Feb 2026 – Jun 2026 | below 3 mg/l 10 Jun 2026 |
| Strontium, Filtered 6693 | River water | 1 | Feb 2026 – Feb 2026 | below 20 µg/l 20 Feb 2026 |
| Sulcotrione 5042 | River water | 1 | Feb 2026 – Feb 2026 | below 0.1 µg/l 20 Feb 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 1 | Feb 2026 – Feb 2026 | below 10 mg/l 20 Feb 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 1 | Feb 2026 – Feb 2026 | 1.6 µg/l 20 Feb 2026 |
| Zinc, Dissolved 3408 | River water | 1 | Feb 2026 – Feb 2026 | 7.2 µg/l 20 Feb 2026 |
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.