美国河流流域水量的 55% 来自季节性溪流，最近最高法院的裁决可能导致大片水域容易受到污染。 55% of America's river basin water flows from ephemeral streams, potentially leaving large bodies of water vulnerable to pollution due to recent Supreme Court ruling.

《科学》杂志发表的一项研究显示，此前被最高法院剥夺了联邦保护的季节性溪流占了美国河流流域流出水量的 55%。 A study published in Science reveals that ephemeral streams, which were previously stripped of federal protections by the Supreme Court, contribute 55% of water flowing out of America's river basins. 最近的裁决可能使大片水域容易受到污染，因为受监管水道中很大一部分水可能来自不受监管的季节性溪流。 The recent ruling could leave large bodies of water vulnerable to pollution, as a significant portion of water in regulated waterways may originate from unregulated ephemeral streams.