{"id":"d505faf7-60c7-4539-b6da-a4818d092d7d","created_at":"2016-09-09T00:50:04.439Z","updated_at":"2026-01-20T21:02:49.601Z","name":"O'Brien Lake, deep water sample site\r\n","slug":"o-brien-lake-deep-water-sample-site","permalink":"https://data.waterrangers.com/locations/o-brien-lake-deep-water-sample-site","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","latitude":"44.7725","longitude":"-76.4667","country":"Canada","body_of_water":"O'Brien Lake","water_body_type":"lake","investigative":false,"tested_parameters":["total_kjeldahl_nitrogen","total_phosphorus","calcium","water_temperature","secchi_depth","oxygen","ph","conductivity","air_temperature"],"tested_equipment":["lab_unspecified","secchi_disk_20cm","unspecified_air_temperature","unspecified_calcium","unspecified_conductivity","unspecified_oxygen_mg_l","unspecified_oxygen_percent","unspecified_ph","unspecified_total_phosphorus","unspecified_water_temperature"],"reference_photo_url":null,"first_observation_at":"2001-07-11T04:00:00.000Z","last_observation_at":"2018-11-03T04:00:00.000Z"}