Course
The River Nene is the tenth longest river in the United Kingdom. From its source at Arbury Hill to Northampton the river falls a total of 300 feet (91 m) in 17 miles (27 km). For the remainder of its course, the Nene falls less than 200 feet (61 m). It has a catchment area of 631 square miles (1,630 km2) and a mean flow of 328 cubic feet (9.3 m3) per second. The final 88 miles (142 km) from Northampton to the Wash is navigable.
The river's most westerly source can be found near the village of Badby near Daventry. On the eastern slope of Arbury Hill and in pools between Arbury Hill and Sharmans Hill there are three tributaries that converge at Dodford mill to form the upper reaches of the Daventry Nene. The two northern streams flow through the villages of Badby and Newnham to the convergence, whilst the southerly stream runs through Fawsley Park and through the village of Everdon before the convergence. From Dodford the river passes through the village of Weedon where it flows under the main west coast railway line and also under the Grand Union Canal. A little west of Weedon the river converges with its tributary source from Yelvertoft from the north. This tributary, the Yelvertoft Nene, is formed from a great many streams. The river now flows towards Northampton, passing through Flore and Nether Heyford, where it is joined by small streams on either bank. A little past Bugbrooke Mill the Nene passes under the M1 motorway and falls over a weir towards Kislingbury.
Another tributary merges from the south at Kislingbury. The Nene's course is closely followed by the Grand Union Canal’s Northampton arm at Upton Mill.
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