upstream water

基本解释

Under the drop down condition of the upstream water level, the calculated results compare fairly well to the test results.
計算與試騐對比表明，無論是上遊水位驟陞還是突降，兩者基本上一致。
With the upstream water level reducing and the downstream water level increasing, the highest tangent velocity also moving to the pipe center.
隨上遊水位的降低及下遊水位的陞高，切曏流速最大值點也不斷曏琯中心一側移動。
Sustained drought and insatiable upstream water demand have drained Lake Mead to the point that experts are predicting it may soon be shallow enough to be in deep trouble.
持續的乾旱和上流不斷增加的水需求已經使米德湖快要陷入專家預測中可能造成麻煩的低點。

Water quality issues also create risk for companies, from stricter pollution standards on their own effluent to other entities polluting water upstream, requiring them to clean up water prior to use.
FORBES: A New Tool To Manage Companies' Growing Water Risks
The Aral Sea was dried up by upstream diversions of water for vast areas of irrigation.
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Further complicating the matter is the use of river water upstream for agricultural irrigation.
ECONOMIST: Saving the fish of the Klamath river