Observation

Wychdell

Stevenage Brook

River or stream

July 29, 2026 at 8:30 PM

QA status: Reviewed: quality check complete

Weather observations

  • Current weather

    Community scientist interpretation

    • Sunny
  • Rain in previous 24 hours

    Community scientist interpretation

    None


Qualitative readings

  • Colour

    Community scientist interpretation

    Yellow

  • Clarity

    Community scientist interpretation

    Clear


Plants/wildlife

  • Aquatic vegetation

    Community scientist interpretation

    Submerged (fully under the water) Absent
    Plants emerging out of the water Absent
    Algae (crusts or thin mats) 5 to 33%
    Algae (thick mats, can be free floating) Less than 5%
  • Vegetation on shore or riverbank

    Community scientist interpretation

    Short plants (grasses, flowers), Mature trees

  • Problem plant species spotted during survey (UK)

    Community scientist interpretation

    Himalayan balsam

  • Wildlife spotted during survey (UK)

    Community scientist interpretation

    None


Issue reporting

  • Evidence of recent pollution

    Community scientist interpretation

    Litter Small amount
  • Outfalls, pipes and drains

    Community scientist interpretation

    No outfall observed


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, Silt / clay

  • Estimated width at water level

    Community scientist estimate (width)

    1 m

  • Estimated average water depth

    Community scientist estimate (depth)

    0.05 m

  • Turbidity

    Turbidity tube (50 cm)

    < 12 NTU


Chemistry tests

  • Water temperature

    Water Rangers pen-type meter (temperature)

    22.1 °C

  • Conductivity

    Water Rangers pen-type meter (conductivity)

    813 μS/cm

  • Phosphate

    Hanna checker (phosphate - low range)

    0.94 mg/L

  • Nitrate-nitrogen

    WaterWorks Nitrate/Nitrite Test Strips (nitrate-nitrogen)

    0.5 mg/L

  • Nitrite-nitrogen

    WaterWorks Nitrate/Nitrite Test Strips (nitrite-nitrogen)

    0.2 mg/L


Notes

Photo 1 upstream Photo 2 downstream Haven’t got NH3 test kit yet