The River Neb is one of the principal rivers on the Isle of Man

Isle of Man

The Isle of Man , otherwise known simply as Mann , is a self-governing British Crown Dependency, located in the Irish Sea between the islands of Great Britain and Ireland, within the British Isles. The head of state is Queen Elizabeth II, who holds the title of Lord of Mann. The Lord of Mann is...

. It rises in the Michael hills, flows SW through Glen Helen

Glen Helen, Isle of Man

Glen Helen is situated between the 9th Milestone and 10th Milestone road-side markers on the Snaefell Mountain Course used for the Isle of Man TT Races on the junction of the primary A3 Castletown to Ramsey road in the parish of German in the Isle of Man....

 (where it is joined by the Blaber River

Blaber River

The Blaber River is a minor river in the Isle of Man.The Blaber River rises on Beary Mountain and runs north by north west before joining the River Neb at the head of Glen Helen....

) to St John's, where it is joined by its principal tributary, the Foxdale

Foxdale

Foxdale is a village located at the heart of the Isle of Man. The village falls within the sheading and constituency of Glenfaba and is currently represented in Tynwald and the House of Keys by David Anderson MHK who was elected in 2001 and again in 2006. The village is served by Patrick Parish...

 River, and then flows NW to the Irish Sea

Irish Sea

The Irish Sea separates the islands of Ireland and Great Britain. It is connected to the Celtic Sea in the south by St George's Channel, and to the Atlantic Ocean in the north by the North Channel. Anglesey is the largest island within the Irish Sea, followed by the Isle of Man...

 at the town of Peel on the western coast. The river gets a fine run of seatrout in the autumn.

The estuary of the river was the first known site of human settlement of the island, dating back 9,000 years.