Walkern Greenway

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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

  Colourless

• Clarity

  Community scientist interpretation

  Clear

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Plants/wildlife

• Aquatic vegetation

  Community scientist interpretation

  Submerged (fully under the water)	5 to 33%
  Plants floating on the surface	5 to 33%
  Plants emerging out of the water	5 to 33%
  Algae (crusts or thin mats)	Not visible
  Algae (thick mats, can be free floating)	Not visible

• Vegetation on shore or riverbank

  Community scientist interpretation

  Short plants (grasses, flowers), Tall plants (grasses, flowers), Scrub or shrubs (woody stems)

• Problem plant species spotted during survey (UK)

  Community scientist interpretation

  None

• Wildlife spotted during survey (UK)

  Community scientist interpretation

  Mallard (6), pheasant (1)

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Issue reporting

• Evidence of recent pollution

  Community scientist interpretation

  None

  None

• Outfalls, pipes and drains

  Community scientist interpretation

  No outfall observed

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Physical tests

• Water level

  Community scientist interpretation

  Low

• Water flow

  Community scientist interpretation

  Slow

• Natural obstacles to fish or flow

  Community scientist interpretation

  None

• Channel bed materials

  Community scientist interpretation

  Gravel - pebble

• Estimated width at water level

  Community scientist estimate (width)

  2 m

• Estimated average water depth

  Community scientist estimate (depth)

  0.1 m

• Turbidity

  Turbidity tube (50 cm)

  < 12 NTU

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Chemistry tests

• Water temperature

  Water Rangers pen-type meter (temperature)

  22.0 °C

• Conductivity

  Water Rangers pen-type meter (conductivity)

  773 μS/cm

• Phosphate

  Hanna checker (phosphate - low range)

  0.11 mg/L

• Nitrate-nitrogen

  WaterWorks Nitrate/Nitrite Test Strips (nitrate-nitrogen)

  10 mg/L

• Nitrite-nitrogen

  WaterWorks Nitrate/Nitrite Test Strips (nitrite-nitrogen)

  ≤ 0 mg/L