Arbury Hill is the county top of Northamptonshire. The hill is part of a three-way watershed.  Northamptonshire has the remarkable distinction that no river nor stream however small enters the county from elsewhere, though it is the source of several rivers issuing from the county.  On the slopes of Arbury Hill are the sources of the River Nene, the River Leam and the River Cherwell.

The hill is privately owned and not generally accessible.

• County: Northamptonshire
• Hill: Arbury Hill
• Height (ft): 738
• Height (m): 225
• Grid Reference: SP5401558770
• Dates Slept On: 3/4 March 2012