Head of navigation

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Head of navigation" – news · newspapers · books · scholar · JSTOR (May 2023) (Learn how and when to remove this template message)

The head of navigation is the farthest point above the

Longer rivers such as the River Thames may have several heads of navigation depending on the size of the vessel. In the case of the Thames, that includes London Bridge, which historically served as the head of navigation for tall ships; Osney Bridge in Oxford, which has the lowest headroom of any bridge on the Thames that generally restricts navigation to smaller vessels such as narrowboats and cabin cruisers, and the long reach above St John's Lock, the first lock downstream of the river’s source, on the outskirts of Lechlade, where the river can become treacherously narrow and shallow for anything but small motorboats and human-powered vessels.

In the United States, the entirety of a navigable waterway up to the head of navigation is subject to federal jurisdiction.^[2] The government recognizes that the "upper limit" of navigability will "often be the same point traditionally recognized as the head of navigation" but may under some circumstances lie "yet farther upstream."^[3]

References

This article related to water transport is a stub. You can help Wikipedia by expanding it.

• v
• t
• e