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upstream

upstream

3 3.5
Located towards the source of a river, against the flow
  • adjective
  • /ˌʌpˈstriːm/
translation icon : aguas arriba
  • Two weeks later, the mayor informed the community that, because of significant rainfall in the upstream watershed
  • upstream and downstream
  • upstream source
  • upstream direction

There are they advocate for yes, we can all reduce our plastic reliance and single use plastic, but also solutions are upstream.

Examples

  • More specifically, his power is defined by his upstream location in this irrigation system.

    Academic text (1995)
  • The Upper Falls is upstream of the Lower Falls and is 109 feet high.

    Academic text (2009)
  • We are able to control the flow of water from the upstream dam.

  • The terrace walls have buttressing on both sides, but mainly on the upstream side.

    Academic text (2002)
  • These salmon are born in upstream freshwater streams or or rivers.

  • Smaller amounts of effluent began entering Lake Mendota via upstream tributaries a few decades later.

    Academic text (2007)
  • Washoes found their water source polluted by upstream sewage from communities around Lake Tahoe.

    Academic text (1995)
  • Pollutants reach the coasts from the atmosphere and from upstream watersheds via polluted rivers.

    Academic text (2000)
  • The hikers made their way upstream to find the source of the river.

  • As we paddled upstream, we noticed the serene beauty of the untamed wilderness.

Synonyms

upriver
vsupstream
19 4.1

Toward the place where a river starts and against the water flow

refers more generally to the opposite flow direction not only rivers
upcurrent
vsupstream
7.2

Being near the start of a river or stream

is the general direction opposite the flow toward the source
upline
vsupstream
7.9

Toward the source of a river, pipe, or system

means the physical opposite flow direction rather than broader system position

Antonyms

9 3.0

Located further along a river or stream in the direction it flows

How Upstream

headwater
  • Specialized
6 7.2
upstream
3 3.5
midstream
7 4.1
downstream
38 2.7

Surface Forms

upstream positive

Morphology

upstream = stream (transparent) = up + stream

Clear compound of 'up' + 'stream' giving an adjectival meaning 'toward the source'. [Postprocessing: moved 'up' from base_words to prefix]

Etymology

Upstream comes from up ('toward the source') and stream ('a river'), and as an adjective it describes the place or direction toward the river's start, against the flow.