Yeading Brook

Huge amounts of filementous algae and aquatic plant vegetation ment there was very little area to kick sample. inverterbrates observed to be caught in algae, lots of dead inverterbrates also found in sample.
Species observed with Riverfly monitoring:
Gammarus = 50,
waterhoglice = 200,
nonbiting midge larvae =7,
peamuscles = 5
leech = 7

Hard rained heavy a few days before, water fast and slightly cloudy
Riverfly monitoring:
Gammarus =290.
Other species observed:
stickleback =40mm,
Hoglice 320,
red midge larvae 4,
leech 25
Pea muscles 10,
Horse leech 2

dead invertebrates in Riverfly sample
River medium flow, no smell
The large quantity of fimamentous algae makes doing the kicksampling difficult

Sweage fungus observed coating stones and on the tips of aquatic vegetation.
Black algae (non furry) also observed
This is the worst I have seen it for a long time.
some oil also observed floating on surface

110 gammarus caught, dead invertebrate in sample

70 gammarus shrimp and 1 cased caddis caught Rivefly monitoring

some sewage fungus observed on the tips of aquatic vegetation,
Some dead invertebrates observed
Large amounts of thick sewage fungus observed at the Northumberland road bridge, 70m in lenglth

Areas of site very silty,
Some dead invertebrates
Heavy rain the previous day.
2.50ppm is maximum reading possible for phosphate hannah checker?

Normal flow
Some dead invertebrates observed
500 gammarus caught

Dead invertebrates and pale invertebrates, observed
Very heavy rain a few days previously, washed a lot of silt (1 ft deep) away
some Vegetation also swept away
880 gammarus caught
1 stickleback fish caught
pea muscles x3
leech x8
water hoglice x 60
flatworm

River flow seems low, which seems strange as it has not been dry weather.
The species of grass growing out of the sandbags has been identified as Rye grass, which may not be ideal for encouraging biodiversity and has limited use for wildlife.
There is a large amount of filamentious algae growing on stones and surfaces, more than has ever been previously observed in 3+ years. This could indicate high nitrate or phosphate levels.
Unfortunately we were unable to conduct ammonia and phosphate tests today.
Some dead invertabrates observed.
The Brook smelled bad!
265 Gammarus
1 olive baetidae
Other species observed:
-2Chronimid midge (red midge larve)
-5 midge larve
-1 blackfly larvae
-180 water hoglice (huge increase, 16 counted last month)
-1 large horse leech
-1 Glossiphonia leech
-15 small leech
- 1 pea muscle
- Stone loach eggs( probably, this species of fish last observed here in May last year)
- Flatworm
- 4 Aquatic worms
- 1 mealworm (relocated to dry land wood area)
- egg purse/plant root 1.5cm