The Great Ouse is a river that flows through the county of Cambridgeshire in England. It is the fourth-longest river in the United Kingdom, stretching for 143 miles from its source in Northamptonshire to its mouth in The Wash. The river is an important part of the landscape of Cambridgeshire, providing a habitat for a wide range of wildlife and supporting a variety of economic activities.
One of the most notable features of the Great Ouse in Cambridgeshire is its many locks and weirs. These structures were built to control the flow of the river and allow boats to navigate its waters. Some of the most famous locks on the Great Ouse include the Denver Sluice, which was built in the 17th century, and the St. Ives Lock, which is the largest on the river. The weirs on the river also play an important role in managing the water levels, particularly during periods of heavy rainfall.
The Great Ouse is also home to a number of important towns and cities in Cambridgeshire, including Huntingdon, St. Neots, and Ely. These settlements have grown up around the river over the centuries, and many of them still rely on the waterway for trade and transport. The river is also a popular destination for tourists, who come to enjoy the scenic beauty of the Cambridgeshire countryside and explore the historic towns and villages along its banks.