Runoff

{
  "id": "MLC-T-ENV-024606",
  "term": "Runoff",
  "field": "Environment",
  "definition": "1. All water flowing through streams and rivers that goes into the lakes.\n\n2. Water that flows across the surface of the land and empties into a body of water.\n\n3. That part of precipitation, snow melt, or irrigation water that runs off the land into streams or other surface water.\n\n4. That part of precipitation, snow melt, or irrigation water that runs off the land into streams or other surface water. It can carry pollutants from the air and land into receiving waters.\n\n5. The portion of rainfall, melted snow or irrigation water that flows across ground surface and eventually is returned to streams. Runoff can pick up pollutants from the air or the land and carry them to the receiving waters.\n\n6. Water that flows off land into lakes and streams.\n\n7. The amount of precipitation that runs over the ground surface and returns to streams, rivers, or other surface water bodies. It can collect pollutants from air or land and carry them to receiving waters.\n\n8. The flow of water, usually from rainfall and snow melt, which is not absorbed into the ground. It flows across the land and eventually runs to stream channels, lakes, oceans, or other depressions in the Earth's surface. The characteristics that affect the rate of runoff include rainfall duration and intensity, as well as the ground's slope, soil type, and amount and types of vegetation present. Runoff can intercept pollutants from the air and land and carry them into streams and lakes.\n\n9. That part of the precipitation, snow melt, or irrigation water that appears in uncontrolled surface streams, rivers, drains or sewers. Runoff may be classified according to speed of appearance after rainfall or melting snow as direct runoff or base runoff, and according to source as surface runoff, storm interflow, or ground-water runoff.\n\n10. The total discharge described in (3), above, during a specified period of time.\n\n11. Also defined as the depth to which a drainage area would be covered if all of the runoff for a given period of time were uniformly distributed over it.\n\n12. Rainwater, leachate, or other liquid that drains overland on any part of a land surface and runs off of the land surface.\n\n13. Surface water leaving the target site.\n\n14. Any rainwater, leachate, or other liquid that drains over land from any part of a facility. [40 CFR 258.2 (CFR 2013)]\n\n15. Flow of storm water resulting from precipitation coming into contact with petroleum refinery property.\n\n16. The portion of rainfall or snow melt that drains off the land into ditches and streams by overland flow.",
  "subject": "Water",
  "references": [
    "Nearshore Terrestrial Ecosystems Glossary",
    "Estuaries Glossary",
    "Watershed Protection Glossary",
    "Sediment Total Maximum Daily Loads (TMDLs) Glossary; Chesapeake Bay TMDL Glossary",
    "Aquatic Biodiversity Glossary",
    "Acid Rain Glossary",
    "Superfund for Students and Teachers Glossary",
    "Regional Vulnerability Assessment (ReVA) Program Glossary",
    "USGS Water Science Glossary of Terms",
    "40 CFR 503.9 (CFR 2013)",
    "40 CFR 165.3 (CFR 2013)",
    "40 CFR 260.10 (CFR 2013)",
    "40 CFR 419.11 (CFR 2017)",
    "Nonpoint Pollution Source from Agriculture Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/runoff/"
}