40.1441676°N 116.6579144°E / 40.1441676; 116.6579144 城北減河北京地區順義區的一條河流,為潮白河的支流。

發源於泥河橋,向東匯入潮白河。全長5公里。河道上有交通橋4座,節制閘2座,泄洪閘2座,進水閘1座。附近建有臥龍公園。

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