The river at Biggleswade

The river Ivel has four headwaters of equivalent size. By settled convention its name is given frequently to the lower part of the Flit in the south-west and all of its separate south-east headwater which rises in the north of the parish of Baldock in the far north of Hertfordshire. The rest of its course and catchment area is in Bedfordshire. It flows through the parish of Stotfold, Arlesey, Henlow, Langford, Biggleswade, Sandy and Blunham. It joins the Great Ouse at Tempsford. The total length is about 25 km.