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Title: Hambledon lock
Author: National Rivers Authority Thames Region
Document Type: Monograph
Annotation: EA additional title info: National Rivers Authority
Frantic activity took place at Hambledon Lock, on the River Thames downstream of Henley. Main contractor J Murphy an Sons was racing to re-open the lock for Easter holiday weekend following a rebuilding project which promises to remove a notorious bottleneck for some of the 25,000 pleasure boats that cruise on the Thames each year. National Rivers Authority works manager Nick Lyness said the project arose out of consultations with boating organisations and other interested groups. The original structure was built in the 1870's. A pound lock - the modern type with upper and lower gates - is known to have existed on the same site since 1773, and there is evidence of a single-gated flash lock at Hambledon in the 14th century. NRA has taken the opportunity this time to update the basic design of the lock, speeding the operating cycle and simplifying maintenance. The basic principles of pound locks are centuries old. Boats from the low level move into the lock when water levels inside and outside are the same and the lower gates have been opened. The gates are shut and the top sluices opened, allowing water from the higher level to flow into the lock chamber.
Publisher: National Rivers Authority
Publication Date: 1994
Publication Place: Reading
Subject Keywords: RiversLocks (water transport)DesignConstruction
Geographic Keywords: EA South EastThames
Extent: n.p. [4]
Total file downloads: 301

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