{
  "Affected by fire": "Drainage basin for sample was affected by fire prior to sampling",
  "Algal bloom": "Sample potentially affected by the excessive presence of algae",
  "Backwater": "",
  "Dambreak": "",
  "Drought": "",
  "Earthquake": "a sudden and violent shaking of the ground, as a result of movements within the earth's crust or volcanic action",
  "Flood": "",
  "Glacial lake outbreak": "a sudden release of water (Glacial Lake Outburst) from a lake fed by glacier melt that has formed at the side, in front, within, beneath, or on the surface of a glacier.",
  "Hurricane": "",
  "Mudflow": "a fluid or hardened stream or avalanche of mud.",
  "Not Determined (historical)": "",
  "Not applicable": "",
  "Regulated flow": "",
  "Routine sample": "",
  "Snowmelt": "",
  "Spill": "",
  "Spring breakup": "",
  "Storm": "a violent atmospheric disturbance, characterized by low barometric pressure, cloud cover, precipitation, strong winds, and possibly lightning and thunder",
  "Tidal action": "",
  "Under ice cover": "",
  "Volcanic action": ""
}