Northleigh Road Bridge

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Weather observations

• Current weather

  Community scientist interpretation

  • Sunny

• Rain in previous 24 hours

  Community scientist interpretation

  None

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Qualitative readings

• Colour

  Community scientist interpretation

  Brown, Water clear but with a brown hue (see photo)

• Clarity

  Community scientist interpretation

  Clear

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Plants/wildlife

• Aquatic vegetation

  Community scientist interpretation

  Submerged (fully under the water)	Absent
  Plants floating on the surface	Absent
  Plants emerging out of the water	Absent
  Algae (crusts or thin mats)	Less than 5%
  Algae (thick mats, can be free floating)	Absent

• Vegetation on shore or riverbank

  Community scientist interpretation

  Scrub or shrubs (woody stems), Saplings, Mature trees

• Problem plant species spotted during survey (UK)

  Community scientist interpretation

  Himalayan balsam

• Wildlife spotted during survey (UK)

  Community scientist interpretation

  Chiff chaff

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Issue reporting

• Evidence of recent pollution

  Community scientist interpretation

  Livestock with direct water access	Small amount
  Other	Livestock grazing to water edge on upstream side but incised bank so access limited. Not sure of the situation further up the field.

• Outfalls, pipes and drains

  Community scientist interpretation

  No outfall observed

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Physical tests

• Estimated width at water level

  Community scientist estimate (width)

  7 m

• Estimated average water depth

  Community scientist estimate (depth)

  0.75 m

• Water level

  Community scientist interpretation

  Average

• Water flow

  Community scientist interpretation

  Steady

• Natural obstacles to fish or flow

  Community scientist interpretation

  None

• Channel bed materials

  Community scientist interpretation

  Gravel - pebble

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Chemistry tests

• Water temperature

  HM Digital COM-100 multimeter (temperature)

  18.4 °C

• Conductivity

  HM Digital COM-100 multimeter (conductivity)

  393 μS/cm

• Turbidity

  Turbidity tube (50 cm)

  < 12 NTU

• Phosphate

  Hanna checker (phosphate - low range)

  0.29 mg/L

• Nitrate

  WaterWorks Nitrate/Nitrite Test Strips (nitrate-nitrogen)

  2 mg/L

• Nitrite

  WaterWorks Nitrate/Nitrite Test Strips (nitrite-nitrogen)

  ≤ 0 mg/L

• Ammonia

  Simplex Health teststrip (ammonia-nitrogen - low range)

  ≤ 0 mg/L