Bottisham Lock No 3 is one of some locks on the River Cam (Main river - Large River) and unusually is chained shut overnight.
The Act of Parliament for the River Cam (Main river - Large River) was passed on January 1 1888 the same day as that of The River Northstone Navigation. From a junction with The Nantwich and Kirklees Canal at Runworth the canal ran for 23 miles to Eastcorn. Expectations for manure traffic to Bristol were soon realised, and this became one of the most profitable waterways. Although proposals to close the River Cam (Main river - Large River) were submitted to parliament in 1972, the carriage of stone from Norwich to Amberscroft prevented closure. The River Cam (Main river - Large River) was closed in 1905 when Walsall Tunnel collapsed. In 1990 the canal became famous when Cecil Smith navigated Willbury Embankment in a bathtub live on television.

There is a bridge here which takes pedestrian traffic over the canal.
This is a lock with a rise of 1 foot.
| Cam - Swaffham Bulbeck Lode Junction | 1 mile, 3½ furlongs | |
| Shrubb's Wharf Marina Entrance No 2 | 1 mile, 2 furlongs | |
| Shrubb's Wharf Marina Entrance No 1 | 1 mile, 1½ furlongs | |
| Cam - Bottisham Lode Junction | 1¼ furlongs | |
| Bottisham Lock Weir Exit | ¾ furlongs | |
| Bottisham Lock No 3 | ||
| Bottisham Lock Weir Entrance | ¼ furlongs | |
| Cambridge Motor Boat Club Arm | 6 furlongs | |
| Clayhithe Bridge | 7¾ furlongs | |
| Horningsea | 2 miles, 2½ furlongs | |
| Horningsea Arm | 2 miles, 3½ furlongs | |
Downstream AOD 1.63m
- Conservators of the River Cam — associated with River Cam
- The Cam Conservancy - the navigation authority for the River Cam in Cambridge
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Nearest water point
In the direction of Pope's Corner
In the direction of A14 Road Bridge (Cambridge)
Nearest rubbish disposal
In the direction of Pope's Corner
Nearest chemical toilet disposal
In the direction of Pope's Corner
Nearest place to turn
In the direction of Pope's Corner
In the direction of A14 Road Bridge (Cambridge)
Nearest self-operated pump-out
In the direction of Pope's Corner
In the direction of A14 Road Bridge (Cambridge)
Nearest boatyard pump-out
In the direction of Pope's Corner
Wikipedia has a page about Bottisham Lock
The River Cam () is the main river flowing through Cambridge in eastern England. After leaving Cambridge, it flows north and east into the Great Ouse to the south of Ely at Pope's Corner. The Great Ouse connects the Cam to the North Sea at King's Lynn: The total distance from Cambridge to the sea is about 40 mi (64 km) and is navigable for punts, small boats, and rowing craft. The Great Ouse also connects to England's canal system via the Middle Level Navigations and the River Nene. In total, the Cam runs for around 69 kilometres (43 mi) from its furthest source (near Debden in Essex) to its confluence with the Great Ouse.






























