Observation

Frogmore SB

Stevenage Brook

River or stream

July 31, 2026 at 3:00 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

    Colourless

  • Clarity

    Community scientist interpretation

    Clear

Plants/wildlife

  • Aquatic vegetation

    Community scientist interpretation

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

  • Vegetation on shore or riverbank

    Community scientist interpretation

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

  • Problem plant species spotted during survey (UK)

    Community scientist interpretation

    Himalayan balsam

  • Wildlife spotted during survey (UK)

    Community scientist interpretation

    Dragonflies / damselflies

Issue reporting

  • Evidence of recent pollution

    Community scientist interpretation

    None None

  • Outfalls, pipes and drains

    Community scientist interpretation

    No outfall observed

Physical tests

  • Water level

    Community scientist interpretation

    Low

  • Water flow

    Community scientist interpretation

    Steady

  • 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)

    3 m

  • Estimated average water depth

    Community scientist estimate (depth)

    .25 m

  • Turbidity

    Turbidity tube (50 cm)

    14 NTU

Chemistry tests

  • Water temperature

    Water Rangers pen-type meter (temperature)

    18.3 °C

  • Conductivity

    Water Rangers pen-type meter (conductivity)

    65.9 μS/cm

  • Phosphate

    Hanna checker (phosphate - low range)

    .17 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 mg/L

Notes

Had no ammonia strips