From Longman Dictionary of Contemporary Englishdownstreamdown‧stream /ˌdaʊnˈstriːm◂/ adverb DNTTWin the direction that the water in a river or stream is flowing OPP upstream → downriver a boat drifting downstream
Examples from the Corpus
downstream• The body had drifted at least three miles downstream.• The bottom step submerged means there is good water downstream.• Release from the reservoir are controlled to keep copper levels downstream at allowable levels.• The bulges and indentations are carried downstream by the flow.• It would rejoin the River Thames some distance downstream from Eton and Windsor.• Thursday in the water about half a mile downstream from the vehicle.• The raft, predictably enough, was several hundred feet downstream in no position for any sort of rescue.• A couple of hundred yards downstream it gushes out below a ceremonial arch into the Brigach.• The great cataract was farther downstream then.From Longman Business Dictionarydownstreamdown‧stream /ˌdaʊnˈstriːm◂/ adjectiveMANUFACTURINGECONOMICS relating to an activity, product etc that depends on or happens after another activity etcWith co-operatives, farmers have more control over downstream activities such as the marketing of their crops. → compare upstream —downstream adverb 