St Ives is the most beautiful town on the River Great Ouse, with its historic bridges, bustling markets, and stunning riverside views.
But this famous Cambridgeshire gem is just one of many towns along the river’s 143-mile journey from Northamptonshire to The Wash.

The River Great Ouse is one of England’s longest and most significant waterways, shaping landscapes, supporting wildlife, and linking historic settlements.
Whether you’re curious about its source, the towns it flows through, or where it meets the sea, this guide will take you through everything you need to know about this fascinating river.
- Where does the River Great Ouse start and finish?
- Where is the River Great Ouse?
- What is the source of the River Great Ouse?
- How long is the River Great Ouse?
- What towns and cities does the River Great Ouse flow through?
- What sea does the River Great Ouse flow into?
- How deep is the River Great Ouse?
- Where is the mouth of the River Great Ouse?
- What fish are found in the River Great Ouse?
- Where is the River Great Ouse on a map?
- A final word about the River Great Ouse
Where does the River Great Ouse start and finish?
The River Great Ouse begins its journey in Northamptonshire, near the village of Wappenham. From there, it flows through several counties before reaching its mouth at The Wash, a large estuary on the east coast of England.
Where is the River Great Ouse?
The river runs through central and eastern England, passing through Northamptonshire, Buckinghamshire, Bedfordshire, Cambridgeshire, and Norfolk. It connects rural landscapes with historic towns and cities.
What is the source of the River Great Ouse?
The official source is a small spring near Wappenham in Northamptonshire. Initially a tiny stream, it gathers strength as it flows towards the North Sea.
How long is the River Great Ouse?
The River Great Ouse stretches approximately 143 miles (230 km), making it one of England’s longest rivers.
What towns and cities does the River Great Ouse flow through?

The river flows through several historic towns, in the following order:
- Brackley – A market town close to the river’s source.
- Buckingham – A historic town with riverside walks.
- Bedford – One of the largest towns on the river, famous for its embankment.
- St Neots – A picturesque riverside town.
- St Ives – Known for its beautiful bridges and river culture.
- Ely – Home to the stunning Ely Cathedral.
- King’s Lynn – A historic port town where the river meets the sea.
What sea does the River Great Ouse flow into?
The River Great Ouse flows into The Wash, a large estuary connected to the North Sea. The Wash also receives water from the River Nene and other tributaries.
How deep is the River Great Ouse?
The depth varies significantly along its course. Some areas are shallow, while navigable sections are deep enough for boats and barges.
Where is the mouth of the River Great Ouse?
The river reaches the sea at King’s Lynn, where it merges with The Wash. This estuary is important for wildlife, flood management, and shipping.
What fish are found in the River Great Ouse?
The river is home to various fish species, making it a popular fishing destination. You can find:
- Pike
- Perch
- Roach
- Bream
- Carp
- Zander
Where is the River Great Ouse on a map?
Looking at a map of England, you’ll see the River Great Ouse carving a path from Northamptonshire to Norfolk, passing through key towns and stunning countryside:

A final word about the River Great Ouse
The River Great Ouse is a vital part of eastern England, shaping landscapes, supporting wildlife, and offering scenic beauty. Whether you’re interested in its history, geography, or fishing potential, it remains an iconic waterway worth exploring.
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