Sample Information

7.5
0.75 9999 No algae Colourless

1d;2;29;32

Your dataset indicates that this waterbody has a poor ecological status.
Elevated nitrate and phosphate concentrations indicate high nutrient loading from the surrounding catchment, creating conditions of eutrophication.
High phosphate concentrations may also indicate a local pollution source (e.g. wastewater outlet, industrial emission or an agricultural runoff).
Have you identified any such activities?  It would be very helpful if you could add this information by editing your data record to include this observation.
Geo coordinates of Local Area:
Latitude min and max: 51.357502765 : 51.957502765
Longitude min and max: -0.787247039 : -0.187247039
Average measurements from citizen scientists in your area:
Sample in the same area: 1922
Average Phosphate concentration (mg/L): 0.15 ± 0.24. Your measurement: 0.75 mg/L
Average Nitrate concentration (mg/L): 12 ± 4.0. Your measurement: 7.5 mg/L
Average Turbidity (NTU): 28 ± 44. Your measurement: NTU

 

 


Compare your measurement with defined areas

River chess in Loudwater hertfordshire

kerryarock's picture

kerryarock
Monday, September 28, 2020 - 00:00
Photo of the site directly where the water was sampled.
General Information
English
Total number of participants : 
1.00
Notes: 
Chalk stream running through Loudwater housing estate. Stream at this point runs through various back gardens. Directly opposite is small Wooded area and adjacent to that an equestrian centre with fields for grazing. Upstream there is mainly agricultural use (mainly livestock grazing - sheep and some cattle), although the headwaters are in in the town of Chesham (about 7 miles away). There is also Chesham STP which discharges treated water to the river, and also untreated overflows from the STP have been very common this year. (At one point 55 days in a row). At the place of sampling there are plenty of fish and other wildlife (you can see the ducks in the photos)
Device used: 
IOS Device
Ecological
Freshwater body type: 
River
What is the land use in the immediate surroundings?: 
Other
Semi rural residential. This side of the river is housing, opposite woodland and equestrian centre.
What is the bank vegetation? (select all that apply): 
Trees/shrubs
Grass
Chemical
Nitrate: 
5-10
Phosphate: 
0.5-1
Optical
Estimate the water colour: 
Colourless
Sample for group: 
Thames WaterBlitz