{"id":"f74d0612-ac51-4ac8-a114-90d56a974941","created_at":"2025-11-11T12:05:08.688Z","updated_at":"2025-12-31T15:39:21.262Z","owner_id":"d99a62f7-e5a9-41cf-9fa8-5f9b46143b1e","location_id":"e4285b1f-17c9-4805-9094-b7934168f3ed","dataset_id":"b970b163-d0c9-458e-9df6-00e5b4c7c828","form_id":"d7ca5c29-a2eb-45fb-9396-090423277182","observed_at":"2025-11-11T08:45:00.000Z","observed_at_local":"2025-11-11T08:45:00+00:00","notes":"The EDM shows that the last discharge was yesterday 10/11/2025 from 1pm - 2:30 pm = 1hr 30mins.  Even though there was a discharge yesterday and there is obviously a lot of rotting vegetation due to leaves etc in the water way, the ammonia levels are not bad. The reason I am more interested in the ammonia levels is because at this site the water is only just coming out into the open as its been underground for a long stretch,  it's also within a woodland and the brook does not get a lot of sunlight due to shading from the trees, which effect phosphate levels.\r\nThis is what the Internet states\r\nAmmonia - high levels are toxic to aquatic life\r\nRotting vegetation significantly increases both ammonia and phosphate levels in waterways.\r\nEffect on ammonia/nitrogen - decaying organic matter, including leaves releases nitrogen into the water, initially often in the form of ammonia or ammonium.  Naturally occurring bacteria in the water then converts this ammonia to nitrites and then to nitrates- the nitrogen cycle.  The decomposition process itself also consumes large amounts of dissolved oxygen, which can lead to hypoxic ( low oxygen) conditions that harm or kill fish and other aquatic animals.\r\n\r\nEffects on phosphate - as rain flows through leaves etc, phosphorus quickly leaches out, similar to a tea bag. Phosphorus can build up in the water and accumulate in the bottom sediment, where it can persist for decades.  Excess phosphate acts as a primary nutrient for algae, leading to rapid growth and algal blooms and blocking out sunlight, decaying vegetation depletes oxygen levels causing eutrophication.  In urban areas, fallen levels can contribute up to half of the annual phosphorus load in stormwater during the autumn months alone.\r\n","checked":"qc_complete","qa_notes":null,"qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["current_weather_description","previous_weather_description","clarity","water_flow","water_level","ammonia","phosphates","air_temperature","algae","odour","pollution_sources","colour","on_the_water_s_surface"],"photos":["https://d27925nfpi4rwv.cloudfront.net/rails/active_storage/representations/proxy/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBLzZVQWc9PSIsImV4cCI6IjIwMjYtMDUtMDhUMDc6MjI6NDIuMTU2WiIsInB1ciI6ImJsb2JfaWQifX0=--23bb2845935e263d39d5bd0a55371cf767bca769/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdCem9MWm05eWJXRjBTU0lJYW5CbkJqb0dSVlE2RTNKbGMybDZaVjkwYjE5bWFXeHNXd2RwQXBBQmFRS1FBUT09IiwiZXhwIjpudWxsLCJwdXIiOiJ2YXJpYXRpb24ifX0=--137cfa046b685d2c2c17f66eaa6c647bd283e601/1000024673.jpg","https://d27925nfpi4rwv.cloudfront.net/rails/active_storage/representations/proxy/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBLytVQWc9PSIsImV4cCI6IjIwMjYtMDUtMDhUMDc6MjI6NDIuMTU4WiIsInB1ciI6ImJsb2JfaWQifX0=--44ade4326ce94ee3ba26f74114a077d0fd2462c3/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdCem9MWm05eWJXRjBTU0lJYW5CbkJqb0dSVlE2RTNKbGMybDZaVjkwYjE5bWFXeHNXd2RwQXBBQmFRS1FBUT09IiwiZXhwIjpudWxsLCJwdXIiOiJ2YXJpYXRpb24ifX0=--137cfa046b685d2c2c17f66eaa6c647bd283e601/1000024682.jpg"],"readings":[{"id":"020134a6-f3dd-423b-8d28-5583b4bf3ec9","created_at":"2025-11-11T12:10:10.590Z","updated_at":"2025-11-11T12:10:10.590Z","parameter":"current_weather_description","unit":"nil","value":"Dull, 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