from The Century Dictionary.

  • To ascend; stream up. Southey, Thalaba, ii.
  • noun A flowing up; rise: as, an upflow of air.

from the GNU version of the Collaborative International Dictionary of English.

  • intransitive verb To flow or stream up.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb intransitive, obsolete : To flow or stream upwards. - Robert Southey


from Wiktionary, Creative Commons Attribution/Share-Alike License

up- +‎ flow


  • Depending on the raw water quality, the illustrated structure could be used to host alternative treatment systems such as upflow roughing filters installed in the outer ring and two slow sand filters placed in the centre tank.

    8. Classification of roughing filters

  • It was, therefore, decided to construct a treatment scheme applying natural purification processes such as upflow roughing filters in layers and slow sand filters.

    8. Classification of roughing filters

  • You can propel enemies by catching them in the 'upflow' and even crush them against ceilings.


  • You also have some stronger upflow (ph) of the winds.

    CNN Transcript Aug 8, 2009

  • Agriculture contributes less than 2 per cent to GDP in GCC countries, but it overexploits groundwater resources, most of which are non-renewable, resulting in their depletion and quality deterioration due to seawater intrusion and the upflow of saltwater.

    Global Environment Outlook (GEO-4)~ Chapter 6

  • * The white, wet upflow regions tend to be in the warm western parts of the oceans, like the Warm Pool, while the dark, dry downflow regions tend to be in the cooler eastern parts of the oceans.

    Bill Gray Presentation « Climate Audit

  • There is, therefore, a constant eastward breeze in the air of the outer galleries, and an upflow during the lunar day up the shafts, complicated, of course, very greatly by the varying shape of the galleries, and the ingenious contrivances of the Selenite mind.

    First Men in the Moon

  • The upflow regions are the areas with white specks heavy thunderstorms.

    Road Map #3 « Climate Audit

  • Henry could see on the horizon huge cumulus clouds rearing over zones of rising air, thunderheads that were sustained by the constant upflow of warm water and air.

    A Furnace Afloat

  • When raw water quality is low, adding upflow roughing filters is recommended.

    Chapter 5


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