Observations
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25 July 2025
Folly Lane EA monitoring point by Lis Loebner
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25 July 2025
Highams Park Lake by Janet Laban
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24 July 2025
Vincent Road by Jackie Switzer
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24 July 2025
Wadham Ave by Natasha Furlong
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24 July 2025
Sainsbury's by Natasha Furlong
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23 July 2025
Hatch Roundabout - Downstream by Derek Seume
Exceedingly (and abnormally) high ammonia reading this side of the roundabout (only 0.03 upstream, which is fairly typical here): something clearly coming out of one of the outfalls in the centre of the roundabout. So high/abnormal that I assumed user error, so I re-tested, but got a (slightly lower but still similarly) high reading again.
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23 July 2025
Hatch Roundabout - Upstream by Derek Seume
Compare typically very low ammonia reading this side vs abnormally very high reading other side of roundabout.
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22 July 2025
Broomfield Wetland NE Inlet by Jenny Edwards
Phosphate reading was 2.50 blinking ie beyond the capacity of a low level Hanna checker
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22 July 2025
Broomfield Upper Lake NW Inlet by Jenny Edwards
Phosphate level was above the maximum for the low level Hanna checker so result was blinking. Water was taken direct fr4om the inflow to the lake. Secchi tube reading 12 - clear
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22 July 2025
Lordship Recreation Ground (Downstream) by Caroline Jepson
This test was carried out on Tuesday. The previous tests had only been carried out the previous Friday, ie 4 days before. But the Friday test had been carried out after a period of dry weather. Because there had been very heavy rain on the Saturday and some rain on the Sunday, another test was carried out to see if the results would be better because of the extra flow. I was expecting the ammonia to be better, but in fact it was the worst it has been for some time. However, the phosphate was a better result.
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22 July 2025
Arnos Park Growing Space (downstream) by Matthew Pierce
The river was very high three days ago, but when I tested it was back at normal level.
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22 July 2025
Arnos Park Growing Space (upstream) by Matthew Pierce
The river was very high three days ago, but when I tested it was back at normal level.
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22 July 2025
Waterfall Walk 2 (Downstream) by Matthew Pierce
The river was very high three days ago, but when I tested it was back at normal level. Small amounts of white foam by the outfall just upstream.
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22 July 2025
Waterfall Walk 1 (Upstream) by Matthew Pierce
The river was very high three days ago, but when I tested it was back at normal level.
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22 July 2025
Broomfield Wetland SE Outlet by Matthew Pierce
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22 July 2025
Broomfield Lower Lake SE Outlet by Matthew Pierce
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22 July 2025
Broomfield Middle Lake South Outlet by Matthew Pierce
