河流源头酸化依然是重要的鲑鱼水产业和特别保护区(例如威尔士·怀尔河)面临的一个严重问题。
Headwater acidification is still a significant problem for important salmon fisheries, and Special Areas of Conservation such as the Welsh River Wye.
西边有塞文河和怀河，这两条河流都流入布里斯托尔海峡，像默西河和里本河一样，比较适合航行。
In the west are the Severn and Wye, which empty into the Bristol Channel and are navigable, as are the Mersey and Ribble.
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