Watchtree Nature reserve is situated on the Solway Plain about 6 miles due west of Carlisle and 6 miles north east of the market town of Wigton. The nearest village is Great Orton about one and a half miles to the west, the hamlet of Wiggonby half a mile to the south and villages of Kirkbampton and Thurstonfield about 2 miles to the north. It is situated mainly in the Allerdale District Council with a small area in Carlisle District. It lies mostly within the Parish of Aikton, with smaller areas in Great Orton and Kirkbampton Parishes